id int64 5 1.93M | title stringlengths 0 128 | description stringlengths 0 25.5k | collection_id int64 0 28.1k | published_timestamp timestamp[s] | canonical_url stringlengths 14 581 | tag_list stringlengths 0 120 | body_markdown stringlengths 0 716k | user_username stringlengths 2 30 |
|---|---|---|---|---|---|---|---|---|
1,878,233 | Perform RAG in JSON formatted data | I have json data look like this, { { 'id': 'p1', 'category': 'category1', 'description':... | 0 | 2024-06-05T15:30:46 | https://dev.to/samitha10/perform-rag-in-json-formatted-data-15gf | I have json data look like this,
{ { 'id': 'p1', 'category': 'category1', 'description': 'description1' }, { 'id': 'p2', 'category': 'category2', 'description': 'description2' }, { 'id': 'p3', 'category': 'category3', 'description': 'description3' } }
I want to perform similarity search in only in description and get the relevant top 5 'id's. Free to use any embedding technique. What is the best vector store and how to do this task | samitha10 | |
1,878,232 | Affordable Custom Packaging | In today's competitive market, the importance of packaging cannot be overstated. Packaging is not... | 0 | 2024-06-05T15:30:42 | https://dev.to/rkatejo/affordable-custom-packaging-32b6 | packaging, business, productivity, discount | In today's competitive market, the importance of packaging cannot be overstated. Packaging is not just about protecting your product; it's a crucial aspect of your brand's identity and customer experience. But for many businesses, especially smaller ones, the cost of custom packaging can seem daunting. Is it possible to have both affordability and customization? Absolutely. Let's explore the world of affordable custom packaging.
## What is Custom Packaging?
Custom packaging is tailored specifically to your product and brand. Unlike standard packaging, custom solutions are designed to fit your product's dimensions and reflect your brand’s unique identity. From the size and shape to colors and logos, everything can be personalized.
## Benefits of Custom Packaging
Custom packaging offers numerous benefits:
1. Brand Recognition: Custom designs help your brand stand out and make a lasting impression.
2. 2. Product Protection: Tailored packaging ensures better protection during shipping and handling.
3. 3. Customer Experience: Unboxing a beautifully packaged product enhances customer satisfaction and loyalty.
4. The Cost Factor: Is Custom Packaging Expensive?
While custom packaging might seem costly, it doesn’t have to be. The key is understanding what influences the price and how you can control these factors.
**Breaking Down the Costs**
Several elements contribute to the cost of custom packaging:
- Materials: Different materials have different price points.
- Design Complexity: More intricate designs can cost more due to higher production complexity.
- Order Volume: Larger orders usually bring down the cost per unit.
- Factors Affecting the Price
Other factors that influence the cost include printing techniques, packaging size, and the level of customization. Understanding these can help you make more cost-effective choices.
**Affordable Custom Packaging Solutions**
Tips to Reduce Costs
Here are some strategies to keep your custom packaging affordable:
1. Simplify Designs: Less complex designs reduce production costs.
2. Choose Cost-Effective Materials: Opt for materials that provide a good balance between cost and quality.
3. Order in Bulk: Larger orders reduce the per-unit cost.
4. Partner with the Right Supplier: A good supplier can offer competitive prices and additional value.
**Materials That Save Money**
Choosing the right materials is crucial for cost-saving:
1. Cardboard: Versatile and cost-effective, cardboard is a popular choice for custom packaging.
2. Paper Bags: An eco-friendly and affordable option, perfect for lighter products.
3. Recyclable Plastics: Sustainable and often cheaper in bulk.
4. Types of Affordable Custom Packaging
**Cardboard Boxes**
Cardboard is an incredibly versatile material, allowing for various customization options while being cost-effective. It's sturdy enough to protect products and can be printed with vibrant designs.
**Paper Bags**
For smaller, lighter items, custom paper bags are a great option. They're eco-friendly and offer a canvas for creative designs.
**Eco-Friendly Options**
Sustainable packaging doesn’t have to break the bank. Materials like recycled cardboard or biodegradable plastics can be both affordable and [environmentally friendly](https://discountboxprinting.com/enviornmentaly-responsible.html).
## Why Choose Affordable Custom Packaging?
Benefits for Small Businesses
For small businesses, custom packaging can seem like a luxury. However, it can be a game-changer by providing:
Enhanced Brand Image: Custom packaging helps build a strong brand identity.
Customer Loyalty: Attractive packaging can improve the overall customer experience, leading to repeat business.
Enhancing Brand Image
Affordable custom packaging doesn’t mean compromising on quality. A well-designed package can elevate your brand, making it more memorable and appealing to customers.
## Designing Your Custom Packaging
Key Elements to Consider
When designing your [custom packaging](https://customboxprinting.com/), keep these elements in mind:
Brand Colors: Use your brand’s color palette to ensure consistency.
Logo Placement: Make sure your logo is prominently displayed.
Product Information: Include essential information in a clear, readable format.
Working with a Designer
If you're not confident in your design skills, consider hiring a professional designer. They can help create a cohesive and attractive package that aligns with your brand.
## Printing Techniques for Custom Packaging
Digital Printing
Digital printing is cost-effective for small to medium runs and offers quick turnaround times. It's ideal for detailed graphics and vibrant colors.
Offset Printing
For larger quantities, offset printing can be more economical. It provides high-quality prints and is great for intricate designs.
## Finding the Right Supplier
## What to Look for in a Supplier
Choosing the right supplier is crucial. Look for:
Experience: Suppliers with a proven track record in custom packaging.
Quality: Samples and reviews can give insights into their quality standards.
Price: Compare quotes to find the best deal.
Negotiating the Best Deal
Don't hesitate to negotiate. Many suppliers are willing to offer discounts, especially for larger orders or long-term partnerships.
DIY Custom Packaging
## When to Consider DIY
DIY packaging can be a good option if:
Budget is Tight: You can save on costs by handling the packaging in-house.
Small Orders: For limited quantities, DIY can be more practical.
Tips for Creating Your Own Packaging
Use Online Tools: Many websites offer templates and design tools for custom packaging.
Stay Simple: Stick to basic designs that are easy to execute.
Quality Materials: Invest in good materials to ensure your packaging still looks professional.
Success Stories: Businesses Using Affordable Custom Packaging
## Case Studies
Numerous businesses have found success with affordable custom packaging. For instance, a
local bakery might use custom-printed paper bags to enhance its brand appeal, or a small online retailer might use personalized cardboard boxes to create a memorable unboxing experience. These businesses have managed to keep costs low while still reaping the benefits of customized packaging.
## Lessons Learned
From these case studies, we learn that:
Creativity Pays Off: Simple yet creative designs can make a big impact.
Bulk Orders Save Money: Ordering in larger quantities significantly reduces costs.
Customer Experience Matters: Thoughtful packaging can lead to repeat business and customer loyalty.
Common Mistakes to Avoid
## Pitfalls in Custom Packaging
Many businesses fall into common traps when opting for custom packaging:
Overcomplicating Designs: Intricate designs can escalate costs and production time.
Ignoring Material Quality: Cheap materials can damage the product and tarnish the brand’s reputation.
Lack of Research: Not comparing suppliers and prices can lead to overspending.
How to Avoid Them
To steer clear of these pitfalls:
Keep It Simple: Opt for designs that are easy to produce and cost-effective.
Prioritize Quality: Balance affordability with quality to ensure your packaging is durable.
Do Your Homework: Research suppliers and compare quotes to find the best deals.
## The Future of Custom Packaging
Trends to Watch
The custom packaging industry is constantly evolving. Some trends to keep an eye on include:
Sustainable Materials: The demand for eco-friendly packaging is on the rise.
Smart Packaging: Integration of technology like QR codes and NFC tags for interactive customer experiences.
Minimalist Designs: Simple, clean designs are becoming increasingly popular.
Innovations in Packaging
Innovations such as biodegradable plastics and water-soluble packaging are revolutionizing the industry. These advancements offer eco-friendly and affordable options for businesses looking to reduce their environmental footprint.
## Environmental Impact of Custom Packaging
## Sustainable Practices
Implementing sustainable practices in packaging can make a significant impact:
Use Recycled Materials: Opt for packaging made from recycled content.
Reduce Waste: Design packaging that uses less material and is easy to recycle.
Reducing Waste
Consider packaging that is not only recyclable but also reusable. Encouraging customers to reuse packaging can further reduce waste and enhance your brand’s eco-friendly image.
## Conclusion
Affordable custom packaging is within reach for businesses of all sizes. By understanding the factors that influence costs and exploring various cost-saving strategies, you can create packaging that is both unique and budget-friendly. Remember, the key to success lies in simplicity, quality, and thorough research. Embrace the power of custom packaging to elevate your brand and delight your customers.
FAQs
What is the most affordable custom packaging material?
Cardboard is often the most affordable option due to its versatility and low cost. It's sturdy, easy to customize, and widely available.
How can I make my packaging more eco-friendly?
You can make your packaging more eco-friendly by using recycled materials, opting for biodegradable or compostable options, and designing for minimal waste. Encourage customers to recycle or reuse the packaging.
What are the benefits of custom packaging for e-commerce?
Custom packaging for e-commerce enhances brand recognition, protects products during shipping, and improves the unboxing experience, which can lead to increased customer satisfaction and loyalty.
How do I choose the right design for my packaging?
When choosing a design, consider your brand identity, target audience, and product specifications. Use your brand’s color palette and logo, and ensure the design is both attractive and functional.
Can I order custom packaging in small quantities?
Yes, many suppliers offer small quantity orders, though the cost per unit might be higher. Digital printing is a cost-effective option for smaller runs. | rkatejo |
1,878,135 | CSS Art - Warholizer | This is a submission for Frontend Challenge v24.04.17, CSS Art: June. Inspiration June is... | 0 | 2024-06-05T15:30:21 | https://dev.to/alexandrevacassin/warholizer-ee0 | frontendchallenge, devchallenge, css | _This is a submission for [Frontend Challenge v24.04.17](https://dev.to/challenges/frontend-2024-05-29), CSS Art: June._
## Inspiration
June is a very lively month, with bright colors, warmth and energy.
For the CSS Art of June contest, I created the "Warholizer", a project that takes ordinary images and transforms them to recreate the iconic, vibrant look of Marilyn Monroe in Andy Warhol's famous pop art paintings.
Using CSS filters, the Warholizer transforms any ordinary image into a brightly colored work of pop art to reflect the joyful, festive atmosphere of June.
## Demo
{% codepen https://codepen.io/alexandrevacassin/pen/rNgwOZp %}
## Journey
I set out to explore how to colorize specific parts of an image using filters. I incorporated SVG drawings directly into the HTML for various elements: background, hair, face, eyelids, and lips. I learned to blend CSS and SVG filters to create a distinctive look for an image.
To optimize the HTML code, I worked with a single image that is duplicated four times using jQuery. The basic colors are then applied according to the image sequence (1, 2, 3, 4).
I had fun creating functions that allow users to experiment with colors by varying the "hue-rotate" of each image, resulting in a unique artwork. The "Play" button changes the "hue-rotate" of the images randomly, and a "Show Original" button lets users view the original image.
This project was fun and gave me a better understanding of CSS and SVG filters.
<!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. -->
<!-- We encourage you to consider adding a license for your code. -->
<!-- Don't forget to add a cover image to your post (if you want). -->
<!-- Thanks for participating! --> | alexandrevacassin |
1,878,231 | React 19: A Comprehensive Guide to the Latest Features and Updates | Let’s dive into the exciting features of the newly released React 19, including server components and a React compiler. | 0 | 2024-06-05T15:30:08 | https://code.pieces.app/blog/react-19-comprehensive-guide | <figure><img src="https://d37oebn0w9ir6a.cloudfront.net/account_32099/react-snippets_3b6672d19a0a3e1b7bd99317eab53b88.jpg" alt="A Comprehensive Guide to React 19."/></figure>
As the most popular JavaScript framework, each React version continually rolls out improvements and new features to further improve web development. Some features in [React 18](https://code.pieces.app/blog/react-18-a-comprehensive-guide-to-the-latest-features-and-updates) included automatic batching, new server-side rendering APIs, a new strict mode, and more. The current React version, React 19, was announced at the React Conf 2024 and debuts exciting features including the open-source [React Compiler](https://react.dev/learn/react-compiler).
In this blog post, we'll dive into the exciting features of the newly released React 19.
## Exploring the Key Features of React 19
Are you excited to get acquainted with the new features and start using them? Let’s take a closer look at the major new features of the latest version of React.
### React Compiler
One of the major talking points at React Conf 2024 was the release of the open-source [React Compiler](https://react.dev/learn/react-compiler) which further optimizes your code and improves app performance. The compiler translates your React code into JavaScript and handles component rendering and state change in your UI, eliminating the need to use hooks like `usecallBack` and `useMemo`. Another interesting feature is that it automatically optimizes your components according to their requirements. You can get started with the new React compiler by following the steps below:
1. Install the Babel plugin, which the Reactjs Compiler powers::
```
npm install babel-plugin-react-compiler
```
2. After `babel-plugin-react-compiler` runs, configure your babel config file:
```
// babel.config.js
```
```
const ReactCompilerConfig = { /* ... */ };
module.exports = function () {
return {
plugins: [
['babel-plugin-react-compiler', ReactCompilerConfig],
// ...
],
};
};
```
To use the React compiler on existing projects, you should start by running the compiler on a set of directories and then proceeding to scale. Here’s a snippet to help you do that:
```
const ReactCompilerConfig = {
sources: (filename) => {
return filename.indexOf('src/path/to/dir') !== -1;
},
};
```
The compiler then works only on the React code in the specified directory.
### React Server Components
This Reactjs version also includes [React Server Components](https://docs.pieces.app/build/glossary/terms/react-server-components), so you can easily render components on the server. If you’re familiar with [Next.js](https://nextjs.org/), whose components are server components by default, this is the same idea. Server components have advantages such as faster page load time, better SEO optimization, and overall better performance.
React 19 now offers the flexibility of using server components directly in your application. Similar to how you would use a client component in Next.js by specifying `“use client”` on the first line of the component, you can also use server components in React by specifying `“use server”`. Here’s an example of how this is done:
```
"use server"
export async function getData() {
const res = await fetch('https://jsonplaceholder.typicode.com/posts');
return res.json();
}
```
[Save this code](https://jamesamoo.pieces.cloud/?p=47f3439aaf)
Since we explicitly set this to be a server component using `“use server”`, this component will run only on the server, thereby increasing the app’s performance.
### Actions
Actions in React v19 provide a new and efficient way to handle state and data mutation updates in your application. This will be a game-changer when working with forms that require state changes in response to the user’s input. By using the `useActionState` hook, you can automatically handle errors, submit actions, and manage pending states during data fetching. Here’s an example that handles the various state changes of a user updating their email on a form:
```
function ChangeEmail({ email, setEmail }) {
const [state, submitAction, isPending, error] = useActionState(
async (previousState, formData) => {
const error = await updateEmail(formData.get("email"));
if (error) {
return error;
}
redirect("/path");
return null;
},
email,
null
);
return
<form onSubmit={submitAction>
<input type="email" name="email" defaultValue={state} />
<button type="submit" disabled={isPending}>
{isPending ? "Updating..." : "Update"}
</button>
{error && <p>{error}</p>}
</form>
);
}
```
[Save this code](https://jamesamoo.pieces.cloud/?p=1d224094a9)
In the [React code snippet](https://code.pieces.app/blog/10-react-code-snippets-that-every-developer-needs) sample above, we see how the `useActionState` handles the current state, submit action, pending state, and an error without explicitly, seperately handling the actions of these various states.
### Document Metadata
React js 19 allows you to manage a document’s metadata (titles, description, meta tags), improving a web page’s SEO and accessibility. This eliminates the need for developers to resort to packages like `react-helmet` to manage a document’s metadata. Here’s an example of how you would define a document’s metadata within its component:
```
Const HomePage = () => {
return (
<>
<title>Pieces for Developers</title>
<meta name="description" content="Your Workflow Copilot" />
// Page content
</>
);
}
```
[Save this code](https://jamesamoo.pieces.cloud/?p=2f02448ce6)
### Asset Loading
Everyone loves a web application that loads quickly. Loading large images slows down the page load time and affects performance. React 19 solves this problem by loading images and other assets in the background while the user views one page, reducing the load time when the user navigates to a new page. Background asset loading increases the performance and usability of an app or site.
### Support for Stylesheet and Async Scripts
With built-in support for stylesheet, this React latest version takes applying styles to the next level. The latest version of React js supports stylesheets defined within the `<link>`, `<style>`, and `<script>` tags. It handles loading stylesheets to the DOM and the order of insertion, ensuring conflict-free execution. React 19 also handles complexities when managing stylesheets, making it easier for developers to implement performant and user-centric styles.
The current version of React also supports asynchronous loading in your apps, leading to a significant performance increase. This feature allows you to place your async script anywhere in your component tree, as React 19 will recognize it and load and execute it just once. This improves the readability of your code since you can simply place async scripts close to components that rely on them.
### The Latest Reactjs Hooks
React 19 comes with new and exciting hooks, some of which are improvements to existing hooks. Let’s jump in:
1. `use()` **hook**: The `use()` hook provides innovation mainly for asynchronous functions or managing states. The `use()` hook allows developers to pass a promise or context directly within a function without using `useEffect()` and other logic to manage states. With the `use()` hook, you can directly access the value of a particular resource within the render function.
1. `useFormStatus` **hook**: With the `useFormStatus` hook, child components can get information about a form from the parent component. This eliminates the need to pass information from the parent to child component as a prop, allowing for cleaner, more straightforward, and more concise code.
1. `useOptimistic` **hook**: The `useOptimistic` hook allows you to easily handle optimistic updates, improving user experience. This means that when showing an updated UI to the user while the data fetch process is still on, it is optimistic that the status of the data fetch returns a success rather than a failure.
1. `useActionState` **hook**: As mentioned earlier, the `useActionState` hook simplifies data mutation and allows you to automatically manage pending states during data fetching, handling errors, and submitting actions.
1. `useFormState` **hook**: This hook allows you to update the state of an application based on the outcome of a form submission. This is particularly useful in user authentication since an application’s state can change based on the user’s input.
## Migrating to React 19: Leveraging the Power of Community
All of the features discussed are currently available in the React 19 canary release, with the beta version available to the public. Migrating to new versions of a particular framework often comes with questions, and bugs— that’s where the fast-growing [Pieces discord community](https://discord.com/invite/getpieces) comes in.
Join a friendly community of awesome developers and stay ahead of updates in the tech space including framework updates, debugging, and exciting use cases of Pieces products and [Pieces API](https://github.com/pieces-app).
## Conclusion
User experience and ease of development are perhaps the most important factors in web development. This explains why the React team makes a conscious effort to ship new updates that improve both UX and DevEx for React applications. In this blog post, we talked about the features of the newly released React 19 and how it helps improve the performance of your application. Happy coding! | get_pieces | |
1,878,143 | LeetCode Day1 Array Part1 | Day 1 Array Part1 LeetCode 704 Binary Search Some ideas are learned from... | 0 | 2024-06-05T15:25:18 | https://dev.to/flame_chan_llll/leetcode-day1-array-part1-4lld | leetcode, java, algorithms | # Day 1 Array Part1
## LeetCode 704 Binary Search
Some ideas are learned from [website](https://programmercarl.com/0704.%E4%BA%8C%E5%88%86%E6%9F%A5%E6%89%BE.html#%E6%80%9D%E8%B7%AF)
Given an array of integers `nums` which is sorted in ascending order, and an integer `target`, write a function to search `target` in `nums`. If `target` exists, then return its index. Otherwise, return -1.
You must write an algorithm with `O(log n)` runtime complexity.
[Original Page](https://leetcode.com/problems/binary-search/)
About runtime complexity O(log n), it seems like we have to consider the method that is about something `half`, so the binary search was adopted.
There some keyword we should to pay attention for:
**`array `** , **`O(log n)`** , **`sorted `**
-> Binary Search
binary means that if we want to search some target, we can systematically divide into two <sup>1</sup>/ <sub>2</sub> - original-size arrays
e.g. length 6 -> one length3 + one length 2
(Here the total count decreases by 1 because we have already evaluated one of the numbers.)
```
public int search(int[] nums, int target) {
int left = 0;
int right = nums.length -1;
while(left <= right){
// We find the middle of left and right by using this way to avoid overflow
// >> Bitwise operation can improve a little performance compared with normal division operations
int mid = left +((right - left) >> 1);
// if we find the targe then return it
if(target == nums[mid]){
return mid;
}
// target larger than middle means that we have to find the right half array so we change left side
else if(target > nums[mid]){
left = mid+1;
}
else {
right = mid-1;
}
}
return -1;
}
```
Another key thing is that we should focus on
```
while(left <= right)
```
Also, we can use
```
while(left < right)
```
However, using this condition for evaluation may lead to slight differences in the subsequent content.
One of the biggest problems is that when the loop ends, at that moment `left` = `right` = `middle` and this number has not been evaluated, so we need an additional check for it.
```
if (array[left] == target) {
return left;
}
```
#### So be careful when we set the loop condition!
## LeetCode 27.Remove Element
Given an integer array nums and an integer val, remove all occurrences of val in nums in-place. The order of the elements may be changed. Then return the number of elements in nums which are not equal to val.... etc.
Consider the number of elements in nums which are not equal to val be k, to get accepted, you need to do the following things:
Change the array nums such that the first k elements of nums contain elements which are not equal to val. The remaining elements of nums are not important as well as the size of nums.
Return k.
[Original Page](https://leetcode.com/problems/remove-element/description/)
there are some keywords in this scenario:
`in-place`, `array`
The key method
we can us O(n) ways instead of O(n^2)
that means we can work by only using 1 loop
if we remove the target element in-place, the datastructure array can not remove element. According to the problem description, we simply move all instances of the target to the end of the array(the original array) and return the count of remaining elements.
And because we do not need to keep the order in this question.
We can use left and right \`vector\` to solve the problem
the left vetctor : evaluate the element
the right vector:
- recode the swaped data
- avoiding re-evaluating
```
public int removeElement(int[] nums, int val) {
int left = 0;
int right = nums.length-1;
while(left <= right){
if(nums[left] == val){
nums[left] = nums[right--];
continue;
}
left++;
}
return left;
}
```
the key thing is that the index should be smaller than the number of these elements by 1 !!!
the index 0 means there is 1 elements!
so that when the loop ends, the left will be the number of the result elements.
We can also use fast and slow `vector`
in this scenario:
the fast vector: evaluate the element
the slow vector: save the non-target element and can be seen as a \`new\`array even though we use it in-place.
```
public int removeElement(int[] nums, int val) {
int slow = 0;
for (int fast = 0; fast < nums.length; fast++) {
// Here we find the non-target value
if (nums[fast] != val) {
nums[slow] = nums[fast];
slowIndex++;
}
}
return slowIndex;
}
```
The difference between them is
- left-right-vector method focuses on moving and swapping the **target** element and move them to the end
- fast-slow-vector method focuses on moving and assigning the **non-target** element to the front!
| flame_chan_llll |
1,878,229 | Buy Verified Paxful Account | Buy Verified Paxful Account There are several compelling reasons to consider purchasing a... | 0 | 2024-06-05T15:24:51 | https://dev.to/junehafford012/buy-verified-paxful-account-5bpp | Buy Verified Paxful Account
There are several compelling reasons to consider purchasing a verified Paxful account. Firstly, a verified account offers enhanced security, providing peace of mind to all users. Additionally, it opens up a wider range of trading opportunities, allowing individuals to partake in various transactions, ultimately expanding their financial horizons.
Moreover, Buy verified Paxful account ensures faster and more streamlined transactions, minimizing any potential delays or inconveniences. Furthermore, by opting for a verified account, users gain access to a trusted and reputable platform, fostering a sense of reliability and confidence.
Lastly, Paxful’s verification process is thorough and meticulous, ensuring that only genuine individuals are granted verified status, thereby creating a safer trading environment for all users. Overall, the decision to Buy Verified Paxful account can greatly enhance one’s overall trading experience, offering increased security, access to more opportunities, and a reliable platform to engage with. Buy Verified Paxful Account.
Buy US verified paxful account from the best place dmhelpshop
Why we declared this website as the best place to buy US verified paxful account? Because, our company is established for providing the all account services in the USA (our main target) and even in the whole world. With this in mind we create paxful account and customize our accounts as professional with the real documents. Buy Verified Paxful Account.
If you want to buy US verified paxful account you should have to contact fast with us. Because our accounts are-
Email verified
Phone number verified
Selfie and KYC verified
SSN (social security no.) verified
Tax ID and passport verified
Sometimes driving license verified
MasterCard attached and verified
Used only genuine and real documents
100% access of the account
All documents provided for customer security
What is Verified Paxful Account?
In today’s expanding landscape of online transactions, ensuring security and reliability has become paramount. Given this context, Paxful has quickly risen as a prominent peer-to-peer Bitcoin marketplace, catering to individuals and businesses seeking trusted platforms for cryptocurrency trading.
In light of the prevalent digital scams and frauds, it is only natural for people to exercise caution when partaking in online transactions. As a result, the concept of a verified account has gained immense significance, serving as a critical feature for numerous online platforms. Paxful recognizes this need and provides a safe haven for users, streamlining their cryptocurrency buying and selling experience.
For individuals and businesses alike, Buy verified Paxful account emerges as an appealing choice, offering a secure and reliable environment in the ever-expanding world of digital transactions. Buy Verified Paxful Account.
Verified Paxful Accounts are essential for establishing credibility and trust among users who want to transact securely on the platform. They serve as evidence that a user is a reliable seller or buyer, verifying their legitimacy.
But what constitutes a verified account, and how can one obtain this status on Paxful? In this exploration of verified Paxful accounts, we will unravel the significance they hold, why they are crucial, and shed light on the process behind their activation, providing a comprehensive understanding of how they function. Buy verified Paxful account.
Why should to Buy Verified Paxful Account?
There are several compelling reasons to consider purchasing a verified Paxful account. Firstly, a verified account offers enhanced security, providing peace of mind to all users. Additionally, it opens up a wider range of trading opportunities, allowing individuals to partake in various transactions, ultimately expanding their financial horizons.
Moreover, a verified Paxful account ensures faster and more streamlined transactions, minimizing any potential delays or inconveniences. Furthermore, by opting for a verified account, users gain access to a trusted and reputable platform, fostering a sense of reliability and confidence. Buy Verified Paxful Account.
Lastly, Paxful’s verification process is thorough and meticulous, ensuring that only genuine individuals are granted verified status, thereby creating a safer trading environment for all users. Overall, the decision to buy a verified Paxful account can greatly enhance one’s overall trading experience, offering increased security, access to more opportunities, and a reliable platform to engage with.
What is a Paxful Account
Paxful and various other platforms consistently release updates that not only address security vulnerabilities but also enhance usability by introducing new features. Buy Verified Paxful Account.
In line with this, our old accounts have recently undergone upgrades, ensuring that if you purchase an old buy Verified Paxful account from dmhelpshop.com, you will gain access to an account with an impressive history and advanced features. This ensures a seamless and enhanced experience for all users, making it a worthwhile option for everyone.
https://dmhelpshop.com/product/buy-verified-paxful-account/
Is it safe to buy Paxful Verified Accounts?
Buying on Paxful is a secure choice for everyone. However, the level of trust amplifies when purchasing from Paxful verified accounts. These accounts belong to sellers who have undergone rigorous scrutiny by Paxful. Buy verified Paxful account, you are automatically designated as a verified account. Hence, purchasing from a Paxful verified account ensures a high level of credibility and utmost reliability. Buy Verified Paxful Account.
PAXFUL, a widely known peer-to-peer cryptocurrency trading platform, has gained significant popularity as a go-to website for purchasing Bitcoin and other cryptocurrencies. It is important to note, however, that while Paxful may not be the most secure option available, its reputation is considerably less problematic compared to many other marketplaces. Buy Verified Paxful Account.
https://dmhelpshop.com/product/buy-verified-paxful-account/
This brings us to the question: is it safe to purchase Paxful Verified Accounts? Top Paxful reviews offer mixed opinions, suggesting that caution should be exercised. Therefore, users are advised to conduct thorough research and consider all aspects before proceeding with any transactions on Paxful.
https://dmhelpshop.com/product/buy-verified-paxful-account/
How Do I Get 100% Real Verified Paxful Accoun?
Paxful, a renowned peer-to-peer cryptocurrency marketplace, offers users the opportunity to conveniently buy and sell a wide range of cryptocurrencies. Given its growing popularity, both individuals and businesses are seeking to establish verified accounts on this platform.
However, the process of creating a verified Paxful account can be intimidating, particularly considering the escalating prevalence of online scams and fraudulent practices. This verification procedure necessitates users to furnish personal information and vital documents, posing potential risks if not conducted meticulously.
In this comprehensive guide, we will delve into the necessary steps to create a legitimate and verified Paxful account. Our discussion will revolve around the verification process and provide valuable tips to safely navigate through it.
Moreover, we will emphasize the utmost importance of maintaining the security of personal information when creating a verified account. Furthermore, we will shed light on common pitfalls to steer clear of, such as using counterfeit documents or attempting to bypass the verification process.
Whether you are new to Paxful or an experienced user, this engaging paragraph aims to equip everyone with the knowledge they need to establish a secure and authentic presence on the platform.
https://dmhelpshop.com/product/buy-verified-paxful-account/
Benefits Of Verified Paxful Accounts
Verified Paxful accounts offer numerous advantages compared to regular Paxful accounts. One notable advantage is that verified accounts contribute to building trust within the community.
Verification, although a rigorous process, is essential for peer-to-peer transactions. This is why all Paxful accounts undergo verification after registration. When customers within the community possess confidence and trust, they can conveniently and securely exchange cash for Bitcoin or Ethereum instantly. Buy Verified Paxful Account.
Paxful accounts, trusted and verified by sellers globally, serve as a testament to their unwavering commitment towards their business or passion, ensuring exceptional customer service at all times. Headquartered in Africa, Paxful holds the distinction of being the world’s pioneering peer-to-peer bitcoin marketplace. Spearheaded by its founder, Ray Youssef, Paxful continues to lead the way in revolutionizing the digital exchange landscape.
Paxful has emerged as a favored platform for digital currency trading, catering to a diverse audience. One of Paxful’s key features is its direct peer-to-peer trading system, eliminating the need for intermediaries or cryptocurrency exchanges. By leveraging Paxful’s escrow system, users can trade securely and confidently.
What sets Paxful apart is its commitment to identity verification, ensuring a trustworthy environment for buyers and sellers alike. With these user-centric qualities, Paxful has successfully established itself as a leading platform for hassle-free digital currency transactions, appealing to a wide range of individuals seeking a reliable and convenient trading experience. Buy Verified Paxful Account.
https://dmhelpshop.com/product/buy-verified-paxful-account/
How paxful ensure risk-free transaction and trading?
Engage in safe online financial activities by prioritizing verified accounts to reduce the risk of fraud. Platforms like Paxfu implement stringent identity and address verification measures to protect users from scammers and ensure credibility.
With verified accounts, users can trade with confidence, knowing they are interacting with legitimate individuals or entities. By fostering trust through verified accounts, Paxful strengthens the integrity of its ecosystem, making it a secure space for financial transactions for all users. Buy Verified Paxful Account.
Experience seamless transactions by obtaining a verified Paxful account. Verification signals a user’s dedication to the platform’s guidelines, leading to the prestigious badge of trust. This trust not only expedites trades but also reduces transaction scrutiny. Additionally, verified users unlock exclusive features enhancing efficiency on Paxful. Elevate your trading experience with Verified Paxful Accounts today.
In the ever-changing realm of online trading and transactions, selecting a platform with minimal fees is paramount for optimizing returns. This choice not only enhances your financial capabilities but also facilitates more frequent trading while safeguarding gains. Buy Verified Paxful Account.
Examining the details of fee configurations reveals Paxful as a frontrunner in cost-effectiveness. Acquire a verified level-3 USA Paxful account from dmhelpshop.com for a secure transaction experience. Invest in verified Paxful accounts to take advantage of a leading platform in the online trading landscape.
https://dmhelpshop.com/product/buy-verified-paxful-account/
How Old Paxful ensures a lot of Advantages?
Explore the boundless opportunities that Verified Paxful accounts present for businesses looking to venture into the digital currency realm, as companies globally witness heightened profits and expansion. These success stories underline the myriad advantages of Paxful’s user-friendly interface, minimal fees, and robust trading tools, demonstrating its relevance across various sectors.
Businesses benefit from efficient transaction processing and cost-effective solutions, making Paxful a significant player in facilitating financial operations. Acquire a USA Paxful account effortlessly at a competitive rate from usasmmonline.com and unlock access to a world of possibilities. Buy Verified Paxful Account.
Experience elevated convenience and accessibility through Paxful, where stories of transformation abound. Whether you are an individual seeking seamless transactions or a business eager to tap into a global market, buying old Paxful accounts unveils opportunities for growth.
Paxful’s verified accounts not only offer reliability within the trading community but also serve as a testament to the platform’s ability to empower economic activities worldwide. Join the journey towards expansive possibilities and enhanced financial empowerment with Paxful today. Buy Verified Paxful Account.
https://dmhelpshop.com/product/buy-verified-paxful-account/
Why paxful keep the security measures at the top priority?
In today’s digital landscape, security stands as a paramount concern for all individuals engaging in online activities, particularly within marketplaces such as Paxful. It is essential for account holders to remain informed about the comprehensive security protocols that are in place to safeguard their information.
Safeguarding your Paxful account is imperative to guaranteeing the safety and security of your transactions. Two essential security components, Two-Factor Authentication and Routine Security Audits, serve as the pillars fortifying this shield of protection, ensuring a secure and trustworthy user experience for all. Buy Verified Paxful Account.
Conclusion
Investing in Bitcoin offers various avenues, and among those, utilizing a Paxful account has emerged as a favored option. Paxful, an esteemed online marketplace, enables users to engage in buying and selling Bitcoin. Buy Verified Paxful Account.
The initial step involves creating an account on Paxful and completing the verification process to ensure identity authentication. Subsequently, users gain access to a diverse range of offers from fellow users on the platform. Once a suitable proposal captures your interest, you can proceed to initiate a trade with the respective user, opening the doors to a seamless Bitcoin investing experience.
In conclusion, when considering the option of purchasing verified Paxful accounts, exercising caution and conducting thorough due diligence is of utmost importance. It is highly recommended to seek reputable sources and diligently research the seller’s history and reviews before making any transactions.
https://dmhelpshop.com/product/buy-verified-paxful-account/
Moreover, it is crucial to familiarize oneself with the terms and conditions outlined by Paxful regarding account verification, bearing in mind the potential consequences of violating those terms. By adhering to these guidelines, individuals can ensure a secure and reliable experience when engaging in such transactions. Buy Verified Paxful Account.
Contact Us / 24 Hours Reply
Telegram:dmhelpshop
WhatsApp: +1 (980) 277-2786
Skype:dmhelpshop
Email:dmhelpshop@gmail.com | junehafford012 | |
1,878,227 | yaml | YAML (YAML Ain't Markup Language), yapılandırma dosyaları ve veri serileştirme için kullanılan,... | 0 | 2024-06-05T15:24:12 | https://dev.to/mustafacam/yaml-356b | YAML (YAML Ain't Markup Language), yapılandırma dosyaları ve veri serileştirme için kullanılan, okunabilirliği yüksek bir veri serileştirme dilidir. YAML dosyaları, insan tarafından okunabilir ve yazılabilir basit bir sözdizimine sahiptir. Bu nedenle, yapılandırma dosyaları, veri değişim formatları ve uygulama yapılandırmaları için yaygın olarak kullanılır.
### YAML Dosyalarının Temel Özellikleri
1. **İnsana Okunabilir**:
- YAML, düz metin formatında ve kolayca anlaşılabilir bir yapıdadır. Girintileme ve boşluklara dayalıdır, bu nedenle iç içe geçmiş veri yapıları çok net bir şekilde gösterilebilir.
2. **Veri Yapılarını Destekler**:
- YAML, basit veri türlerinden karmaşık veri yapılarına kadar birçok veri türünü destekler. Liste, dize, tamsayı, sözlük ve iç içe geçmiş yapılar gibi çeşitli veri türlerini kolayca ifade edebilir.
3. **Çoklu Platform Desteği**:
- YAML, birçok programlama dili ve platform tarafından desteklenir ve işlenebilir. Bu nedenle, farklı uygulamalar ve hizmetler arasında yapılandırma ve veri değişimi için idealdir.
### YAML Dosya Sözdizimi
#### Temel Veri Türleri
- **Anahtar-Değer Çiftleri**:
```yaml
anahtar: değer
```
Örnek:
```yaml
name: John Doe
age: 30
```
- **Listeler**:
```yaml
- öğe1
- öğe2
- öğe3
```
Örnek:
```yaml
hobbies:
- reading
- traveling
- swimming
```
- **İç İçe Geçmiş Yapılar**:
```yaml
person:
name: John Doe
age: 30
address:
street: 123 Main St
city: Anytown
zipcode: 12345
```
#### Karmaşık Veri Yapıları
- **Sözlük İçinde Liste**:
```yaml
employees:
- name: John Doe
position: Developer
- name: Jane Smith
position: Designer
```
- **Liste İçinde Sözlük**:
```yaml
- name: John Doe
age: 30
- name: Jane Smith
age: 25
```
#### Özel Karakterler ve Stringler
- **Dize Kullanımı**:
```yaml
single_quoted: 'Tek tırnaklı dize'
double_quoted: "Çift tırnaklı dize"
plain: Düz dize
```
- **Çok Satırlı Stringler**:
```yaml
folded_style: >
Bu, katlanmış stil kullanılarak yazılmış
çok satırlı bir metindir.
Satır sonları boşlukla birleştirilir.
literal_style: |
Bu, tam stil kullanılarak yazılmış
çok satırlı bir metindir.
Satır sonları korunur.
```
### YAML Kullanım Alanları
1. **Yapılandırma Dosyaları**:
- Birçok yazılım ve hizmet, yapılandırma dosyaları için YAML kullanır. Örneğin, Docker, Kubernetes ve Ansible gibi araçlar yapılandırma ve yönetim işlemleri için YAML dosyalarını kullanır.
2. **Veri Değişim Formatı**:
- YAML, JSON ve XML gibi diğer veri değişim formatlarına alternatif olarak kullanılabilir. Okunabilirliği ve esnekliği sayesinde veri serileştirme ve değişiminde tercih edilir.
3. **CI/CD Boru Hatları**:
- Sürekli entegrasyon ve sürekli teslimat (CI/CD) boru hatları, yapılandırmalarını tanımlamak için YAML dosyalarını kullanır. Örneğin, GitLab CI/CD, Travis CI ve CircleCI gibi araçlar YAML dosyaları ile yapılandırılır.
### Örnek YAML Dosyası
```yaml
version: "3.8"
services:
web:
image: nginx:latest
ports:
- "80:80"
volumes:
- ./html:/usr/share/nginx/html
database:
image: postgres:latest
environment:
POSTGRES_USER: example
POSTGRES_PASSWORD: example
```
Bu örnek, Docker Compose kullanarak bir web ve veritabanı hizmetini tanımlayan basit bir YAML dosyasıdır. `version` anahtarı, Compose dosyasının sürümünü belirtir ve `services` anahtarı, başlatılacak hizmetleri tanımlar.
YAML, basitliği, okunabilirliği ve esnekliği sayesinde yapılandırma ve veri serileştirme ihtiyaçları için güçlü bir araçtır. | mustafacam | |
1,878,226 | Every compared FastAPI vs Flask? | I have come to understand that when developing web applications, selecting the right Python web... | 0 | 2024-06-05T15:21:28 | https://dev.to/zoltan_fehervari_52b16d1d/every-compared-fastapi-vs-flask-9cm | webdev, python, fastapi, flask | I have come to understand that when developing web applications, selecting the right Python web framework is crucial. [FastAPI and Flask](https://bluebirdinternational.com/fastapi-vs-flask/) are two popular options that have gained traction recently.
_I will attempt to introduce these frameworks and highlight their key features and differences._
<u>FastAPI:</u> A modern web framework for building APIs with Python 3.7+. It focuses on speed and performance, using Python type hints for fast development, automatic API documentation, and editor support. It also supports asynchronous programming, making it suitable for real-time applications.
<u>Flask:</u> A lightweight web framework that is easy to use and highly customizable. Ideal for small to medium-sized web applications and RESTful APIs, Flask follows a minimalist “micro-framework” philosophy, allowing developers to choose their own libraries and extensions.
**Performance and Scalability**
FastAPI: Known for high performance due to Pydantic models and Starlette for handling requests. It supports asynchronous programming, making it ideal for high-throughput applications.
Flask: While not as fast as FastAPI, Flask is still a performant framework. It uses Werkzeug for handling requests and Jinja2 for templating, suitable for smaller applications.
Performance Benchmarks: FastAPI outperforms Flask in terms of requests per second and maximum concurrent requests. However, performance depends on specific use cases.
Scalability: Both frameworks are scalable, but FastAPI’s asynchronous programming and Pydantic models make it better suited for high-throughput applications. Flask’s modular design supports scalability for less demanding projects.
**Routing and Request Handling**
FastAPI: Provides a powerful routing system based on Python type hints. It supports asynchronous request handling for better performance and generates automatic documentation for all routes.
Flask: Offers a simple and customizable routing system. It handles requests synchronously, which may be less optimal for high-concurrency applications.
**Database Integration**
FastAPI: Supports popular databases like SQLite, PostgreSQL, and MySQL. It integrates well with ORMs such as SQLAlchemy, Tortoise ORM, and GINO, supporting asynchronous database operations.
Flask: Does not have built-in database support but offers extensions like Flask-SQLAlchemy and Flask-MySQL. It supports ORMs like SQLAlchemy and Pony ORM, providing flexibility in choosing databases.
**Authentication and Authorization**
FastAPI: Provides built-in support for OAuth2, including password, client credentials, and JWT grant types. It supports scopes for granular authorization.
Flask: Uses extensions like Flask-Login for authentication and Flask-Security for authorization. These extensions offer a wide range of security features, including SQLAlchemy and MongoEngine integration.
**Documentation and Testing**
FastAPI: Excellent documentation with step-by-step guides, code examples, and interactive API documentation (Swagger UI). It has a built-in testing framework and supports popular testing tools like Pytest.
Flask: Well-organized documentation with a comprehensive API reference. It supports interactive API documentation through Flask-RESTful and provides a built-in testing framework compatible with Pytest and Nose.
**Community and Communication**
FastAPI: Rapidly growing community with a supportive environment. It has a smaller but active ecosystem of plugins and libraries.
Flask: Large and well-established community with an extensive ecosystem of plugins and libraries. However, not all plugins are actively maintained.
**Use Cases and Project Suitability**
FastAPI: Best for high-performance APIs, scalable projects, teams that prioritize type hints, and real-time applications.
Flask: Ideal for small to medium-sized projects, customizable and unopinionated development, simpler codebases, and integration with third-party libraries.
**Performance Benchmarks and Real-World Examples
**
FastAPI: Excels in performance benchmarks and is used in high-performance applications like the OpenAPI project.
Flask: Suitable for smaller web applications, such as the microblogging platform Flaskr. | zoltan_fehervari_52b16d1d |
1,878,141 | Debouncing in React | npm install lodash.debounce import debounce from 'lodash.debounce' Enter fullscreen mode ... | 0 | 2024-06-05T15:00:07 | https://dev.to/alamfatima1999/debouncing-in-react-34ni | ```JS
npm install lodash.debounce
import debounce from 'lodash.debounce'
```
```JS
const doCityFilter = query => {
if (!query) return setFilteredCities([])
const debouncedFilter = debounce(() => {
console.log('====>', query)
setFilteredCities(citiesArray.filter(
city => city.toLowerCase().includes(query.toLowerCase())
))
}, 500)
debouncedFilter()
}
```
| alamfatima1999 | |
1,878,154 | How safe is your prescription information online? | https://bit.ly/3yMW1Ru Ensuring the safety of your prescription information online is crucial. DiRx... | 0 | 2024-06-05T15:20:03 | https://dev.to/lily_martin_3875e40484192/how-safe-is-your-prescription-information-online-5f9j | https://bit.ly/3yMW1Ru
Ensuring the safety of your prescription information online is crucial. DiRx emphasises the importance of understanding who has access to your health data, how it is used, and the security measures to protect it. With HIPAA compliance and secure database protocols, DiRx guarantees that your private health information remains confidential and safe.
#Onlinepharmacysecurity#ProtectinghealthinformationHIPAA-compliant pharmacy#Secureprescriptioninformation#Onlineprescriptionprivacy#Health informationsecurity# Safeonlinepharmacy#ProtectPHIonline#Securehealthdata#Online pharmacyprivacy#Privacylawpharmacy##ProtectinghealthinformationHIPAA-compliant pharmacy#Secureprescriptioninformation#Onlineprescriptionprivacy#Health informationsecurity# Safeonlinepharmacy#ProtectPHIonline#Securehealthdata#Online pharmacyprivacy#Privacylawpharmacy# HIPAAverifiedpharmacy#LegitScriptcertified pharmacy#Protectingprescriptiondata#Pharmacydataencryption#Confidentialhealth information#Privacyinonlinepharmacies#Secureonlinemedication# Protectedhealth information#Onlinepharmacycompliance | lily_martin_3875e40484192 | |
1,878,149 | The Growth of Battery Additives Market | Battery, just like other things which performance can reduce with age, needs something to protect... | 0 | 2024-06-05T15:15:02 | https://dev.to/marktwain57/the-growth-of-battery-additives-market-34pl | batteryadditives, batteryadditivesmarket | Battery, just like other things which performance can reduce with age, needs something to protect them. Battery additives can help to restore and repower various battery types to improve their safety and performance. Not only for battery, but there are also plastic additives that were added to plastic during the production process to improve its performance.
As many things utilize electricity and batteries nowadays, there has been an increasing demand for [battery additives market](https://www.gmiresearch.com/report/global-battery-additives-market/). According to a research firm, GMI Research, battery additives market size would reach USD 2.9 billion in 2029. Based on the application, lead acid battery will hold the largest market share due to the application in ignition of automobiles.
This impressive growth is owing to several benefits that they offer. These compounds can mitigate common battery issues such as self-discharge and sulfation. Without sulfation, it can extend the battery life and ensure a reliable [power supply](https://dev.to/kawhyte/uninterruptible-power-supply-ups-suggestions-3g93). These additives can enhance overall battery efficiency, making them an essential aspect of energy storage solutions.
## What Drives the Market?
There are several major drivers that can boost the market’s growth.
The growing adoption of EV and HEV in automotive industry
Electric vehicles and hybrid electric vehicles are increasingly popular. These vehicles do not produce harmful emissions and are also simple to operate. These vehicles do not use fossil fuels but use batteries that are powered by electricity. The rising adoption of these electric vehicles can also drive the growth of battery additives market.
## The rising need for Li-ion batteries
There also has been the rising need for Li-ion batteries among electronic products. We can find these batteries in electric products such as cellphones, laptops, and other electronic products. As Li-ion batteries use additives, they can drive the growth of the market.
The increase investments for renewable energy
Many governments worldwide are taking proactive steps to use renewable energy to diversify energy sources. Many governments also impose regulations that promote the usage of greener energies. This support from the government can further propel the growth of the market, since battery is a crucial part of renewable energy storage systems.
## The Challenges
However, there are some challenges that this market needs to address.
## The high cost for produce battery additives
Unfortunately, there is a high cost to produce battery additives and the question whether the battery additives are worth the investment.
## Safety issues related to lead-acid batteries
Another challenge is the rising safety issues related to lead-acid batteries. As there is a gas released when batteries are charging, there is a risk for explosion to happen. In addition, the acid in the batteries can also be extremely corrosive which can lead to injuries when it comes into contact with humans. This safety issue can further hinder the market's growth.
To prevent any incidences, there are several precautions. Workers should store or recharge the batteries in a well-ventilated area. The workers should also wear acid-resistant goggles or face shields. When the acid gets into your eyes, clean your eyes with water and immediately seek medical help. | marktwain57 |
1,878,148 | 6 Free Tailwind CSS Modal/Dialog Components [Open-Source] | We’ve put together a collection of awesome modal component examples, and we’re happy to share them... | 27,771 | 2024-06-05T15:12:18 | https://dev.to/creativetim_official/6-free-tailwind-css-modaldialog-components-open-source-37h3 |
We’ve put together a collection of awesome modal component examples, and we’re happy to share them with you. Modals are essential for creating user interfaces, providing a simple way to interact with users - whether you need a simple alert, a detailed form, or more.
These components are coded with **[Tailwind CSS](https://tailwindcss.com/) and [Material Tailwind](https://www.material-tailwind.com?ref=devto)** and the best thing...**they are free and open-source**!
You can copy-paste them directly to your projects. The links to each component's source code can be found below each example.
Happy coding 👨💻
## Modal Component Examples
### 1. Small Modal
This component example works perfectly for simple alerts or confirmation messages thanks to its compact size and centered position.
Get the source code of this [small modal example](https://www.material-tailwind.com/docs/html/dialog#dialog-sizes?ref=devto).
### 2. Large Modal
Use this large modal example for displaying extensive content, like detailed information or forms.
Get the source code of this [large modal example](https://www.material-tailwind.com/docs/html/dialog#dialog-sizes?ref=devto).
### 3. Form Modal
This modal example is designed specifically for forms, containing input fields for user credentials or other data.
Get the source code of this [form modal example](https://www.material-tailwind.com/docs/html/dialog#dialog-with-form?ref=devto).
### 4. Image Modal
Try this modal example for viewing images or graphics in a larger format without leaving the current page.
Get the source code of this [image modal example](https://www.material-tailwind.com/docs/html/dialog#dialog-with-image?ref=devto).
### 5. Web 3.0 Modal
This modal is designed for web 3.0 developers who want to create interfaces for connecting cryptocurrency wallets. It allows users choose from wallet options like MetaMask, Coinbase, and Trust Wallet.
Get the source code of this [Web 3.0 modal example](https://www.material-tailwind.com/docs/html/dialog#web-3-dialog?ref=devto).
### 6. Alert Modal
Use this Tailwind CSS block to display important alerts or warnings to the user.
Get the source code of this [alert modal example](https://www.material-tailwind.com/blocks/modals?ref=devto).
🚀 Looking for even more examples?
Check out our open-source **[Tailwind CSS components library](https://www.material-tailwind.com/?ref=devto)** - Material Tailwind - and browse through 500+ components and website sections.
🤖 Or you can also generate customized blocks easily using the power of AI. Try now for free [Magic AI Blocks](https://www.material-tailwind.com/magic-ai)!
| creativetim_official | |
1,877,658 | Making a Simple Self-Hosted Photo Gallery with 11ty | For someone looking to make a personal space for their creative work on the web, the range of choices... | 0 | 2024-06-05T15:11:39 | https://dev.to/kelp_digital/making-a-simple-self-hosted-photo-gallery-with-11ty-408f | webdev, tutorial, frontend, 11ty | For someone looking to make a personal space for their creative work on the web, the range of choices is so wide that it’s sometimes paralyzing! On the one hand, there are a ton of general-purpose website builders with gallery-like templates. On the other hand, there are specialized services for photographers and graphic designers focusing on hosting visual content.
But there’s a better way to do it—self-host! With a small upfront investment of your time, you can get a good-looking, unique, and fast website and publish it for free! And with this guide, it will be a breeze!
## First of all, why not use a website builder?
Many people are drawn to the simplicity website builders provide without realizing a bunch of limitations that come with it:
- **Lack of customization.** Most website builders have a set of predefined templates and components you can use. They do a decent job at helping you get a professional look but really fall short when it comes to making it personal. What you get in the end is often a clean but plain cookie-cutter website.
- **Branding restrictions.** Depending on the platform, branding options can also be pretty limited. Of course, you can always slap your logo on things and play with fonts, but what if your brand identity is more complex? What if you need a specific color scheme or a niche font? Things get even sadder when services push their own logo or branding on YOUR website.
- **Subscription costs.** A so-called “free plan” is often just a ramp to make you pay hefty fees. Can’t pay this month? Say goodbye to your hard work!
- **Vendor lock-in.** It’s rare to see a website builder have reasonable, convenient export options. No wonder why! They have no incentive to let their paid customers leave. And the longer you stick to one, the more time and effort it will take to migrate.
It doesn’t sound so nice, right? Hopefully, now you’re convinced to give self-hosting a try! But before we jump straight into writing code, let’s decide where to store the images that will be displayed in our gallery.
## Picking a storage for images
Since we’re building a gallery, it must have some images. But where to store and how to serve them? The most obvious option is just commit them to the repository along with the source code. Don't do that, though! First of all, even though Git itself has no explicit limits on file or repository size, platforms do. GitHub, for example, will block any file that’s larger than 100 MB from uploading. And if the repository gets too heavy, you will be nicely asked to scale it down. Or else…
Git LFS is one way to address this. But even so, you still have to download gigabytes of data every time you clone a repository. Besides, there are not many independent Git LFS providers, and the storage costs can get pretty high quickly. You can approach file storage in many different ways, from S3 buckets to your own VPS with Nginx (who’s going to stop you anyway).
For this guide, we will use Macula.Link, a digital asset manager for artists, creators, and developers who value freedom and want to regain control of their content. Specifically, the features we’re going to use are called Data Sources and Universal Links. But more on that later.
> Learn more about Macula and sign up for a free, no-strings-attached plan [here](https://macula.link).
You don’t strictly need to use Macula to follow along with this tutorial, but I highly recommend you get a free account. It’s going to make things much easier!
## Preparing and hosting the images
A portfolio can’t exist without something to display. So step zero is to pick some images and have them at hand. You don’t need to process or compress them; we will do that later, right in Macula.
The first feature we’re going to use to make our lives easier is called [**Data Sources**](https://www.notion.so/f09c7c8bc44a4513b00e963e16f1abf7?pvs=21). In a nutshell, Data Sources act as endpoints for files and folders, allowing you to query details and metadata without loading the file itself. There will be a whole post on Data Sources soon, so make sure to give us a follow!
Log into Macula and create a new folder. Call it “portfolio” or anything that makes sense to you. Then open the folder and upload those images. Now let's do some magic! Click on the cogwheel button, activate the “Datasource” checkbox, set the license, and click Save.
With this single click, you have done a ton of work! Macula has automatically generated an optimized version of each image in the folder (the originals remain intact) along with a Universal Link to share it. You can see this by clicking on an image and going to the Transformations tab.
But wait, what’s the deal with those “Universal” Links? Well, they are called like that for a reason! Depending on how you make the request, each link can act as:
1. An **SEO-optimized web page** if you append `/` at the end of the URL.
2. A **direct link** **to serve the file** if you don’t append `/` at the end of the URL.
3. A **Data Source** with extensive details about the file if you add `.json` at the end of the URL.
> You can learn more about Universal Links and how they work in our [documentation](https://www.notion.so/Universal-Link-better-way-to-publish-share-ccba62079598451abbd961b9776e9ac1?pvs=21).
For now, we’re finished with the preparations. Let’s get to building the gallery!
Roll up your sleeves - let’s build!
We will use [Eleventy](https://www.11ty.dev/) as a static site generator of choice and [Netlify Drop](https://app.netlify.com/drop) for free hosting. Of course, this is not the only combination; feel free to use any tool and hosting you like. One of the cool things about Eleventy is that it supports multiple template languages. We’ll use Nunjucks for this tutorial. Don’t worry if you haven’t used it before. For this tutorial, basic HTML knowledge is enough!
Our gallery will have a single index page with a grid of thumbnails. The grid has to be responsive to look good on different screen sizes. Clicking on each thumbnail will lead the visitor to the preview page with all the information about the picture and quick links to share and use it, which looks like this:
To help you get started even faster, here’s a template repository that contains everything we do further:
{% embed https://github.com/alxwnth/macula-11ty-gallery %}
### Scaffolding the layout
If you decided to follow along, buckle up! Create a directory for your portfolio, then create an `_includes` directory inside. We will put things like styles and layouts there. Then create another directory called `_layouts` and a `root.njk` file inside it with the following contents:
```html
<!DOCTYPE html>
<html lang="en">
<head>
<title>My personal gallery - {{ title }}</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="CHANGEME">
<meta name="keywords" content="">
<link rel="icon" type="image/x-icon" href="/favicon.ico" />
<link rel="stylesheet" href="/style.css" />
</head>
<body>
<main>
{% block content %}
{{ content | safe }}
{% endblock content %}
</main>
</body>
</html>
```
This is a simple HTML boilerplate with two variables: `{{ title }}` to give each page a unique title and `{{ content }}` block is where the actual contents of the child pages will go. Notice that we add a `safe` [filter](https://www.11ty.dev/docs/filters/) here. It un-escapes everything we put on the page. Escaping is a technique often used in preventing [XSS vulnerabilities](https://cheatsheetseries.owasp.org/cheatsheets/Cross_Site_Scripting_Prevention_Cheat_Sheet.html). In simple words, escaping will render all HTML tags as plain text. So if we remove the `safe` filter, our contents will look like this:
### Adding front matter
Next, create an `index.njk` and add the [front matter](https://www.11ty.dev/docs/data-frontmatter/):
```yaml
---
layout: layouts/root.njk
title: Homepage
---
```
Front matter contains the variables we need on the page, helping us specify the layout, title, and other data. By default, front matter follows YAML format but you can change it to JSON or even JavaScript Object.
Let’s add the links to our images to the front matter so we can iterate through them with a loop later. Note that you will need a *direct* link (without trailing slash), not a *preview* link!
Add a `photos:` key to the front matter with a few photos. The final result will look like this:
```yaml
---
layout: layouts/root.njk
title: Homepage
photos:
- https://u.macula.link/ByD155QBR0yNgL94YRvsdw-7
- https://u.macula.link/AEL6JsQoSk695cl805YWiQ-7
- https://u.macula.link/vgJasPbpRNi57GTm_JGIgA-7
---
```
> These are real Universal Links, feel free to use them to play around and experiment!
### Looping through the images
Since we’re laz… I mean, efficient, let’s keep things DRY by using a loop instead of adding each individual image manually. An example of a Nunjucks loop iterating through an array of images looks like this:
```python
{% for photo in photos %}
{{ photo }}
{% endfor %}
```
But simply rendering a bunch of URLs is not what we want. Let’s add some markup to start bringing the gallery to life:
```html
<div class="gallery">
{% for photo in photos %}
<div class="gallery-item">
<a href="{{ photo }}/" target="_blank">
<img src="{{ photo }}" width="800" height="600" alt="My image" />
</a>
</div>
{% endfor %}
</div>
```
Notice that we use the same Universal Link both as `src` property of the image, and as link’s `href` property, but with a trailing slash.
### A touch of style
So far we just have a few images stacked on top of each other. This can be just fine if you’re into radical minimalism but let’s touch things up a little bit.
Inside the `_includes` directory, create a `style.css` file with the following contents:
```css
.gallery {
display: flex;
flex-wrap: wrap;
justify-content: space-between;
}
.gallery-item {
flex: 0 0 calc(33.33% - 20px);
margin: 10px;
}
.gallery-item img {
width: 100%;
height: auto;
display: block;
}
@media (max-width: 768px) {
.gallery-item {
flex: 0 0 calc(50% - 20px);
}
}
```
This is enough to have photos displayed in a flexible grid that adapts to the screen size: the larger the screen, the more images will be in a row. It’s a very simple style so feel free to expand and modify it according to your taste!
## Building everything
The final step before building is creating an `.eleventy.js` file where we will configure the [passthrough file copy](https://www.11ty.dev/docs/copy/):
```js
module.exports = function (eleventyConfig) {
eleventyConfig.addPassthroughCopy({ "_includes/style.css": "style.css" });
};
```
What we do here is simply copy the `style.css` from the `_includes` directory in our working space to the root of the site.
Now just run Eleventy:
```bash
npx @11ty/eleventy
```
And you will see a new directory named `_site` that contains your built site, ready to be deployed anywhere.
## Deploy time!
Sign up for Netlify (or an alternative provider) and upload the `_site` folder. Once the upload is complete, the portfolio will come online!
If you have a domain name, you can use it instead of a subdomain provided by Netlify. To do this, go to **Domain Settings** and click **Add domain alias**. Enter the domain you want to assign to the site and follow the instructions to configure the DNS records.
And that’s it! Give yourself a pat on the back as you admire your creation going live on the World Wide Web. 🎉
## Further steps
This is pretty much it! Once the site is up and running, you have a ton of possibilities to make it even better. Here are some suggestions for you to get started:
- Make more versions of your images (e.g., smaller thumbnails) using [Macula Transformations](https://www.notion.so/Intro-to-image-transformations-3e96dc38215146409495009a9a65eb8d?pvs=21).
- Add a touch of your personal style to the website.
- Add pages for different albums, your info and contacts.
- Display image details by using [Macula Data Sources](https://www.notion.so/f09c7c8bc44a4513b00e963e16f1abf7?pvs=21).
- Have fun and experiment!
Once you’re satisfied with results, go show if off to the world, starting with this comment section! | alxwnth |
1,878,147 | Using GraphQL with Node.js (e.g., Apollo Server) | Using GraphQL with Node.js (e.g., Apollo Server) GraphQL is a powerful query language for... | 0 | 2024-06-05T15:10:03 | https://dev.to/romulogatto/using-graphql-with-nodejs-eg-apollo-server-o9 | # Using GraphQL with Node.js (e.g., Apollo Server)
GraphQL is a powerful query language for APIs that was developed by Facebook. It provides a more efficient and flexible way to retrieve data compared to traditional RESTful APIs. In this guide, we will explore how to use GraphQL with Node.js, specifically focusing on the popular library called Apollo Server.
## Prerequisites
Before diving into the details of using GraphQL with Node.js, make sure you have the following prerequisites installed:
- [Node.js](https://nodejs.org) version 12 or above.
- A code editor of your choice, such as [Visual Studio Code](https://code.visualstudio.com).
## Setting up a new project
To begin using GraphQL with Node.js, start by setting up a new project:
1. Create a new directory for your project and navigate into it:
```bash
$ mkdir my-project
$ cd my-project
```
2. Initialize a new npm package in your project directory:
```bash
$ npm init -y
```
3. Install the required dependencies:
```bash
$ npm install apollo-server graphql
```
## Creating an Apollo Server instance
Once you have set up your project and installed the necessary dependencies, it's time to create an instance of Apollo Server:
1. Open your text editor and create a new file named `server.js`.
2. Import the required modules at the top of `server.js`:
```javascript
const { ApolloServer } = require('apollo-server');
const typeDefs = require('./schema'); // We'll define this later.
const resolvers = require('./resolvers'); // We'll define this later.
```
3. Define the configuration options for your server below the imports:
```javascript
const server = new ApolloServer({
typeDefs,
resolvers,
});
```
4. Start listening for incoming requests after defining configuration options:
```javascript
server.listen().then(({ url }) => {
console.log(`Server ready at ${url}`);
});
```
## Defining GraphQL Schema
To define the schema for your GraphQL API, create a new file named `schema.js`:
1. In your preferred text editor, create a new file named `schema.js`.
2. Define your schema using the [GraphQL SDL](https://graphql.org/learn/schema/) syntax in `schema.js`. Here's an example:
```graphql
type Query {
hello: String
}
type Mutation {
updateHello(message: String!): String
}
```
## Implementing Resolvers
Resolvers are responsible for resolving requests made to different fields in your schema. Create a new file named `resolvers.js`:
1. In your text editor, create a new file named `resolvers.js`.
2. Implement resolver functions corresponding to each field defined in the schema. Here's an example:
```javascript
const resolvers = {
Query: {
hello: () => 'Hello from Apollo Server!',
},
Mutation: {
updateHello: (_, { message }) => {
// Perform some logic or database operations here.
return message;
},
},
};
module.exports = resolvers;
```
## Starting the server
With everything set up, it's time to start the Apollo Server:
1. Open a terminal window and navigate to the root directory of your project.
2. Run the following command to start the server:
```bash
$ node server.js
```
3. You should see a log message indicating that the server is ready and listening on a port.
4. Open any web browser and visit [http://localhost:[PORT]/graphql](http://localhost:[PORT]/graphql). Replace `[PORT]` with the actual port number provided by Apollo Server.
Congratulations! You have successfully created an instance of Apollo Server and implemented basic resolvers for your GraphQL schema. You can now start exploring the powerful capabilities of GraphQL with Node.js.
Feel free to check out the official documentation of [Apollo Server](https://www.apollographql.com/docs/apollo-server/) and [GraphQL](https://graphql.org/) for more detailed information on advanced topics and best practices. Happy coding!
| romulogatto | |
1,877,999 | Finally: declarative, dynamic markup done right - Async Iterators UI framework | I've been writing web backends and frontends since the 90s. CGI, ISAPI, AJAX - you name it, there's... | 0 | 2024-06-05T15:06:13 | https://dev.to/matatbread/ive-been-writing-web-backends-and-frontends-since-the-90s-finally-declarative-dynamic-markup-done-right-3jmj | webdev, javascript, typescript, html | I've been writing web backends and frontends since the 90s. CGI, ISAPI, AJAX - you name it, there's not a TLA I've not used to write production quality, real-time, dynamic services presented in browsers.
CGI works, but delivering a whole page or frame was a lot of work for servers and session managers and lacked the interactivity users expect. React brought a consistent definition for modular, re-usable web elements, but once you've gone beyond simple components, the sheer size and complexity of its implementation makes it a bit painful. This has been addressed by libraries like raw.js, but they fundamentally don't manage the UI interactivity tree, they merely provide alternative ways create markup.
Whether front-end (React & similar frameworks) or backend (CGI, templating systems), the basic requirement is always to declare some HTML with dynamic substitutions:
```html
<html>
<body>
<h1>Hello ${name}!</h1>
<div>Here is the news...</div>
${newsItems}
</body>
</html>
```
It doesn't matter whether the server fills in the substitutions on the fly à la CGI, or the client does it via a virtual DOM, the goal is to layout the content, allowing for some magical process to update it automatically.
Modern browsers provide some key technologies to do this natively without the need for a build process so complex and a dependency tree so dense you'd be lucky to ever escape the forest to the sunlit uplands of actual project delivery!
[AI-UI "Async Iterator UI"](https://github.com/MatAtBread/AI-UI) does this in a tiny, focused client-side module, with no dependancies, using native JavaScript constructs.
## The problem with templates
The essential problem with most templating tools is that the underlying variables are themselves fixed values at the time the template is processed. The tool or framework has to somehow re-read or track changes to the `${variables}` and `${expressions}` within your layout (or, worse still, you have to use some arcane syntax or function to set and get "state"), and then work out what that means for the final markup.
In AI-UI, your variables and expressions can themselves be "live" - they can update themselves, directly updating the DOM with no diffing, naturally implementing minimal updates.
You can think of them like cell references in spreadsheet: you update one cell and all the others recalculate and redraw themselves.
This is achieved by simply allowing the substitutions in AI-UI layout to be JavaScript [async iterators](https://dev.to/search?utf8=%E2%9C%93&q=async+iterators) or [promises](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise) (of course, they can just be normal static expressions too).
## Iterators, events, components
To make it as easy to use as possible, AI-UI provides some key features:
* a library of key functions for handling async iterators (`map`, `filter`, `consume`, `merge`, `combine`...)
* presenting DOM events as async iterators, so you can quickly and easily link DOM elements together, without having to manage a whole tangle of event-listeners and their removal when the DOM is modified
* encapsulating DOM elements together in a type-safe construct, so consumers of your components know exactly what attributes can be set to control your components
* allowing you to define new DOM element properties as `iterable`, so you can easily read, write and subscribe to changes with basic JavaScript syntax like `weatherChart.location = "London";`
* a handy Chrome Devtools extension for exploring your DOM components and their hierarchy, and helpful logging during develiopment.
All elements created by AI-UI are standard DOM elements, and support the full, standard DOM API so you can integrate them with any existing web site or framework.
## Specifying your layout
Because AI-UI is a JavaScript module, you specify the layout as a series of function calls. However, it also fully supports JSX and [htm](https://github.com/developit/htm), so you can use a more familiar markup at the cost of the loss of some type safety. There's more about these choices in the AI-UI guide [here](https://github.com/MatAtBread/AI-UI/blob/main/guide/tsx.md).
In this, article, I'll use the functional notation as it's the most type-safe. It really simple: a DOM element is created by calling the function named after the element:
```javascript
// AI-UI uses normal functions to create fully typed elements
const elt = div("Hello ",
span({style: 'color: green'},
" there ", name
)
);
// elt is derived from HTMLDivElement
```
...which generates exactly the same result as:
```javascript
// HTM uses tagged template strings to create one or more Nodes
const elt = html`
<div>Hello
<span style="color: green">
there ${name}
</span>
</div>`;
// elt is a Node or Node[]
// JSX uses a transpiler to change the markup into function calls that return an unknown type
const elt =
<div>Hello
<span style="color: green">
there {name}
</span>
</div>;
// elt is any
```
The element creation functions all take an optional object specifying any attributes, and zero or more child nodes, which can be strings, numbers, DOM Nodes, collections of these or promises or async iterators for any of the above.
The magic here is that `name`, can be not only a value like `"Mat"` or `123`, but also an async iterator that generates these values. When the async iterator generates a new value, AI-UI will update the DOM to reflect the change directly.
## Tick tock!
Here is the complete code for a simple clock:
```html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- There are also CommonJS and ESM builds -->
<script src="https://unpkg.com/@matatbread/ai-ui/dist/ai-ui.js"></script>
</head>
<body>
</body>
<script>
/* Specify what base tags you reference in your UI */
const { h2, div } = AIUI.tag();
/* Define a _new_ tag type, called `App`, based on the standard "<div>" tag,
that is composed of an h2 and div elements. It will generate markup like:
<div>
<h2>Hello World</h2>
<div>{some content goes here}</div>
</div>
*/
const App = div.extended({
constructed() {
// When constructed, this "div" tag contains some other tags
return [
// h2(...) is "tag function". It generates an "h2" DOM element with the specified children
h2("Hello World"),
// div(...) is also "tag function". It generates an "div" DOM element with the specified children
div(clock())
]
}
});
/* Add add it to the document so the user can see it! */
document.body.appendChild(
// App(...) is also a "tag function", just like div()
// and h2(), created by extended() which generates a "div"
// containing the DOM tree returned by constructed().
App({
style:{
color: 'blue'
}
},
'Tick Tock')
);
/* A simple async "sleep" function */
function sleep(seconds) {
return new Promise(resolve => setTimeout(resolve, seconds * 1000))
}
/* The async generator that yields the time once a second */
async function *clock() {
while (true) {
yield new Date().toString();
await sleep(1);
}
}
</script>
```
You can specify attributes, content, children - in fact anything you can insert into a DOM - using native JavaScript async iterators, generators or promises.
## Where next?
The above example just demonstrates the first step unleashed by the power of async iterators in UI.
The AI-UI `when(...)` function creates iterators from other DOM elements, so you can make one element control another, and the `iterable` member of an `extended` component allows you to implement "hot" properties in your own components, which can be used to update your components with a simple assignment.
There's a guide on [GitHub](https://github.com/MatAtBread/AI-UI/tree/main?tab=readme-ov-file#get-started) together with some examples, like this [weather chart](https://raw.githack.com/MatAtBread/AI-UI/main/guide/examples/ts/ts-example.html?weather.htm.ts) (open dev tools to see how it works).
The underlying concepts in AI-UI have been used in projects for over a decade, both public and private, with hundreds of thousands of users. After 10 years of refinement, the time is right to share it.
Given AI-UI is new to open source, it'd be great to get your feedback and I'm actively looking for collaborators to help hone the API and set the direction for future developments.
I look forward to seeing your comments or questions here, or on the Github repo. | matatbread |
1,878,146 | Create tooltips quickly and easily | Create simple tooltips with HTML/CSS with minimal JavaScript? I'll show you how to do it 🪄 You... | 0 | 2024-06-05T15:03:33 | https://blog.disane.dev/en/create-tooltips-quickly-and-easily/ | programming, internet, html, css | Create simple tooltips with HTML/CSS with minimal JavaScript? I'll show you how to do it 🪄
---
You just want to create a tooltip in HTML/CSS and don't want to use the title attribute, but create your own tooltip instead? It's easier than you think and you don't need any external libraries.
## Data attribute to the rescue ⛑️
The core is the [data attribute](https://www.w3schools.com/tags/att%5Fdata-.asp) of HTML. This allows us not only to pass JavaScript data from HTML, but also to pass it to CSS and use it there. CSS offers a way to retrieve this attribute and use it in CSS classes. With `attr()` we can now grab the content and display it as `content`.
[attr() - CSS: Cascading Style Sheets | MDNThe attr() CSS function is used to retrieve the value of an attribute of the selected element and use it in the stylesheet. It can also be used on pseudo-elements, in which case the value of the attribute on the pseudo-element's originating element is returned.](https://developer.mozilla.org/en-US/docs/Web/CSS/attr?retiredLocale=de)
With a little styling and minimal JavaScript, you can create beautiful and appealing tooltips that also match the design of your website.
## The code 👨🏼💻
Let's assume we want to add a tooltip to a button. Generally, you can do this with the `title` attribute, but they don't look nice and are also quite inflexible in terms of styling options.
[title - HTML: HyperText Markup Language | MDNThe title global attribute contains text representing advisory information related to the element it belongs to.](https://developer.mozilla.org/en-US/docs/Web/HTML/Global%5Fattributes/title?retiredLocale=en)
In our example, we simply want to generate a button with a tooltip. This looks like this:
```html
<button class="tooltip" data-tooltip="This is a tooltip!">Hover over me</button>
```
And this is where the `Data attribute` comes into play! We use it to create a new attribute `data-tooltip`. We then pass this attribute value on to CSS:
```css
/* Styles for the tooltip */
.tooltip {
position: relative; /* Position relative to contain the tooltip */
cursor: pointer; /* Pointer cursor for better UX */
}
/* Hide the tooltip by default */
.tooltip::after {
content: attr(data-tooltip); /* Use the data-tooltip attribute value */
position: absolute; /* Position the tooltip */
background-color: #333; /* Dark background */
color: #fff; /* White text */
padding: 5px; /* Some padding */
border-radius: 5px; /* Rounded corners */
white-space: nowrap; /* Prevent line breaks */
opacity: 0; /* Start hidden */
visibility: hidden; /* Start hidden */
transition: opacity 0.3s; /* Smooth transition */
}
/* Show the tooltip on hover */
.tooltip:hover::after {
opacity: 1; /* Show the tooltip */
visibility: visible; /* Make the tooltip visible */
}
```
As you can see, we have passed the content of the attribute to CSS and can thus use and display the content quite smoothly.
[content - CSS: Cascading Style Sheets | MDNThe content CSS property replaces content with a generated value. It can be used to define what is rendered inside an element or pseudo-element. For elements, the content property specifies whether the element renders normally (normal or none) or is replaced with an image (and associated "alt" text). For pseudo-elements and margin boxes, content defines the content as images, text, both, or none, which determines whether the element renders at all.](https://developer.mozilla.org/en-US/docs/Web/CSS/content?retiredLocale=de)
### Positioning of the tooltip 📰
Now, however, we may also want to be able to decide where the tooltip is displayed, whether at the top bottom or on the left and right. We can also use the data attribute for this by writing our own classes for this and positioning the tooltip accordingly with `transform`:
```css
.tooltip[data-position="top"]::after {
bottom: 100%; /* Position above the element */
left: 50%; /* Center the tooltip */
transform: translateX(-50%); /* Center the tooltip */
margin-bottom: 10px; /* Space between tooltip and element */
}
.tooltip[data-position="bottom"]::after {
top: 100%; /* Position below the element */
left: 50%; /* Center the tooltip */
transform: translateX(-50%); /* Center the tooltip */
margin-top: 10px; /* Space between tooltip and element */
}
.tooltip[data-position="left"]::after {
right: 100%; /* Position to the left of the element */
top: 50%; /* Center the tooltip */
transform: translateY(-50%); /* Center the tooltip */
margin-right: 10px; /* Space between tooltip and element */
}
.tooltip[data-position="right"]::after {
left: 100%; /* Position to the right of the element */
top: 50%; /* Center the tooltip */
transform: translateY(-50%); /* Center the tooltip */
margin-left: 10px; /* Space between tooltip and element */
}
```
[transform - CSS: Cascading Style Sheets | MDNThe transform CSS property lets you rotate, scale, skew, or translate an element. It modifies the coordinate space of the CSS visual formatting model.](https://developer.mozilla.org/en-US/docs/Web/CSS/transform)
### Dynamic positions ⚗️
So that the tooltip does not run beyond the viewport limits, we use a small JavaScript that calculates the distances to the viewport and sets the appropriate `data-position`:
```js
document.addEventListener('DOMContentLoaded', function() {
const tooltips = document.querySelectorAll('.tooltip');
tooltips.forEach(tooltip => {
tooltip.addEventListener('mouseover', () => {
const tooltipRect = tooltip.getBoundingClientRect();
const viewportWidth = window.innerWidth;
const viewportHeight = window.innerHeight;
const tooltipText = tooltip.getAttribute('data-tooltip');
if (tooltipRect.top > 50) {
tooltip.setAttribute('data-position', 'top');
} else if (viewportHeight - tooltipRect.bottom > 50) {
tooltip.setAttribute('data-position', 'bottom');
} else if (tooltipRect.left > 50) {
tooltip.setAttribute('data-position', 'left');
} else if (viewportWidth - tooltipRect.right > 50) {
tooltip.setAttribute('data-position', 'right');
}
});
});
});
```
That's it! You have now created your own tooltip with (almost) pure CSS and HTML, which you can style very well and use in your website.
### Interactive example 🛝
---
If you like my posts, it would be nice if you follow my [Blog](https://blog.disane.dev) for more tech stuff. | disane |
1,878,145 | Einfach und schnell Tooltips erstellen | Einfache Tooltips mit HTML/CSS mit minimalem JavaScript erstellen? ich zeig dir wie es geht 🪄 Du... | 0 | 2024-06-05T15:03:24 | https://blog.disane.dev/einfach-gehen-tooltips-nicht/ | programmierung, internet, html, css | Einfache Tooltips mit HTML/CSS mit minimalem JavaScript erstellen? ich zeig dir wie es geht 🪄
---
Du willst mal eben einen Tooltip in HTML/CSS erstellen und willst dabei nicht das Title-Attribut nutzten, sondern einen eigenen Tooltip erstellen? Das geht einfacher als du denkst und dafür brauchst du keine externe Bibliotheken.
## Data-Attribut to the rescue ⛑️
Kernstück ist das [Data-Attribut](https://www.w3schools.com/tags/att%5Fdata-.asp) von HTML. Damit können wir nicht nur JavaScript Daten aus HTML übergeben, sondern auch an CSS übergeben und es dort nutzen. CSS bietet nämlich eine Möglichkeit an, dieses Attribut abzufischen und in CSS-Klassen zu verwenden. mit `attr()`können wir uns denn Inhalt nun schnappen und als `content` anzeigen.
[attr() - CSS: Cascading Style Sheets | MDNThe attr() CSS function is used to retrieve the value of an attribute of the selected element and use it in the stylesheet. It can also be used on pseudo-elements, in which case the value of the attribute on the pseudo-element’s originating element is returned.](https://developer.mozilla.org/en-US/docs/Web/CSS/attr?retiredLocale=de)
Mit ein bisschen Styling und minimalem JavaScript kannst du so schöne und ansprechende Tooltips erzeugen, die auch zum Design deiner Website passen.
## Der Code 👨🏼💻
Nehmen wir an, wir möchten einen Button mit einem Tooltip ausstatten. Generell kann man das mit dem `title`\-Attribut machen, aber die sehen nicht schön aus und sind auch recht unflexibel was die Styling-Möglichkeiten angehen.
[title - HTML: HyperText Markup Language | MDNThe title global attribute contains text representing advisory information related to the element it belongs to.](https://developer.mozilla.org/en-US/docs/Web/HTML/Global%5Fattributes/title?retiredLocale=de)
In unserem Beispiel möchten wir einfach einen Button mit einem Tooltip generieren. Dieser sieht wie folgt aus:
```html
<button class="tooltip" data-tooltip="This is a tooltip!">Hover over me</button>
```
Und hier kommt das `Data-Attribut`zum Tragen! Wir erzeugen damit ein neues Attribut `data-tooltip`. Diesen Wert des Attributes geben wir dann an CSS weiter:
```css
/* Styles for the tooltip */
.tooltip {
position: relative; /* Position relative to contain the tooltip */
cursor: pointer; /* Pointer cursor for better UX */
}
/* Hide the tooltip by default */
.tooltip::after {
content: attr(data-tooltip); /* Use the data-tooltip attribute value */
position: absolute; /* Position the tooltip */
background-color: #333; /* Dark background */
color: #fff; /* White text */
padding: 5px; /* Some padding */
border-radius: 5px; /* Rounded corners */
white-space: nowrap; /* Prevent line breaks */
opacity: 0; /* Start hidden */
visibility: hidden; /* Start hidden */
transition: opacity 0.3s; /* Smooth transition */
}
/* Show the tooltip on hover */
.tooltip:hover::after {
opacity: 1; /* Show the tooltip */
visibility: visible; /* Make the tooltip visible */
}
```
Wie du siehst, haben wir damit den Inhalt des Attributes an CSS übergeben und können damit recht geschmeidig den Inhalt nutzen und anzeigen.
[content - CSS: Cascading Style Sheets | MDNThe content CSS property replaces content with a generated value. It can be used to define what is rendered inside an element or pseudo-element. For elements, the content property specifies whether the element renders normally (normal or none) or is replaced with an image (and associated “alt” text). For pseudo-elements and margin boxes, content defines the content as images, text, both, or none, which determines whether the element renders at all.](https://developer.mozilla.org/en-US/docs/Web/CSS/content?retiredLocale=de)
### Positionierung des Tooltips 📰
Nun möchten wir aber auch möglicherweise entscheiden können, wo der Tooltip angezeigt wird, ob oben unten oder links und rechts. Auch dafür können wir das Data-Attribut nutzen, in dem wir eigene Klassen dafür schreiben und den Tooltip entsprechend mit `transform` positionieren:
```css
.tooltip[data-position="top"]::after {
bottom: 100%; /* Position above the element */
left: 50%; /* Center the tooltip */
transform: translateX(-50%); /* Center the tooltip */
margin-bottom: 10px; /* Space between tooltip and element */
}
.tooltip[data-position="bottom"]::after {
top: 100%; /* Position below the element */
left: 50%; /* Center the tooltip */
transform: translateX(-50%); /* Center the tooltip */
margin-top: 10px; /* Space between tooltip and element */
}
.tooltip[data-position="left"]::after {
right: 100%; /* Position to the left of the element */
top: 50%; /* Center the tooltip */
transform: translateY(-50%); /* Center the tooltip */
margin-right: 10px; /* Space between tooltip and element */
}
.tooltip[data-position="right"]::after {
left: 100%; /* Position to the right of the element */
top: 50%; /* Center the tooltip */
transform: translateY(-50%); /* Center the tooltip */
margin-left: 10px; /* Space between tooltip and element */
}
```
[transform - CSS: Cascading Style Sheets | MDNThe transform CSS property lets you rotate, scale, skew, or translate an element. It modifies the coordinate space of the CSS visual formatting model.](https://developer.mozilla.org/en-US/docs/Web/CSS/transform)
### Dynamische Positionen ⚗️
Damit der Tooltip nun nicht über die Viewport-Grenzen hinaus läuft, nutzen wir ein kleines JavaScript, was die Abstände zum Viewport ausrechnet und das passende `data-position`setzt:
```js
document.addEventListener('DOMContentLoaded', function() {
const tooltips = document.querySelectorAll('.tooltip');
tooltips.forEach(tooltip => {
tooltip.addEventListener('mouseover', () => {
const tooltipRect = tooltip.getBoundingClientRect();
const viewportWidth = window.innerWidth;
const viewportHeight = window.innerHeight;
const tooltipText = tooltip.getAttribute('data-tooltip');
if (tooltipRect.top > 50) {
tooltip.setAttribute('data-position', 'top');
} else if (viewportHeight - tooltipRect.bottom > 50) {
tooltip.setAttribute('data-position', 'bottom');
} else if (tooltipRect.left > 50) {
tooltip.setAttribute('data-position', 'left');
} else if (viewportWidth - tooltipRect.right > 50) {
tooltip.setAttribute('data-position', 'right');
}
});
});
});
```
Das war's auch schon! Damit hast du nun deinen eigenen Tooltip mit (fast) purem CSS und HTML erstellt, den du sehr gut stylen und in deiner Website nutzen kannst.
### Interaktives Beispiel 🛝
---
If you like my posts, it would be nice if you follow my [Blog](https://blog.disane.dev) for more tech stuff. | disane |
1,878,144 | How AI is Simplifying Landing Page Creation for SaaS Companies | In the rapidly evolving digital marketplace, SaaS companies are constantly seeking innovative ways to... | 0 | 2024-06-05T15:01:57 | https://dev.to/vincivinni/how-ai-is-simplifying-landing-page-creation-for-saas-companies-1cf2 | In the rapidly evolving digital marketplace, SaaS companies are constantly seeking innovative ways to capture the attention of potential customers. Landing pages are a critical tool in this quest, often serving as the first impression for a potential lead or customer. However, the process of creating an effective landing page can be time-consuming and complex. Enter the era of AI-powered tools, simplifying this very process, and leading the charge is Pixie, from GPTConsole.
Pixie is an AI agent that possesses the ability to generate production-ready web applications from simple text prompts. This technology is not only revolutionizing the way developers work but is also breaking barriers for non-technical users aiming to establish a strong online presence. With its newest offering - the free landing page generator - Pixie demonstrates its remarkable capabilities.
**The Free Landing Page Generator**
The free landing page generator by Pixie is a glimpse into what the full AI agent can do. It allows users to quickly create a bespoke landing page without the hassle of coding. The tool is intuitive, featuring an easy-to-use interface where users can edit text, change images, and remove sections as needed.
The generated page consists of 11 distinct sections, each meticulously crafted to serve a particular purpose in the user journey. These include:
1.**Header**: Immediately catches the eye with a clear value proposition.
2.**Applications**: Demonstrates the versatility of the product.
3.**Features**: Showcases the product's key benefits.
4.**Stats**: Visual statistics to underline credibility.
5.**Team**: Humanizes the brand by presenting the people behind it.
6.**Testimonials**: Offers social proof from existing users or clients.
7.**Pricing**: Outlines plans and pricing transparently.
8.**FAQ**: Addresses common queries to reduce friction.
9.**Blog**: Shares insights and news, driving engagement.
10.**Footer**: Contains all necessary contact information and legal links.
Each section is meticulously designed to engage visitors, funneling them towards conversion. The landing pages generated demonstrate Pixie's capability in crafting AI applications such as text generation, image generation, and text-to-speech tools.
**Simplicity Meets Sophistication**
What sets Pixie's free landing page generator apart is its simplicity. Users can easily maneuver through the interface, making edits, and personalizing their landing page with a few clicks. The sophistication lies in the AI's ability to interpret prompts and translate them into functional design elements.
**Pixie’s Impact on SaaS Companies**
For SaaS companies, this simplification of the landing page creation process has astonishing implications:
**Speed to Market**: Reducing the time from idea to launch helps SaaS businesses stay ahead in a competitive market.
**Resource Efficiency**: With less need for technical staff intervention, companies can allocate their human resources more strategically.
**Scalability**: As businesses grow, Pixie can help quickly generate landing pages for new products or campaigns.
**A/B Testing Made Easy**: Companies can generate multiple landing pages for testing purposes with minimal effort.
**Sample generated page:**
[Link](https://pixie.gptconsole.ai/2ef36ba3-746d-4e6d-ba0c-1bbf6af7810e
)
BizTech Inc., a SaaS startup, is just one of many who have leveraged Pixie's landing page generator. Within a day, they had a prototype ready to test in the market—a task that would have previously taken weeks. Customer testimonials like those from BizTech Inc. emphasize the value and efficiency of Pixie.
**Accessibility and Future Potential**
The free version of Pixie not only democratizes access to high-quality landing pages but also serves as a preview of Pixie's broader skill set. Users who are satisfied with the landing page generator can move on to explore more advanced features available in the full AI agent, expanding their digital landscape far beyond landing pages.
**Conclusion**: The Horizon of AI-Driven Design
Pixie’s free landing page generator is reshaping the narrative around web development, particularly for SaaS companies. By combining the capabilities of AI with user-friendly interfaces, Pixie is setting a new standard for speed, efficiency, and accessibility in digital design and marketing.
Visit [Landingpages.GPTconsole](https://landingpages.gptconsole.ai/) to experience the future of AI-driven web development.
Innovations like Pixie signify a future where SaaS companies can focus more on refining their products and less on the technicalities of marketing them. As AI continues to evolve, so too will the tools that empower businesses, large and small, to make a meaningful impact online.
| vincivinni | |
1,878,142 | Toss의 퍼널(Funnel) 패턴 적용해보기 | "토스 SLASH 23의 퍼널: 쏟아지는 페이지 관리하기" 를 참고하여 작성되었습니다. 링크 토스에서는 다른 통신사들 처럼 요금제 가입 신청서를 받고있다. 차별화된 점은 한... | 0 | 2024-06-05T15:01:09 | https://dev.to/hxxtae/tossyi-peoneolfunnel-paeteon-jeogyonghaebogi-2n7c | react, toss, funnel | > "토스 SLASH 23의 퍼널: 쏟아지는 페이지 관리하기" 를 참고하여 작성되었습니다.
> [링크](https://www.youtube.com/watch?v=NwLWX2RNVcw)
토스에서는 다른 통신사들 처럼 요금제 가입 신청서를 받고있다.
차별화된 점은 한 페이지로 이루어진 폼 대신, 한 페이지에 한 항목만 제출하는 UI를 가지고 있다.
하지만 이런식으로 많은 페이지들을 한 번에 관리하기란 쉽지 않다.
위 발표에서는 이러한 페이지들을 효과적으로 관리하는 방법에 대해서 설명하고 있다.
## 퍼널(Funnel)
퍼널의 사전적인 뜻인 `깔대기` 와 같은 모양을 띠기 때문에 붙여진 이름이라고 한다.
이러한 깔대기 모양인 `퍼널`을 토스의 회원가입 절차에 적용되어 있다고 한다.
그렇다면 어떻게 플로우를 관리할지 궁금한데, 토스에서는 두 가지 예시를 들어주었다.
### 기존 퍼널 방식
완료 버튼을 이용해 `router`를 이동하면서 페이지마다 수집하는 유저의 정보를 전역상태에 저장하며 마지막 페이지에서 api를 호출하는 정석적인 구현방법
### 토스 퍼널 방식
`useState`를 활용하여 유저 정보 및 `page step`을 지역상태로 만들어주고, 가입방식, 주민번호, 집주소 등 현재 어느 UI를 보여줘야하는지 페이지를 조건부 처리하여 step에 따라 원하는 UI로 업데이트 시켜주며 마지막 step에서 api를 호출하는 방법
```tsx
const [registerData, setRegisterData] = useState()
const [step, setStep] = useState<"가입방식"|"주민번호"|"집주소"|"가입성공">("가입방식")
return (
<main>
{step === "가입방식" && <가입방식 onNext={(data) => setStep("주민번호")} />}
{step === "주민번호" && <주민번호 onNext={() => setStep("집주소")} />}
{step === "집주소" && <집주소 onNext={async () => setStep("가입성공")} />}
{step === "가입성공" && <가입성공Step />}
</main>
)
```
## 기존 퍼널의 아쉬운 점 및 보완
기존 퍼널 방식도 완벽해 보이지만 몇 가지 아쉬운점이 있다.
1. **페이지 흐름이 흩어져있다.**
가입 플로우를 파악하기 위해서는 3개의 컴포넌트 파일을 넘나들어야 한다.
2. **한 가지 목적을 위한 상태가 흩어져 있다.**
상태를 수집하는 곳과 사용하는 곳이 달라서, api에 기능을 추가하거나 버그를 수정할 때 전체 페이지를 넘나들며 데이터 흐름을 파악해야 한다.
이를 보완하는 방법이 토스 퍼널 방식에서 확인할 수 있다.
그 방법으로는 퍼널의 `응집도`를 높이고 `추상화`를 통해 라이브러리화를 수행한다.
이 두 가지 키워드를 가지고 기존 방식의 단점을 보완한다.
## 응집도 높이기
```tsx
const [registerData, setRegisterData] = useState()
const [step, setStep] = useState<"가입방식"|"주민번호"|"집주소"|"가입성공">("가입방식")
return (
<main>
{step === "가입방식" && <가입방식 onNext={(data) => {
setRegisterData(prev => ({ ...prev, 가입방식: data })) // 이하 동일
setStep("주민번호")
}} />}
{step === "주민번호" && <주민번호 onNext={() => setStep("집주소")} />}
{step === "집주소" && <집주소 onNext={async () => {
await fetch("/api/register", { data }) // API 호출 장소 변경
setStep("가입성공")
}} />}
{step === "가입성공" && <가입성공Step />}
</main>
)
```
1. `useState`를 이용해 지역상태를 만들어주고 가입방식, 주민번호 등 현재 어느 UI를 보여줘야 하는지 state에 저장한다.
2. 그러면 하나의 컴포넌트 페이지에서 흩어져있는 페이지들을 한 페이지에 응집시켜 관리가 용이하게 만들어 줄 수 있다.
3. 그리고 `step` 상태에 따라 각 UI 컴포넌트를 조건부 렌더링하고, '다음' 버튼을 누를 때 `step` 상태를 원하는 UI로 업데이트 한다.
4. 결과적으로 `step`의 이동을 상위 컴포넌트에서 관리하여 UI 흐름을 한 곳에서 관리할 수 있게 되었다.
마지막으로 API 호출에 필요한 상태도 상위에서 한 번에 관리하면 어떤 상태가 어떤 UI에서 수집되고 있는지 한 눈에 볼 수 있으며, 이제 더 이상 파일을 넘나들면서 전역 상태를 관리하지 않아도 된다.
## 추상화로 재사용성 높이기
```tsx
const [registerData, setRegisterData] = useState()
const [step, setStep] = useState<"가입방식"|"주민번호"|"집주소"|"가입성공">("가입방식")
return (
<main>
<Step if={step === "가입방식"}>
<가입방식 onNext={() => setStep("주민번호")} />
</Step>
<Step if={step === "주민번호"}>
<주민번호 onNext={() => setStep("집주소")} />
</Step>
// ...
</main>
)
```
각 `step`을 컴포넌트로 따로 만들어 주어 중복된 `step` 처리를 추상화 해준다.
그리고 props를 조금 더 깔끔하게 작성해 줄 수 있을 것 같다.
```tsx
const [registerData, setRegisterData] = useState()
const [step, setStep] = useState<"가입방식"|"주민번호"|"집주소"|"가입성공">("가입방식")
return (
<main>
<Step name="가입방식">
<가입방식 onNext={() => setStep("주민번호")} />
</Step>
<Step name="주민번호">
<주민번호 onNext={() => setStep("집주소")} />
</Step>
// ...
</main>
)
```
예제 코드를 보면 조건문을 삭제하고 `name`만 props로 남겼으며, 컴포넌트가 깔끔해진 것을 볼 수 있다.
만들고보니 Step 컴포넌트가 현재 퍼널의 `step`을 알고 있어야 하므로, 이를 위해 퍼널에서 직접 관리하고 있던 `step` 상태도 내부 로직으로 옮겨주기 위해 상태를 담은 함수인 커스텀 훅을 만들어 Step 컴포넌트와 상태를 같이 관리할 수 있게 코드를 짜줍니다. (useFunnel 커스텀 훅 생성)
```tsx
function useFunnel() {
const [step, setStep] = useState()
const Step = (props) => {
return <>{props.children}</>
}
const Funnel = ({ children }) => {
// name이 현재 step 상태와 동일한 Step만 렌더링
const targetStep = children.find(childStep => childStep.props.name === step);
return Object.assign(targetStep, { Step })
}
return [Funnel, setStep]
}
```
```tsx
const [registerData, setRegisterData] = useState()
const [step, setStep] = useFunnel<"가입방식"|"주민번호"|"집주소"|"가입성공">("가입방식")
return (
<Funnel>
<Funnel.Step name="가입방식">
<가입방식 onNext={() => setStep("주민번호")} />
</Funnel.Step>
<Funnel.Step name="주민번호">
<주민번호 onNext={() => setStep("집주소")} />
</Funnel.Step>
// ...
</Funnel>
)
```
여기까지 퍼널의 응집도와 추상화를 거쳐서 보다 가독성있고 재사용성이 높은 퍼널을 완성하였다.
> 퍼널은 완성하였지만 한 가지 불편한 점이 존재하는데, 현재 코드는 단일 URL이라 step 사이에 뒤로가기, 앞으로가기 지원이 안 되는 불편함이 존재한다.
> 이를 router의 shallow push API를 사용해 쿼리파라미터를 업데이트해줘서 가능하도록 구현할 수도 있다.
## 내 코드에 적용하기
커머스 플랫폼을 사용하면 주문 결제 과정을 반드시 거치게 된다.
필자는 커머스 플랫폼 프로젝트에서 토스의 퍼널 패턴을 적용해 결제 과정 즉, 결제 퍼널을 적용하였다.
장바구니에 담겨진 상품을 주문하면 `배송지 주소` > `주문 목록`, `결제 완료` 의 3단계를 거치게 된다.
간단하고 심플한 결제 과정인데 굳이 퍼널 패턴을 적용한 이유는 코드 리펙토링을 수행하면서 유연한 유지보수가 가능하도록 하기 위해 퍼널을 적용하였다.
처음으로 결제 프로세스를 구현해 보았기 때문에 언제든지 결제 프로세스는 변경될 수 있으며, 또한 언제든지 유연하게 코드 수정 및 스타일 수정이 가능하도록 하기 위해 퍼널 패턴을 프로젝트에 적용해 보았다.
### useFunnel
```tsx
import { ReactElement, ReactNode, useState } from 'react';
export interface StepProps {
name: string;
children: ReactNode;
}
export interface FunnelProps {
children: Array<ReactElement<StepProps>>;
}
export const useFunnel = (defaultStep: string) => {
const [step, setStep] = useState(defaultStep);
// Step
const Step = (props: StepProps): ReactElement => {
return <>{props.children}</>;
};
// Funnel
const Funnel = ({ children }: FunnelProps) => {
const targetStep = children.find((childStep) => childStep.props.name === step);
return <>{targetStep}</>;
};
const nextClickHandler = (nextStep: string) => {
setStep(nextStep);
}
const prevClickHandler = (prevStep: string) => {
setStep(prevStep);
}
return {
Funnel,
Step,
currentStep: step,
nextClickHandler,
prevClickHandler
} as const;
};
```
```tsx
const { Funnel, Step, nextClickHandler, prevClickHandler, currentStep } = useFunnel(steps[0].name);
```
부모 컴퍼넌트에서 `useFunnel`을 선언해 주어 자식 컴포넌트 props로 값을 전달하여 모든 상태 관리 및 함수는 최상위 부모 컴포넌트에서 관리해 주도록 하였다.
바로 아래 자식 컴포넌트 코드가 퍼널을 적용한 컴포넌트 코드이다.
### Funnel 적용
```tsx
export const OrderSetup = (
{
steps,
Funnel,
Step,
nextClickHandler,
prevClickHandler,
order,
onSetOrder
}: OrderSetupProps) => {
return (
<>
<Funnel>
<Step name="배송지입력">
<OrderAddress
onNext={() => nextClickHandler(steps[1].name)}
onSetOrder={onSetOrder}
order={order}
/>
</Step>
<Step name="주문목록확인">
<OrderList
onPrev={() => prevClickHandler(steps[0].name)}
onNext={() => nextClickHandler(steps[2].name)}
order={order}
/>
</Step>
<Step name="결제완료">
<OrderResult />
</Step>
</Funnel>
</>
)
}
```
## 마치며
토스의 코드를 흉내내어 퍼널의 개념을 적용해 보았지만, 커스텀 훅과 합성 컴포넌트를 구현하면서 추상화에 대한 고민도 한층 늘었다.
또한 결제 프로세스의 추상화 및 응집도에 대한 POC 과정도 이번 토스 퍼널 패턴을 통해 큰 도움이 되었다.
끝으로 진유림님과의 프라이빗 네크워킹을 신청해 보았는데, 기회가 된다면 꼭 한번 만나 뵙고 싶다. [링크](https://toss.im/slash-23/session-detail/A1-3)
감사합니다.
| hxxtae |
1,876,907 | How to Perform Semantic Search using ChromaDB in JavaScript | This tutorial will cover how to use embeddings and vectors to perform semantic search using ChromaDB... | 0 | 2024-06-05T14:50:59 | https://dev.to/vaatiesther/how-to-perform-semantic-search-using-chromadb-in-javascript-3og8 | ai, machinelearning, javascript, programming |
This tutorial will cover how to use embeddings and vectors to perform semantic search using ChromaDB in JavaScript.
## What are Embeddings
Have you ever wondered how recommendation systems like Netflix almost always know what movies you like? When you log in to Netflix, the app presents recommendations that will likely fit your tastes and preferences;Embeddings power the mechanism behind this.
Embeddings refer to the transformation of words, text, or audio into numerical vectors. A numerical vector is essentially an array of numbers. This transformation preserves the meaning of the words and also captures their relationship to to other words in the vector space.
## What is A vector space
A vector space is a mathematical space where vectors represent data. For example, consider the words 'cat' and 'kitten.' When these words are represented as vectors in a vector space, the vectors capture their semantic relationship, thus facilitating their mapping within the space.
The distance between the 'cat' and 'kitten' vectors measures their relatedness. Since 'cat' and 'kitten' are close to one another, the distance between them is small. Larger distances between vectors indicate that the words or texts are not closely related.
This means that when you search for "cat," the system can recognize the similarity and suggest content related to cats and kittens.
This powerful technology is what allows platforms like Netflix and Spotify to provide you with personalized and accurate recommendations, enhancing your viewing and listening experience.
## How to create Embeddings with OpenAI
OpenAI provides an embedding model that measures the relatedness of text. To get an embedding of our 'cat' and 'kitten' words, we need to send each string to the OpenAI embeddings API endpoint along with the model name
First, define your OpenAI API_KEY
```js
const OPENAI_API_KEY ="your_openai_api_key";
```
Create a function that takes a phrase or word as an argument, sends it to the OpenAI embeddings API, and gives back the embedding.
```js
async function createEmbeddings(word) {
const url = " https://api.openai.com/v1/embeddings";
const headers = {
"Content-Type": "application/json",
Authorization: `Bearer ${OPENAI_API_KEY}`,
};
const data = {
input: word,
model: "text-embedding-3-small",
};
const response = await fetch(url, {
method:'POST',
headers: headers,
body: JSON.stringify(data),
});
const embedding = await response.json();
console.log(embedding.data)
}
```
Now let's invoke the function with the words cat and kitten
```js
createEmbeddings("cat");
createEmbeddings("kitten");
```
The output will look like this:
```sh
[
{
object: 'embedding',
index: 0,
embedding: [
0.02552942, -0.023411665, -0.016092611, 0.03937628, 0.02094483,
-0.02632067, 0.0018908527, 0.030602723, -0.015929706, 0.0053118416,
0.02214334, -0.0002121755, 0.010460779, 0.0031213614, 0.02985802,
0.006265995, -0.021363726, -0.010716772, -0.030532908, 0.057528466,
0.03409353, 0.04589245, 0.020502662, -0.046637155, -0.006871068,
0.03800323, -0.009268087, 0.04405396, 0.051803548, -0.013497779,
0.0033686268, -0.043123078, -0.0112753, -0.029090041, -0.022946225,
0.017768197, 0.017570386, -0.028019529, -0.015743531, 0.01378868,
-0.037281796, -0.008773557, 0.045799363, 0.011473113, 0.009460081,
-0.0533395, -0.022597145, -0.019606689, 0.019362332, 0.037142165,
0.023388393, -0.014870829, 0.01746566, 0.04998833, -0.004168603,
-0.0011636016, -0.019292515, 0.04659061, -0.0029279126, 0.009279723,
-0.024970891, 0.0059925485, 0.02518034, -0.002679193, 0.019420512,
0.038282495, 0.01837327, 0.017232941, -0.05962295, -0.018210366,
-0.0058034635, 0.028415153, -0.062089786, 0.011286936, 0.047218956,
0.009401902, -0.029974379, -0.000250538, 0.062974125, 0.043425616,
0.0011352389, 0.058552437, 0.016243879, -0.025226884, 0.01259017,
-0.023202218, -0.034512427, 0.02850824, 0.011054216, -0.026041405,
-0.0038457036, 0.015487539, -0.044798665, -0.038980655, -0.010332783,
0.043774694, -0.008517564, -0.048219655, -0.001969396, 0.014149397,
... 1436 more items
]
}
]
```
## What is a Vector Database
As the name suggests, a vector database is a database that can store vectors. Unlike traditional databases that use primary keys and foreign keys when querying data, data in vector databases is in the form of highly dimensional vectors. When querying, vector databases use mathematical proximity to find similar items.
## How to Set up A vector database with ChromaDB and Docker
Vector databases are ideal for building complex AI applications. ChromadB is an open-source vector database that requires minimal configuration to get started.
To get started, you should have Docker Installed. Follow the steps below to get it running on your machine:
Pull the ChromaDB docker image from the Docker hub repository.
```sh
docker pull chromadb/chromadb
```
Run the chromaDB container and specify the ports
```sh
docker run -d -p 8080:8080 --name chromadb chromadb/chromadb
```
To verify that the container is running, issue this command
```sh
docker ps
```
You should see the ChromaDB container from your list of running containers.
## Adding Data to the VectorStore
To ensure the semantic meaning of data is accurate, the data needs to be in small chunks, we will start by adding items in an array describing some movies that look like this:
```js
const movies = [
'"Title":"Due Date","Year":"2010","Rated":"R","Released":"05 Nov 2010","Runtime":"95 min","Genre":"Comedy, Drama","Actors":"Robert Downey Jr., Zach Galifianakis, Michelle Monaghan","Plot":"High-strung father-to-be Peter Highman is forced to hitch a ride with aspiring actor Ethan Tremblay on a road trip in order to make it to his child\'s birth on time."',
'"Title":"Easy A","Year":"2010","Rated":"PG-13","Released":"17 Sep 2010","Runtime":"92 min","Genre":"Comedy, Drama, Romance","Actors":"Emma Stone, Amanda Bynes, Penn Badgley","Plot":"When Olive lies to her best friend about losing her virginity to one of the college boys, a girl overhears their conversation. Soon, her story spreads across the entire school like wildfire."',
'"Title":"Unstoppable","Year":"2010","Rated":"PG-13","Released":"12 Nov 2010","Runtime":"98 min","Genre":"Action, Thriller","Actors":"Denzel Washington, Chris Pine, Rosario Dawson","Plot":"With an unmanned, half-mile-long freight train barreling toward a city, a veteran engineer and a young conductor race against the clock to prevent a catastrophe."',
'"Title":"Despicable Me","Year":"2010","Rated":"PG","Runtime":"95 min","Genre":"Animation, Adventure, Comedy","Actors":"Steve Carell, Jason Segel, Russell Brand","Plot":"Gru, a criminal mastermind, adopts three orphans as pawns to carry out the biggest heist in history. His life takes an unexpected turn when the little girls see the evildoer as their potential father."',
'"Title":"Don Henley: Live Inside Job","Year":"2000","Rated":"N/A","Runtime":"105 min","Genre":"Documentary, Music","Actors":"Don Henley, Jonathan K. Bendis, Will Hollis","Plot":"Don Henley performs his greatest hits live in Dallas."',
'"Title":"Harry Potter and the Deathly Hallows: Part 1","Year":"2010","Rated":"PG-13","Runtime":"146 min","Genre":"Adventure, Family, Fantasy","Actors":"Daniel Radcliffe, Emma Watson, Rupert Grint","Plot":"As Harry, Ron and Hermione race against time and evil to destroy the Horcruxes, they uncover the existence of the three most powerful objects in the wizarding world: the Deathly Hallows."',
'"Title":"Tangled","Year":"2010","Rated":"PG",,"Runtime":"100 min","Genre":"Animation, Adventure, Comedy","Actors":"Mandy Moore, Zachary Levi, Donna Murphy","Plot":"The magically long-haired Rapunzel has spent her entire life in a tower, but now that a runaway thief has stumbled upon her, she is about to discover the world for the first time, and who she really is."',
'"Title":"Black Swan","Year":"2010","Rated":"R",,"Runtime":"108 min","Genre":"Drama, Thriller","Actors":"Natalie Portman, Mila Kunis, Vincent Cassel","Plot":"Nina is a talented but unstable ballerina on the verge of stardom. Pushed to the breaking point by her artistic director and a seductive rival, Nina\'s grip on reality slips, plunging her into a waking nightmare."',
'"Title":"The Social Network","Year":"2010","Rated":"PG-13","Released":"01 Oct 2010","Runtime":"120 min","Genre":"Biography, Drama","Actors":"Jesse Eisenberg, Andrew Garfield, Justin Timberlake","Plot":"As Harvard student Mark Zuckerberg creates the social networking site that would become known as Facebook, he is sued by the twins who claimed he stole their idea and by the co-founder who was later squeezed out of the business."',
'"Title":"Toy Story 3","Year":"2010","Rated":"G","Runtime":"103 min","Genre":"Animation, Adventure, Comedy","Actors":"Tom Hanks, Tim Allen, Joan Cusack","Plot":"The toys are mistakenly delivered to a day-care center instead of the attic right before Andy leaves for college, and it\'s up to Woody to convince the other toys that they weren\'t abandoned and to return home."',
'"Title":"A Clockwork Orange","Year":"1971","Rated":"R","Runtime":"136 min","Genre":"Crime, Sci-Fi","Actors":"Malcolm McDowell, Patrick Magee, Michael Bates","Plot":"In the future, a sadistic gang leader is imprisoned and volunteers for a conduct-aversion experiment, but it doesn\'t go as planned."',
'"Title":"Inception","Year":"2010","Rated":"PG-13",,"Runtime":"148 min","Genre":"Action, Adventure, Sci-Fi","Actors":"Leonardo DiCaprio, Joseph Gordon-Levitt, Elliot Page","Plot":"A thief who steals corporate secrets through the use of dream-sharing technology is given the inverse task of planting an idea into the mind of a C.E.O., but his tragic past may doom the project."'
];
```
Import ChromaClient.
```js
import { ChromaClient } from "chromadb";
```
Instantiate a chromaDB client that will connect to the ChromaDBb server.
```js
const client = ChromaClient();
```
### Create a collection.
A collection is a way to organize vectors. Our collection will store all the details and features about the movies in the movies array. Each vector will have the following features:
- ID,
- metadata,
- movie details,
- and embeddings.
Chroma is integrated with OpenAI's Embeddings, which allows it to leverage OpenAI's Embedding capabilities.
Import OpenAIEmbeddingFunction class from chromadb and instantiate an OpenAIEmbeddingFunction class , authenticate with OpenAI and supply your embedding function in creating a collection.
```js
import { ChromaClient,OpenAIEmbeddingFunction } from "chromadb";
const embeddingFunction = new OpenAIEmbeddingFunction({
openai_api_key: OPENAI_API_KEY,
});
```
Create a collection called movies and specify the embedding function.
const collection = await client.createCollection({
name: "movies",
embeddingFunction:embeddingFunction
});
The embedding function ensures that Chroma transforms each individual movie into a multi-dimensional array (embeddings). This will ensure the semantic meaning is maintained, which will be useful when performing queries.
### Add data to the Collection
Each movie should have a unique ID, so we will loop over the movie's array, create a unique ID for each movie, and insert it into the database.
```js
for (const movie of movies) {
const uniqueId = `${Date.now()}-${Math.floor(Math.random() * 10000)}`;
collection.add({
documents: [movie],
ids: [uniqueId],
metadatas: [{ name: movie }],
});
```
To view the collection, navigate to http://localhost:8000/api/v1/collections , and you should see all your collections.
### Perform Similarity Search
Let's first get the collection. Use the .getCollection() method and specify the name of your collection and the embeddingFunction.
```js
const mycollection = await client.getCollection({
name:"movies",
embeddingFunction:embeddingFunction
})
```
### Search Collection
Let's do a query with the phrase “ recommend for me a movie suitable for kids”,
```
const results = await mycollection.query({
queryTexts: ["recommend for me a movie suitable for kids"],
nResults: 2,
});
console.log(results.documents);
```
Here is the response .
```sh
[
[
'"Title":"Despicable Me","Year":"2010","Rated":"PG","Runtime":"95 min","Genre":"Animation, Adventure, Comedy","Actors":"Steve Carell, Jason Segel, Russell Brand","Plot":"Gru, a criminal mastermind, adopts three orphans as pawns to carry out the biggest heist in history. His life takes an unexpected turn when the little girls see the evildoer as their potential father."',
`"Title":"Toy Story 3","Year":"2010","Rated":"G","Runtime":"103 min","Genre":"Animation, Adventure, Comedy","Actors":"Tom Hanks, Tim Allen, Joan Cusack","Plot":"The toys are mistakenly delivered to a day-care center instead of the attic right before Andy leaves for college, and it's up to Woody to convince the other toys that they weren't abandoned and to return home."`
]
]
```
We expected our query to return results that are semantically similar to the query, and as you can see, the response is accurate. Despicable Me and Toy Story 3 are all movies suitable for kids. How awesome is this?
# Conclusion
In conclusion, this tutorial has shown you how to leverage the power of embeddings and ChromaDB to perform semantic searches in JavaScript.
Stay tuned for part 2, where we will cover how to add a retriever.
| vaatiesther |
1,878,134 | Understanding AI Code Analysis and Real-Time Performance Monitoring | Leveraging AI code analysis tools like Pieces can help you save time, optimize your code, and quickly detect bugs. | 0 | 2024-06-05T14:48:46 | https://code.pieces.app/blog/understanding-ai-code-analysis-and-real-time-performance-monitoring | <figure><img src="https://d37oebn0w9ir6a.cloudfront.net/account_32099/ai-code-analysis_8f6102a9064a41553172b0dfe64fb0a0.jpg" alt="Understanding AI Code Analysis."/></figure>
Real-time code monitoring can be a time-consuming endeavor. You must continuously look at output and analyze risks, making immediate changes as needed. Paying careful attention helps developers catch problems and bottlenecks and fix issues before they become significant problems. This improves the code's quality and, by extension, the finished product.
AI code analysis changes the playing field and makes monitoring more hands-off.
## What Is AI Code Analysis?
Advances in machine learning make AI code analysis tools valuable in the 2020s and likely far beyond. [Artificial intelligence automates reviewing code](https://code.pieces.app/blog/enhancing-ai-code-review-efficiency-with-retrieval-augmented-generation) for possible bugs, errors, and vulnerabilities.
Generative AI has become more commonplace in the past few years, but the industry still has a lot of room for growth. One area where AI takes center stage is software development. How effective is it at changing lines of code and automating processes, though?
In a [study of over 153 million lines of AI code changes](https://www.gitclear.com/coding_on_copilot_data_shows_ais_downward_pressure_on_code_quality), researchers found that while AI assistance was good at creating code, it didn't always perform as well as expected weeks later. Fast coding has some advantages, such as when you're working alone on a deadline or need checks and balances. However, you will find limitations to AI-generated code.
On the other hand, analysis allows you to catch and rework mistakes manually so the code matches the rest of the project. Consider it a silent editor, working in the background and finding errors so you can fix them before the software goes to market.
## How Can You Use AI Code Analysis in Real-Time?
Code analysis AI tools look at running software applications and spot problems. As the machine learns how the program works, it will better find and fix errors and optimize performance. While you can automate the fixes, it is best to set AI code analysis programs to make recommendations. That way, you can ensure the program continues to function as intended for the long term.
Utilizing AI for code analysis speeds up the review process. You can also scale up as you add features to the software. Human reviewers may tire after scanning through lines of code for hours, but AI keeps going 24/7. It can work while the developers sleep. AI can look at data from different stops and starts, comparing and finding patterns that might be generated from poorly written code.
### AI Code Analysis With Pieces
It may be easier to understand AI code analysis workflows when looking at a specific example. Pieces is one of the most popular AI tools for code analysis, though you can use it throughout the software development process where it functions mainly as a copilot to assist your work rather than automating it entirely.
You start by choosing a specific model based on your particular needs. From there, it learns from your coding patterns and regular activities to make more relevant suggestions and tailor its automated features to your needs.
How much Pieces automates depends on how you use it. You can ask it to generate new code, extract code from screenshots, search your existing code for specific elements, scan for bugs, or suggest [AI code refactoring](https://docs.pieces.app/build/glossary/terms/ai-code-refactoring) possibilities. It can also annotate or visualize code snippets to improve documentation or explain software functionality to other stakeholders.
Pieces only takes over what you tell it to, which is key to safe AI code analysis. You can choose what to automate and what to handle manually to achieve the optimal balance between reliability and efficiency.
## Examples of How Brands Are Using AI Code Analysis
Brands already use code analysis AI to change how they serve their target audiences. Some of the ways they’re tapping into AI include the following.
### Performance Optimization
Developers sometimes work outside the coding languages they know best. While some similarities exist between code types, [syntax nuances can lead to bugs](https://designerly.com/web-developer-languages/) and low performance. Use AI to find future performance issues and predict problem areas.
AI can help you write stronger code by predicting failures or burps. Machines can also sort through the program's historical performance and find patterns to help ensure the software remains helpful. It can isolate critical code sections and show ways to increase speed and performance.
### Bug Detection
In the past, AI static code analysis programs needed help finding bugs in the system. The larger the codebase, the harder it was to find subtle issues. Tapping into the power of machine learning and AI algorithms leads to faster analysis. AI can track the program as users navigate the steps, identify potential bugs, and suggest ways to fix the problem based on patterns in the database.
### Recommendations
McKinsey estimates [developers can create software twice as fast](https://www.mckinsey.com/capabilities/mckinsey-digital/our-insights/unleashing-developer-productivity-with-generative-ai) by tapping into the power of AI. At first, AI-driven monitoring may seem bothersome and time-consuming. Some of the suggestions will be out in left field. However, as the machine learns and the programmers explain the code’s semantics and the program’s intent, the computer will offer more reliable suggestions for improving performance.
The computer's suggestions become more valuable over time. A central program that continuously monitors changes and applies patterns is helpful when working with multiple developers. AI can make maintenance more scalable.
## Tips to Implement AI Into Your Analysis Processes
How can developers seamlessly insert AI code analysis into their processes?
- Use AI as a tool but rely on human expertise for final decisions.
- Teach AI to respect industry standards and privacy laws. AI is a program that only understands what you input. Take the time to teach it in the early stages of development and it will become a crucial tool as the software takes shape.
- Know what you want AI to achieve. Do you want it to monitor for and report errors or fix them in milliseconds?
- Train everyone on the project on how to use the tools.
- Carefully assess which AI code analysis tools do what you want.
- Utilize AI to conduct testing in the background, speeding up development.
The best AI for code analysis should integrate into the process you already use to create new programs. Everyone on the team should agree on best practices and follow them to train the machine to function appropriately.
## Leverage AI Code Analysis for Efficiency
New AI advances are changing how businesses operate, especially in code monitoring. Machine learning brings new abilities and ongoing improvement that will take coding to a new level in the coming years. Developers can better analyze their language models for errors and create software for clients.
Programs will be more secure, less glitchy, and more easily integrated with existing products. Users can enjoy higher-quality products with fewer problems. AI source code analysis combined with the human factor leads to intuitive designs that function precisely as intended. | get_pieces | |
1,878,133 | SQL Mastery: Unleashing the Power of Queries | Introduction to SQL: SQL, or Structured Query Language, serves as the primary means of... | 0 | 2024-06-05T14:47:51 | https://dev.to/mahabubr/sql-mastery-unleashing-the-power-of-queries-5bnl | sql, database, query, development | ## **Introduction to SQL:**
SQL, or Structured Query Language, serves as the primary means of communication with relational databases. It offers a standardized syntax for managing and querying data, facilitating efficient data retrieval, modification, and maintenance.
## **SQL Queries:**
**1. Create a Database:**
To initiate a new database, the following command is utilized:
```
CREATE DATABASE dbname;
```
This command creates a new database with the specified name.
**2. Delete a Database:**
To remove an existing database from the system, the following command is executed:
```
DROP DATABASE dbname;
```
This command permanently deletes the specified database and its associated data.
**3. Create a Table:
**Tables are fundamental structures for organizing data. Here's how to create one:
```
CREATE TABLE Person (
id INT,
name VARCHAR(255),
address VARCHAR(255)
);
```
This command creates a table named "Person" with columns for ID, name, and address.
**4. Delete a Table:**
If a table is no longer needed, it can be deleted using:
```
DROP TABLE tablename;
```
This command removes the specified table from the database schema.
**5. Insert Data into a Table:**
To add records into a table, the following command is employed:
```
INSERT INTO Person (id, name, address)
VALUES (1, 'Tony Stark', 'New York');
```
This command inserts a new record into the "Person" table with the provided values.
**6. Retrieve All Data:**
To fetch all records from a table, the SELECT statement is used:
```
SELECT * FROM Person;
```
This command retrieves all rows and columns from the "Person" table.
**7. Edit Table Data:**
To modify existing data within a table, the UPDATE statement is utilized:
```
UPDATE Person SET name = 'Thor' WHERE id = 1;
```
This command updates the name of the person with ID 1 to 'Thor'.
**8. Delete Table Data:**
To remove specific records from a table, the DELETE statement is employed:
```
DELETE FROM Person WHERE id = 1;
```
This command deletes the record with ID 1 from the "Person" table.
**9. Select Specific Columns:**
Instead of retrieving all columns, you can specify which columns to retrieve using the SELECT statement:
```
SELECT name, address FROM Person;
```
This command retrieves only the 'name' and 'address' columns from the "Person" table.
**10. Filter Data with WHERE Clause:**
You can apply conditions to filter the data using the WHERE clause:
```
SELECT * FROM Person WHERE address = 'New York';
```
This command fetches all records from the "Person" table where the address is 'New York'.
**11. Order Results with ORDER BY:**
You can sort the retrieved data in ascending or descending order using the ORDER BY clause:
```
SELECT * FROM Person ORDER BY name ASC;
```
This command sorts the records in the "Person" table alphabetically by name in ascending order.
**12. Limit the Number of Results:**
To limit the number of records returned, you can use the LIMIT clause:
```
SELECT * FROM Person LIMIT 5;
```
This command restricts the output to the first 5 records from the "Person" table.
**13. Group Data with GROUP BY:**
You can group rows that have the same values into summary rows using the GROUP BY clause:
```
SELECT address, COUNT(*) FROM Person GROUP BY address;
```
This command counts the number of people in each unique address from the "Person" table.
**14. Calculate Aggregate Functions:**
You can perform calculations on sets of values using aggregate functions like COUNT(), SUM(), AVG(), MIN(), MAX():
```
SELECT COUNT(*) FROM Person;
```
This command counts the total number of records in the "Person" table.
**15. Join Tables:**
To combine rows from two or more tables based on a related column between them, you can use the JOIN clause:
```
SELECT * FROM Person INNER JOIN Orders ON Person.id = Orders.person_id;
```
This command retrieves all records from the "Person" table that have matching records in the "Orders" table based on the common 'person_id' column.
**16. Use Aliases for Tables and Columns:**
You can use aliases to provide temporary names for tables and columns:
```
SELECT p.id AS person_id, p.name AS person_name, o.order_id
FROM Person p
JOIN Orders o ON p.id = o.person_id;
```
This command uses aliases 'p' for 'Person' table and 'o' for 'Orders' table, providing clearer and more concise references.
**17. Filter Results with HAVING Clause:**
Similar to WHERE clause but used with GROUP BY for filtering group rows:
```
SELECT address, COUNT(*) as count
FROM Person
GROUP BY address
HAVING count > 1;
```
This command filters addresses having more than one person residing.
**18. Use Subqueries:**
Subqueries allow embedding one query within another query:
```
SELECT name, address
FROM Person
WHERE id IN (SELECT person_id FROM Orders WHERE total_amount > 1000);
```
This command retrieves names and addresses of people who have placed orders with a total amount greater than 1000.
**19. Perform Joins with Different Types:**
Besides INNER JOIN, you can use OUTER JOINs (LEFT JOIN, RIGHT JOIN, FULL JOIN) to include unmatched rows from one or both tables:
```
SELECT p.id, p.name, o.order_id
FROM Person p
LEFT JOIN Orders o ON p.id = o.person_id;
```
This command retrieves all records from the "Person" table and matching records from the "Orders" table, if any.
**20. Use CASE Statements for Conditional Logic:**
CASE statements provide conditional logic within SQL queries:
```
SELECT id, name,
CASE
WHEN address = 'New York' THEN 'East'
WHEN address = 'Los Angeles' THEN 'West'
ELSE 'Other'
END AS region
FROM Person;
```
This command categorizes people based on their address into 'East', 'West', or 'Other' regions.
**21. Perform Aggregate Functions with DISTINCT:**
You can apply aggregate functions on distinct values:
```
SELECT COUNT(DISTINCT address) AS unique_addresses
FROM Person;
```
**22. Utilize Window Functions:**
Window functions perform calculations across a set of rows:
```
SELECT name, address, SUM(total_amount) OVER (PARTITION BY address) AS total_spent
FROM Person
JOIN Orders ON Person.id = Orders.person_id;
```
This command calculates the total amount spent by each person within their respective addresses.
**23. Perform Cross Joins:**
Cross join returns the Cartesian product of the sets of records from the two or more joined tables:
```
SELECT p.name, o.order_id
FROM Person p
CROSS JOIN Orders o;
```
| mahabubr |
1,878,132 | HOW TO HOST AN APPLICATION USING GITHUB | As a beginner I always had the doubt where I can host my application or portfolio freely. With online... | 0 | 2024-06-05T14:46:48 | https://dev.to/shreeprabha_bhat/how-to-host-an-application-using-github-49bh | As a beginner I always had the doubt where I can host my application or portfolio freely. With online platform I found out the one of the easiest way to host an application using Github. Today I am going to write about the steps involved in hosting the application using github.
**STEP 1: CREATE A REPOSITORY**
- Login to your github account
- Create a repository
1. Tap on the "New" option on top right corner
2. Provide Repository name.
3. Give the description if you wish.
4. Make your repository public/private based on your choice.
5. Tap on Create Repository on the bottom right corner.
**STEP 2: UPLOAD YOUR APPLICATION FILES**
- Upload all the files that are involved in your application.
- You can refer "https://dev.to/vidyarathna/getting-started-with-github-3a7d" this article from @vidyarathna to upload your files to the github using git.
**STEP 3: ENABLE GITHUB PAGES**
- Open your repository.
- Go to settings and open "Pages" option.
- Select "main" branch from the dropdown under Branch.
- Once you choose the branch save it.
**STEP 4: ACCESSING THE APPLICATION**
- Once you save you the branch you will see a message on the top.
- Message on the top contains the URL to your application which will be in the format "https://your-username.github.io/my-app".
- You can tap on the "Visit site" on the right side of the URL.
- You can visit your application and perform preferred action using this.
You can also select Custom domains to host your applications. You can check Github's documentation for more details. Github's pages site is more suitable for static websites. It is better to use other hosting solutions for dynamic sites.
| shreeprabha_bhat | |
1,878,131 | Device limit reached for this Apple ID - Solution | During the new device onboarding process, if you have been using the Apple ecosystem for a while and... | 0 | 2024-06-05T14:46:28 | https://monobit.dev/blog/device-limit-reached-for-this-apple-id | apple | During the new device onboarding process, if you have been using the Apple ecosystem for a while and have changed multiple devices over time, you may encounter the Device Limit issue that Apple displays when you try to use your device with Apple Music (and likely other media apps as well) but you have a number of devices already associated with your Apple ID.
Apple's instructions for addressing this issue are outdated. They refer to buttons that no longer exist, likely due to previous operating system versions. Additionally, a solution to this problem does not appear to have been posted online prior to [my comment](https://www.reddit.com/r/iphone/comments/1at4bg1/comment/kzcmolp/) on Reddit. It received significant attention, so I decided to cross-post the solution here to help more people find it.
## MacOS solution
Follow these steps to access the interface that allows you to remove old devices from your media limit count.
1. System settings
2. Apple ID
3. Media & Purchases
4. Account - Manage
5. Hidden Items section - Manage Devices
6. Click "Remove" on each device you no longer use, allowing you to access Apple Music on your new device.
7. Enjoy!
| dmitrysemenov |
1,878,114 | The Best Typesafe ORM you are not using | Since I stumbled across NoSQL databases, specifically document-oriented databases, I knew I had found... | 0 | 2024-06-05T14:45:06 | https://dev.to/kalashin1/the-best-javascript-orm-you-are-not-using-ngb | node, typescript, mongodb, mysql | Since I stumbled across NoSQL databases, specifically document-oriented databases, I knew I had found the one for me. It is not that I find anything wrong about SQL databases but I'm not just that guy. I like to think about my data in terms of Objects. I started using MongoDB around 2020 and since then I've used it on almost all new projects I've started personally and will still do so.
Different ORMs out there support [MongoDB](https://www.mongodb.com/), but I'm going to be talking about TypeORM in today's post. An ORM that works well with both SQL databases and MongoDB. In today's post, we will explore how to get started using TypeORM with MongoDB, and thus we will consider the following talking points.
- What is TypeORM
- Project Setup and Integration with MongoDB
- Why TypeORM
- Should you use it
[TypeORM](https://typeorm.io/) is an Object Relational Mapper hence the (ORM) which is built to run in the browser, on the server aka Node.JS, Expo, and every single execution context that utilizes Javascript. TypeORM has excellent support for [Typescript](https://www.typescriptlang.org/) while allowing newbies to use it with Javascript too. However, if you want to get its game-changing abilities you need to use Typescript.
TypeORM supports multiple databases ranging from SQL databases like MySQL and Postgresql to NoSQL document-oriented databases like MongoDB and [CockroachDB](https://www.cockroachlabs.com/). Being an ORM, TypeORM sits as a layer on top of our applications that allows us to build our applications using Object-oriented programming principles when interacting with our data as opposed to dealing directly with them. columns and rows which is the default for most SQL databases. As developers, we think about data more in terms of Objects than columns, and providing an API that allows us to interact with our data in a manner that we are already attuned to provides unparalleled benefits.
Project Setup
Let's set up a simple project using TypeORM and MongoDB with [Express](https://expressjs.com/). The first thing we'll need to do is to open up a terminal and run the following command,
```bash
npx typeorm init --name projectName--database mongodb
```
This command sets up a basic TypeORM project configured to work with MongoDB however there are still some things we'll need to handle personally. We'll need to provide the link to our MongoDB instance which could be hosted in the cloud or locally. Now we need to navigate into the directory so we can start editing our projects.
```bash
cd projectName
```
Now our folder structure should look like this
```tree
MyProject
├── src
│ ├── entity
│ │ └── User.ts
│ ├── migration
│ ├── data-source.ts
│ └── index.ts
├── .gitignore
├── package.json
├── README.md
└── tsconfig.json
```
We'll first navigate to the `data-source.ts` and we'll make some changes to this file.
```typescript
import { User } from "./entity/User";
export const AppDataSource = new DataSource({
type: "mongodb",
url: process.env.DB_URL, // link to mongodb instance
useUnifiedTopology: true,
useNewUrlParser: true,
synchronize: false,
entities: [
User,
]
})
```
Next, we need to install `Express.JS` so we can create a server.
```bash
npm i express
```
Now you need to open up your `index.ts` folder inside the `src` folder and make the following updates to it.
```typescript
import express from 'express';
import { AppDataSource } from './data-source';
import {User} from './src/entity/user.ts';
import http from 'http';
const PORT = process.env.PORT;
const app = express();
const server = http.createServer(app);
app.get('/', async (req, res) => {
const payload = await AppDataSource
.mongoManger
.find(User, {});
return res.json(payload)
}
app.post('/user', async (req, res) => {
const payload = req.body;
const result = await AppDataSource
.mongoManager
.create(User, payload);
return res.json(payload);
})
AppDataSource.initialize().then(async () => {
console.log('connected to the database')
server.listen(PORT, () => {
console.log(`app running on port ${PORT}`)
})
}).catch(error => console.log(error));
```
## Why TypeORM
Why should you consider using TypeORM, well if you didn't already notice;
- It is very easy to set up and get started creating a project with TypeORM, with just one command we were able to spin up and install the template and dependencies for our project. This is especially useful if you new to TypeORM, the API for interacting with your data is presents itself in a very simple and intuitive way while still being complex enough for you to write just about any query you can think of.
- If you already know TypeORM but you've only used it with MySQL in the past and you are looking at using MongoDB as your new database, you'd feel just at home if you go with TypeORM. There's virtually little to no learning curve when you decide to use MongoDB although might have to write your queries differently. This is so much better than having to learn the APIs for a new ORM due to time factors.
- TypeORM provides the full benefit of working with Typescript but it still accommodates vanilla Javascript excellently to encourage incremental adoption. TypeORM also allows you to utilize the Active Record pattern or the DataMapper pattern when interacting with your data. The list of databases supported by TypeORM is almost endless, from MySQL, PostgreSQL, MongoDB, to CockroachDB.
## Should you use it
Now we know all the nice shiny things about TypeORM, is it something we should even consider using given the short amount of time we have, and if you ask me for my personal opinion then I'd say yes. TypeORM will make your job so much easier, the developer experience is unparalleled. Their documentation is simple and straight to the point. TypeORM also allows you to build your apps faster and it minimizes the overall amount of code you need to write because most things have already been thought about in advance. Ultimately the decision to use TypeORM boils down to you, but all the 10X developers I know use TypeORM so if you wanna build the next project you're not going to finish then absolutely use TypeORM.
What is your take on TypeORM? Would you consider using it for your next project? Do you already use TypeORM? and if yes what is your experience with using TypeORM? I'd love to know all this and more so you can and should leave your thoughts in the comment section below. | kalashin1 |
1,878,130 | Remote power monitoring | The power delivery in Ukraine currently faces challenges due to a power deficit caused by Russian... | 0 | 2024-06-05T14:44:11 | https://monobit.dev/blog/remote-power-monitoring | monitoring | The power delivery in Ukraine currently faces challenges due to a power deficit caused by Russian terrorist attacks on the Ukrainian infrastructure. As the balance between consumption and generation fluctuates, periodic shutdowns occur in different districts based on a semi-accurate schedule.
My apartment is on a high floor, higher than most people are willing to climb by stairs. Typically, during a power outage, you would prefer to spend more time outside. Thus, my family and I need to know when the electricity is on or off, no matter where we are.
# Project Goals
- Receive notifications when power goes online and offline.
- Gain insight into power outage patterns and durations to improve home routines and travel planning.
# Potential Solutions
- Rely on one of the smart devices that already sends notifications when it goes offline.
- Leverage the full capabilities of homelab infrastructure.
I don’t think I need to explain why the latter option is the best one, right?
# Requirements
- One power independent server
- One indicator of the electricity presence
As a power-independent server, I’ll use my existing AWS Lightsail instance, which I maintain for my pet projects. It will handle all management tasks, including checking the home power status, keeping a history, and sending notifications. To check if my home has electricity, I’ll use a network device with a persistent IP address that is always connected to the network. There are countless ways to check if the home is offline, but the method I chose fits well with my secondary goal of trying out the Tailscale subnet router feature.
# Tailscale
Tailscale is an app that creates a flexible and easy-to-use software-defined network on top of the fast and secure WireGuard protocol. I have my own network that I can access from anywhere in the world. This network allows me to connect to any device I’ve joined, with a granular access control list (ACL) that lets me decide which devices can see and access specific resources.
In this project, an additional server acts as a Tailnet subnet router. It connects the device used to detect electricity status to the Tailnet since direct installation on the device is impossible. Although I could use this server instead of the AWS one, I prefer the Lightsail instance due to the Uptime Kuma app already installed there.
# Uptime Kuma
The core of my monitoring system is Uptime Kuma, a self-hosted monitoring tool that supports various monitoring methods such as HTTP(S) requests, ping, gRPC, DNS, and others. To check device connectivity, I’ll use a simple ping through Tailnet. As long as the ping is successful, it indicates the device is connected to the network and powered on. After configuring the ping monitor, I immediately started collecting outage events, addressing one of my initial goals.
# Notifications
To inform my family about the power status, relying solely on the status page is insufficient. Uptime Kuma offers a variety of notification options out of the box. I tested two: webhooks and Telegram. Using webhooks with n8n allowed me to customize texts or payloads sent to users, including AI-powered jokes. However, after trying both, I opted for native Telegram notifications for their reliability, avoiding unnecessary complications. While this means fewer fun messages, it reduces dependencies.
# Future Enhancements
Initially, I considered using the EcoFlow API, which not only indicates power status but also provides data on current backup battery charge. However, they require a business week to review API access requests, which delayed this integration. Once approved, this can be a great addition to the intranet monitoring system in the future.
 | dmitrysemenov |
1,878,127 | Making Spring Transactions Transparent with Detailed Logging | TL;DR While working on my latest video on Transactions, I found a very useful logging... | 0 | 2024-06-05T14:42:39 | https://dev.to/therealdumbprogrammer/making-spring-transactions-transparent-with-detailed-logging-1n69 | java, springboot, spring, programming | **TL;DR**
{% embed https://youtu.be/riNWDhiv3fk %}
While working on my latest video on Transactions, I found a very useful logging configuration. By enable/configuring these log levels, you can gain valuable insights into your application’s transaction flow.
This makes Spring Boot to display detailed information related to Spring/JPA Transactions wherein you can see Transactions being created, joined, committed, and rolled back.
**Configuring log levels**
Here’s a quick look at how you can set up detailed logging in your Spring Boot application:
Add these configurations to your application.yml file
> Note — for application.properties just change the format of keys and corresponding values.
spring:
datasource:
username: root
password: mysql@123!
url: jdbc:mysql://localhost:3306/hibdemo
jpa:
show-sql: true
hibernate:
ddl-auto: create
logging:
level:
org.springframework.orm.jpa.JpaTransactionManager: debug
> Notice the last section where we’re setting the logging level.
This setting will provide detailed logs that include when transactions are created, committed, and rolled back. This makes it easier to follow the flow and understand what’s happening under the hood.
Here’s how it would look like when you run the application:
If you’re interested in a more in-depth explanation, including practical examples and best practices, check out my detailed YouTube video on Spring Transactions. In the video, I cover everything you need to know about managing transactions in Spring Boot, from basic concepts to advanced settings.
I hope this post helps you get a better grasp of Spring transactions and logging. If you have any questions or need further clarification, feel free to leave a comment below or reach out on social media.
Happy coding!
| therealdumbprogrammer |
1,878,126 | Burger king carte prix | La burger king carte prix comprend également une variété d'options à la carte pour ceux qui préfèrent... | 0 | 2024-06-05T14:42:15 | https://dev.to/robyngknapp/burger-king-carte-prix-5443 | La [burger king carte prix](https://prixdesmenus.com/burger-king-menu/) comprend également une variété d'options à la carte pour ceux qui préfèrent personnaliser leur repas. Des sandwichs aux salades, en passant par des accompagnements comme les onion rings et les nuggets de poulet, chaque élément est proposé à un prix transparent. Cela permet aux clients de composer leur propre festin selon leurs envies et leur appétit, tout en maîtrisant leur budget. | robyngknapp | |
1,878,125 | How Is End-To-End Testing Different From Regression Testing? | Every tester aims to increase test coverage and move towards a better end product. A well-planned... | 0 | 2024-06-05T14:41:48 | https://linuxnetmag.com/how-is-end-to-end-testing-different-from-regression-testing/ | testing, webdev, mobile, programming | Every tester aims to increase test coverage and move towards a better end product. A well-planned testing strategy involves different testing types and plans for various connections and combinations. Finding a successful and viable testing strategy for complex systems can be tricky. But other approaches and views have made things a lot easier for QA. The core premise is that what worked before should continue to work as expected. The entire system should also consistently work from the beginning to the end.
With so many different types of testing having similar goals, it’s easy to confuse them. One such example is E2E testing and regression testing. They are so similar in their approach and outcome that there is a common misconception in the testing industry that either these two are the same or one encompasses the other.
Testers often think that since end-to-end testing is sometimes a part of automated regression testing, it is the same as regression testing. But in reality, there are striking differences QA teams need to be clear on when it comes to these particular testing types. In the post, we will take a detailed look at each of them and how they are different from each other.
## What Is End-To-End Testing?
[End-to-end testing](https://www.headspin.io/blog/what-is-end-to-end-testing) is a testing methodology to check whether application flow performs as per design and expectations from the beginning to the end. It helps in identifying and recognizing system dependencies. The process also ensures the correct information between different systems and their components. End-to-end testing usually comes after design and functional testing. It stimulates real-time settings by using the test environments and data.
It’s important to know that end-to-end testing shouldn’t be a one-time activity. And understanding this is crucial for businesses that run both on the cloud and off-cloud since they need close monitoring of integrations. Testers can save extra effort and time by implementing large-scale automation testing. They should focus on test designing and test result analysis instead of spinning their heads to configure environments and tools and maintain existing tests.
## What Is Regression Testing?
Regression testing ensures no adverse impact on existing features after implementing code changes. Testers use a section of test cases they have already executed for re-execution to test whether the current functionalities are working fine.
## Differences Between End-To-End Testing and Regression Testing
Let’s compare where end-to-end and regression testing differ from each other.
- The focus of end-to-end testing is on workflows. Regression testing verifies that new changes haven’t negatively impacted existing functionality.
- End-to-end testing checks integration and subsystem issues to verify business process flow. Regression testing does the same by making sure that new modifications don’t interfere with old code functionality.
- While end-to-end testing requires creation of test cases, regression testing re-executes already existing ones.
- End-to-end tests continuously run through the Software Development Life Cycle, whereas regression tests run only after a release or change in the programming.
- Testers perform end-to-end testing on real devices or simulated environments mimicking customer experience. On the other hand, regression tests belong to the environment before production.
> Read: [How Can End-to-end Testing Help You?](https://dev.to/abhayit2000/how-can-end-to-end-testing-help-you-10jg)
## Benefits of End-to-End Testing
You can easily perform end-to-end tests in the Dev environment since the core target mimics end-user interactions. Since end-to-end testing checks all layers and remote systems starting from the database, front-end, and back-end, it’s a blessing for heterogeneous systems.
## Challenges of End-to-End Testing
Sometimes, testers don’t always get access to the production environment. End-to-end testing is also subject to software updates and other interactions. Creating and running many repetitive and long-lasting tests can be monotonous and laborious. Moreover, maintaining a more oversized test suite requires much effort and time.
## Benefits of Regression Testing
The best thing about performing regression testing is that testers can quickly identify defects in the early phases of the SDLC. These tests help in evaluating the stability of a system through various changes. Therefore, CI/CD pipeline is incomplete without this step. Regression testing reduces and, in some cases, eliminates post-deployment errors. Consequently, it significantly contributes to user satisfaction. It also offers continuity to secure workflows.
## Challenges of Regression Testing
As you add more functionalities and updates to your software, it grows. It is good that it can make [regression testing](https://www.headspin.io/blog/regression-testing-a-complete-guide) challenging as it broadens its scope—the repetitions in a regression testing cycle increase along with the growing test suite. Even though automation helps to a great extent, regression testing becomes overall tedious and time-consuming.
## Conclusion
Every testing type serves a different and distinct purpose. Both end-to-end and regression tests have their own unique set of advantages, hurdles, features, and characteristics. Since software goals can be variable, testing approaches must be unique too. Sometimes developers can take the independent route to create things during the SDLC without knowing what another team member has done.
While the core aim is to improve the app, such changes can cause incompatibilities in some areas. But if you are using a tactful amalgamation of both regression and end-to-end testing, it can lead to a high-quality end product.
Now that you understand the difference between regression and end-to-end testing, you might think about which is more appropriate for your business needs. The ideal way to go is not to choose between the two. Instead, you can make it a part of your testing strategy to decide how much of both approaches you should implement in your STLC.
You can easily make the most out of regression and end-to-end tests if you strike a healthy balance between automation and manual testing. However, you should remember that applying automation whenever necessary is a significant step toward cutting down lead times. Do you have any queries about the subject? Let us know in the comments section below. | jennife05918349 |
1,878,122 | Menú de Caffenio Precios | Consultar el menú de Caffenio precios te permitirá planear tu visita sin sorpresas. Los precios del... | 0 | 2024-06-05T14:34:14 | https://dev.to/robyngknapp/menu-de-caffenio-precios-5am9 | Consultar el [menú de Caffenio precios](https://mxmenu.org/caffenio-menu/) te permitirá planear tu visita sin sorpresas. Los precios del menú de Caffenio son competitivos y reflejan la calidad de sus productos. Ya sea que busques una opción económica o un capricho, el menú de Caffenio precios tiene algo para ti. | robyngknapp | |
1,878,113 | The Right Way to Do HMAC Authentication in ExpressJS | Authentication is the most important thing when building an API. There are many method to... | 0 | 2024-06-05T14:30:36 | https://dev.to/burhanahmeed/the-right-way-to-do-hmac-authentication-in-expressjs-5489 | authjs, typescript, go, programming | Authentication is the most important thing when building an API. There are many method to authenticate to an API. Some provider choose to only _bearer_ token, some choose to use a pair of username and password, and many other way to authenticate an API. Besides those, there is another way to authenticate an API, yes, it is using an hmac comparison.
Usually an API webhook use this kind of authentication.
A webhook will be sent by third party system to invoke an API in our system when a certain action happened. In example, when a payment just done by customers or an order just created, etc. We only need to provide a POST API that will do some processes when there is an invocation. What we need to do is providing an API then usually in the third party system there is a configuration to set the endpoint to hit when an action is triggered.
> **example:** payment just done then send payment status notification to our system via webhook, so we can change the status in our DB.
One of the popular authentication method is using HMAC hash, where third party system will send a hash code in the header and our API will authenticate from the hash code by generating HMAC then compare the HMAC hash code result with the hash code sent by partner.
The idea of this authentication is to make sure that the only party can invoke our webhook API is only the particular partner we have been configured, so not everyone can hit our API.
> **Example** We want only Stripe that can invoke the webhook to send payment status. We dont want some random guy hitting and spamming the webhook using Postman and send random data.
At this point, we should follow the authentication method that is provided by the third party system.
## Generate the Hmac
The most common way to generate a hmac is that the third party system will give us a secret code to generate hmac and then use the request body as encoding string (Buffer is also possible). Usually partner will have a documentation about how they generate the hmac hash and we just need to follow the logic using our prefered programming language.
```golang
func generateHMAC(message string, secretKey string) (string, error) {
key := []byte(secretKey)
h := hmac.New(sha256.New, key)
_, err := h.Write([]byte(message))
if err != nil {
return "", err
}
// Get the HMAC value
signature := h.Sum(nil)
// Encode the signature in hexadecimal format
encodedSignature := hex.EncodeToString(signature)
return encodedSignature, nil
}
```
or in Javascript
```typescript
function generateHmac(
message: string,
secretKey: string,
options?: HmacOptions
): string {
const algorithm = options?.algorithm || 'sha256';
const encoding = options?.encoding || 'hex';
const hmac = crypto.createHmac(algorithm, secretKey);
hmac.update(message);
const signature = hmac.digest(encoding);
return signature;
}
```
Above just a simpel way to generate an HMAC hash.
## How to do it the right way
As the title said, there is nothing wrong about the function to generate HMAC. The problem is in the argument that were sent to the function. I have this use case when using ExpressJS. Are we supposed to send the correct message to `generateHmac()` or not?
Usually we will use this method, pass req.body in the argument. Basically it will work fine until the partner send an encoded character, it will start failing.
```typescript
import express from 'express';
const app: express.Application = express();
// Configure body-parser to handle JSON and URL-encoded data
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
// Define a simple route that responds with a message
app.get('/', (req: express.Request, res: express.Response) => {
const hash = generateHmac(JSON.stringify(req.body), process.env.SECRET_CODE);
if (hash !== req.headers.hash) { // throw an error here }
res.send('Hello from a simple Express.js app!');
});
```
`express.json()` will automatically decode the character into a readable one. Thats why the message argument in our end and in partner end to generate the HMAC would be different.
I give you an example. The partner send the message in the payload `Hi, Tom \u0026 Jerry`, bodyParser will translate it as `Hi, Tom & Jerry` and we will generate HMAC using the translated string, which will generate different HMAC code to partner end.
## Solution
Using raw body will always be the workaround. We can get raw data from `express.json()`, then append it into the request object.
```typescript
app.use(
express.json({
verify(req: express.Request, res, buf, encoding) {
req.rawBuffer = buf;
}
})
);
. . .
. . .
app.get('/', (req: express.Request, res: express.Response) => {
const hash = generateHmac(req.rawBuffer, process.env.SECRET_CODE);
if (hash !== req.headers.hash) { // throw an error here }
res.send('Hello from a simple Express.js app!');
});
```
Make sure `generateHmac()` parameters should accept Buffer too.
By using raw data, we can make sure that the message we use to generate HMAC is same between partner end and our end, there is no data discrepancy.
| burhanahmeed |
1,877,677 | Introducing sudoku-puzzle: Simplify your Sudoku experience with this new NPM Package | Hi there 👋 I'm excited to share the release of sudoku-puzzle, my newest npm package! This package is... | 19,830 | 2024-06-05T14:30:00 | https://dev.to/dhanushnehru/introducing-sudoku-puzzle-simplify-your-sudoku-experience-with-this-new-npm-package-1249 | npm, opensource, showdev, codenewbie | Hi there 👋
I'm excited to share the release of sudoku-puzzle, my newest npm package! This package is for puzzle lovers who wish to produce and solve Sudoku puzzles programmatically, or for developers who want to incorporate Sudoku puzzles into their applications.
## What makes Sudoku so special?
Numerous millions of individuals worldwide have long considered sudoku to be their favourite past time. It's a great mental workout because of how easy yet difficult it is. Developers can also learn a lot about algorithm design, pattern recognition, and even artificial intelligence through sudoku puzzles.
## Presenting the sudoku puzzle
The goal of the sudoku-puzzle package is to serve as a complete toolkit for anything related to Sudoku. It has many features that facilitate the creation, resolution, and validation of Sudoku problems.
{% embed https://github.com/DhanushNehru/sudoku-puzzle %}
_Feel free to support the repository by starring it ⭐️⭐️⭐️⭐️⭐️_
## How to Get Involved
Check out existing issues or create new ones: [Issue Tracker](https://github.com/DhanushNehru/sudoku-puzzle/issues)
Provide feedback or suggestions: Either in the comments below or raise [new issues](https://github.com/DhanushNehru/sudoku-puzzle/issues/new) in the repository
## Contributions & Ideas
Its currently opensource and its open for contributions and ideas to enhance the npm project. Whether you're a developer, programmer, or just a coding enthusiast, your input is invaluable!
## Getting Started
Getting started with sudoku-puzzle is a breeze. First, you need to install the package via npm:
```javascript
npm install sudoku-puzzle
```
You can check more on the npm page part on how to use it
{% embed https://www.npmjs.com/package/sudoku-puzzle %}
_Thanks for reading, please give a like as a sort of encouragement and also share this post in socials to show your extended support._
**Connect** ⬇️
[**Twitter**](https://twitter.com/Dhanush_Nehru) **/** [**Instagram**](https://www.instagram.com/dhanush_nehru/) **/** [**Github**](https://github.com/DhanushNehru/) **/** [**Youtube**](https://www.youtube.com/@dhanushnehru?sub_confirmation=1) **/** [**Newsletter**](https://dhanushn.substack.com/) **/** [**Discord**](https://discord.com/invite/Yn9g6KuWyA) | dhanushnehru |
1,878,112 | Load Balancer | Mikroservis mimarisinde bir Load Balancer (yük dengeleyici), gelen ağ trafiğini birden çok hizmet... | 0 | 2024-06-05T14:29:58 | https://dev.to/mustafacam/load-balancer-1l1d |
Mikroservis mimarisinde bir **Load Balancer** (yük dengeleyici), gelen ağ trafiğini birden çok hizmet örneği arasında dağıtarak sistemin performansını, güvenilirliğini ve ölçeklenebilirliğini artıran bir bileşendir. Mikroservis mimarisinde, her mikroservis bağımsız olarak çalışır ve ölçeklenir. Yük dengeleyici, bu bağımsız mikroservislerin yükünü dengeler ve aşağıdaki avantajları sağlar:
### Mikroservis Mimarisi ve Load Balancer'ın Rolü
1. **Yük Dağıtımı**:
- Gelen istekleri birden çok mikroservis örneği arasında eşit şekilde dağıtarak, her bir örneğin aşırı yüklenmesini önler. Bu, performansın iyileştirilmesine ve hizmetin daha hızlı yanıt vermesine yardımcı olur.
2. **Yüksek Erişilebilirlik ve Hata Toleransı**:
- Yük dengeleyici, herhangi bir mikroservis örneği başarısız olduğunda trafiği otomatik olarak çalışan örneklere yönlendirir. Bu, hizmetlerin kesintisiz olarak devam etmesini sağlar.
3. **Dinamik Ölçeklendirme**:
- Mikroservislerin ihtiyaç duyulduğunda otomatik olarak ölçeklenebilmesini sağlar. Yeni örnekler eklenip çıkarıldığında, yük dengeleyici bu değişiklikleri otomatik olarak algılar ve trafiği buna göre dağıtır.
4. **Otomatik Sağlık Kontrolü**:
- Yük dengeleyiciler, mikroservis örneklerinin sağlığını sürekli olarak izler. Sağlık kontrolü başarısız olan örneklere gelen trafiği durdurarak yalnızca sağlıklı örneklere istek yönlendirir.
5. **Yönetilebilirlik ve İzleme**:
- Yük dengeleyiciler, trafiği izlemek ve yönetmek için çeşitli araçlar ve metrikler sunar. Bu, yöneticilerin sistem performansını izlemesine ve gerektiğinde müdahale etmesine olanak tanır.
### Load Balancer Türleri
1. **Donanım Tabanlı Yük Dengeleyiciler**:
- Fiziksel cihazlar olarak bulunan ve genellikle veri merkezlerinde kullanılan güçlü yük dengeleyicilerdir. Örnek: F5 Big-IP.
2. **Yazılım Tabanlı Yük Dengeleyiciler**:
- Uygulama olarak çalışan ve bulut ortamlarında yaygın olarak kullanılan yazılım çözümleridir. Örnek: Nginx, HAProxy.
3. **Bulut Tabanlı Yük Dengeleyiciler**:
- Bulut sağlayıcıları tarafından sunulan ve bulut hizmetleriyle entegre çalışan yük dengeleyicilerdir. Örnek: AWS Elastic Load Balancer (ELB), Google Cloud Load Balancer, Azure Load Balancer.
### Load Balancer Kullanım Senaryoları
- **API Gateway**: API Gateway'ler, mikroservislerin giriş noktası olarak çalışır ve gelen tüm API isteklerini mikroservis örneklerine yönlendirir. Bu, yük dengelemeyi ve diğer işlevleri (kimlik doğrulama, yetkilendirme, hız sınırlama) sağlar.
- **Service Mesh**: Service Mesh mimarisinde, yük dengeleme işlevleri genellikle sidecar proxy'ler tarafından sağlanır. Örnek: Istio, Linkerd.
- **Kubernetes**: Kubernetes, kendi yerleşik yük dengeleme yeteneklerine sahiptir ve hizmetlerin istekleri dengelemek için `Service` kaynaklarını kullanır.
### Örnek: AWS Elastic Load Balancer (ELB) ile Mikroservis Yük Dengeleme
AWS üzerinde bir mikroservis mimarisi kurduğunuzu varsayalım. Her mikroservis, Amazon EC2 örneklerinde çalışıyor ve Auto Scaling kullanarak otomatik olarak ölçekleniyor. AWS ELB, gelen trafiği bu EC2 örnekleri arasında dağıtarak hizmetlerin yük dengelemesini sağlar.
**Kurulum Adımları:**
1. AWS Management Console'dan bir ELB oluşturun.
2. Hangi EC2 örneklerinin ELB'ye dahil edileceğini belirleyin.
3. ELB'nin sağlık kontrollerini yapılandırın (örneğin, belirli bir URL'yi periyodik olarak kontrol edin).
4. ELB'yi mikroservislerin giriş noktası olarak yapılandırın.
Bu şekilde, kullanıcı istekleri ELB tarafından karşılanır ve trafiğin tüm mikroservis örneklerine dengeli bir şekilde dağıtılması sağlanır.
### Sonuç
Mikroservis mimarisinde yük dengeleyici, sistemin ölçeklenebilirliğini, performansını ve güvenilirliğini artırmak için kritik bir bileşendir. Gelen trafiği etkili bir şekilde yöneterek, mikroservislerin sorunsuz ve verimli bir şekilde çalışmasını sağlar. Yük dengeleyiciler, çeşitli türlerde bulunabilir ve ihtiyaca göre seçilmelidir. | mustafacam | |
1,878,111 | Introduction ExpressJS | Introduction ExpressJs is a popular open-source web application framework for Node.js... | 0 | 2024-06-05T14:28:57 | https://dev.to/dana-fullstack-dev/introduction-expressjs-59bi | webdev, database |
## Introduction
[ExpressJs](https://expressjs.com) is a popular open-source web application framework for Node.js that is widely used to build web applications and APIs. It is known for its simplicity, flexibility, and performance, making it a popular choice for developers who need a lightweight and scalable framework for their projects.
ExpressJs is designed to be minimal and unopinionated, allowing developers to build applications in their own way without imposing strict conventions or rules. It provides a set of essential features and middleware that help developers create robust and secure applications, while also allowing them to extend and customize the framework to meet their specific needs.
In this guide, we'll explore the key features and benefits of ExpressJs, as well as how to install, configure, and use ExpressJs in your own projects. Whether you're a beginner looking to learn the basics of ExpressJs or an experienced developer looking to build high-performance web applications, this guide has you covered.
## Key Features of ExpressJs
ExpressJs offers a wide range of features and capabilities that make it a powerful and versatile web application framework. Some of the key features of ExpressJs include:
- **Routing**: ExpressJs provides a simple and flexible routing system that allows developers to define routes for handling HTTP requests. It supports various HTTP methods (GET, POST, PUT, DELETE) and URL patterns, making it easy to create RESTful APIs and web applications.
- **Middleware**: ExpressJs uses middleware functions to process incoming requests, perform tasks, and generate responses. Developers can use built-in middleware or create custom middleware to add functionality like logging, authentication, error handling, and more.
- **Template Engines**: ExpressJs supports popular template engines like EJS, Pug, and Handlebars, allowing developers to generate dynamic HTML content and render views on the server. Template engines make it easy to create reusable layouts, partials, and components for web applications.
- **Error Handling**: ExpressJs provides built-in error handling mechanisms that help developers catch and handle errors in their applications. It supports error middleware, error objects, and error-handling functions to manage exceptions and prevent crashes in production.
- **Security**: ExpressJs includes security features like CSRF protection, HTTP headers, and secure cookies to protect web applications from common security vulnerabilities. Developers can use middleware like Helmet and Express-validator to enhance security and prevent attacks.
- **Performance**: ExpressJs is designed for performance and scalability, with features like clustering, caching, and asynchronous processing to handle high traffic and concurrent requests. It can be used with Node.js clusters and load balancers to scale applications horizontally.
## Benefits of Using ExpressJs
There are several benefits to using ExpressJs as your web application framework, including:
- **Simplicity**: ExpressJs is easy to learn, use, and extend, with a minimalistic and unopinionated design that allows developers to build applications in their own way. It provides a lightweight and flexible framework for creating web applications without unnecessary complexity.
- **Flexibility**: ExpressJs is highly flexible and extensible, with support for middleware, plugins, and third-party modules that enhance its functionality. Developers can customize and extend the framework to meet the specific requirements of their projects, without being limited by strict conventions.
- **Performance**: ExpressJs is optimized for performance and speed, with features like clustering, caching, and asynchronous processing that help applications handle high traffic and concurrent requests. It leverages the non-blocking I/O model of Node.js to deliver fast and responsive web applications.
- **Community Support**: ExpressJs has a large and active community of developers, users, and contributors who provide support, documentation, and resources. You can find tutorials, forums, and user groups to help you get started with ExpressJs and troubleshoot any issues you encounter.
- **Scalability**: ExpressJs is designed to be scalable, with features like clustering, load balancing, and asynchronous processing that allow applications to scale horizontally. It can be used to build high-performance web applications that handle large volumes of traffic and users.
## Running Your First ExpressJs Application
To get started with ExpressJs, let's create a simple web application that displays a "Hello, World!" message on the homepage. Follow these steps to set up your project:
1. Install Node.js and npm on your machine if you haven't already.
2. Create a new directory for your project and navigate to it in the terminal.
3. Run `npm init -y` to initialize a new Node.js project with default settings.
4. Install ExpressJs by running `npm install express`.
5. Create a new file named `app.js` and add the following code:
```javascript
const express = require('express');
const app = express();
app.get('/', (req, res) => {
res.send('Hello, World!');
});
app.listen(3000, () => {
console.log('Server is running on http://localhost:3000');
});
```
6. Run `node app.js` in the terminal to start the ExpressJs server.
7. Open your web browser and navigate to `http://localhost:3000` to see the "Hello, World!" message.
## Connecting with a Database
ExpressJs can be used with various databases like Mysql, MongoDB, PostgreSQL, and SQLite to store and retrieve data in web applications. To connect your ExpressJs application with a database, you can use database drivers, ORMs (Object-Relational Mappers), and connection pools that are compatible with Node.js [online database design](https://dynobird.com).
For example, to connect your ExpressJs application with a Mysql database, you can use the `mysql` driver to establish a connection, execute queries, and handle results. Here's an example of how to connect ExpressJs with a Mysql database:
1. Install the `mysql` driver by running `npm install mysql`.
2. Create a new file named `db.js` and add the following code:
```javascript
const mysql = require('mysql');
const connection = mysql.createConnection({
host: 'localhost',
user: 'root',
password: 'password',
database: 'mydatabase'
});
connection.connect((err) => {
if (err) {
console.error('Error connecting to Mysql database:', err);
return;
}
console.log('Connected to Mysql database');
});
module.exports = connection;
```
3. Update your `app.js` file to use the Mysql connection:
```javascript
const express = require('express');
const app = express();
const db = require('./db');
app.get('/', (req, res) => {
db.query('SELECT * FROM users', (err, results) => {
if (err) {
console.error('Error executing Mysql query:', err);
res.status(500).send('Internal Server Error');
return;
}
res.json(results);
});
});
app.listen(3000, () => {
console.log('Server is running on http://localhost:3000');
});
```
4. Run `node app.js` in the terminal to start the ExpressJs server and connect to the Mysql database.
By following these steps, you can connect your ExpressJs application with a Mysql database and perform CRUD operations to store and retrieve data in your web application.
For more advanced database operations and ORM integrations, you can explore popular Node.js libraries like Sequelize, TypeORM, and Knex.js that provide additional features and abstractions for working with databases in ExpressJs applications.
Database design is a critical aspect of software development, you can use [online database design](https://dynobird.com) tools like Dynobird to streamline your database collaboration process. By implementing a collaborative database design workflow, you can improve productivity, reduce errors, and deliver high-quality applications faster.
## Conclusion
ExpressJs is a powerful and versatile web application framework that offers simplicity, flexibility, and performance for developers. Whether you're building a simple web application or a complex API, ExpressJs has the features and capabilities you need to create robust and scalable applications.
In this guide, we've explored the key features and benefits of ExpressJs, as well as how to install, configure, and use ExpressJs in your own projects. By leveraging the power of ExpressJs, you can build high-performance web applications that meet the needs of your users and stakeholders.
If you're new to ExpressJs, we recommend starting with the official ExpressJs documentation and tutorials to learn more about the framework and its capabilities. With the right tools and resources, you can master ExpressJs and take your web development skills to the next level. Happy coding!
| dana-fullstack-dev |
1,878,110 | The beauty of simplicity | image credit: nintendo.com Im watching the TV series “Halt and Catch Fire”📺, and there is an episode... | 0 | 2024-06-05T14:28:16 | https://dev.to/jwtiller_c47bdfa134adf302/the-beauty-of-simplicity-2p9a | gamedev, programming | _image credit: nintendo.com_
Im watching the TV series “Halt and Catch Fire”📺, and there is an episode featuring the classic Nintendo game Duck hunt🦆🎮, that caught my interest. This was a game I played in my childhood, and I asked myself how I would make the game today from a technical point of view. It probably would involve camera, computer vision and machine learning to determine if you aimed on a target with the gun. However, there were some constraints back then, so I searched online how they did it:
When you press the trigger of the gun, the game screen briefly goes black. Then, each target is displayed as a white box against this black background, one after the other, for just a split second. The gun has a light sensor, and if this sensor detects the bright light from one of these white boxes when it is displayed, the game registers it as a hit.
Sometimes the best way is to keep things simple and effective, even if im surrounded by complicated technology. | jwtiller_c47bdfa134adf302 |
1,878,109 | Tell me i m right or wrong | <!-- <!DOCTYPE html> <html> <body> <input id="male"... | 0 | 2024-06-05T14:25:18 | https://dev.to/sagar_soni_abb4bd146ee8a0/tell-me-i-m-right-or-wrong-5bh6 | javascript, webdev, beginners, programming | <!-- Radio Button Fetch And Display Input-->
<!-- <!DOCTYPE html>
<html>
<body>
<input id="male" type="radio" value="Male" name="gender"> Male
<input id="female" type="radio" value="Female" name="gender"> Female
<button onclick="radio()">Click Me</button>
<script>
function radio() {
// Using querySelector to find the checked radio button and get its value
let selectedGender = document.querySelector('input[name="gender"]:checked').value;
alert("You Selected " + selectedGender);
}
</script>
</body>
</html> -->
1) Does in this code the querySelector will check input like radio or text or date anything now are radio than code will see name and after checked will check the checked radio and display with the help of alert I m right
| sagar_soni_abb4bd146ee8a0 |
1,878,108 | Tell me i m right or wrong | <!-- <!DOCTYPE html> <html> <body> <input id="male"... | 0 | 2024-06-05T14:25:15 | https://dev.to/sagar_soni_abb4bd146ee8a0/tell-me-i-m-right-or-wrong-46d6 | javascript, webdev, beginners, programming | <!-- Radio Button Fetch And Display Input-->
<!-- <!DOCTYPE html>
<html>
<body>
<input id="male" type="radio" value="Male" name="gender"> Male
<input id="female" type="radio" value="Female" name="gender"> Female
<button onclick="radio()">Click Me</button>
<script>
function radio() {
// Using querySelector to find the checked radio button and get its value
let selectedGender = document.querySelector('input[name="gender"]:checked').value;
alert("You Selected " + selectedGender);
}
</script>
</body>
</html> -->
1) Does in this code the querySelector will check input like radio or text or date anything now are radio than code will see name and after checked will check the checked radio and display with the help of alert I m right
| sagar_soni_abb4bd146ee8a0 |
1,878,100 | How I Developed a Recipe Selector App Using Python and Tkinter | As an enthusiast of both programming and cooking, I've always wanted to merge my passions into a... | 0 | 2024-06-05T14:23:43 | https://dev.to/codecounsel/how-i-developed-a-recipe-selector-app-using-python-and-tkinter-ddj | beginners | As an enthusiast of both programming and cooking, I've always wanted to merge my passions into a single project. That’s why I decided to develop a recipe selector app that not only helps me organize my favorite recipes but also gave me a chance to dive into the world of GUI development with Python. This post outlines my journey in creating this initial application and explores the broad possibilities for future improvements and expansions.
The "Recipe Selector" app allows users to choose recipes based on the time of day: breakfast, lunch, snack, or dinner. Using a graphical interface developed with Tkinter, the program offers an interactive user experience, enabling easy navigation through options and viewing details for each selected recipe.
To bring this project to life, I used Python for its flexibility and the wealth of supporting libraries. The graphical interface was crafted with Tkinter, a standard Python library that allows for relatively straightforward and effective user interface construction.
During development, I faced several challenges, particularly in integrating the backend logic with the graphical interface seamlessly. One of the biggest hurdles was ensuring that the interface responded appropriately to user interactions. I resolved this by structuring the code so that each GUI component was responsible for a specific function, facilitating maintenance and future updates.
This project was an excellent opportunity to deepen my understanding of Python and explore GUI development with Tkinter in detail. I learned about the importance of interface design in user experience and how thoughtful design can facilitate app usability.
The "Recipe Selector" is in its initial phase, and there is a vast field of improvements that can be implemented, such as:
1. Adding functionality to adjust recipes based on the number of servings.
2. Incorporating a feature to save favorite recipes.
3. Enhancing the interface aesthetics with custom themes and icons.
4. Integrating a more robust database to increase the number of recipes available.
I invite everyone to explore the code on my GitHub repository (https://github.com/codecounsel/recipe-selector) and contribute suggestions for improvements or new features. Your feedback is crucial in helping this project grow and improve!
Developing the "Recipe Selector" was an incredibly enriching journey that united two of my great passions: programming and cooking. I am excited to continue working on this project, expanding its capabilities, and refining its interface. I look forward to any feedback that can help take this project to the next level!
Note: The language used in the code examples is Portuguese because I'm Brazilian, and I'm currently the only one using it, lol! I hope this adds a little local flavor to the programming recipes I share! | codecounsel |
1,878,099 | Semak Rekod Jenayah Melalui Kad Pengenalan Ketahui Keadaan Keselamatan Anda dengan Mudah | Semak rekod jenayah mungkin menjadi salah satu langkah penting dalam memastikan keselamatan diri dan... | 0 | 2024-06-05T14:12:36 | https://dev.to/harga_emasmy_1f89f8f5e12/semak-rekod-jenayah-melalui-kad-pengenalan-ketahui-keadaan-keselamatan-anda-dengan-mudah-31e3 | Semak rekod jenayah mungkin menjadi salah satu langkah penting dalam memastikan keselamatan diri dan keluarga. Dalam era digital yang semakin canggih seperti sekarang, pelbagai platform telah dibangunkan untuk memudahkan orang ramai semak rekod jenayah mereka.
Salah satu cara yang semakin popular adalah melalui penggunaan kad pengenalan. Dengan hanya menggunakan nombor kad pengenalan seseorang, anda boleh mendapatkan akses kepada maklumat keselamatan mereka dengan mudah dan cepat.
Kelebihan **[Semak Rekod Jenayah Melalui Kad Pengenalan](https://www.hargaemasmy.com/semak-rekod-jenayah-melalui-kad-pengenalan)**
Mudah dan Cepat: Proses semakan rekod jenayah melalui kad pengenalan adalah pantas dan mudah. Anda hanya perlu memasukkan nombor kad pengenalan individu yang ingin disemak, dan dalam beberapa ketikan, maklumat keselamatan mereka akan dipaparkan.
Aksesibiliti: Dengan kemajuan teknologi, platform-platform untuk semakan rekod jenayah melalui kad pengenalan boleh diakses dari mana-mana sahaja, selagi terdapat sambungan internet. Ini membolehkan individu mengakses maklumat keselamatan mereka pada bila-bila masa dan di mana sahaja.
Privasi Terjamin: Meskipun proses semakan rekod jenayah melibatkan penggunaan nombor kad pengenalan, privasi individu dijamin. Data peribadi hanya digunakan untuk tujuan semakan keselamatan dan tidak disalahgunakan untuk tujuan lain.
Bagaimana Untuk Semak Rekod Jenayah Melalui Kad Pengenalan
Semak rekod jenayah melalui kad pengenalan adalah proses yang mudah. Anda boleh melakukannya melalui pelbagai platform dalam talian yang disediakan oleh agensi-agensi penguatkuasa undang-undang atau pihak berkuasa keselamatan.
Untuk memulakan proses semakan, anda hanya perlu mengakses laman web atau aplikasi yang menyediakan perkhidmatan tersebut. Kemudian, ikuti arahan yang diberikan untuk memasukkan nombor kad pengenalan individu yang ingin anda semak. Dalam beberapa ketikan, maklumat keselamatan mereka akan dipaparkan.
Peringatan Penting
Walaupun semakan rekod jenayah melalui kad pengenalan adalah berguna, adalah penting untuk menggunakan maklumat yang diperoleh dengan bijak. Janganlah menyalahgunakan maklumat tersebut untuk tujuan yang tidak bertanggungjawab atau melanggar undang-undang privasi.
Link Berguna
Untuk maklumat lebih lanjut mengenai semakan rekod jenayah melalui kad pengenalan dan kegunaannya, anda boleh mengunjungi laman web **[Harga Jual Emas](https://www.hargaemasmy.com)**. Mereka menyediakan maklumat yang berguna mengenai pelbagai isu keselamatan dan kemasyarakatan, termasuk teknik-teknik untuk menjaga keselamatan diri dan keluarga.
Dengan keselamatan sebagai keutamaan, semak rekod jenayah anda melalui kad pengenalan hari ini juga! Langkah kecil ini mungkin boleh menjimatkan anda dari banyak masalah di masa depan. | harga_emasmy_1f89f8f5e12 | |
1,878,107 | Hello Friends! | ** Hello coders, developers, and all amazing people! ** First of all, I am a marketer... | 0 | 2024-06-05T14:20:42 | https://dev.to/whereisity/hello-friends-51n | webdev, beginners, productivity, hello | **
## Hello coders, developers, and all amazing people!
**
- First of all, I am a marketer (please don't kick me out, yet) and not a coder by profession or by birth :)
- I recently started working on my WordPress website and it is FUN and HARD! I know I should hire someone but my job doesn't pay me that much yet :(
- So now that I know how hard you folks work, RESPECT 🫡
I am here to ask questions. I am here to learn. And as I go on this development adventure, I am here to just have a conversation.
All tips, and hacks (except about asking me to quit) are welcome.
| whereisity |
1,879,601 | Mermaid preview using xwidget browser | Mermaid.js is a great tool to make diagrams in plain text, I use it a lot and I wanted to have a way... | 0 | 2024-06-07T06:38:45 | https://erick.navarro.io/blog/mermaid-preview-using-xwidget-browser/ | emacs, mermaidjs | ---
title: Mermaid preview using xwidget browser
published: true
date: 2024-06-05 14:19:05 UTC
tags: emacs,mermaidjs
canonical_url: https://erick.navarro.io/blog/mermaid-preview-using-xwidget-browser/
---
[Mermaid.js](https://mermaid.js.org) is a great tool to make diagrams in plain text, I use it a lot and I wanted to have a way to see previews of the code I was writing.
There are some options to do that but they require to have a [mermaid-cli](https://github.com/mermaid-js/mermaid-cli) installed, which requires `nodejs` as well.
Emacs has a built-in webkit browser, in case it was compiled with `--with-xwidgets` flag, and mermaid run on js so it should be possible to just run the code I want in the browser and see it there.
This function makes the magic, it just take a region previously selected, which have the mermaid code, create a temp file and write some `HTML` there(including our mermaid code).
```emacs-lisp
(defun my/preview-mermaid ()
"Render region inside a webit embebed browser."
(interactive)
(unless (region-active-p)
(user-error "Select a region first"))
(let* ((path (concat (make-temp-file (temporary-file-directory)) ".html"))
(mermaid-code (buffer-substring-no-properties (region-beginning) (region-end))))
(save-excursion
(with-temp-buffer
(insert "<body>
<pre class=\"mermaid\">")
(insert mermaid-code)
;; js script copied from mermaid documentation
(insert "</pre>
<script type=\"module\">
import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid@10/dist/mermaid.esm.min.mjs';
mermaid.initialize({ startOnLoad: true });
</script>
</body>")
(write-file path)))
(xwidget-webkit-browse-url (format "file://%s" path))))
```
# Demo
| erickgnavar |
1,878,102 | Back to the basic - Have you mastered all the Google search techniques? | Improve search, the skill you use everyday by reviewing advanced search techniques in below link (and... | 0 | 2024-06-05T14:18:34 | https://dev.to/patfinder/back-to-the-basic-have-you-master-all-the-google-search-techniques-4mje | Improve search, the skill you use everyday by reviewing advanced search techniques in below link (and of course, many other guides on the Internet):
https://www.pcmag.com/how-to/google-search-tips-youll-want-to-learn
| patfinder | |
1,875,565 | Using Rust and Axum to build a JWT authentication API | Written by Eze Sunday✏️ Building a non-trivial web application with Rust can be fairly... | 0 | 2024-06-05T14:16:51 | https://blog.logrocket.com/using-rust-axum-build-jwt-authentication-api | rust, jwt, webdev | **Written by [Eze Sunday](https://blog.logrocket.com/author/ezesunday/)✏️**
Building a non-trivial web application with Rust can be fairly straightforward. However, when things become complex and require features like authentication, middleware, and more, that’s where Axum shines. Axum makes it a lot easier to build complex web API authentication systems. In this step-by-step guide, we'll build a JWT authentication API using [Rust and the Axum framework](https://blog.logrocket.com/rust-axum-error-handling/). We'll cover everything from building the authentication endpoints to JWT middleware and protected routes.
Let’s jump right in.
## Setting up our Rust and Axum project
Let’s start by installing Rust, Axum, and all the necessary dependencies. Run the following commands to install Rust if you don’t already have Rust installed:
```shell
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
```
The above command requires internet to do. It’ll download and set up Rust and all the tools needed for Rust development, except for your [code editor](https://blog.logrocket.com/how-to-debug-rust-vs-code/) 🙂
Next, run the command below to create a new Rust project and install all the dependencies necessary for this project:
```rust
cargo new rust-auth && cd rust-auth && cargo add tokio --features full && cargo add serde@1.0.195 --features derive && cargo add chrono@0.4.34 --features serde && cargo add axum@0.7.5 jsonwebtoken@9.3.0 bcrypt@0.15.1 serde_json@1.0.95
```
The result should generate a directory like this:
```shell
.
├── Cargo.lock
├── Cargo.toml
└── src
└── main.rs
```
And the `Cargo.toml` file should look like this:
```toml
[package]
name = "rust-auth"
version = "0.1.0"
edition = "2021"
[dependencies]
axum = "0.7.5"
bcrypt = "0.15.1"
chrono = { version = "0.4.34", features = ["serde"] }
jsonwebtoken = "9.3.0"
serde = { version = "1.0.195", features = ["derive"] }
serde_json = "1.0.95"
tokio = { version = "1.37.0", features = ["full"] }
```
Here is a quick rundown of the dependencies we added and why we added each one:
* **Axum**: This is the core Axum Web framework we’ll use for this project
* **Tokio**: We’ll use the Rust Tokio runtime to write asynchronous functions
* **Serde**: We’ll use Serde for our serialization and deserialization needs
* **Chrono**: We’ll also need the date and time library for different things in our application. Specifically, we’ll use it to generate our API token expiry time
* **JSON Web Token (jsonwebtoken)**: The jsonwebtoken library will help us generate and verify JSON Web Tokens
* **BCrypt**: Since we’ll be integrating password hashing, we’ll use BCrypt password hashing function for that
* **Serde JSON**: We'll eventually need to return the API response to the client via a REST API. So, we'll use the Serde JSON library to convert from other data structures to JSON and return the response
Now that we have our setup completed, let’s create the relevant endpoints for our project.
## Authentication endpoints using Axum middleware
We’ll have a route for the user to login, as well as a protected route to demonstrate how to protect our endpoints using the Axum middleware system.
### Tokio and Axum server setup
Before we proceed with that, let’s create the web server with Tokio and Axum in the `main.rs` file. First off, here’s the basic server anatomy:  For our specific project, copy the code below and replace your existing code in the `main.rs` file with it:
```rust
use axum;
use tokio::net::TcpListener;
mod routes;
#[tokio::main]
async fn main() {
let listener = TcpListener::bind("127.0.0.1:8080")
.await
.expect("Unable to connect to the server");
let app = routes::app().await;
axum::serve(listener, app)
.await
.expect("Error serving application");
println!("Listening on {}", listener.local_addr().unwrap() );
}
```
The above code uses Tokio’s TCP listener bound to the address `127.0.0.1:8080` and then uses Axum to serve the web app. It also imports the routes definition which is where will set our focus now.
### Authentication routes
Let’s define the different routes we’ll use for our authentication. Basically, the flow will enable the user to:
* Sign in and receive a token (the `/signin` route)
* Use the token to access protected endpoints (the `/protected/` route)
In that case, we’ll have two endpoints — let’s create them! Create a `routes.rs` file in the `src/` directory and add the following code in it:
```rust
use axum::{
middleware,
routing::{get, post},
Router,
};
use crate::{auth, services};
pub async fn app() -> Router {
Router::new()
.route("/signin", post(auth::sign_in))
.route(
"/protected/",
get(services::hello).layer(middleware::from_fn(auth::authorize)),
)
}
```
The code above contains the two routes definition with their handlers. Notice that there is a middleware in the `/protected` endpoint (auth::authorize) — we’ll take a look at that in a minute.
We’ve imported the `auth` and `hello` services — that’s were we’ll implement the handlers. Let’s create them:
## Authentication handlers
Create a `services.rs` file and add the code below to create the `hello` handler:
```rust
use crate::auth::CurrentUser;
#[derive(Serialize, Deserialize)]
struct UserResponse {
email: String,
first_name: String,
last_name: String
}
pub async fn hello(Extension(currentUser): Extension<CurrentUser>) -> impl IntoResponse {
Json(UserResponse {
email: currentUser.email,
first_name: currentUser.first_name,
last_name: currentUser.last_name
})
}
```
The `hello` handler returns the logged in user’s profile information. When we call the protected route with the user JWT token, the server will return the user information like so:  The next service is `auth`. This service contains all the implementations for our JWT authentication. This is where you’ll need to pay closer attention 😁
Create the `auth.rs` file in the `src/` directory. Then, add the code to sign a user in with their username and password as shown below:
```rust
use axum::{
body::Body,
response::IntoResponse,
extract::{Request, Json},
http,
http::{Response, StatusCode},
middleware::Next,
};
use bcrypt::{hash, verify, DEFAULT_COST};
use chrono::{Duration, Utc};
use jsonwebtoken::{decode, encode, DecodingKey, EncodingKey, Header, TokenData, Validation};
use serde::{Deserialize, Serialize};
use serde_json::json;
#[derive(Serialize, Deserialize)]
// Define a structure for holding claims data used in JWT tokens
pub struct Claims {
pub exp: usize, // Expiry time of the token
pub iat: usize, // Issued at time of the token
pub email: String, // Email associated with the token
}
// Define a structure for holding sign-in data
#[derive(Deserialize)]
pub struct SignInData {
pub email: String, // Email entered during sign-in
pub password: String, // Password entered during sign-in
}
// Function to handle sign-in requests
pub async fn sign_in(
Json(user_data): Json<SignInData>, // JSON payload containing sign-in data
) -> Result<Json<String>, StatusCode> { // Return type is a JSON-wrapped string or an HTTP status code
// Attempt to retrieve user information based on the provided email
let user = match retrieve_user_by_email(&user_data.email) {
Some(user) => user, // User found, proceed with authentication
None => return Err(StatusCode::UNAUTHORIZED), // User not found, return unauthorized status
};
// Verify the password provided against the stored hash
if !verify_password(&user_data.password, &user.password_hash)
.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)? // Handle bcrypt errors
{
return Err(StatusCode::UNAUTHORIZED); // Password verification failed, return unauthorized status
}
// Generate a JWT token for the authenticated user
let token = encode_jwt(user.email)
.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?; // Handle JWT encoding errors
// Return the token as a JSON-wrapped string
Ok(Json(token))
}
#[derive(Clone)]
pub struct CurrentUser {
pub email: String,
pub first_name: String,
pub last_name: String,
pub password_hash: String
}
// Function to simulate retrieving user data from a database based on email
fn retrieve_user_by_email(email: &str) -> Option<CurrentUser> {
// For demonstration purposes, a hardcoded user is returned based on the provided email
let current_user: CurrentUser = CurrentUser {
email: "myemail@gmail.com".to_string(),
first_name: "Eze".to_string(),
last_name: "Sunday".to_string(),
password_hash: "$2b$12$Gwf0uvxH3L7JLfo0CC/NCOoijK2vQ/wbgP.LeNup8vj6gg31IiFkm".to_string()
};
Some(current_user) // Return the hardcoded user
}
```
Although the code is a bit long, it is heavily commented to make it easy to understand and follow along. Now, we are going to explain every part of it.
First, we created the `Claims` and `SignInData` data struct.
The `Claims` is what we expect to be encoded in the JWT token. We want the expiry, issue date/time, and email to be in `Claims`. We expect the user to send their email address and password in exchange for the JWT token:
```rust
// Define a structure for holding claims data used in JWT tokens
pub struct Claims {
pub exp: usize, // Expiry time of the token
pub iat: usize, // Issued at time of the token
pub email: String, // Email associated with the token
}
```
The `SignInData` struct represents that data, as shown below in this extracted code from the previous code:
```rust
// Define a structure for holding sign-in data
#[derive(Deserialize)]
pub struct SignInData {
pub email: String, // Email entered during sign-in
pub password: String, // Password entered during sign-in
}
```
Next, we get into the sign-in function. The sign-in function accepts a JSON object as the request body and returns a JSON or StatusCode as shown below:
```rust
// Function to handle sign-in requests
pub async fn sign_in(
Json(user_data): Json<SignInData>, // JSON payload containing sign-in data
) -> Result<Json<String>, StatusCode> {
```
In the sign-in function, we attempt to get the users information from the database based on their email address they provided. If it does not exist, we don’t proceed with the login.
If it does exist, we want to verify the password the user sent with the hashed password in the database. For simplicity, we simulated the database user retrieval with the `retrieve_user_by_email` function below:
```rust
// Function to simulate retrieving user data from a database based on email
fn retrieve_user_by_email(email: &str) -> Option<CurrentUser> {
// For demonstration purposes, a hardcoded user is returned based on the provided email
let current_user: CurrentUser = CurrentUser {
email: "myemail@gmail.com".to_string(),
first_name: "Eze".to_string(),
last_name: "Sunday".to_string(),
password_hash: "$2b$12$Gwf0uvxH3L7JLfo0CC/NCOoijK2vQ/wbgP.LeNup8vj6gg31IiFkm".to_string() // the plain password hashed to this is "okon" without the quotes.
};
Some(current_user) // Return the hardcoded user
}
```
We used bcrypt password hashing to generate the password for this example. The password in the above example is `okon`. Also, below are the functions for hashing and verifying a password. Add them to the `auth.rs` file:
```rust
pub fn verify_password(password: &str, hash: &str) -> Result<bool, bcrypt::BcryptError> {
verify(password, hash)
}
pub fn hash_password(password: &str) -> Result<String, bcrypt::BcryptError> {
let hash = hash(password, DEFAULT_COST)?;
Ok(hash)
}
```
Finally, we generate the JWT token and encode the user’s email into it:
```rust
let token = encode_jwt(user.email)
.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)?; // Handle JWT encoding errors
```
But the `encode_jwt` function isn’t created yet, so we need to create it. Add the `encode_jwt` function to the `auth.rs` file:
```rust
pub fn encode_jwt(email: String) -> Result<String, StatusCode> {
let secret: String = "randomStringTypicallyFromEnv".to_string();
let now = Utc::now();
let expire: chrono::TimeDelta = Duration::hours(24);
let exp: usize = (now + expire).timestamp() as usize;
let iat: usize = now.timestamp() as usize;
let claim = Cliams { iat, exp, email };
encode(
&Header::default(),
&claim,
&EncodingKey::from_secret(secret.as_ref()),
)
.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR)
}
```
This function above uses the `jwt` library to generate a valid login authentication token. The function accepts email addresses and you can add other information into the `jwt` encoding as you need.
We’ll also need to decode the JWT when we start working on the the middleware, so, let’s create the `decode_jwt` function. Include the `decode_jwt` code below in the `auth.rs` file:
```rust
pub fn decode_jwt(jwt_token: String) -> Result<TokenData<Cliams>, StatusCode> {
let secret = "randomStringTypicallyFromEnv".to_string();
let result: Result<TokenData<Cliams>, StatusCode> = decode(
&jwt_token,
&DecodingKey::from_secret(secret.as_ref()),
&Validation::default(),
)
.map_err(|_| StatusCode::INTERNAL_SERVER_ERROR);
result
}
```
Make sure the `DecodingKey` algorithm matches for both the encoding and decoding functions. The default algorithm is HS256; if you choose to use the default, you should also use the same secret for both the `encode_jwt` and `decode_jwt` functions. You can also use the RSA encryption algorithm if you need to. Here is an example of how you’d use the RSA encryption algorithm for the encoding:
```rust
let result = encode(&Header::new(Algorithm::RS256), &my_claims, &EncodingKey::from_rsa_pem(include_bytes!("privkey.pem"))?)?;
```
Here is decoding with the RSA encryption algorithm:
```rust
let result = decode::<Claims>(&jwt_token, &DecodingKey::from_rsa_components(jwk["n"], jwk["e"]), &Validation::new(Algorithm::RS256))?;
```
## Middleware for protected routes
Now that we’ve got the sign-in function in order, let’s take a closer look at the middleware function to protect our routes. Add a new function by copying and pasting the code below into the `auth.rs` file:
```rust
pub async fn authorization_middleware(mut req: Request, next: Next) -> Result<Response<Body>, AuthError> {
let auth_header = req.headers_mut().get(http::header::AUTHORIZATION);
let auth_header = match auth_header {
Some(header) => header.to_str().map_err(|_| AuthError {
message: "Empty header is not allowed".to_string(),
status_code: StatusCode::FORBIDDEN
})?,
None => return Err(AuthError {
message: "Please add the JWT token to the header".to_string(),
status_code: StatusCode::FORBIDDEN
}),
};
let mut header = auth_header.split_whitespace();
let (bearer, token) = (header.next(), header.next());
let token_data = match decode_jwt(token.unwrap().to_string()) {
Ok(data) => data,
Err(_) => return Err(AuthError {
message: "Unable to decode token".to_string(),
status_code: StatusCode::UNAUTHORIZED
}),
};
// Fetch the user details from the database
let current_user = match retrieve_user_by_email(&token_data.claims.email) {
Some(user) => user,
None => return Err(AuthError {
message: "You are not an authorized user".to_string(),
status_code: StatusCode::UNAUTHORIZED
}),
};
req.extensions_mut().insert(current_user);
Ok(next.run(req).await)
}
```
Let’s explain the code. The function takes a mutable `Request` and `Next` objects as arguments and returns a `Response` or `Error` result. This is a typical Axum middleware function signature. The `Next` object represents the next middleware or handler in the chain that should be called after this middleware.
Now, we’ll grab the header content and attempt to extract the token that was passed to it by the client:
```rust
let auth_header = req.headers_mut().get(http::header::AUTHORIZATION);
```
If the token exists, we go ahead to decode the token, get the user’s email from it, and query the database to fetch the user’s profile. Then, we pass the user information to app extensions for the handler that will be using the middleware and handling the request.
Remember the `protected` endpoint and the corresponding `hello` handler?
```rust
.route("/protected/",get(services::hello).layer(middleware::from_fn(auth::authorize_middleware)),)
```
The `hello` handler takes in an extension as an argument with the type `CurrentUser` type and returns a type of `impl IntoResponse` which is the typical return type of all Axum handlers.
```rust
pub async fn hello(Extension(currentUser): Extension<CurrentUser>) -> impl IntoResponse {
...
}
```
Next, let's test our implementation with Postman. If you'd love to clone the entire project and dive deep into it, or just test it out, you can clone it from GitHub by running the command below:
```shell
git clone https://github.com/ezesundayeze/axum--auth
```
## Testing with Postman
We’ve have developed two endpoints: the login endpoint and the protected endpoint. Let’s start by running the server by running the command below:
```shell
cargo run
```
And then signing in with our username and password:  The login returns our JWT token as expected. Next, we’ll copy the JWT token and use it to access the protected endpoint but before that, if we make the API call without the token, we’ll get an error:  Add the token. Now we can access the protected API properly: 
## Conclusion
We’ve come a long way! I hope you enjoyed reading the walkthrough and following along (if you did follow along).
In this tutorial, we covered how to build a basic JWT authentication system from start to finish, noting all the key parts. From setting up the routes, handlers, and the middleware system, I hope this will help you bootstrap your Rust project easily. You can find the [full project on GitHub](https://github.com/ezesundayeze/axum--auth).
Happy hacking!
---
##[LogRocket](https://lp.logrocket.com/blg/rust-signup): Full visibility into web frontends for Rust apps
Debugging Rust applications can be difficult, especially when users experience issues that are hard to reproduce. If you’re interested in monitoring and tracking the performance of your Rust apps, automatically surfacing errors, and tracking slow network requests and load time, [try LogRocket](https://lp.logrocket.com/blg/rust-signup).
[](https://lp.logrocket.com/blg/rust-signup)
[LogRocket](https://lp.logrocket.com/blg/rust-signup) is like a DVR for web and mobile apps, recording literally everything that happens on your Rust application. Instead of guessing why problems happen, you can aggregate and report on what state your application was in when an issue occurred. LogRocket also monitors your app’s performance, reporting metrics like client CPU load, client memory usage, and more.
Modernize how you debug your Rust apps — [start monitoring for free](https://lp.logrocket.com/blg/rust-signup). | leemeganj |
1,878,097 | Introduction Mysql | Introduction Mysql Introduction Mysql is a popular open-source relational... | 0 | 2024-06-05T14:14:07 | https://dev.to/dana-fullstack-dev/introduction-mysql-3jej | webdev, beginners | # Introduction Mysql
## Introduction
Mysql is a popular open-source relational database management system (RDBMS) that is widely used in web applications and other software projects. It is known for its speed, reliability, and ease of use, making it a popular choice for developers who need a robust and scalable database solution.
Mysql is developed, distributed, and supported by Oracle Corporation, and it is available under the GNU General Public License (GPL). This means that Mysql is free to use, modify, and distribute, making it an attractive option for developers who want to avoid expensive licensing fees.
Mysql is compatible with a wide range of operating systems, programming languages, and development frameworks, making it a versatile and flexible database solution. It supports standard SQL queries, transactions, and data types, as well as advanced features like stored procedures, triggers, and views.
In this guide, we'll explore the key features and benefits of Mysql, as well as how to install, configure, and use Mysql in your own projects. Whether you're a beginner looking to learn the basics of Mysql or an experienced developer looking to optimize your database performance, this guide has you covered.
## Key Features of Mysql
Mysql offers a wide range of features and capabilities that make it a powerful and versatile database solution. Some of the key features of Mysql include:
- **Speed and Performance**: Mysql is known for its speed and performance, making it an ideal choice for high-traffic websites and applications. It uses efficient indexing, caching, and storage mechanisms to deliver fast query processing and data retrieval.
- **Reliability and Scalability**: Mysql is designed to be reliable and scalable, with support for high availability, replication, and clustering. It can handle large volumes of data and concurrent users, making it suitable for mission-critical applications.
- **Ease of Use**: Mysql is easy to install, configure, and use, with a user-friendly command-line interface and graphical tools. It supports standard SQL syntax and data types, making it easy to write and execute queries.
- **Security and Access Control**: Mysql provides robust security features, including user authentication, encryption, and access control. It supports role-based access control, SSL/TLS encryption, and data masking to protect sensitive data.
- **Flexibility and Extensibility**: Mysql is highly flexible and extensible, with support for plugins, storage engines, and custom functions. It can be customized to meet the specific needs of your application, with options for full-text search, spatial data processing, and more.
- **Community Support**: Mysql has a large and active community of developers, users, and contributors who provide support, documentation, and resources. You can find tutorials, forums, and user groups to help you get started with Mysql and troubleshoot any issues you encounter.
## Benefits of Using Mysql
There are several benefits to using Mysql as your database management system, including:
- **Cost-Effective**: Mysql is free to use, modify, and distribute, making it a cost-effective choice for developers who want to avoid expensive licensing fees. You can download and install Mysql on your own servers or use a cloud-based Mysql service for added convenience.
- **Performance**: Mysql is known for its speed and performance, with efficient indexing, caching, and storage mechanisms that deliver fast query processing and data retrieval. It can handle large volumes of data and concurrent users, making it suitable for high-traffic websites and applications.
- **Reliability**: Mysql is designed to be reliable and scalable, with support for high availability, replication, and clustering. It can handle mission-critical workloads and ensure data integrity and consistency across multiple servers and data centers.
- **Ease of Use**: Mysql is easy to install, configure, and use, with a user-friendly command-line interface and graphical tools. It supports standard SQL syntax and data types, making it easy to write and execute queries without a steep learning curve.
- **Security**: Mysql provides robust security features, including user authentication, encryption, and access control. It supports role-based access control, SSL/TLS encryption, and data masking to protect sensitive data from unauthorized access and disclosure.
- **Scalability**: Mysql is designed to be scalable, with support for high availability, replication, and clustering. It can handle large volumes of data and concurrent users, making it suitable for growing applications and expanding businesses.
## Conclusion
Mysql is a powerful and versatile database management system that offers speed, reliability, and ease of use for developers. Whether you're building a simple website or a complex web application, Mysql has the features and capabilities you need to store, retrieve, and manage your data effectively.
In this guide, we've explored the key features and benefits of Mysql, as well as how to install, configure, and use Mysql in your own projects. By leveraging the power of Mysql, you can build high-performance applications that meet the needs of your users and stakeholders.
If you're new to Mysql, we recommend starting with the official Mysql documentation and tutorials to learn more about the features and capabilities of this powerful database management system. With the right tools and resources, you can master Mysql and take your development skills to the next level. Happy coding!
## Additional Resources
- [Online database design](https://dynobird.com)
- [Mysql Tutorials](https://www.mysqltutorial.org/)
- [Mysql Community Forums](https://forums.mysql.com/) | dana-fullstack-dev |
1,878,098 | Reinvention and Refactoring: A Data-Driven, AI-Enhanced Framework for Managing Systems | NOTE: I'm aiming at making this a little easier to paw through with lists. I understand that... | 0 | 2024-06-05T14:10:37 | https://dev.to/edtbl76/reinvention-and-refactoring-a-data-driven-ai-enhanced-framework-for-managing-systems-1kln | _NOTE: I'm aiming at making this a little easier to paw through with lists. I understand that long-form paragraphs can be tougher to digest._
When faced with the challenge of improving software systems, organizations often grapple with the decision between reinvention and refactoring. Both approaches have their merits and drawbacks, particularly when considering long-term costs. This article provides a comprehensive comparison of reinvention and refactoring, explores the impact of unclean systems, and demonstrates how emerging trends in data and AI can optimize this decision-making process.
## Comparing Reinvention and Refactoring: Long-Term Cost Analysis
### Reinvention
**Reinvention** involves creating a new system from scratch, effectively replacing the existing one. This approach can be ideal when the current system is outdated, difficult to maintain, or unable to meet new requirements.
**Pros:**
- **Modern Architecture:** Leveraging the latest technologies can enhance scalability, performance, and security.
- **Elimination of Technical Debt:** Starting fresh removes accumulated technical debt.
- **Tailored Solutions:** The new system can be designed specifically for current and future needs.
**Cons:**
- **High Initial Costs:** Substantial investment in time, money, and resources.
- **Risk of Failure:** Large projects have higher risks of budget overruns, delays, or failure to meet expectations.
- **Operational Disruption:** Significant disruption to business operations during the transition period.
**Cost Factors:**
- **Development Costs:** High due to building a new system.
- **Training and Onboarding:** Additional costs for training employees on the new system.
- **Transition Costs:** Data migration and integration with other systems can be costly and complex.
### Refactoring
**Refactoring** involves incremental improvements to the existing system's codebase without changing external behavior. The goal is to enhance the system's structure, performance, and maintainability.
**Pros:**
- **Lower Initial Costs:** Generally less expensive and less risky than a complete reinvention.
- **Reduced Disruption:** Can be done incrementally, minimizing disruptions to ongoing business operations.
- **Preserve Existing Value:** Retains the value of the existing system while making it more adaptable and easier to maintain.
**Cons:**
- **Limited Impact:** May not address fundamental architectural flaws or limitations of the existing system.
- **Complexity:** Extensive refactoring can introduce new bugs or issues.
- **Incremental Costs:** Continuous improvement costs, with benefits accumulating over time.
**Cost Factors:**
- **Refactoring Costs:** Vary depending on the extent of technical debt and complexity.
- **Maintenance Costs:** Potential reduction in maintenance costs if refactoring is successful.
- **Operational Costs:** Minimal disruption compared to reinvention, but potential hidden costs if new issues arise.
### How Much Does Refactoring Save?
Refactoring can save costs in the long term by:
- **Reducing Technical Debt:** Lower maintenance and debugging costs.
- **Improving Performance:** Enhancing system efficiency, reducing operational costs.
- **Facilitating Future Changes:** Easier to implement new features and integrate with other systems.
However, the actual savings depend on the extent and quality of the refactoring. Poorly executed refactoring can lead to negligible savings or even increased costs.
### Case Studies and Real-World Examples
**Case Study 1: Capital One's Refactoring Journey**
Capital One embarked on a significant refactoring initiative to modernize its legacy systems. By systematically addressing technical debt and optimizing codebases, they significantly reduced maintenance costs and improved system performance. The refactoring process allowed them to implement new features more efficiently, resulting in substantial long-term savings (McKinsey & Company, 2020).
**Case Study 2: Uber's Reinvention Approach**
Uber reinvented its architecture by transitioning from a monolithic system to microservices. This reinvention allowed Uber to scale its platform more effectively and integrate new services seamlessly. Although the initial costs were high, the long-term benefits included enhanced performance, scalability, and the ability to adapt to market changes quickly (Ghosh, 2019).
## The Reality of Unclean Systems: Impact on Analysis
### Challenges of Unclean Systems
The previous examples and much of modern literature assume that systems evolve based on the best possible decisions. Even the least worst decisions provide an ideal landscape for innovation. Unfortunately, most systems suffer from failure, inexperience, rushed delivery, pivots, misalignment, and other strategic calamities. This complicates the decision to refactor versus reinvent.
**Impact on Analysis:**
- **Increased Complexity:** Legacy systems with significant technical debt require more extensive and frequent refactoring, increasing costs.
- **Unpredictable Outcomes:** Benefits of refactoring are more challenging to predict in systems with substantial unresolved issues.
- **Higher Risk of Bugs:** Refactoring in a dirty system increases the risk of introducing new bugs or issues, potentially increasing maintenance costs.
### Estimating Cost Benefits in Unclean Systems
**Reinvention:**
1. **Initial Costs:** High due to development, training, and transition expenses.
2. **Long-Term Savings:** Significant reduction in maintenance costs, improved operational efficiency, and reduced risk of system failures.
**Refactoring:**
1. **Initial Costs:** Moderate, depending on the extent of technical debt and complexity.
2. **Long-Term Savings:** Gradual reduction in maintenance costs and technical debt, improved system efficiency, and incremental benefits.
### Case Studies and Real-World Examples
**Case Study 3: Netflix's Hybrid Approach**
Netflix combined reinvention and refactoring by gradually migrating its monolithic architecture to a microservices-based system. They refactored parts of the existing system while reinventing critical components. This hybrid approach allowed them to manage costs effectively and minimize disruption while achieving long-term scalability and performance improvements (Hoffman, 2018).
**Case Study 4: Amazon's Continuous Refactoring**
Amazon continuously refactors its systems to manage technical debt and maintain high performance. By adopting a culture of constant improvement, Amazon ensures its systems remain efficient and adaptable. This approach has enabled Amazon to stay ahead of competitors and rapidly innovate (Vogels, 2019).
## Data and AI in De-Risking and Optimizing Decision Making
How can we avoid taking the wrong path? Many problems that lead to unclean systems are due to ambiguity and the inability to see past the immediate horizon. Emerging trends in data architectures and technology promote the functional integration of organizations, increasing the visibility of information critical to optimized decision-making. Artificial Intelligence helps automate and identify patterns otherwise invisible to human perception.
### Technical Debt Quantification
AI and data analytics can quantify technical debt by analyzing code repositories, version histories, and bug reports. AI tools can identify areas with high technical debt and estimate the cost of addressing it, providing a more objective basis for decision-making.
**Evidence:**
- **CAST Software's Application Intelligence Platform (AIP):** Uses AI to analyze the structural quality of software systems, identifying technical debt and its impact on maintainability and performance (CAST Software, 2020).
- **CodeScene:** An AI tool that visualizes code quality issues and technical debt, helping teams prioritize refactoring efforts based on data-driven insights (Tornhill, 2018).
### Predictive Maintenance and Performance Analytics
AI can analyze historical data to predict future system performance and maintenance needs. Predictive models can estimate how long the existing system can operate efficiently and when critical failures might occur, aiding in the decision between reinvention and refactoring.
**Evidence:**
- **AIOps (Artificial Intelligence for IT Operations):** Platforms like Splunk and Moogsoft use machine learning to predict and prevent IT incidents, optimize maintenance schedules, and reduce unplanned downtime (Splunk, 2020; Moogsoft, 2020).
- **Google's Site Reliability Engineering (SRE):** uses data-driven approaches to maintain and improve system reliability, balancing the cost of technical debt against the need for new features (Beyer et al., 2016).
### Cost-Benefit Analysis through Simulation
AI-driven simulation models can forecast the long-term costs and benefits of different strategies. By simulating various scenarios, organizations can visualize the potential impact of reinvention versus refactoring over time.
**Evidence:**
- **IBM's Watson Studio:** Allows businesses to build and deploy AI models for predictive analytics, helping in strategic decision-making through scenario analysis and simulation (IBM, 2020).
- **Simulink (by MathWorks):** Provides a simulation environment for modeling complex systems, enabling businesses to assess the impact of different strategies before implementation (MathWorks, 2020).
### Natural Language Processing (NLP) for Requirement Analysis
AI can assist in analyzing and extracting requirements from documentation, emails, and meeting transcripts, ensuring careful consideration of all stakeholder needs.
**Evidence:**
- **Automated Insights:** Tools like Receptiviti use NLP to analyze communication patterns and extract actionable insights, ensuring comprehensive requirement gathering (Receptiviti, 2020).
- **Requirements Assistant (by Siemens):** Uses NLP to automate the extraction and analysis of requirements from textual documents, improving accuracy and completeness (Siemens, 2020).
### Enhanced Decision Support Systems (DSS)
AI-powered DSS can integrate data from various sources, providing a holistic view of the decision landscape. These systems can recommend optimal strategies based on real-time data analysis.
**Evidence:**
- **Tableau with Einstein Analytics (Salesforce):** Integrates AI with data visualization to provide actionable insights and decision support, helping businesses make informed strategic choices (Salesforce, 2020).
- **Microsoft Power BI with Azure AI:** Combines advanced analytics with business intelligence to support data-driven decision-making (Microsoft, 2020).
### Case Studies and Real-World Examples
**Case Study 5: Capital One's AI-Driven Decision Support**
Capital One uses AI to manage technical debt by analyzing its codebase to identify areas that need refactoring. Their use of AI in decision-making has resulted in significant cost savings and improved system performance (McKinsey & Company, 2020).
**Case Study 6: Netflix's Predictive Analytics**
Netflix employs AI and data analytics to continuously improve its platform. By analyzing user data and system performance metrics, it can make informed decisions about when to refactor parts of its system and when to build new features (Hoffman, 2018).
**Case Study 7: Uber's Simulation Models**
Uber uses AI-driven simulation models to assess the impact of transitioning from a monolithic architecture to microservices. These models help predict the costs and benefits of reinvention, enabling informed decision-making (Ghosh, 2019).
## A Framework for Evaluating the Trade-Off
Based on the analysis above, a clear set of steps can be proposed for evaluating the trade-off between reinvention and refactoring. The following framework outlines each step and provides possible metrics and decision criteria.
### Step 1: Technical Debt Assessment
**Objective:** Quantify the current technical debt and its impact on system performance and maintainability.
**Metrics:**
- Technical debt ratio
- Code quality scores
- Number of critical bugs and issues
### Step 2: Cost-Benefit Analysis
**Objective:** Estimate the long-term costs and benefits of both reinvention and refactoring.
**Metrics:**
- Development and maintenance costs
- Predicted system performance improvements
- Potential operational disruptions
### Step 3: Risk Assessment
**Objective:** Evaluate the risks associated with each approach, including the potential for project failure and impact on business operations.
**Metrics:**
- Risk of budget overruns
- Risk of delays
- Risk of introducing new issues
### Step 4: Predictive Analytics
**Objective:** Use AI-driven predictive models to forecast future system performance and maintenance needs.
**Metrics:**
- Predicted system lifespan
- Maintenance cost projections
- Performance improvement forecasts
### Step 5: Stakeholder Requirement Analysis
**Objective:** Ensure all stakeholder needs are considered and accurately reflected in the decision-making process.
**Metrics:**
- Requirement coverage
- Stakeholder satisfaction scores
- Alignment with business goals
### Step 6: Scenario Simulation
**Objective:** Simulate various scenarios to visualize the potential impact of different strategies over time.
**Metrics:**
- Scenario outcome comparisons
- Cost-benefit ratios
- Long-term sustainability assessments
### Step 7: Decision Support Integration
**Objective:** Integrate data from various sources to provide a comprehensive view of the decision landscape and recommend optimal strategies.
**Metrics:**
- Decision accuracy
- Time to decision
- Alignment with strategic objectives
## Conclusion
The decision between reinvention and refactoring is complex and multifaceted, particularly when dealing with unclean systems. However, organizations can de-risk and optimize this decision-making process by leveraging data and AI. Through technical debt quantification, predictive maintenance, cost-benefit analysis, and enhanced decision support systems, businesses can make more informed and strategic choices. Following the proposed framework, organizations can systematically evaluate the trade-offs and select the approach that best aligns with their long-term goals and operational constraints.
### References
- Beyer, B., Jones, C., Petoff, J., & Murphy, N. R. (2016). *Site Reliability Engineering: How Google Runs Production Systems*. O'Reilly Media.
- CAST Software. (2020). *Application Intelligence Platform*. Retrieved from https://www.castsoftware.com/products/application-intelligence-platform
- Ghosh, R. (2019). How Uber Scaled Its Architecture from Monolith to Microservices. *Medium*. Retrieved from https://medium.com/uber-eng/how-uber-scaled-its-architecture-from-monolith-to-microservices-5a6d7b94d56e
- Hoffman, K. (2018). The Netflix Tech Blog. *Medium*. Retrieved from https://netflixtechblog.com
- IBM. (2020). *Watson Studio*. Retrieved from https://www.ibm.com/cloud/watson-studio
- MathWorks. (2020). *Simulink*. Retrieved from https://www.mathworks.com/products/simulink.html
- McKinsey & Company. (2020). Managing technical debt for better software engineering. Retrieved from https://www.mckinsey.com/business-functions/mckinsey-digital/our-insights/managing-technical-debt-for-better-software-engineering
- Microsoft. (2020). *Power BI with Azure AI*. Retrieved from https://www.microsoft.com/en-us/ai/azure-power-bi
- Moogsoft. (2020). *AIOps Platform*. Retrieved from https://www.moogsoft.com/product/aiops-platform/
- Salesforce. (2020). *Tableau with Einstein Analytics*. Retrieved from https://www.salesforce.com/products/einstein-analytics/overview/
- Siemens. (2020). *Requirements Assistant*. Retrieved from https://new.siemens.com/global/en/products/software/simcenter/requirements-assistant.html
- Splunk. (2020). *AIOps*. Retrieved from https://www.splunk.com/en_us/solutions/aiops.html
- Tornhill, A. (2018). *CodeScene: Behavioral Code Analysis*. Empear. Retrieved from https://codescene.io | edtbl76 | |
1,878,096 | Insta Pro | Insta Pro is 100% safe and secure.Insta Prois verified through multiple malwareand virus protection... | 0 | 2024-06-05T14:09:02 | https://dev.to/riya_roy_2e9da898bf00579f/insta-pro-29ln | Insta Pro is 100% safe and secure.<a href="https://instapromanager.com/">Insta Pro</a>is verified through multiple malwareand virus protection platforms like TotalAV, Norton 360 Antivirus, Bitdefender Antivirus Plus,Surfshark Antivirus, and Malwarebytes.If you are still worrying about the safety feel free to cross-check.Every update you will get from Instapro will be safe and you can enjoy Instapro without any worry. | riya_roy_2e9da898bf00579f | |
1,878,095 | Unlocking Real-Time Chat with GetStream.io: A Developer's Guide 💬 | In today's fast-paced digital world, real-time communication is key. Whether you're building a... | 0 | 2024-06-05T14:09:02 | https://dev.to/elizabethsobiya/unlocking-real-time-chat-with-getstreamio-a-developers-guide-1noh | webdev, beginners, programming, tutorial |
In today's fast-paced digital world, real-time communication is key. Whether you're building a messaging app, a social media platform, or a customer support system, integrating a reliable and scalable chat solution is crucial. This is where [GetStream.io](https://getstream.io) comes into play. GetStream.io offers a robust chat API that makes it easy to add real-time chat functionality to your applications. In this post, we'll explore how to leverage GetStream.io to create seamless and engaging chat experiences.
## Why Choose GetStream.io?
### 1. **Scalability and Performance**
GetStream.io is designed to handle millions of concurrent users, ensuring your chat application can scale effortlessly as your user base grows. The API is built with performance in mind, providing low-latency communication that's crucial for real-time interactions.
### 2. **Feature-Rich Chat API**
GetStream.io offers a plethora of features out-of-the-box, including:
- **Real-time messaging**: Instant delivery of messages.
- **User presence**: Show when users are online or offline.
- **Typing indicators**: Notify users when someone is typing.
- **Message history**: Persist and retrieve past conversations.
- **Push notifications**: Keep users engaged with timely alerts.
### 3. **Easy Integration**
With well-documented SDKs and APIs for various platforms (JavaScript, iOS, Android, and more), integrating GetStream.io into your application is straightforward. You can quickly get up and running with minimal setup.
## Getting Started with GetStream.io
### Step 1: Sign Up and Create an App
First, you'll need to sign up for a GetStream.io account. Once you've registered, create a new app in the GetStream.io dashboard. This will provide you with the necessary API keys to connect your application to the GetStream.io service.
### Step 2: Install the SDK
Next, install the GetStream.io SDK for your platform. For a React application, you can use the following command:
```bash
npm install stream-chat-react
```
### Step 3: Initialize the Client
Initialize the GetStream.io client in your application using the API key you received:
```javascript
import { StreamChat } from 'stream-chat';
const client = StreamChat.getInstance('YOUR_API_KEY');
```
### Step 4: Connect a User
To interact with the chat service, you'll need to connect a user. You'll typically do this after a user logs into your application:
```javascript
client.connectUser(
{
id: 'user-id',
name: 'User Name',
image: 'https://path-to-avatar/image.jpg',
},
userToken // Token generated for the user
);
```
### Step 5: Create or Join a Channel
Now, let's create or join a chat channel:
```javascript
const channel = client.channel('messaging', 'channel-id', {
name: 'General Chat',
});
await channel.watch();
```
### Step 6: Send and Receive Messages
With the channel set up, you can now send and receive messages:
```javascript
// Sending a message
await channel.sendMessage({
text: 'Hello, world!',
});
// Receiving messages
channel.on('message.new', (event) => {
console.log(event.message);
});
```
### Step 7: Implement UI Components
GetStream.io provides pre-built React components for common chat features, making it easy to create a polished chat interface. Here's a basic example using the `Channel` and `MessageList` components:
```javascript
import { Chat, Channel, ChannelHeader, MessageList, MessageInput } from 'stream-chat-react';
import 'stream-chat-react/dist/css/index.css';
const App = () => (
<Chat client={client} theme="messaging light">
<Channel channel={channel}>
<ChannelHeader />
<MessageList />
<MessageInput />
</Channel>
</Chat>
);
```
## Conclusion
Integrating real-time chat into your application has never been easier thanks to GetStream.io. With its powerful API, scalability, and ease of use, you can quickly add chat functionality to your app and create engaging, real-time experiences for your users. Whether you're building a small project or a large-scale application, GetStream.io has the tools you need to succeed.
Ready to get started? Head over to [GetStream.io](https://getstream.io) and start building your real-time chat application today!
Feel free to share your experiences and any questions you have in the comments below. Happy coding! | elizabethsobiya |
1,878,094 | Nullable value Types | C# | Bugun biza o'rganishimiz shart bo'lgan narsalar quyidagicha 👇 Declaretion va Assigment Null... | 0 | 2024-06-05T14:07:44 | https://dev.to/ozodbek_soft/nullable-value-types-c-5d89 | dotnet, csharp, nullable, uzbek | **Bugun biza o'rganishimiz shart bo'lgan narsalar quyidagicha 👇**
- _Declaretion va Assigment_
- _Null bo'ladigan misollar qiymatlarini tekshirish_
- _Null qiymatni primative typega o'tqazish _
- _Vahokazolar_
**Null bu Value type**! Odatda null qiymat biriktirish uchun asosan 1 ta belgidan foydalaniladi. Bu `?` belgisi. Biz ko'pincha ishlatadigan Ma'lumot turlari o'z o'zidan null qiymat olishi mumkin emas. **Misol uchun**: `bool?` >> `True`, `False`, `Null`. Har qanday Null qiymat `System.Nullable<T>` Structurasiga tegishlidir.
Quyidagi almashtirilgan shakllardan birida `T` asosiy turga ega null qiymat turiga murojaat qilishingiz mumkin. Asosiy malumot turining aniqlanmagan qiymatini ko'rsatish uchun `null` dan foydalanish kerak.
**Declaretion & Assigment**
**Declaretion** - bu C# dasturlash tilida o'zgaruvchi e'lon qilib, unga qiymat berish. **Assigment** esa xuddi shu qiymat berish jarayonidagi `=` belgisi!
Practice
```
double? pi = 3.14;
char? letter = 'A';
int? son = 10;
int? son2 = son;
bool? test = null;
// Ushbu ko'rsatilgan array Value type va Uning qiymati Null
int?[] sonlar = new int?[10];
```
**Null bo'lishi mumkin bo'lgan misol tekshiramiz!**
```
int? a = 43;
if (a is int valueOfA)
{
Console.WriteLine($"a is {valueOfA}");
}
else
{
Console.WriteLine("a does not have a value");
}
// Output:
// a is 42
```
Davomi bor...
| ozodbek_soft |
1,878,087 | Unveiling the Beauty of Desert Marble A Geological Wonder | Desert marble is a geological marvel that captivates with its natural beauty and versatility. As a... | 0 | 2024-06-05T13:57:37 | https://dev.to/stonesolutions/unveiling-the-beauty-of-desert-marble-a-geological-wonder-27en | Desert marble is a geological marvel that captivates with its natural beauty and versatility. As a prized material for landscapers, it offers a unique blend of elegance and durability, making it an ideal choice for various outdoor and indoor applications. In this comprehensive guide, we'll delve into the different aspects of desert marble, from its formation to its applications in architecture and art.
## **Categories**
Regarding desert marble, there's a fascinating array of categories to explore, each with its unique characteristics and visual appeal. Let's dive into the different categories of desert marble:
## **White Desert Marble**
White desert marble is renowned for its pristine, luminous appearance. Characterized by a predominantly white base with subtle veining in shades of gray, beige, or even gold, this variant exudes elegance and sophistication. It's a popular choice for creating bright, airy spaces and adding a touch of timeless beauty to architectural designs.
## **Black Desert Marble**
In stark contrast to its white counterpart, black desert marble wall makes a bold statement with its deep, rich coloration and striking veining patterns. With hues ranging from charcoal to jet black, interspersed with white, gray, or gold veins, this variant adds drama and depth to any landscape or interior setting. It's often used to create dramatic accent pieces or create a sense of luxury and opulence in architectural projects.
## **Gray Desert Marble**
Gray desert marble perfectly balances light and dark, offering a versatile option for landscape design and architectural applications. With a neutral gray base and subtle veining in white, black, or silver shades, this variant lends itself well to modern and traditional design schemes.Its subtle sophistication and enduring charm have made it a favored choice for numerous projects, from sleek countertops to expansive flooring installations.
**## Specifications**
Understanding the specifications of desert marble is crucial for landscapers and designers to make informed decisions about its usage in various projects. Here, we'll delve into the critical specifications of desert marble:
## **Durability**
Desert marble is renowned for its exceptional durability, making it a popular choice for indoor and outdoor applications. With proper sealing and maintenance, desert marble can withstand heavy foot traffic, extreme weather conditions, and other environmental factors, ensuring longevity and resilience in landscaping projects.
## **Heat Resistance**
Another notable characteristic of desert marble is its high heat resistance, making it suitable for outdoor installations such as patios, pool surrounds, and Desert Marble kitchens. Its natural ability to withstand heat makes it an ideal choice for areas exposed to direct sunlight or high temperatures, ensuring that it maintains its beauty and integrity over time.
## **Moisture Resistance**
While desert marble is highly resistant to heat, it's also essential to consider its moisture resistance, especially for outdoor applications where it may be exposed to rain, humidity, or moisture from irrigation systems. To keep marble safe from damage and discoloration, it's important to seal and maintain it properly to stop water from getting in.
## **Veining Patterns**
One of the defining characteristics of desert marble is its intricate veining patterns, which add depth, texture, and visual interest to landscapes and architectural designs. The unique patterns vary from subtle and understated to bold and dramatic, allowing for endless creative possibilities in design applications.
## **Color Variation**
Desert marble comes in different colors because of the minerals and conditions where it forms. You can find it in pure white, deep black, and shades of gray, beige, and gold. Each type of desert marble has its own unique colors, making it versatile for many different designs.
## **Size and Thickness**
Desert marble is available in various sizes and thicknesses to accommodate different landscaping needs and design requirements. Desert marble is super versatile! You can use it for flooring, covering walls, making countertops, or adding stylish touches around the place. And the best part? It's easy to cut and shape to fit exactly what you need. So whether you're covering a big floor or just adding a little flair, desert marble has you covered, fitting perfectly into any project without a hitch.
## **Formation of Desert Marble**
The formation of desert marble is a fascinating process that unfolds over millions of years, driven by the powerful forces of nature. Let's explore how this geological wonder comes into existence:
## **Origin**
Desert marble originates from limestone, a sedimentary rock composed primarily of calcium carbonate derived from the accumulation of marine organisms such as shells, coral, and algae. Over time, layers of sediment build up on the ocean floor, compressing and solidifying into limestone deposits.
## **Metamorphism**
The transformation of limestone into marble begins with metamorphism, which occurs deep within the Earth's crust under conditions of high temperature and pressure. As tectonic plates shift and collide, limestone deposits are subjected to immense pressure from overlying rock layers and intense heat from the Earth's mantle.
## **Recrystallization**
Under the heat and pressure of metamorphism, limestone's mineral composition and structure undergo profound changes. The calcium carbonate minerals in the limestone recrystallize, forming interlocking crystals of calcite or dolomite, which are the primary constituents of marble. This recrystallization process gives marble its distinctive crystalline texture and characteristic veining patterns.
## **Mineral Impurities**
During metamorphism, various mineral impurities present in the original limestone can influence the coloration and veining patterns of the resulting marble. For example, iron oxide may impart shades of red, brown, or yellow, while graphite can create dark veins in the marble. These mineral impurities contribute to the unique aesthetic appeal of desert marble and give each specimen its distinct character.
## **Exhumation and Exposure**
Over time, geological uplift and erosion gradually bring marble deposits closer to the Earth's surface, exposing them to weathering and erosion processes. Natural elements like wind, water, and ice sculpt the landscape, revealing the beauty of desert marble formations and creating awe-inspiring geological wonders in desert regions worldwide.
## **Desert Marble Mining Practices**
Mining desert marble is a meticulous process that involves careful planning, extraction, and processing to preserve this precious natural resource. The following steps outline the typical mining practices involved in harvesting desert marble:
## **Exploration and Site Selection**
The first step in mining desert marble is identifying suitable sites with high-quality marble deposits. Geologists and mining engineers conduct surveys and tests to determine a site's feasibility and potential yield.
## **Clearing and Preparation**
Once a suitable site is identified, vegetation and topsoil are cleared to expose the marble deposits beneath. Heavy machinery, such as bulldozers and excavators, removes overburden and prepares the site for extraction.
## **Extraction**
Desert marble is usually extracted through open-pit mining, where large blocks are cut from the quarry walls using wire saws, chainsaws, or diamond wire saws. The blocks are then carefully separated and transported to processing facilities for further refinement.
## Processing and Cutting
At the processing facility, the marble blocks are cut into slabs or tiles of various sizes and thicknesses using saws or cutting machines. The cut pieces are then polished to enhance their natural luster and beauty, creating finished products for sale and distribution.
Environmental Impact Assessment
Mining operations can significantly impact the environment, including habitat disruption, soil erosion, and water pollution. Environmental impact assessments are conducted to identify potential risks and implement mitigation measures to minimize environmental harm.
Reclamation
Once mining operations are complete, the land is reclaimed and restored to its natural state as much as possible. This process may involve regrading the land, planting native vegetation, and restoring natural waterways to promote ecosystem recovery.
Sustainability Practices
To ensure the long-term sustainability of desert marble mining, companies are increasingly adopting sustainable practices such as water recycling, energy efficiency, and biodiversity conservation. These practices aim to reduce environmental impact and promote responsible resource management.
Conservation Efforts
Preserving the delicate balance of ecosystems and natural resources is paramount in the mining industry, including extracting desert marble. Conservation efforts are essential to mitigate environmental impact and ensure the sustainable management of resources. Here are some key conservation initiatives undertaken within the desert marble mining industry:
Habitat Restoration
Mining operations can disrupt natural habitats and ecosystems. To mitigate this impact, companies engage in habitat restoration projects aimed at restoring native vegetation, replanting trees, and rehabilitating disturbed landscapes. By restoring habitats, mining companies help promote biodiversity and ecosystem resilience.
Biodiversity Conservation
Mining activities can affect local flora and fauna, leading to habitat loss and fragmentation. Conservation efforts focus on preserving biodiversity by protecting sensitive habitats, establishing wildlife corridors, and implementing measures to minimize disturbance to native species. By safeguarding biodiversity, mining companies contribute to ecosystems' long-term health and resilience.
Sustainable Practices
Adopting sustainable mining practices is integral to minimizing environmental impact and reducing the carbon footprint of mining operations. Companies invest in energy-efficient technologies, implement waste reduction measures, and prioritize using renewable energy sources to mitigate greenhouse gas emissions. Additionally, incorporating eco-friendly alternatives such as recycled materials and sustainable packaging helps minimize the environmental footprint of mining activities.
Regulatory Compliance
Compliance with environmental regulations and industry standards is essential for ensuring responsible mining practices. Regular monitoring and reporting of ecological performance help identify areas for improvement and ensure accountability in environmental stewardship.
Unique Features
Desert marble isn't just another type of stone—it's a geological wonder with some remarkable features that set it apart. Let's take a closer look at what makes desert marble so unique:
Stunning Veining Patterns
One of the most striking features of desert marble is its mesmerizing veining patterns. These natural designs, formed over millions of years, create captivating swirls, streaks, and lines that add depth and character to any surface. Whether you choose white, black, or gray desert marble, you'll be treated to a visual feast of intricate patterns that elevate the aesthetic of your landscape or interior space.
Exceptional Durability
Desert marble isn't just beautiful but incredibly durable. Thanks to its formation process under intense heat and pressure, desert marble boasts impressive strength and resilience. Whether used outdoors in harsh weather conditions or indoors in high-traffic areas, desert marble can withstand the test of time, retaining its beauty for generations to come.
Versatile Applications
From sleek countertops to expansive flooring installations, desert marble offers endless possibilities for creative expression. Its versatility allows it to be used in various applications, including landscaping, architecture, and interior design. Whether you envision a stunning outdoor patio, an elegant kitchen backsplash, or a striking feature wall, desert marble can bring your vision to life with style and sophistication.
Compatibility with Seeding Concrete
One of desert marble's lesser-known but highly beneficial features is its compatibility with seeding concrete. Seeding concrete involves embedding decorative elements, such as aggregates or stones, into the surface of freshly poured concrete to enhance its appearance.
Desert Marble in Architecture
Desert marble plays a significant role in architecture. Designers and architects all around the world love using it because it's both super classy and lasts a really long time. Let's explore how desert marble is utilized in architectural projects, and we'll highlight some critical keywords along the way.
Building Façades
Desert marble is often used to clad the exteriors of buildings, adding a touch of sophistication and luxury. Its beauty from nature and its strength to last long make it perfect for making impressive building exteriors that stay strong for years to come. Whether a sleek office tower or a stately mansion, desert marble lends an air of prestige and refinement to any architectural design.
Flooring
Marble is prized for its smooth texture and distinctive veining, making it a popular choice for flooring in residential and commercial spaces. From grand entryways to elegant ballrooms, desert marble flooring adds a sense of opulence and luxury to any interior setting. Its durability and resistance to wear make it well-suited for high-traffic areas, ensuring long-lasting beauty and performance.
Countertops and Surfaces
Marble countertops are a hallmark of luxury and sophistication in kitchen and bathroom design. Desert marble is perfect for countertops because it's not only naturally beautiful but also tough enough to handle daily wear and tear. Plus, it can take the heat, so you don't have to worry about hot pots or pans damaging it. So, you get both durability and beauty in one. Whether a sleek kitchen island or a vanity top, desert marble adds refinement to any space.
Sculptures and Art Installations
In addition to its practical applications, marble is also prized for its aesthetic appeal in art and sculpture. Artists and sculptors carve desert marble into intricate masterpieces, showcasing its inherent beauty and versatility. Whether it's a majestic statue in a public square or a contemporary art installation in a gallery, desert marble captivates with its timeless elegance and artistic allure.
Sustainability and Environmental Impact
While marble is a natural stone, its extraction and processing can have environmental implications. Architects and designers are becoming more aware of how using materials like marble can affect the environment. They're choosing to use sustainable practices and look for alternative materials whenever they can. From sourcing marble from responsibly managed quarries to incorporating recycled materials like carbon slate into architectural designs, there's a growing emphasis on reducing the carbon footprint of construction projects while still achieving stunning aesthetic results.
Desert Marble in Art
Desert marble isn't just a material for construction—it's a medium for artistic expression. Both artists and sculptors are attracted to desert marble because of its special beauty and adaptability. They use it to make incredible pieces of art that capture people's imaginations.
Sculptures
One of the most striking uses of desert marble in art is in sculpture. Artists carve intricate shapes and figures from marble blocks, showcasing the stone's natural veining and texture. From delicate figurines to imposing statues, desert marble sculptures command attention with their timeless beauty and meticulous craftsmanship.
Carvings
Desert marble comes in different colors because of the minerals and conditions where it forms. You can find it in pure white, deep black, and shades of gray, beige, and gold. Each type of desert marble has its own unique colors, making it versatile for many different designs. The use of boulders in landscaping can be complemented by desert marble, adding both texture and color to create visually stunning outdoor spaces.
Mixed Media Art
In addition to standalone marble pieces, desert marble is often incorporated into mixed media artworks, where it complements other materials such as carbon, slate, or wood. These mixed media creations combine the unique properties of each material to create visually stunning compositions that blur the boundaries between sculpture, painting, and installation art.
**Conclusion**
In conclusion, desert marble stands as a testament to the awe-inspiring forces of nature, offering landscapers a unique canvas to create breathtaking outdoor environments. Desert marble starts deep in the earth and changes into breathtaking art and buildings. It's beautiful forever and keeps drawing people in with its charm. As we strive to preserve and protect this geological wonder for future generations, let us cherish its splendor and embrace its role in shaping the landscapes of our world.
At Decorative Stone Solutions, we understand the importance of selecting the right materials for your landscaping needs. Whether you're debating between play sand vs paver sand or considering the best methods to protect your prized marble, our expertise and guidance are here to assist you every step of the way. By prioritizing maintenance and choosing quality products, you can ensure that your outdoor spaces remain stunning and resilient for years to come.
| stonesolutions | |
1,878,093 | Fetch images and Display Flex | .App { font-family: sans-serif; text-align: center; } .image-container { display:... | 0 | 2024-06-05T14:07:13 | https://dev.to/alamfatima1999/fetch-images-and-display-flex-4log | ```CSS
.App {
font-family: sans-serif;
text-align: center;
}
.image-container {
display: flex;
}
.image-box {
width: 30px;
height: 30px;
}
.image-container {
display: flex;
flex-wrap: wrap;
}
```
```JS
import { StrictMode } from "react";
import { createRoot } from "react-dom/client";
import App from "./App";
const rootElement = document.getElementById("root");
const root = createRoot(rootElement);
root.render(
<StrictMode>
<App />
</StrictMode>
);
```
```JS
import React, { useState } from "react";
import { useEffect } from "react";
import "./styles.css";
const App = () => {
const URL = `https://jsonplaceholder.typicode.com/photos`;
const [imageList, setImageList] = useState([]);
useEffect(() => {
fetch(URL)
.then((res) => {
// console.log(res);
return res.json();
})
.then((data) => {
console.log(data);
setImageList(data);
})
.catch((err) => {
console.log(err);
});
}, []);
return (
<div className="image-container">
{imageList.map((image) => {
return (
<div key={image.id}>
{/* <div>{image.title}</div> */}
<img className="image-box" src={image.url}></img>
</div>
);
})}
</div>
);
};
export default App;
```
| alamfatima1999 | |
1,878,092 | Boost Your Online Store: Comprehensive Ecommerce Marketing Techniques | In today’s competitive digital market, getting to know ecommerce advertising and marketing is crucial... | 0 | 2024-06-05T14:05:26 | https://dev.to/liong/boost-your-online-store-comprehensive-ecommerce-marketing-techniques-3lih | seo, onpage, blog, malaysia | In today’s competitive digital market, getting to know ecommerce advertising and marketing is crucial for any online store aiming for achievement. Effective advertising strategies no longer simplest force traffic in your website however also convert site visitors into dependable clients. This comprehensive guide will explore key ecommerce advertising strategies, supplying realistic suggestions to help your [online marketing store](https://ithubtechnologies.com/ecommerce-online-retailer/?utm_source=dev.to%2F&utm_campaign=boostyouronlinestore&utm_id=Offpageseo+2024).
## Understanding Ecommerce Marketing
E-commerce includes the acquisition and sale of goods and offerings on-line and is virtually simply one part of e-commercial enterprise. An e-business entails the whole procedure of walking a employer on-line. Put sincerely, it is all of the hobby that takes region with a web commercial enterprise.
## **Key Ecommerce Marketing Techniques**
## 1. Search Engine Optimization (search engine optimization)
SEO is essential for riding organic site visitors to your online keep. It includes optimizing your internet site to rank better on seek engine consequences pages (SERPs). Key additives of SEO consist of:
**Keyword Research**
Identify and use applicable key phrases that your target market is searching for Tools like Google Keyword Planner, Ahrefs, and SEMrush allow you to find out the excellent key phrases on your products.
**On-Page seek engine advertising and marketing**
Optimize web page titles, meta descriptions, headers, and product descriptions with focused key terms. Ensure your content is splendid and provides cost for your site visitors.
**Technical SEO**
Improve your web web page’s technical additives, which include web site speed, mobile-friendliness, and steady sockets layer (SSL) encryption. Use equipment like Google Page Speed Insights to become aware of and connect technical problems.
**Link Building**
Acquire amazing one way links from authentic websites. This may be achieved thru visitor running a blog, partnerships, and creating shareable content.
## **2. Content Marketing**
Content advertising and marketing and advertising builds receive as actual with and authority through manner of offering treasured data on your goal market. Effective content material strategies consist of:
**Blog Posts**
Regularly publish weblog posts that provide insights, recommendations, and industry news associated with your merchandise. This not only engages your target audience however additionally improves your search engine optimization.
**Product Guides**
Create exact guides that help clients understand and use your merchandise effectively. These may be inside the form of articles, videos, or info graphics.
**Video Content**
Utilize films to illustrate your merchandise, proportion tutorials, and tell your emblem tale. Video content material is enormously engaging and might notably increase conversions.
**User-Generated Content**
Encourage your clients to create content, such as opinions, testimonials, and social media posts providing your merchandise. This builds social evidence and enhances credibility.
## **3. Social Media Marketing**
Social media platforms are powerful tools for reaching and attractive along with your target market. Key procedures include:
**Platform Selection**
Focus at the platforms in which your target audience is most energetic, inclusive of Facebook, Instagram, Pinterest, or LinkedIn.
**Content Calendar**
Plan and agenda ordinary posts to keep consistency and maintain your target audience engaged. Use gear like Hoot suite or Buffer to manipulate your social media calendar.
**Interactive Content**
Engage your target market with polls, quizzes, stay motion pictures, and tales. Interactive content material material will growth engagement and fosters a experience of network.
**Influencer Partnerships**
Collaborate with influencers to attain a broader target audience and construct credibility. Choose influencers whose goal market aligns along with your goal market.
## **4. Email Marketing**
Email advertising remains one of the best strategies to nurture leads and hold customers. Email advertising remains one of the most effective approaches to nurture leads and keep clients. Successful techniques include:
**Segmentation**
Divide your email list into segments based on patron conduct and preferences. This lets in you to ship personalized and relevant emails.
**Personalization**
Use client facts to personalize email content material, making it greater applicable and engaging. Personalized emails have better open and click on-via charges.
**Automated Campaigns**
Set up automated electronic mail campaigns for welcome series, abandoned cart reminders, and put up-buy comply with-ups. Automation saves time and guarantees well timed communication.
## **5. Pay-Per-Click (PPC) Advertising**
PPC advertising can drive on the spot traffic to your ecommerce site. Effective PPC techniques encompass:
**Keyword Targeting**
Use keyword research to bid on terms that your target audience is trying to find. Google Ads and Bing Ads are famous PPC structures.
**Ad Copy**
Write compelling ad duplicate that highlights the blessings of your products and includes a sturdy call to movement.
**Landing Pages**
Ensure your landing pages are optimized for conversions with clean messaging, super picks, and smooth navigation.
**Remarketing**
Use remarketing advertisements to re-have interaction visitors who've previously interacted with your site. This can assist get better lost sales and boom conversion costs.
## **6. Influencer Marketing**
Partnering with influencers can amplify your reach and build trust. Key steps encompass:
**Identify Relevant Influencers**
Choose influencers whose target market matches your goal marketplace. Micro-influencers with smaller but fantastically engaged fans may be specifically powerful.
**Build Authentic Relationships**
Engage with influencers authentically to foster genuine partnerships. This includes commenting on their posts, sharing their content material, and taking part on campaigns.
**Collaborate on Content**
Work with influencers to create content material that showcases your products in an actual manner. Influencer-generated content may be quite persuasive.
**Measure Impact**
Track the overall performance of influencer campaigns to assess ROI and alter techniques. Use equipment like Hype Auditor or Track to display influencer overall performance.
## **7. Affiliate Marketing**
Affiliate advertising and marketing can power sales via leveraging the attain of partners. Effective processes encompass:
**Set Up an Affiliate Program**
Provide associates with monitoring links and advertising substances. Platforms like Share A Sale and CJ Affiliate assist you to manage your software.
**Recruit Affiliates**
Find companions who align with your logo and have an engaged target market. Offer competitive commissions to incentivize associates.
**Monitor Performance**
Track affiliate sales and optimize your application primarily based on overall performance information. Regularly talk with associates to maintain sturdy relationships.
## **8. Customer Reviews and Testimonials**
Positive evaluations can have an effect on purchasing decisions and build accept as true with. Encourage customers to leave reviews via:
**Requesting Feedback**
Ask for opinions after purchase via email or in your site. Make it smooth for clients to go away comments.
**Incentivizing Reviews**
Offer reductions or different incentives for leaving opinions. This can growth the wide variety of opinions you get hold of.
**Highlighting Testimonials**
Display client testimonials prominently in your product pages and advertising substances. This builds social proof and complements credibility.
**Responding to Reviews**
Engage with each effective and poor critiques to expose that you value consumer comments. Address any issues promptly and professionally.
## **9. Retargeting Campaigns**
Retargeting commercials remind traffic of your merchandise and inspire them to complete their buy. Key techniques encompass:
**Segment Your Audience**
Create tailor-made commercials for exclusive segments of traffic, including individuals who considered a product but didn’t purchase.
**Personalize Ads**
Use dynamic retargeting to reveal personalized ads proposing merchandise that traffic regarded. This increases the chance of conversion.
**Optimize Frequency**
Balance advert frequency to keep your brand top of thoughts without overwhelming customers. Too many ads can result in ad fatigue.
**Test and Refine**
Continuously check advert creative and strategies to improve performance. Use analytics to tune results and make records-driven choices.
## **Conclusion**
By enforcing those comprehensive ecommerce advertising strategies, you could extensively boost your on-line shop’s overall performance. Consistently refining your strategies and staying updated with the modern developments will make sure long-term success within the ever-evolving digital marketplace.
| liong |
1,878,090 | Web Development Design: A Comprehensive Guide | Web development design is a critical aspect of creating an engaging, user-friendly, and efficient... | 0 | 2024-06-05T14:01:48 | https://dev.to/andylarkin677/web-development-design-a-comprehensive-guide-3b1e | webdev, learning, career, design |
Web development design is a critical aspect of creating an engaging, user-friendly, and efficient website. It combines elements of graphic design, user interface (UI) design, user experience (UX) design, and front-end development. This comprehensive guide will explore key components and best practices in web development design, divided into three main sections: principles of good design, modern web design trends, and tools & resources for web designers.
Part 1: Principles of Good Design
1. User-Centered Design
User-centered design focuses on the needs, preferences, and limitations of end-users at every stage of the design process. Key principles include:
Usability: Ensure that the website is easy to navigate and intuitive.
Accessibility: Design for users with disabilities by following guidelines such as WCAG (Web Content Accessibility Guidelines).
Responsive Design: Make sure the website works well on various devices and screen sizes.
2. Visual Hierarchy
Visual hierarchy is the arrangement of elements in a way that implies importance. It helps users understand the structure of the page and find information quickly. Techniques to establish visual hierarchy include:
Size and Scale: Larger elements tend to attract more attention.
Color and Contrast: Use colors to highlight key areas and create contrast.
Typography: Use different fonts and styles to differentiate headings, subheadings, and body text.
3. Consistency
Consistency in design helps users feel familiar with the website, improving their overall experience. This includes:
Navigation: Keep navigation menus consistent across all pages.
Design Elements: Use consistent colors, fonts, and layouts.
Interactions: Ensure interactive elements (like buttons) behave predictably.
4. Simplicity and Clarity
Simplicity in design ensures that users are not overwhelmed with information. Clarity helps in conveying the message effectively. Tips for simplicity and clarity include:
Minimalism: Use only necessary elements.
Whitespace: Utilize whitespace to avoid clutter.
Clear Messaging: Use concise and clear language.
Part 2: Modern Web Design Trends
1. Dark Mode
Dark mode has become increasingly popular as it reduces eye strain and saves battery life on OLED screens. Designing for dark mode involves:
High Contrast: Ensure text is readable against dark backgrounds.
Consistent Branding: Adapt brand colors to work in dark mode.
2. Microinteractions
Microinteractions are small animations or design elements that provide feedback to users. Examples include:
Hover Effects: Highlighting buttons or links when hovered over.
Loading Indicators: Showing progress when content is loading.
Success/Failure Notifications: Indicating the result of user actions.
3. Neumorphism
Neumorphism is a design trend that combines skeuomorphism (design that mimics real-world objects) with modern flat design. It creates soft, extruded shapes that look like they are coming out of the background. Key aspects include:
Soft Shadows: Create depth with subtle shadows.
Consistent Lighting: Maintain a consistent light source for all elements.
Smooth Transitions: Use smooth animations for interactions.
4. Asymmetrical Layouts
Asymmetrical layouts break away from traditional grid-based designs, creating more dynamic and engaging compositions. Techniques include:
Overlapping Elements: Layering images and text.
Varied Spacing: Using different amounts of whitespace.
Unique Shapes: Incorporating non-traditional shapes and angles.
Part 3: Tools & Resources for Web Designers
1. Design Tools
Adobe XD: A powerful tool for UI/UX design and prototyping.
Sketch: A popular vector graphic editor for interface design.
Figma: A cloud-based design tool that allows for real-time collaboration.
2. Front-End Development Tools
VS Code: A versatile code editor with numerous extensions for web development.
Chrome DevTools: Built-in tools in the Chrome browser for debugging and performance testing.
Bootstrap: A CSS framework for developing responsive and mobile-first websites.
3. Design Inspiration and Resources
Dribbble: A community of designers sharing their work.
Behance: A platform to showcase and discover creative work.
Awwwards: A site that recognizes and promotes the talent and effort of the best web designers.
4. Learning Resources
MDN Web Docs: Comprehensive documentation and tutorials on web technologies.
Coursera and Udemy: Online courses on web design and development.
Smashing Magazine: Articles and books on best practices in web design.
Web development design is an ever-evolving field that blends creativity with technical skill. By understanding the principles of good design, staying updated with modern trends, and utilizing the right tools and resources, designers can create websites that are not only visually appealing but also highly functional and user-friendly. Whether you're just starting out or looking to refine your skills, this guide provides a solid foundation for excelling in web development design. | andylarkin677 |
1,878,089 | Docker Secrets Management: Safeguarding Credentials in Containerized Applications | Traditional application deployments often involve hardcoding sensitive information like API keys,... | 0 | 2024-06-05T13:59:55 | https://dev.to/platform_engineers/docker-secrets-management-safeguarding-credentials-in-containerized-applications-2621 | Traditional application deployments often involve hardcoding sensitive information like API keys, passwords, and database credentials directly within the source code or configuration files. This practice poses a significant security risk, as any unauthorized access to the codebase could expose these secrets.
Docker containers, with their ephemeral and isolated nature, introduce a new layer of complexity when it comes to managing sensitive data. While Dockerfiles can be used to inject environment variables during container build, this approach still leaves the secrets stored within the image itself, potentially accessible during image inspection.
Docker Secrets provides a secure mechanism for platform engineers to manage and inject sensitive data into containers at runtime. This functionality is particularly valuable in environments where containerized applications interact with various external services or databases.
### Understanding Docker Secrets
Docker Secrets are essentially encrypted blobs of data stored within the Docker Swarm cluster. These secrets can be created using the `docker secret create` command and can contain any type of sensitive information, such as passwords, API keys, or TLS certificates.
Here's an example of creating a Docker secret named `db_password` from a file containing the actual password:
```
$ echo "your_secure_password" > db_password.txt
$ docker secret create db_password db_password.txt
```
**Encryption:** Docker Secrets are encrypted at rest within the Swarm cluster using a cluster-specific encryption key. This ensures that even if an attacker gains access to the underlying storage, the secrets remain unreadable.
**Access Control:** Access to secrets is controlled through service labels within Docker Compose files or directly within the Swarm service definitions. Only services explicitly granted access to a specific secret can utilize its value within the container.
**Dynamic Configuration:** Docker Secrets offer a dynamic way to manage sensitive data across different environments. The same secret name can be used throughout development, testing, and production environments, with the actual value differing based on the specific environment. This simplifies configuration management and reduces the risk of accidentally exposing production credentials in non-production environments.
### Integrating Docker Secrets with Applications
There are two primary ways to integrate Docker Secrets with containerized applications:
1. **Environment Variables:** The most common approach involves injecting the secret value as an environment variable into the container at runtime. This can be achieved by referencing the secret name within the service definition or Docker Compose file.
Here's an example of a Docker Compose service referencing a secret named `db_password`:
```yaml
services:
my-app:
image: my-app-image
environment:
DB_PASSWORD: ${DB_PASSWORD_SECRET}
secrets:
DB_PASSWORD_SECRET:
source: db_password
```
Within the container, the application can then access the secret value using the standard mechanism for retrieving environment variables (e.g., `process.env.DB_PASSWORD` in Node.js).
2. **File Mounts:** In some scenarios, applications might require access to the entire secret content as a file. Docker Secrets allow mounting the secret as a volume within the container at a predefined path.
Here's an example of mounting a secret named `api_key` as a file within the container:
```yaml
services:
my-app:
image: my-app-image
volumes:
- type: secret
source: api_key
target: /path/to/api_key
read_only: true
```
The application can then access the secret content by reading the mounted file at the specified path.
### Benefits of Using Docker Secrets
* **Enhanced Security:** Docker Secrets eliminate the need to store sensitive information within container images or source code, minimizing the attack surface for potential breaches.
* **Centralized Management:** Secrets are stored and managed centrally within the Swarm cluster, simplifying access control and facilitating updates across multiple services.
* **Environment Agnostic Configuration:** Docker Secrets enable the use of the same secret name across different environments, with the actual value differing based on the deployment context.
* **Improved Platform Engineering Practices:** By decoupling sensitive information from the application code, Docker Secrets promote better platform engineering practices, leading to more secure and maintainable deployments.
### Considerations for Implementing Docker Secrets
* **Swarm Dependency:** Docker Secrets are a feature specific to Docker Swarm mode. They cannot be used directly with standalone Docker Engine instances.
* **Secret Rotation:** Regular rotation of secrets remains crucial to mitigate the impact of potential compromise. Docker Secrets themselves do not offer built-in rotation functionality, but this can be achieved through external tooling or automation scripts.
* **Access Control Granularity:** While Docker Secrets offer access control through service labels, finer-grained access control mechanisms might be necessary in specific security-critical scenarios.
| shahangita | |
1,878,088 | Pipeline Integrity and Security in DevSecOps | This is the third blog post in a series that is taking a deep dive into DevSecOps program... | 27,185 | 2024-06-05T13:58:30 | https://blog.gitguardian.com/pipeline-integrity-and-security-in-devsecops/ | devsecops, security, cybersecurity, tooling | This is the third blog post in a series that is taking a deep dive into DevSecOps program architecture. The goal of this series is to provide a holistic overview of DevSecOps as a collection of technology-driven, automated processes. Make sure to check out the first and second parts too!
At this point in the series, we have covered how to manage existing vulnerabilities and how to prevent the introduction of new vulnerabilities. We now have a software development lifecycle (SDLC) that produces software that is secure-by-design. All we have left to cover is how to enforce and protect this architecture that we’ve built.
In this article, we will be learning how to add integrity and security to the systems involved in our SDLC. These processes should be invisible to our software engineers. They should simply exist as guardrails that ensure the rest of our architecture is utilized and not interfered with.
With that in mind, I want to reiterate my DevSecOps mission statement:
“My job is to implement a secure-by-design software development process that empowers engineering teams to own the security for their own digital products. We will ensure success through controls and training, and we will reduce friction and maintain velocity through a technology-driven, automated DevSecOps architecture.”
## Threat landscape
Whenever we talk about securing something, we need to answer the question, “From what?” Threat modeling is the practice of identifying things that could go wrong based on what we are trying to protect and who/what we are protecting it from. We can’t possibly cover every scenario, but in the context of our DevSecOps architecture there are a handful of threats that we should be considering broadly.
The diagram below is a threat model of the software development process that I like a lot:
Of the threats listed above, “use compromised dependency” (Threat D) is the most challenging to mitigate. We usually have little control over the external dependencies that we use in our code. The xz utils backdoor was an eye-opening spotlight on the widespread impact that a single compromised dependency can have.
Unfortunately, malicious insiders in the open-source ecosystem are an unsolved problem at this time. Personally, I don’t think anything will improve until well-resourced consumers of open-source software become more involved in improving the security and support of their open-source dependencies.
In this article, we will be focusing on the things that we can control. For dependency threats, we can look out for malicious look-alike packages, and we can use SCA tools to identify when we are using outdated, vulnerable versions of our dependencies.
In the following sections, we will explore ways to mitigate source threats and build threats through integrity checks. Then, we will examine the assumptions we are making about the integrity checks and discuss how we can use security to build trust in those assumptions.
## Pipeline integrity
When we think about integrity in software, we often default to thinking of it as signing binaries. In our DevSecOps architecture, we go beyond verifying individual software artifacts. We need to be able to verify the integrity of our pipeline. You might be wondering, “We set up the software development pipeline ourselves… Why would we need to verify its integrity?” It turns out that the assumptions we make about our SDLC can be wrong. We have security gates, but that doesn’t guarantee that we have no gaps.
In software development environments, there are usually ways to skip steps or bypass controls. For one, it’s common for software engineers to be able to publish artifacts like container images directly to our registry. Even innocent intentions can help vulnerabilities slip around security checks that would have otherwise caught them. In a worse scenario, a compromised developer account could allow a threat actor to push backdoored packages directly to our registry.
To verify that our software artifacts are the product of the DevSecOps systems that we have in place, we must improve the integrity of our software development pipeline.
### Branch protection
One of the most important controls in our software development pipeline is branch protection. Branch protection rules protect our integrity against the source threats in our threat model (Figure 1).
By requiring a Pull Request (PR) to merge code into our production branch, we are ensuring that humans are authorizing changes (Threat A) and verifying that the source code is free from vulnerabilities and backdoors (Threat B). We can also trigger automatic builds when there are changes to our production branch, which will produce builds that come from the source code that has been reviewed (Threat C).
### Reproducible builds
In the Solarwinds supply chain attack, it was the compromise of Solarwinds’ build servers that led to the injection of the Sunburst backdoor. Injecting malicious code late in the software development pipeline is an effective way to reduce the chance that a human will catch the backdoor.
In the long run, the best mitigation strategy we have against compromised builds (Threat E) is to make our software builds reproducible. Having reproducible builds means that we can run the same steps against the same source code on a different system and end up with the exact same binary result. We would then have a way to verify that a binary was not tampered with. If we rebuilt and the resulting binary was different, it would raise some questions and warrant investigation.
### Artifact signing
Signing software has been a common practice for a long time because it provides a way for consumers to verify that the software came from us. This protects software consumers even if our package registry is compromised (Threat G).
Unfortunately, this still leaves us with a lot of assumptions because a binary signature doesn’t say anything about how the software was built. For example, a software engineer or threat actor might have write access to our container registry and the ability to sign container images. By pushing a locally built container image directly to our registry, they would still be bypassing the automated checks and human reviews that happen in our PRs.
### SLSA framework
To provide a way for us to verify how and where a piece of software was built, the Open Source Security Foundation (OpenSSF) created the Supply-chain Levels for Software Artifacts (SLSA) framework. What does SLSA do for us in practice? If we reuse the earlier example of a software engineer pushing a container directly to our registry, we could have a verification step before deployment that would detect that the container wasn’t built in our CI pipeline.
SLSA ranks our software build process on a 0-3 scale to determine how verifiable it is. A whole article could be written about SLSA, but to keep things short, here is a summary of the 4 levels and what they aim to protect against:
**Level 0** – Nothing is done to verify the build process. We don’t have any way to verify who built the software artifact nor how they built it.
**Level 1** – Software artifacts are distributed with a provenance that contains detailed information about the build process. Before using or deploying the software, we can use the information in the provenance to make sure that the components, tools, and steps used in the build are what we expect.
**Level 2** – The provenance is generated at build time by a dedicated build platform that also signs the provenance. Adding a signature to the provenance allows us to verify that the documentation came from our build platform and hasn’t been forged nor tampered with.
**Level 3** – The build platform is hardened to prevent the build process from having access to the secret used to sign the provenance. This means that a tampered build process cannot modify the provenance in a way that would hide its anomalous characteristics.
At SLSA level 3, we have a way to verify that we aren’t falling for build threats E-H in our threat model (Figure 1). However, you might notice that we start placing some trust in the build platform to be hardened in an adequately secure way.
Trust in the platforms that make up our SDLC is one of the guiding principles of SLSA. The purpose of SLSA is to verify that our software artifacts came from the expected systems and processes rather than individuals with write access to our package registries. How do we build trust in the systems that produce our software? By securing them.
## Pipeline security
Our DevSecOps architecture is technology-driven, which means there are multiple systems that compose our software development pipeline. At this point in our DevSecOps journey, we have confidence that our SDLC is producing reasonably secure software, and we have ways to verify that our pipeline is being used and not skipping steps. The final threat we have to deal with is the compromise of our deployed services or the systems involved in our software development pipeline.
### Securing development systems
If a system involved in development or CI gets compromised by a threat actor, they may be able to inject backdoors into our software, steal secrets from our development environment, or even steal data from the downstream consumers of our software by injecting malicious logic. It’s common for us to put a lot of energy into securing the production systems that we deploy our software to, but we need to treat the systems that build our software like they are also production systems.
### Workstation security
On the “left” side of our SDLC, our developers are writing code on their workstations. This isn’t an article about enterprise security, but endpoint protection solutions such as antivirus and EDR play an important role in securing these systems. If we are concerned about our source code being leaked or exfiltrated, we might also consider data-loss prevention (DLP) tools or user and entity behavior analytics (UEBA).
### Remote development
If we want to go a step further in protecting our source code, we can create remote development environments that our developers use to write the code. Development tools like Visual Studio Code and Jetbrains IDEs support connecting to remote systems for remote development. This is not the same thing as dev containers which can run on our local host. Remote development refers to connecting our IDE to a completely separate development server that hosts our source code.
This isolation of the software development process separates our source code from high-risk activity like email and browsing the internet. We can combine remote development with a zero-trust networking solution that requires human verification (biometrics, hardware keys, etc) to connect to the remote development environment. If a developer’s main device gets compromised, remote development makes it much harder to steal or tamper with the source code they have access to.
Remote development obviously adds friction to the software development process, but if our threat model requires it, this is a very powerful way to protect our source code at the earliest stages of development.
### Build platform hardening
The SolarWinds supply chain attack that we covered earlier is a prime example of why we need to treat build systems with great scrutiny. Reproducible builds are a way to verify the integrity of our build platform, but we still want to secure these systems to the best of our ability.
Similarly to workstation security, endpoint protection and other enterprise security solutions can help monitor and protect our build platform. We can also take additional steps like limiting administrator access to the build platform and restricting file system permissions.
### Securing deployment systems
If our software is deployed as a service for others to use, we need to make sure that we are securing our deployment systems. A compromised service can leak information about our users and allow a threat actor to pivot to other systems.
### Zero-trust networking
A powerful control against the successful exploitation of our applications is restricting outbound network access. Historically, it’s been very common for public-facing applications to be in a DMZ, a section of our internal network that can’t initiate outbound network connections to the internet or any other part of our network (except for maybe a few necessary services). Inbound connections from our users are allowed through, but in the event of a remote code execution exploit, the server is unable to download malware or run a reverse shell.
If we use Kubernetes for our container workloads, we can utilize modern zero-trust networking tools like Cilium to connect our services and disallow everything else. Cilium comes with a UI called Hubble that visualizes our services in a diagram to assist us in building and troubleshooting our network policies.
### Privilege dropping and seccomp
If we run our services inside Linux containers, we can easily limit their access to various system resources. Seccomp is a Linux kernel feature that works with container runtimes to restrict the syscalls that can be made to the kernel. By default, most container deployments run using “Unconfined” (seccomp disabled) mode.
At a minimum, we can use the “RuntimeDefault” seccomp filter in Kubernetes workloads to utilize the default seccomp profile of our container runtime. Here is an example of the syscalls blocked by Docker’s default seccomp filter. The list of syscalls in a default filter are typically blocked to prevent privilege escalation from the container to the host. There may be certain low-level or observability workloads that do need to run “unconstrained,” but in general, the default seccomp filter is intended to be safe for most applications.
If we wanted to be even more restrictive, we could create our own seccomp filters that only allow the syscalls needed by our application. In some cases, restricting syscalls at this level could even prevent the successful exploitation of a vulnerable system. I did a talk on this back in 2022 that explains how to automate the creation of seccomp allowlist filters in a way that fits nicely into existing DevOps workflows. Be aware, however, that seccomp allowlist filters can introduce instability into our application if we aren’t performing the necessary testing when creating the filter.
### Container drift monitoring
Another powerful security feature that container deployments enable is container drift monitoring. Many container applications are “stateless,” which means that we wouldn’t expect them to be changing in any way. We can take advantage of this expectation and monitor our stateless containers for any drift from their default state using tools like Falco. When a stateless container starts doing things that it wouldn’t normally do, it could indicate that our app has been exploited.
## Identity
Lastly, let’s look at a few identity-related practices that can meaningfully improve the security of the systems in our software development pipeline.
### Secrets management
There is a lot of complexity in DevSecOps around identity and access management because we are dealing with both human and machine identities at multiple stages of our SDLC. When our services talk to one another, they need access to credentials that will let them in.
Managing the lifecycle of these credentials is a bigger topic than what we will be covering here, but having a strategy for secret management is one of the most important things we can do for the security of the systems in our SDLC. For detailed advice on this topic, check out GitGuardian’s secret management maturity model whitepaper.
### Leaked secret prevention
No matter how mature our secret management process is, secrets always seem to find a way into places they shouldn’t be. Whether they are in source code, Jira tickets, chats, or anywhere else, it’s impossible to prevent all our secrets from ever being exposed. For that reason, it’s important to be able to find secrets where they shouldn’t be and have a process to rotate leaked secrets so they are no longer valid.
### Honeytokens
Leaked secrets are a very sought-after target for threat actors because of their prevalence and impact. We can take advantage of this temptation and intentionally leak special secrets called honeytokens that would never be used except by malicious hackers that are looking for them. By putting honeytokens in convincing locations like source code and Jira tickets, we are setting deceptive traps with high-fidelity alerts that catch even the stealthiest attackers.
### Others
We could list more ways to secure our infrastructure, but, like I said earlier, this isn’t an article about enterprise security. The topics we covered were included because of the special considerations we must take in the context of the software development environment.
Ultimately, collaboration between product and enterprise security is an important factor in protecting the integrity of our DevSecOps architecture. It is our collective duty to prevent threats from impacting us and those downstream who use our software products.
## Conclusion
DevSecOps architecture is driven by the technologies involved in the development process. Securing these systems builds trust in our software development pipeline, and adding ways to verify the integrity of our pipeline is what ultimately allows us to mitigate many of the supply-chain threats that we and our customers face.
There will always be new things to learn and new ways to iterate on these strategies. The DevSecOps architecture described in this series is meant to provide a holistic and modern approach to application security that can be built upon. I hope that you are leaving with goals that will set your development teams up for success in securing their digital products. | segudev |
1,878,083 | Thrive as a Junior Engineer: Embrace Deliberate Progress | In the fast-paced world of software engineering, the pressure to deliver results quickly can be... | 0 | 2024-06-05T13:46:40 | https://dev.to/alexroor4/thrive-as-a-junior-engineer-embrace-deliberate-progress-5bnn | webdev, beginners, javascript, devops | In the fast-paced world of software engineering, the pressure to deliver results quickly can be overwhelming, especially for junior engineers. However, the key to long-term growth and success may lie in taking a more deliberate approach. The idea of "working slower to grow faster" is about focusing on understanding and quality, rather than speed.
Understanding the Importance of Deliberate Progress
As a junior engineer, it’s easy to get caught up in the race to deliver features rapidly. While quick results can be satisfying in the short term, they often come at the expense of deeper understanding and long-term growth. By slowing down and taking the time to fully understand the problems you're solving, you build a stronger foundation for your future work.
Key Strategies for Deliberate Progress
Deep Learning: Take the time to thoroughly understand the technologies and concepts you're working with.
Don’t just skim through documentation or tutorials – delve deeply and ask questions.
Quality Over Quantity: Focus on writing clean, maintainable code. Prioritize quality in your work to avoid technical debt and future rework.
Seek Feedback: Regularly ask for feedback from more experienced colleagues. Constructive criticism can highlight areas for improvement and help you grow faster.
Reflect and Iterate: After completing tasks, reflect on what you learned and how you can improve. Iterative learning is key to becoming a proficient engineer.
Balance Speed with Thoughtfulness: While meeting deadlines is important, balancing speed with a thoughtful approach ensures sustainable progress and prevents burnout.
Benefits of a Deliberate Approach
Stronger Foundation: By thoroughly understanding concepts, you create a solid foundation for tackling more complex problems in the future.
Better Problem-Solving Skills: Taking the time to deeply understand issues enhances your problem-solving abilities.
Higher Quality Work: Focusing on quality reduces the likelihood of bugs and technical debt, leading to more reliable and maintainable code.
Sustainable Growth: A deliberate pace helps prevent burnout and promotes steady, continuous improvement.
Conclusion
As a junior engineer, adopting a deliberate approach to your work can set you apart. By focusing on deep learning, quality, and reflection, you lay the groundwork for rapid growth in your career. Remember, sometimes you need to slow down to ultimately move faster. | alexroor4 |
1,878,082 | Roadmap Backend Tahun 2024 | Gimana menurut kalian? ada yg kurang gak hehe😁 src: @code.clash Yuk belajar bareng serta diskusi... | 0 | 2024-06-05T13:46:01 | https://dev.to/appardana/roadmap-backend-tahun-2024-21l6 | webdev, javascript, beginners, backenddevelopment | Gimana menurut kalian? ada yg kurang gak hehe😁
src: @code.clash
Yuk belajar bareng serta diskusi dikolom komentar, serta di save biar ga lupa💬😝
📬DM for Business
🌱Follow : @appardana🎍
💭Stay Young, Be Innovative and Keep Learning
#coding #programmer #code #Content #Tips #Trick #Knwoledge #Management #CSS #React #ReactJS #Frontend #JustifyContent #Javascript #Phyton #C #Web #Skills #IT #Backend #Developer #Roadmap #SelfImprovement #Growth #Aditria #Pardana #AditriaPardana #appardana #iAppTech ⚛️
 | appardana |
1,878,081 | Karyam: Simplest everyday writing app | What is the most simple thing any writing app should have is to write every day, write every... | 0 | 2024-06-05T13:44:50 | https://dev.to/shreyvijayvargiya/karyam-simples-everyday-writing-app-489m | product, webdev, programming, news | What is the most simple thing any writing app should have is to write every day, write every day.
Demo: [https://karyam.vercel.app/](https://karyam.vercel.app/)
## Under the Hood
I am asking myself a lot of questions about designing or making an app that is simple but designing a website and interface is just a few inches away from making it all complicated
Add a few more directions or a school of thought in your app design and things start getting complex.
I was reading [Brian's 12 Weeks in a Year](https://www.amazon.in/12-Week-Year-Others-Months/dp/1118509234), where he helped strategise the 12-week plan as a complete year instead of 12 months and then set the targets accordingly.
The strategy is closer to what Elon suggested a few years back(not sure about the year), “Do what you have planned for a year in 6 months and compress it down to accomplish it within 3 months”.
My opinion might be wrong and pardon me in advance.
Moving back to the story, why Karyam?
## Karyam
Karyam is the simplest everyday writing app (for the time being). The idea was simple to give a new doc or writing editor every day and save and view all my writings in one place.
I’ve added a few more things as personal choices as follows
- Google login
- Realtime save
- View all writings in one place
- Export my content into different output formats such as HTML, PDF, Markdown
- Make it public (for others to read)
Simple yet advanced editor meaning it should have all core functions and UI components to add
Personal choices might sound too much but this is the basic need for every writing app and one can argue for not adding GPT or AI-powered features to make it modern.
## Want a demo:
[https://karyam.vercel.app/](https://karyam.vercel.app/)
You need to log in(Google Login) before using it because (privacy is a myth, my friend)
I have been using it for the past few months and I am quite confident about using and writing on karyam.
Here are a few reasons why Karyam is so better(at least in my opinion)
- Advanced [Notion](http://notion.so/) and [Google Doc](https://docs.google.com/document/create) writing editor
- Incorporated all required features any writing app should have
- Save, Share and Export easily in other formats
## How I am using Karyam
Well, this is my app so certainly I would try to use it for all purposes and the main reason is to witness all the required features to add as well as pain points to address.
Certainly, karyam is not for all kinds of people but I made it simple so that every day one starts and uses it.
Simple Google login with simple real-time save as well view all karyams in one place.
Here is where I am using it Karyam
- To write daily journalling whenever needed (Karyam is published on this link)
- To add my to-do (karyam can be used in a phone browser as well, it’s response)
- To write the newsletter and send HTML via API (write on the editor and export the content in HTML format and send it using backend API)
- To write blogs and convert the content for multiple platforms such as Medium, DevTo, Hashnode and so on
- To share something randomly or daily notes or anything with anyone(Make karyam public in export settings and anyone can read your karyam)
karyam app page image
One can predict that I made Karyam incorporate the above 4 requirements in one app.
## What’s Next!!
Here is the feedback form to submit the next feature request.
[https://karyam.vercel.app/feedback](https://karyam.vercel.app/feedback)
Currently, I am brainstorming what’s next can be done so stay tuned to this newsletter to know more.
But to give hints, I am thinking of adding small yet useful features such as
- HTML editor (Design the content HTML according to your need and send it as a Newsletter)
- Write multiple notes per day (Currently one one editor per day is available)
## Development Stack
If you read my previous blogs, you can guess my favourite or 2024 tech stack.
- Next.js + React.js
- Tailwind CSS
- Mantine Dev or ShadcnUI
- React Query
- Firebase or Supabase
- Redux or Xstate
- Vercel or Netlify
- Github or Git
Here is the [boilerplate](https://github.com/shreyvijayvargiya/Personal-Blog-Starter) to use
That’s it
See you in the next one
Shrey | shreyvijayvargiya |
1,878,079 | Mastering the Art of EHR Software Development | In today's rapidly evolving healthcare landscape, Electronic Health Records (EHRs) have emerged as a... | 0 | 2024-06-05T13:42:41 | https://dev.to/techdud_71ca45195a2c/mastering-the-art-of-ehr-software-development-f11 | In today's rapidly evolving healthcare landscape, Electronic Health Records (EHRs) have emerged as a pivotal component, revolutionizing the way medical data is managed, shared, and utilized. As the demand for efficient and secure digital solutions continues to soar, the development of robust EHR systems has become a top priority for healthcare organizations worldwide.
EHRs, at their core, are digital repositories that house a wealth of patient information, including medical histories, diagnoses, treatment plans, test results, and prescriptions. By consolidating this data into a centralized, easily accessible platform, EHRs streamline clinical workflows, enhance care coordination, and facilitate informed decision-making.
However, the true power of EHRs extends far beyond mere data storage. These sophisticated systems offer a myriad of features and functionalities designed to optimize healthcare delivery, improve patient outcomes, and drive operational efficiencies. From e-prescribing and lab integration to appointment scheduling and billing management, EHRs have become indispensable tools for healthcare providers, patients, and administrators alike.
## Exploring the Multifaceted Benefits of EHRs
The adoption of EHRs has ushered in a new era of healthcare, offering a multitude of benefits that resonate across various stakeholders. For healthcare providers, these systems serve as a comprehensive, real-time window into a patient's medical journey, enabling seamless care coordination and informed decision-making. By consolidating disparate data sources into a unified platform, EHRs eliminate the need for cumbersome paper records, reducing the risk of errors and enhancing overall efficiency.
Furthermore, EHRs empower healthcare professionals with advanced clinical decision support tools, alerting them to potential drug interactions, contraindications, or critical lab values. This proactive approach not only enhances patient safety but also fosters a culture of preventive care, ultimately improving health outcomes.
From a patient's perspective, EHRs represent a gateway to personalized, convenient, and transparent healthcare experiences. With secure online portals, individuals can access their medical records, track test results, request prescription refills, and communicate directly with their healthcare providers. This level of engagement encourages patients to take an active role in their healthcare journey, fostering a sense of empowerment and accountability.
Moreover, EHRs play a pivotal role in advancing medical research and population health initiatives. By aggregating de-identified patient data, researchers can uncover valuable insights, identify trends, and develop targeted interventions, ultimately driving innovation and improving public health outcomes.
## Navigating the EHR Development Landscape
The development of a robust and tailored EHR system is a complex undertaking that requires a deep understanding of the healthcare industry's nuances, regulatory requirements, and technological advancements. While off-the-shelf solutions may seem appealing, they often fail to address the unique needs and workflows of individual healthcare organizations, leading to inefficiencies and potential compliance issues.
To unlock the full potential of EHRs, healthcare organizations are increasingly turning to custom software development solutions. By partnering with experienced EHR development teams, these organizations can create tailored systems that seamlessly integrate with existing infrastructure, align with specific clinical workflows, and adapt to evolving regulatory frameworks.
## Defining the Roadmap: Key Stages of EHR Development
Embarking on an EHR development journey requires a well-defined roadmap that encompasses several critical stages, each designed to ensure the successful delivery of a high-quality, secure, and user-friendly solution. Let's delve into the key phases of this transformative process.
## 1. Ideation and Requirements Gathering
The first step in the EHR development process is to validate the idea and gather comprehensive requirements from stakeholders. This phase involves conducting in-depth interviews, workshops, and site visits to understand the organization's unique needs, pain points, and desired outcomes. By fostering open communication and collaboration, developers can gain invaluable insights into clinical workflows, data management practices, and user preferences, laying the foundation for a truly tailored solution.
## 2. Prototyping and User Experience Design
Once the requirements have been clearly defined, the development team will create a functional prototype that serves as a tangible representation of the envisioned EHR system. This iterative process allows stakeholders to provide feedback, identify areas for improvement, and ensure that the user experience aligns with their expectations. User experience (UX) designers play a crucial role in this stage, crafting intuitive interfaces that prioritize usability, accessibility, and efficiency.
## 3. Architecture and Technology Stack Selection
Choosing the right technology stack is paramount to the success of an EHR development project. Experienced developers will evaluate various programming languages, frameworks, databases, and cloud platforms to create a robust and scalable architecture that meets the organization's current and future needs. Factors such as performance, security, interoperability, and compliance requirements will guide these critical decisions.
## 4. Agile Development and Continuous Integration
To ensure a seamless and iterative development process, most EHR projects adopt an Agile methodology, which emphasizes collaboration, flexibility, and continuous improvement. Through a series of sprints, developers incrementally build, test, and refine the system's features, incorporating feedback from stakeholders and addressing any emerging challenges or requirements.
Continuous integration practices, such as automated testing and deployment pipelines, further streamline the development process, ensuring that code changes are regularly integrated, tested, and deployed, minimizing the risk of errors and enhancing overall quality.
## 5. Data Migration and Integration
One of the most critical aspects of EHR development is the seamless migration and integration of existing patient data. Developers must implement robust strategies to securely transfer historical records from legacy systems, ensuring data integrity, privacy, and compliance with industry standards. Additionally, integrating the EHR system with external systems, such as [laboratory information systems](https://www.orchardsoft.com/resources/learn-about-lis/) (LIS) and picture archiving and communication systems ([PACS](https://www.techtarget.com/searchhealthit/definition/picture-archiving-and-communication-system-PACS#:~:text=Picture%20archiving%20and%20communication%20system%20(PACS)%20is%20a%20medical%20imaging,images%20and%20clinically%2Drelevant%20reports.)), is essential for enabling efficient data exchange and enhancing clinical decision-making.
## 6. Testing and Quality Assurance
Rigorous testing and quality assurance processes are paramount in the development of EHR systems, as they directly impact patient safety and organizational compliance. Dedicated quality assurance teams will conduct comprehensive testing, including functional, usability, performance, security, and compliance testing, to identify and address any potential issues or vulnerabilities. This iterative process ensures that the final product meets the highest standards of quality, reliability, and security.
## 7. Deployment and Training
Once the EHR system has undergone thorough testing and validation, it is ready for deployment within the healthcare organization. This stage involves careful planning, coordination, and communication to ensure a smooth transition from legacy systems to the new EHR platform. Comprehensive training programs are essential to equip healthcare professionals, administrative staff, and end-users with the knowledge and skills required to effectively utilize the new system, maximizing its potential and facilitating widespread adoption.
## 8. Ongoing Maintenance and Support
The development journey does not end with deployment; ongoing maintenance and support are crucial to ensuring the long-term success and effectiveness of the EHR system. As healthcare regulations evolve, new technologies emerge, and user needs change, the EHR system must adapt and evolve accordingly. Dedicated support teams provide regular updates, security patches, and enhancements, ensuring that the system remains compliant, secure, and aligned with the organization's evolving needs.
## Crafting a Comprehensive Feature Set
A well-designed EHR system should encompass a robust set of features that cater to the diverse needs of healthcare providers, patients, and administrators. While the specific feature set may vary based on the organization's requirements, there are several core components that are essential for any successful EHR implementation.
## Patient Portal and Personal Health Records
The patient portal serves as a central hub for individuals to access and manage their personal health information. Through this secure online platform, patients can view their medical records, test results, medication lists, and appointment schedules. Additionally, they can communicate directly with their healthcare providers, request prescription refills, and update their personal information, fostering a more engaged and empowered patient experience.
## E-Prescribing and Medication Management
E-prescribing is a critical component of modern EHR systems, enabling healthcare providers to electronically transmit prescription orders to pharmacies, reducing the risk of errors and improving medication safety. Advanced medication management features, such as drug interaction checking, allergy alerts, and dosage calculations, further enhance patient safety and support informed decision-making.
## Clinical Documentation and Charting
Streamlining clinical documentation is a key benefit of EHR systems. Healthcare providers can efficiently document patient encounters, progress notes, and treatment plans within the system, eliminating the need for handwritten notes and ensuring accurate and legible records. Advanced features like voice recognition, customizable templates, and intelligent data capture further enhance the documentation process.
## Order Entry and Results Management
EHR systems facilitate the efficient management of orders for laboratory tests, imaging studies, and other diagnostic procedures. Healthcare providers can seamlessly place orders, track their status, and receive results directly within the system, enabling timely decision-making and enhancing care coordination.
## Care Plan Management and Decision Support
Care plan management tools within EHR systems enable healthcare providers to develop and monitor personalized treatment plans for their patients. Clinical decision support features, such as evidence-based guidelines, best practice alerts, and clinical pathways, further enhance the quality of care by providing real-time guidance and recommendations based on the latest medical knowledge.
## Population Health Management
By aggregating and analyzing de-identified patient data, EHR systems can support population health management initiatives. Healthcare organizations can identify trends, monitor disease patterns, and develop targeted interventions to improve the overall health of specific populations, promoting preventive care and addressing health disparities.
## Interoperability and Health Information Exchange
Seamless data exchange and interoperability are critical components of modern EHR systems. By adhering to industry standards and leveraging technologies like application programming interfaces (APIs), EHR systems can securely share patient information with other healthcare providers, laboratories, and health information exchanges (HIEs), fostering coordinated care and enhancing overall efficiency.
## Revenue Cycle Management and Billing
EHR systems often integrate revenue cycle management and billing functionalities, streamlining the financial aspects of healthcare delivery. Features such as automated coding, claim submission, and payment tracking help organizations optimize their revenue streams, reduce administrative burdens, and enhance overall financial performance.
## Analytics and Reporting
Data-driven decision-making is essential in the healthcare industry, and EHR systems play a vital role in providing valuable insights through advanced analytics and reporting capabilities. Healthcare organizations can leverage these tools to monitor performance metrics, identify areas for improvement, and make informed strategic decisions based on real-world data.
## Ensuring Compliance and Security
Compliance and security are paramount considerations in the development of EHR systems, as they directly impact patient privacy, data integrity, and organizational reputation. Developers must navigate a complex landscape of regulations and standards, including the Health Insurance Portability and Accountability Act (HIPAA) in the United States, the General Data Protection Regulation (GDPR) in the European Union, and various industry-specific guidelines.
To ensure compliance, EHR systems must incorporate robust security measures, such as encryption, access controls, audit trails, and secure authentication mechanisms. Regular risk assessments, vulnerability testing, and penetration testing are essential to identify and mitigate potential security vulnerabilities.
Furthermore, developers must implement stringent data privacy and consent management protocols, ensuring that patient information is handled with the utmost care and in accordance with applicable regulations. This includes implementing granular access controls, enabling patients to grant or revoke consent for data sharing, and adhering to strict data retention and disposal policies.
## Leveraging Emerging Technologies
The healthcare industry is constantly evolving, and the development of EHR systems must keep pace with emerging technologies to remain competitive and deliver cutting-edge solutions. By embracing innovative technologies, developers can enhance the capabilities of EHR systems, streamline workflows, and unlock new opportunities for improved patient care.
## Artificial Intelligence and Machine Learning
The integration of artificial intelligence (AI) and machine learning (ML) technologies into EHR systems holds immense potential. AI-powered clinical decision support systems can analyze vast amounts of patient data, identify patterns, and provide personalized treatment recommendations, improving diagnostic accuracy and treatment outcomes. Additionally, natural language processing (NLP) techniques can streamline clinical documentation by enabling voice-to-text transcription and automated coding.
## Internet of Things (IoT) and Wearable Devices
The Internet of Things (IoT) and wearable devices are revolutionizing healthcare by enabling remote patient monitoring and data collection. EHR systems can seamlessly integrate with these devices, capturing real-time data on vital signs, activity levels, and other health metrics, providing healthcare providers with a comprehensive view of a patient's health status and enabling proactive interventions.
## Blockchain and Distributed Ledger Technologies
Blockchain and distributed ledger technologies offer promising solutions for secure and transparent data management in healthcare. By leveraging these technologies, EHR systems can ensure data integrity, enable secure data sharing among authorized parties, and create immutable audit trails, enhancing trust and accountability within the healthcare ecosystem.
## Telehealth and Remote Care
The COVID-19 pandemic has accelerated the adoption of telehealth and remote care solutions, enabling healthcare providers to deliver virtual consultations, monitor patients remotely, and provide continuity of care. EHR systems that integrate telehealth functionalities can streamline these processes, facilitate secure data exchange, and enhance the overall patient experience.
## Cloud Computing and Scalability
Cloud computing has become a cornerstone of modern software development, offering scalability, cost-effectiveness, and enhanced accessibility. By leveraging cloud platforms, EHR systems can be deployed and scaled rapidly, enabling healthcare organizations to adapt to changing demands and accommodate growth without the need for extensive on-premises infrastructure.
## Fostering Collaboration and User Adoption
The success of an EHR system hinges not only on its technical capabilities but also on the effective collaboration between developers, healthcare professionals, and end-users. Fostering a collaborative environment throughout the development process is crucial for ensuring that the system meets the unique needs and workflows of the organization.
User adoption is another critical factor that determines the long-term success of an EHR implementation. Developers must prioritize user-centered design principles, creating intuitive interfaces and workflows that align with the existing practices of healthcare professionals. Comprehensive training programs, ongoing support, and continuous user feedback loops are essential for promoting widespread adoption and maximizing the system's potential.
## Renowned EHR Software Solutions
The EHR software market is teeming with a diverse array of solutions, each tailored to meet the specific needs of various healthcare organizations. While a comprehensive list would be extensive, here are some renowned EHR software solutions that have garnered widespread recognition:
Epic Systems: [Epic](www.epic.com) is a leading provider of healthcare software, with its EHR system being widely adopted by large healthcare organizations and academic medical centers.
Cerner: [Cerner's](www.Cerner.com) EHR solution is known for its comprehensive feature set, including clinical documentation, revenue cycle management, and population health management tools.
Allscripts: Offering a range of EHR solutions for various healthcare settings, Allscripts is renowned for its user-friendly interfaces and robust interoperability capabilities.
Ambula Health: [Ambulahealth](www.ambula.io) is a cloud-based EHR system that caters to ambulatory care settings, with a strong focus on practice management and revenue cycle optimization.
Athenahealth: [Athenahealth's](www.Athenahealth.com) EHR solution is known for its seamless integration with practice management and revenue cycle management tools, as well as its strong emphasis on usability and mobility.
NextGen Healthcare: NextGen Healthcare offers EHR solutions tailored for various healthcare settings, including ambulatory care, behavioral health, and specialty practices.
Greenway Health: Greenway Health's EHR platform is designed for ambulatory care settings, with a focus on streamlining clinical workflows and enhancing patient engagement.
Practice Fusion: Practice Fusion is a cloud-based EHR system that offers a free version for small practices, as well as more comprehensive paid plans with advanced features.
It's worth noting that many of these renowned EHR software solutions are developed using a combination of programming languages and frameworks, such as Java, C#, Python, React, Angular, and Node.js. Additionally, some solutions may leverage machine learning models and natural language processing techniques to enhance their capabilities.
Embracing the Future of Healthcare Technology
The development of EHR systems is an ever-evolving journey, one that requires a deep understanding of the healthcare industry, a commitment to innovation, and a relentless pursuit of excellence. As technology continues to reshape the healthcare landscape, developers must remain agile, adaptable, and forward-thinking, embracing emerging trends and technologies to deliver solutions that transcend mere record-keeping.
By fostering collaboration, prioritizing user experience, and leveraging cutting-edge technologies, developers can create EHR systems that not only streamline clinical workflows but also empower patients, drive population health initiatives, and unlock new frontiers in personalized medicine.
The future of healthcare lies in the seamless integration of digital technologies, data-driven insights, and human-centric design. EHR systems stand at the forefront of this transformation, serving as the backbone for a more efficient, coordinated, and patient-centric healthcare ecosystem. As we navigate this exciting journey, developers play a pivotal role in shaping the future of healthcare, one line of code at a time.
| techdud_71ca45195a2c | |
1,878,066 | Mike: learning: First steps | About me Hello, I'm Mike. I recently started working at Manticore as a Developer... | 0 | 2024-06-05T13:42:21 | https://dev.to/anstalf/mike-learning-first-steps-5g4k | ### About me
Hello, I'm Mike.
I recently started working at Manticore as a Developer Advocate. I am someone not completely distant from IT, but I'm catching up with modern technologies. In this blog, I'll share my experiences and what I learn about Manticore. I plan to document my journey in a diary format, explaining what Manticore is and how to use it. Let's discover how things work together, identify issues, and engage with developers in real time.
This is my first blog post. If you are interested in learning about Manticore with me, I will keep you updated in:
<ul>
<li>
<a href="https://twitter.com/manticoresearch">Twitter</a>
</li>
<li>
Telegram: <a href="https://t.me/manticoresearch_en">EN</a> / <a href="https://t.me/manticore_chat">RU</a>
</li>
<li>
<a href="https://slack.manticoresearch.com/">Slack</a>
</li>
</ul>
### A few words about Manticore
As I started learning about Manticore Search, I found out it's a powerful open-source database. It can do fast full-text searches using both SQL and JSON, and much more. It was created in 2017 and has been tested and improved a lot since then. Thanks to a strong community, many bugs have been fixed, and it works very well now.
Manticore is great for quickly finding words, phrases, and sentences, and it has many other advanced features. This makes it perfect for things like online stores and enterprise search systems. With lots of helpful features and support from the community and Manticore Software's team, it's easy to see why many people choose Manticore for their search needs.
In this article, I'll show you how to get started with Manticore
### Where to start
#### Minimal environment
* Internet
* Not too old OS (Mac, Win or Lin - it doesn’t matter)
* Docker or Docker Desktop.
* Relatively straight arms
* A strong desire to make the world better by creating high-quality, easy-to-use software with fast databases and search systems for full-text information.
#### Tools
* Console (or you can use Docker Desktop to connect to the container)
* File manager (optional, I like [Midnight Commander](https://midnight-commander.org))
* Text editor for the console (for example, mcedit, nano, vim). In the examples, we will use the editor built into Midnight Commander, mcedit, to avoid needing to look up exit commands for vim.
*When using MC, you don't need to install an editor, since the built-in one is enough. If an additional editor has been installed, the first time the [F4 Edit] command is executed, MC will prompt you to select the desired one. The example will use the built-in MC editor, which is called by pressing [F4] when a file is selected in the interface or using the mcedit <file name to create/open> command.*
> The quicker way is to do everything from the command line. [I want it quick!](#cli_manticore_docker)
#### Infrastructure deployment
We will conduct experiments with Manticore in a Docker container, as this is a popular cross-platform solution and is often used in an environment where Manticore is most in demand, although there are versions of the database for all popular operating systems.
*Those pros who already know how to work with docker can skip it until the container is launched. Well, the newcomers and I will go through the steps of starting from scratch.*
To begin, you must complete the following steps:
1. Download Docker Desktop for our platform from the website [https://www.docker.com/](https://www.docker.com/products/docker-desktop/):
2. After installation, we need to grab the official Manticore image. In the top bar of the app, there's a search bar. Just type "ManticoreSearch" into that.
3. In the output, we have the "manticoresearch/manticore".
4. Click on the "pull" button, then switch to the images tab.
5. And then we select the new image we just downloaded and click "play".
In the window that pops up, you need to enter some extra settings:
- Name of the container: `manticore`.
- For the ports, let's just use the same port as the database for simplicity, which is `9306`.
- In the environment variables, set the variable `EXTRA` with the value `1`. This is required for running supplementary components that are very useful. Learn more about it [here](https://github.com/manticoresoftware/docker/tree/docker-6.2.12?tab=readme-ov-file#manticore-columnar-library-and-manticore-buddy).
And then click "Run"
Next, go back to the container tab. We'll find our container in the list of active containers. In the dropdown menu, there's an "Open in terminal" option. A window will pop up with a terminal that's directly connected to your container.
Congrats, you've successfully installed Manticore Search docker image on your computer.
<a id="cli_manticore_docker"></a>
> After messing around with the Docker Desktop interface for a while, you realize that the quickest way to get things done is through the command line.
> <code>docker run -e EXTRA=1 \-\-name manticore -p 9306:9306 -d manticoresearch/manticore</code>
> <code>docker exec -it manticore /bin/sh</code>
6. To make things easier, we'll be installing the Midnight Commander file manager inside the container:
```bash
apt update
apt install mc
mc
```
So, we updated the "apt" package manager, then we installed the "mc" file manager and launched it.
Now, your terminal should look like this:
### First step. First table.
Alright, let's connect to the database and make our first table.
```bash
mysql -h0 -P9306
```
*Here is the `-h` flag for the host connection, set to `0` because we are trying to connect to localhost. Use the `-P` flag (note the uppercase P) for the port connection; we are using the internal port number.*
Let's create a table with an "info" field as text and a "value" field as an integer. Additionally, let's enhance this table with a stemmer for English words.
```sql
CREATE TABLE demo (info TEXT, value INT) morphology = 'stem_en';
Query OK, 0 rows affected (0.00 sec)
```
To see what fields were created when you created or altered a table column, use the `desc` command (it's like a "description").
```sql
DESC demo
+-------+-----------+------------------+
| Field | Type | Properties |
+-------+-----------+------------------+
| id | bigint | |
| info | text | indexed stored |
| value | uint | |
+-------+-----------+------------------+
3 rows in set (0.00 sec)
```
Also, you can check which stemming or lemmatizing algorithm is associated with the table:
```sql
SHOW TABLE demo SETTINGS;
+---------------+-----------------------+
| Variable_name | Value |
+---------------+-----------------------+
| settings | morphology = stem_en |
+---------------+-----------------------+
1 row in set (0.01 sec)
```
Let's add the data to the table. Below is an option to add one record at a time:
```sql
INSERT INTO demo (info, value) VALUES ('Walking down the street', 1);
Query OK, 1 row affected (0.01 sec)
```
and here's how to add records as a batch:
```sql
INSERT INTO demo (info, value) VALUES ('Walking along the embankment', 2), ('Walking the dog', 3), ('Reading a book', 4), ('Book read ', 5);
Query OK, 3 rows affected (0.00 sec)
```
Now let's check what we have written in the table:
```sql
SELECT * FROM demo;
+-----------------------+----------------------------------------------------+-------+
| id | info | value |
+-----------------------+----------------------------------------------------+-------+
| 8217204862853578790 | Walking down the street | 1 |
| 8217204862853578791 | Walking along the embankment | 2 |
| 8217204862853578792 | Walking the dog | 3 |
| 8217204862853578793 | Reading a book | 4 |
| 8217204862853578794 | Book read | 5 |
+-----------------------+----------------------------------------------------+-------+
5 rows in set (0.01 sec)
```
Let's search for a word that is close in meaning to the added ones:
```sql
SELECT * FROM demo WHERE match('read');
+---------------------+-----------------------------------+-------+
| id | info | value |
+---------------------+-----------------------------------+-------+
| 8217204862853578794 | Book read | 5 |
| 8217204862853578793 | Reading a book | 4 |
+---------------------+-----------------------------------+-------+
2 rows in set (0.01 sec)
```
You can also view the keyword for which the records were found, their number, documents, and more:
```sql
SHOW META;
+----------------+----------+
| Variable_name | Value |
+----------------+----------+
| total | 2 |
| total_found | 2 |
| total_relation | eq |
| time | 0.000 |
| keyword[0] | read |
| docs[0] | 2 |
| hits[0] | 2 |
+----------------+----------+
7 rows in set (0.01 sec)
```
To work with fields that are not involved in full-text search, attributes, you can use the classic SQL filtering statements:
```sql
SELECT * FROM demo WHERE value > 3;
+---------------------+-----------------------------------+-------+
| id | info | value |
+---------------------+-----------------------------------+-------+
| 8217204862853578794 | Book read | 5 |
| 8217204862853578793 | Reading a book | 4 |
+---------------------+-----------------------------------+-------+
2 rows in set (0.01 sec)
```
Deleting records can be done in the same way as the select queries:
```sql
DELETE FROM demo WHERE value = 5;
Query OK, 1 row affected (0.01 sec)
DELETE FROM demo WHERE match ('street');
Query OK, 1 row affected (0.01 sec)
DELETE FROM demo WHERE id = 8217204862853578791;
Query OK, 1 row affected (0.00 sec)
SELECT * FROM demo;
+---------------------+---------------------------------+-------+
| id | info | value |
+---------------------+---------------------------------+-------+
| 8217204862853578792 | Walking the dog | 3 |
| 8217204862853578793 | Reading a book | 4 |
+---------------------+---------------------------------+-------+
2 rows in set (0.00 sec)
```
Why don't you try adding and searching for some records? When you've finished, we can move on to the next thing.
Don't forget to disconnect:
```sql
exit;
```
Today that's all, next time we will see [how to change the word forms file in an existing table](/blog/mike-replace-update-wordforms/) and how to update our records.
 | anstalf | |
1,878,042 | Quick and dirty React - Tailwind | Getting Started with Tailwind CSS, PNPM, Vite, and Theme Management In today's fast-paced... | 0 | 2024-06-05T13:42:14 | https://dev.to/peter-fencer/quick-and-dirty-react-tailwind-4kd3 | frontend, webdev, javascript, beginners | > Getting Started with Tailwind CSS, PNPM, Vite, and Theme Management
In today's fast-paced development world, efficiency is key. Whether you're working on a quick prototype or setting up a new project, having the right tools can make a huge difference. I'll walk you through setting up a React project with Tailwind CSS, managed by PNPM, bundled with Vite, and equipped with a custom hook for theme management. This setup is not only efficient but also incredibly fast. My real application which is based on this setup are hot reload under 400ms!
Also the right use of Tailwind are eliminate the CSS, and layout is clear a place where it is belong, like:
```html
<section class="grid gap-2">
<p>Vertical content</p>
<p>with equal spaces between</p>
<p>Even in pure HTML with Tailwind</p>
</section>
```
*this way of work with Taiwind are work with any framework or without also*
## Why This Stack?
- React: A powerful library for building user interfaces.
- Tailwind CSS: A utility-first CSS framework that allows for rapid UI development.
- PNPM: A fast, disk space-efficient package manager.
- Vite: A next-generation frontend tooling for fast development and hot module replacement.
> Bonus is Custom Theme Management: Easily switch between light and dark modes.
Let's dive in!
## Prerequisites
Before we start, make sure you have the following installed:
- Node.js and npm
- PNPM
- Vite
You can install PNPM globally using npm:
```sh
npm install -g pnpm
```
## Setting Up the Project
1. Initialize the React Project with Vite and PNPM
First, create a new directory for your project and navigate into it:
```sh
mkdir quick-react && cd quick-react
```
## Initialize a new React project using Vite and PNPM:
```sh
pnpm create vite@latest
```
Choose React as the framework and follow the prompts.
### Install the necessary dependencies:
```sh
pnpm install
```
## 2. Install Tailwind CSS
Tailwind CSS can be installed via PNPM. Run the following commands to install Tailwind and its dependencies:
```sh
pnpm install -D tailwindcss postcss autoprefixer
npx tailwindcss init -p
```
This will create a tailwind.config.js file and a postcss.config.js file.
## Configure Tailwind CSS
Update the tailwind.config.js file to include the paths to all of your components:
```javascript
module.exports = {
content: ['./index.html', './src/**/*.{js,jsx,ts,tsx}'],
theme: {
extend: {},
},
plugins: [],
};
```
Next, update the src/index.css file to include the Tailwind directives:
```css
@tailwind base;
@tailwind components;
@tailwind utilities;
```
## Add Theme Management Hook
Create a hooks directory inside the src directory, and within it, create a useDarkLightTheme.js file with the following content:
```javascript
import { useState, useEffect, useCallback } from "react";
export const Theme = {
LIGHT: "light",
DARK: "dark"
}
export const useDarkLightTheme = () => {
const [theme, setTheme] = useState(Theme.DARK);
useEffect(() => {
(theme === Theme.DARK)
? document.documentElement.classList.add(Theme.DARK)
: document.documentElement.classList.remove(Theme.DARK);
}, [theme]);
const switchTheme = useCallback(() => setTheme(
(theme) =>
(theme === Theme.DARK)
? Theme.LIGHT
: Theme.DARK
), []);
return { theme, switchTheme, setTheme }
}
```
## Example MainFrame Component
This Component I used my code to solve the theme switching.
```javascript
import { useEffect } from "react";
import { Theme, useDarkLightTheme } from "../hooks/useDarkLightTheme";
export const MainFrame = ({ children }) => {
const { theme, setTheme, switchTheme } = useDarkLightTheme();
useEffect(() => { setTheme(Theme.DARK); }, [setTheme]);
return (
<main className="dark:bg-zinc-800 dark:text-white min-h-screen">
<button
className="fixed right-0 p-2 m-2 rounded-lg dark:bg-black bg-white opacity-70 z-20"
onClick={() => switchTheme()}>
{theme}
</button>
<section className="m-auto max-w-screen-md">
{children}
</section>
</main>
);
}
```
## Finally
start working by
```sh
pnpm start
```
Happy coding!
*Thx for the C4o by the cowork.* | peter-fencer |
1,878,078 | 🚀 Exciting News for React Native Developers! 🚀 | Recently i have discovered the "React Native IDE" extension for Visual Studio Code by Software... | 0 | 2024-06-05T13:42:14 | https://dev.to/madzimai/exciting-news-for-react-native-developers-3dl2 |
<img width="100%" style="width:100%" src=https://i.giphy.com/media/v1.Y2lkPTc5MGI3NjExOXJyazd2N2F4emdkY2E3NHlobzBpYTV4cW9yaHF1aHVxem5nODNtNCZlcD12MV9pbnRlcm5hbF9naWZfYnlfaWQmY3Q9Zw/CKOCV8dKimlmmS41kE/giphy.gif>
Recently i have discovered the "React Native IDE" extension for Visual Studio Code by Software Mansion! If you're working with React Native, this extension is a game-changer. Right now this extension is a beta version and only available for MacOs. Here are some of the incredible features that make it a must-have:
🔧 Integrated Experience : Enjoy a seamless development experience with all the tools you need right within VS Code. No more switching between multiple applications!
🔍 Click to Inspect : Debugging has never been easier. Simply click to inspect elements and see the properties and styles applied to them.
⛔ Use Breakpoints Right in VS Code : Set breakpoints and debug your React Native applications directly in VS Code. Step through your code and fix issues faster than ever.
🧭 Navigation Made Easier : Jump to definitions, references, and related files with ease. Spend less time searching and more time coding.
🔎 Search Through the Logs Easily : Quickly search and filter through logs to find the information you need. No more scrolling through endless console outputs!
🧩 Develop Components in Isolation : Work on individual components in isolation to ensure they work perfectly before integrating them into your main project.
📱 Adjust Device Settings on the Fly : Change device settings and configurations on the fly without leaving your development environment. [Test your app under different conditions effortlessly](https://ide.swmansion.com/#:~:text=What%20is%20React%20Native%20IDE,Native%20IDE%20only%20supports%20macOS.).
Happy Coding 🙌 | madzimai | |
1,878,077 | Mastering JavaScript: Your Ultimate Guide🚀 | Introduction JavaScript is a versatile, high-level programming language primarily used for... | 0 | 2024-06-05T13:40:30 | https://dev.to/dharamgfx/mastering-javascript-your-ultimate-guide-4mic | webdev, javascript, beginners, programming |
## Introduction
JavaScript is a versatile, high-level programming language primarily used for web development. It enables interactive web pages and is an essential part of web applications. JavaScript is easy to learn for beginners but has deep and powerful capabilities for experienced developers.
## Grammar and Types
### Basic Syntax
JavaScript programs are composed of statements, which are instructions to be executed.
```javascript
let x = 10;
console.log(x); // Outputs: 10
```
### Data Types
JavaScript supports various data types, including:
- **Primitive Types**: `String`, `Number`, `Boolean`, `Null`, `Undefined`, `Symbol`, and `BigInt`.
```javascript
let str = "Hello, World!";
let num = 42;
let isActive = true;
```
### Variables
Variables in JavaScript can be declared using `var`, `let`, or `const`.
- `var` has function scope.
- `let` and `const` have block scope, with `const` being used for constants.
```javascript
let age = 25;
const PI = 3.14;
```
## Control Flow and Error Handling
### Conditionals
Conditionals control the flow of execution based on conditions.
- **If-else Statements**:
```javascript
let age = 18;
if (age >= 18) {
console.log("Adult");
} else {
console.log("Minor");
}
```
### Error Handling
Error handling is crucial for managing exceptions and ensuring smooth execution.
- **Try-Catch-Finally**:
```javascript
try {
throw new Error("Something went wrong!");
} catch (error) {
console.error(error.message);
} finally {
console.log("Execution complete.");
}
```
## Loops and Iteration
### For Loop
For loops are used for iterating over a block of code a number of times.
- **Basic For Loop**:
```javascript
for (let i = 0; i < 5; i++) {
console.log(i); // Outputs: 0, 1, 2, 3, 4
}
```
### While Loop
While loops continue to execute as long as a specified condition is true.
- **Basic While Loop**:
```javascript
let i = 0;
while (i < 5) {
console.log(i); // Outputs: 0, 1, 2, 3, 4
i++;
}
```
## Functions
### Declaration and Invocation
Functions are reusable blocks of code that perform a specific task.
- **Function Declaration**:
```javascript
function greet(name) {
return `Hello, ${name}!`;
}
console.log(greet("Alice")); // Outputs: Hello, Alice!
```
### Arrow Functions
Arrow functions provide a shorter syntax for writing functions.
- **Arrow Function Syntax**:
```javascript
const add = (a, b) => a + b;
console.log(add(2, 3)); // Outputs: 5
```
## Expressions and Operators
### Arithmetic Operators
Arithmetic operators are used to perform mathematical operations.
- **Basic Arithmetic**:
```javascript
let sum = 5 + 3; // 8
let product = 4 * 2; // 8
```
### Logical Operators
Logical operators are used to combine or invert Boolean values.
- **AND, OR, NOT**:
```javascript
let isAdult = true;
let hasID = false;
console.log(isAdult && hasID); // false
console.log(isAdult || hasID); // true
```
## Numbers and Dates
### Working with Numbers
JavaScript provides various methods to handle numbers effectively.
- **Basic Operations**:
```javascript
let num = 123.456;
console.log(num.toFixed(2)); // "123.46"
```
### Working with Dates
The Date object is used to work with dates and times.
- **Date Object**:
```javascript
let now = new Date();
console.log(now.toISOString()); // Outputs current date and time in ISO format
```
## Text Formatting
### String Methods
Strings can be manipulated using various built-in methods.
- **Manipulating Strings**:
```javascript
let message = "Hello, World!";
console.log(message.toUpperCase()); // "HELLO, WORLD!"
console.log(message.slice(0, 5)); // "Hello"
```
## Regular Expressions
### Pattern Matching
Regular expressions are patterns used to match character combinations in strings.
- **Using Regex**:
```javascript
let pattern = /world/i;
let text = "Hello, World!";
console.log(pattern.test(text)); // true
```
## Indexed Collections
### Arrays
Arrays are list-like objects used to store multiple values.
- **Basic Array Operations**:
```javascript
let fruits = ["Apple", "Banana", "Cherry"];
console.log(fruits.length); // 3
console.log(fruits[1]); // "Banana"
```
## Keyed Collections
### Objects
Objects are collections of key-value pairs.
- **Creating and Accessing Objects**:
```javascript
let person = {
name: "Alice",
age: 30
};
console.log(person.name); // "Alice"
```
### Maps
Maps are collections of keyed data items, like objects but with better performance for frequent additions and removals.
- **Map Object**:
```javascript
let map = new Map();
map.set("key1", "value1");
console.log(map.get("key1")); // "value1"
```
## Working with Objects
### Object Methods
Objects can have methods, which are functions associated with the object.
- **Manipulating Objects**:
```javascript
let car = {
brand: "Toyota",
model: "Corolla"
};
car.year = 2020;
console.log(car);
```
## Using Classes
### Class Syntax
Classes provide a blueprint for creating objects.
- **Creating Classes**:
```javascript
class Animal {
constructor(name) {
this.name = name;
}
speak() {
console.log(`${this.name} makes a noise.`);
}
}
let dog = new Animal("Dog");
dog.speak(); // "Dog makes a noise."
```
## Using Promises
### Promise Syntax
Promises represent the eventual completion (or failure) of an asynchronous operation.
- **Handling Asynchronous Operations**:
```javascript
let promise = new Promise((resolve, reject) => {
let success = true;
if (success) {
resolve("Operation successful!");
} else {
reject("Operation failed.");
}
});
promise.then(message => {
console.log(message); // Outputs: Operation successful!
}).catch(error => {
console.error(error);
});
```
## JavaScript Typed Arrays
### Typed Array Basics
Typed arrays provide a mechanism for accessing raw binary data.
- **Using Typed Arrays**:
```javascript
let buffer = new ArrayBuffer(16);
let int32View = new Int32Array(buffer);
int32View[0] = 42;
console.log(int32View[0]); // 42
```
## Iterators and Generators
### Iterator Protocol
The iterator protocol allows objects to define or customize their iteration behavior.
- **Creating Iterators**:
```javascript
let iterable = {
[Symbol.iterator]() {
let step = 0;
return {
next() {
step++;
if (step <= 5) {
return { value: step, done: false };
} else {
return { done: true };
}
}
};
}
};
for (let value of iterable) {
console.log(value); // Outputs: 1, 2, 3, 4, 5
}
```
### Generators
Generators simplify the creation of iterators by providing a function-based syntax.
- **Generator Function**:
```javascript
function* generator() {
yield 1;
yield 2;
yield 3;
}
let gen = generator();
console.log(gen.next().value); // 1
console.log(gen.next().value); // 2
console.log(gen.next().value); // 3
```
## Meta Programming
### Proxy
Proxies enable the creation of objects with custom behavior for fundamental operations.
- **Using Proxies**:
```javascript
let target = {};
let handler = {
get: function(obj, prop) {
return prop in obj ? obj[prop] : 42;
}
};
let proxy = new Proxy(target, handler);
console.log(proxy.nonExistentProperty); // 42
```
## JavaScript Modules
### Module Syntax
Modules allow you to organize code by exporting and importing functionality across different files.
- **Import and Export**:
```javascript
// module.js
export const greet = (name) => `Hello, ${name}!`;
// main.js
import { greet } from './module.js';
console.log(greet('Alice')); // Outputs: Hello, Alice!
```
By mastering these core concepts and features of JavaScript, you'll be | dharamgfx |
1,878,076 | Diamante Net Hackathon 2024 | Welcome to the Diamante Net Hackathon 2024! Join us as we unlock new possibilities in blockchain... | 0 | 2024-06-05T13:40:16 | https://dev.to/sarang_pokhare/diamante-net-hackathon-2024-1f8 | hackathon, coders, developers, blockchain | Welcome to the **Diamante Net Hackathon 2024!** Join us as we unlock new possibilities in blockchain technology and foster innovation across multiple sectors. Whether you're a developer, or blockchain enthusiast, this is your platform to showcase your skills, connect with industry leaders, and transform your ideas into reality.
Click here to apply: https://diamante-net-hackathon.devfolio.co/
 | sarang_pokhare |
1,878,074 | The Perfect Guide on Recovering your USDC, USDT by CybergoatTechie! | I'd really urge anybody who needs help with recovery to reach thecybergoat techie as they're one of... | 0 | 2024-06-05T13:35:21 | https://dev.to/peggyfleming/the-perfect-guide-on-recovering-your-usdc-usdt-by-cybergoattechie-3kl6 | I'd really urge anybody who needs help with recovery to reach [thecybergoat techie](https://cybergoattechie.com/) as they're one of the most talent group you'll come across on the internet!
 | peggyfleming | |
1,878,073 | "Unlock Success: Digital Marketing Consultant in Pune" | Are you a business owner in Pune striving to make a mark in the digital world? Look no further! In... | 0 | 2024-06-05T13:35:09 | https://dev.to/swapnil_majgoankar_8afc39/unlock-success-digital-marketing-consultant-in-pune-4087 | swapnilmajgaonkar, consultant, digitalmarketing | Are you a business owner in Pune striving to make a mark in the digital world? Look no further! In today's competitive landscape, having a robust online presence is crucial for business growth. That's where a [Digital Marketing Consultant in Pune ](https://www.swapnilmajgaonkar.in/
)steps in to unlock your success.
What exactly does a Digital Marketing Consultant do? Think of them as your personal guide through the digital maze. They understand the ins and outs of online marketing and help businesses like yours navigate the complexities to achieve their goals.
In Pune, where innovation thrives and entrepreneurship flourishes, standing out in the digital realm can be challenging. But with the expertise of a Digital Marketing Consultant, you can transform your online presence and unlock new opportunities for success.
From search engine optimization (SEO) to social media marketing and everything in between, a Digital Marketing Consultant offers a wide range of services tailored to suit your business needs. They work closely with you to understand your objectives, identify areas for improvement, and develop strategies that deliver results.
Imagine your website ranking higher on search engine results pages (SERPs), attracting more organic traffic and potential customers. Picture your social media profiles engaging with your audience, building brand loyalty, and driving conversions. With the help of a [Digital Marketing Consultant in Pune](https://www.swapnilmajgaonkar.in/), these dreams can become a reality.
But it's not just about implementing strategies – it's about understanding your unique business challenges and finding solutions that work for you. That's where the human touch comes in.
A Digital Marketing Consultant takes the time to listen to your concerns, answer your questions, and provide personalized recommendations that align with your goals.
So why wait? If you're ready to unlock success for your Pune business, it's time to partner with a Digital Marketing Consultant. Let them be your trusted advisor on the journey to digital greatness.
| swapnil_majgoankar_8afc39 |
1,846,660 | Rusty RAG Quiz Creator | I wanted to get started with Rust after being a Scala developer for several years. I have little to... | 27,611 | 2024-06-05T13:32:16 | https://dev.to/narroric/rusty-rag-quiz-creator-1d31 | llm, rust, rag | I wanted to get started with Rust after being a Scala developer for several years. I have little to no experience with bare metal languages after working with Java, Python and Javascript, so thought it would help solidify my understanding of how languages work under the hood, something I've not touched on since I did my Computer Science bachelors in 2015.
I'm taking a somewhat messy and unconventional approach, in that I've devised a project that touches on several areas I'm interested in, and I'm going to hammer at it with the help of LLMs like chatGPT and Groq, which will pump out code until a snag is hit which is sufficiently complex enough to warrant learning the material in depth.
The project is a "quiz creator", which will take exported chat history from one's interactions with chatGPT, can identify where questions have been asked, and take both question and answers to create quizzes from as a revision aid. Because, who else forgets information quickly when there's a lack of prompts to recall it?
The interesting areas the project shall touch on are Large Language Models (LLMs) for identifying a question along with it's context, Agentic Systems ([see introduction here](https://www-marktechpost-com.cdn.ampproject.org/v/s/www.marktechpost.com/2024/05/29/what-are-ai-agents-how-do-you-make-one-understand-the-basics/?amp=&_gsa=1&_js_v=a9&usqp=mq331AQGsAEggAID#amp_tf=From%20%251%24s&aoh=17170931005165&csi=0&referrer=https%3A%2F%2Fwww.google.com&share=https%3A%2F%2Fwww.marktechpost.com%2F2024%2F05%2F29%2Fwhat-are-ai-agents-how-do-you-make-one-understand-the-basics%2F)) for delegating another LLM to generate the quizzes in preconfigured ways, and Retrieval Augmented Generation architecture (RAG - [see here for more](https://www.qwak.com/post/utilizing-llms-with-embedding-stores)) to store the conversations in a vector database for greater semantic search capabilities.
To make sure I cover the full stack I'm going to be using Tokio for async I/O processing, LLM library for grabbing models, Docker to containerize my application, Github Actions along with Terraform and Ansible to set up CI/CD pipelines so that pull requests with the main/master branch automate the delivery of the service to the cloud.
Code can be found here for the [Rust API](https://github.com/Kieran-Sears/RAG-API).
And here for the [Terraform / Ansible Infrastructure](https://github.com/Kieran-Sears/RAG-INFRA).
I'll be posting my trials and tribulations on here as I go, more a collection of thoughts and reflections as opposed to a detailed guide for others to follow, but that said it may well still be of use to read! | narroric |
1,878,071 | Are Custom Cotton Bags Versatile And Eco-Friendly? | Rapidly increasing awareness and sustainability impact the environment. Hence, the demand for cotton... | 0 | 2024-06-05T13:31:06 | https://dev.to/tulinii/are-custom-cotton-bags-versatile-and-eco-friendly-4nb2 | customcottonbags |
Rapidly increasing awareness and sustainability impact the environment. Hence, the demand for cotton drawstring pouches is increasing rapidly in today's time. You can use these pouches in many ways as they are versatile. People are more attracted towards versatile things, so this pouch can be the best choice for all of you.
Yes, absolutely; **[cotton jewellery pouches](url)** are eco-friendly as they are made from 100% cotton fabric, and cotton has a good impact on the environment. The drawstring pouches offered by Tulinii are made from cotton fabric and are versatile to use. You can use these bags to store your precious jewellery, package wedding gifts, and promote your business. Today's blog can be very beneficial for you because we will introduce you to the versatility and friendliness of custom asks here.
**Eco Friendliness**: The pouches offered by Tulinii are Eco Friendly; let's know some factors about it –
• Cotton is a renewable and natural resource, and the bags we offer are made from cotton, which is a sustainable option for you.
• Cotton pouches do not last long and decompose quickly, hence reducing environmental impact and pollution.
• Cotton bags are eco-friendly as well as durable; hence, they can be used again and again. They are long-lasting, so you can store your jewellery for a long time.
• Cotton bags are durable and customizable; hence, the demand for plastic bags is decreasing.
**Versatility**: Yes, the personalized wedding favour bags we offer are versatile. Let’s find out more about them –
• You can use these bags to organize, store and keep your essential jewellery. We have bags available in many varieties, including shape, design, size, and colour. You can purchase bags according to your preference and choice.
• These pouches are best for gifting jewellery at weddings, functions, or any special occasion. You can use them as packaging as they provide luxurious packaging.
• You can customize pouches with your company and brand logo and use them for brand promotion. This will help identify and promote both your product and your brand.
• [**Drawstring cotton bags**](**url**) are mostly used in Ayurveda and cosmetic stores, and you can also keep herbals or cosmetics in them.
| tulinii |
1,878,069 | Tightly Coupled Code vs Loosely Coupled Code | In software development, the terms "tightly coupled" and "loosely coupled" refer to the degree to... | 0 | 2024-06-05T13:27:52 | https://dev.to/dharmingheewala/tightly-coupled-code-vs-loosely-coupled-code-731 | softwareengineering, programming, codequality, cleancode | In software development, the terms "**tightly coupled**" and "**loosely coupled**" refer to the degree to which components of a system depends on each other.
**Tightly Coupled Code**: Tightly coupled code is when a group of classes are highly dependent on one another. This isn't necessarily a bad thing, but it can make the code harder to test because of the dependent classes are so intertwined. They can't be used independently or substituted easily.
In tightly coupled systems, each component or class in the system knows details about many other components or classes. They are interdependent, meaning that if one component changes, it can have a ripple effect on all other components that depend on it. This can make the system as a whole more difficult to maintain, because changes in one place can require changes in many other places.
Tightly coupled systems can also be more difficult to test, because each component might rely on many other components to function correctly. This means that to test just one component, you might need to also set up and manage many other components.
Here's an example of tightly coupled code in C#:
```C#
public class Customer
{
public int Id {get; set; }
public string Name {get; set; }
}
public class CustomerBusinessLogic
{
public CustomerBusinessLogic()
{
_customerDataAccess = new CustomerDataAccess();
}
private CustomerDataAccess _customerDataAccess;
}
```
In this example, `CustomerBusinessLogic `is tightly coupled to `CustomerDataAccess`. It directly instantiates `CustomerDataAccess`, making it difficult to substitute a different implementation of mock it for testing.
**Loosely Coupled Code**: Loosely coupled code is when the components are made independent as much as possible. This is generally considered a good practice as it makes the code more flexible, easier to reuse, and easier to test because components can be tested independently and substituted easily.
In loosely coupled systems, components or classes are designed to interact with each other as little as possible. They still communicate and interact, but they do so through well-defined interfaces, without needing to know the details of how other components are implemented.
1. **Easier Maintenance**: Because each component is independent, changes in one component don't require changes in other components. This makes the system as a whole easier to maintain.
2. **Improved Testability**: Components can be tested independently, without needing to set up and manage other components. This makes it easier to write unit tests, and makes the tests more reliable, because they're less likely to be affected by changes in other parts of the system.
3. **Greater Flexibility and Reusability**: Because components don't depend on each other, they can be more easily reused in different parts of the system, or even in different systems. They can also be replaced or upgraded without affecting other components.
Here's an example of loosely coupled code in C#:
```C#
public interface ICustomerDataAccess
{
void Save(ICustomerDataAccess customer);
}
public class CustomerBusinessLogic
{
private ICustomerDataAccess _dataAccess;
public CustomerBusinessLogic(ICustomerDataAccess dataAccess)
{
_dataAccess = dataAccess;
}
public void Save(CustomerBusinessLogic customer)
{
_dataAccess.Save(customer);
}
}
```
How to Achieve Loose Coupling:
There are several techniques that can help achieve loose coupling:
1. **Dependency Injection**: Instead of having components create the objects they depend on, those objects are created elsewhere and passed in (injected) to the component that needs them.
2. **Programming to Interfaces**: Instead of having components interact with concrete classes, they interact with interfaces. This means that any class that implements the interface can be substituted in, without the component knowing or caring about the details of how that class is implemented.
3. **Event-Driven Programming**: Instead of components calling each other directly, they emit events that other components can listen for and respond to. This allows components to communicate and interact without needing to know about each other.
By using these techniques, you can create systems that are easier to maintain, test, and extend.
Happy Coding... | dharmingheewala |
1,878,068 | "Frontend Challenge" | The world of frontend development is ever-evolving, presenting new and exciting challenges to... | 0 | 2024-06-05T13:26:40 | https://dev.to/klimd1389/frontend-challenge-5249 | webdev, frontend, devops, news | The world of frontend development is ever-evolving, presenting new and exciting challenges to developers every day. Whether you're a seasoned professional or a novice eager to learn, a "Frontend Challenge" is an excellent way to hone your skills and stay ahead of the curve in this dynamic field.
Understanding the Frontend Challenge
Frontend development involves creating the user interface and experience for websites and applications. This encompasses everything from designing the layout, ensuring responsiveness across devices, to optimizing performance. The "Frontend Challenge" is essentially a series of tasks or projects designed to test and improve your capabilities in these areas.
Key Components of a Frontend Challenge
Responsive Design: Ensuring that the website looks and functions well on all devices, from desktops to smartphones.
Performance Optimization: Techniques to enhance loading speeds and ensure smooth interactions.
Cross-Browser Compatibility: Making sure the website works seamlessly across different browsers.
Accessibility: Ensuring that the site is usable by people with various disabilities.
Advanced JavaScript: Implementing complex functionalities using JavaScript frameworks and libraries like React, Angular, or Vue.js.
CSS Preprocessing: Utilizing tools like Sass or Less to write cleaner and more maintainable CSS.
Version Control: Managing and collaborating on code using systems like Git.
Benefits of Participating in a Frontend Challenge
- Skill Enhancement: Sharpen your existing skills and learn new ones.
- Portfolio Building: Create projects that you can showcase to potential employers.
- Community Engagement: Connect with other developers, share knowledge, and receive feedback.
- Problem-Solving: Develop better problem-solving skills by tackling real-world issues.
Popular Frontend Challenges
- FreeCodeCamp: Offers a variety of projects and challenges to help you learn and practice.
- Frontend Mentor: Provides real-world projects that you can work on and get feedback.
- CSS Battle: A fun way to improve your CSS skills by trying to replicate designs as closely as possible.
Regularly engaging in these challenges will keep your skills sharp and make you a more versatile and proficient frontend developer. | klimd1389 |
1,878,053 | Golang middleware && Wei, Jin, Southern and Southern Dynasties | Explanation The holographic projections symbolize the implementation of Golang... | 0 | 2024-06-05T13:22:36 | https://dev.to/fubumingyu/golang-middleware-wei-jin-southern-and-southern-dynasties-7o6 |
## Explanation
The holographic projections symbolize the implementation of Golang middleware to transition and integrate new systems efficiently, reflecting Sima Yan's establishment of the Jin Dynasty.
## Wei, Jin, Southern and Southern Dynasties
At the end of the Later Han Dynasty, Cao Pi (220-226), son of Cao Cao, established the Wei Dynasty (220-265) in northern China. Concurrently, Liu Bei (221-223) founded the Shu state (221-263) in Sichuan, and Sun Quan (229-252) established the Wu state (222-280) in Jiangnan, leading to the era of the Three Kingdoms. The Wei Dynasty eventually conquered Shu, and the Wei general Sima Yan (Emperor Wu, r. 265-290) overthrew Wei to establish the Jin Dynasty (265-316). The Jin Dynasty unified China in 280 but soon collapsed due to internal conflicts (the Eight Kings Rebellion, 290-306). During this time, the Xiongnu and other northern tribes gained strength. When the Xiongnu moved south, they destroyed the Jin Dynasty, leading to the chaotic period of the Wu Hu and Sixteen Kingdoms (304-439), characterized by intense warfare. The Jin family established the Eastern Jin Dynasty (317-420) in Jiangnan to resist these invasions. In the 5th century, the Northern Wei Dynasty (386-534), founded by the Tuoba clan, unified northern China, while the Rouran Khaganate opposed them on the Mongolian plateau. In the south, the Song Dynasty (420-479) succeeded the Eastern Jin. This era is known as the Northern and Southern Dynasties Period (439-589), marked by the rise and fall of five northern dynasties and four southern dynasties.
## What is Golang middleware?
The term “middleware,” used when setting up an API server in Go, refers to the layer that processes HTTP requests along the way.
For example, it rewrites HTTP headers of the request, assigns a unique key to the request, outputs logs, and performs other processing that you may want to manage as a whole system, such as authentication.
authentication, and other processes that you want to manage as a whole system.
## Reference
- [middlewareってなに？インフラが思うミドルウェアとはちがうの？](https://blog.framinal.life/entry/2021/08/29/014449)
- [HTTP Middleware の作り方と使い方](https://tutuz-tech.hatenablog.com/entry/2020/03/23/220326)
| fubumingyu | |
1,878,065 | 用 Tensorflow.js COCO-SSD 辨識圖片物件 | 本篇要解決的問題 幾年前有寫了一篇〈ML5.js 神經網路 開發圖像辨識〉，是辨識圖片裡的物件，最近跟朋友設計一個活動，是需要判斷照片中的人數，ML5 有點不夠用，問了... | 18,536 | 2024-06-05T13:21:25 | https://www.letswrite.tw/coco-ssd/ | tensorflow, cocossd, vue, javascript | ## 本篇要解決的問題
幾年前有寫了一篇〈[ML5.js 神經網路 開發圖像辨識](https://www.letswrite.tw/ml5-image-classifier/)〉，是辨識圖片裡的物件，最近跟朋友設計一個活動，是需要判斷照片中的人數，ML5 有點不夠用，問了 ChatGPT 後，知道了 TensorFlow.js 裡，有一個 COCO-SSD 的模型，[官方的說明](https://www.tensorflow.org/js/models?hl=zh-tw) 是「在單一影像中定位及辨識多個物件」，實際用起來後，也真的覺得好用，除了可以把人辨識出來，還可以給在照片上的範圍。
本篇主要參考的來源，是 [官方說明文件](https://github.com/tensorflow/tfjs-models/tree/master/coco-ssd)、ChatGPT 的回答。
最後完成的 Demo：
<https://letswritetw.github.io/letswrite-coco-ssd/>
---
## 基本使用
官方文件的使用教學很基本，就是我們用 `img src` 把圖檔放上去後，再用 COCO-SSD 這個模型來進行辨識，程式碼如下：
```html
<script src="https://cdn.jsdelivr.net/npm/@tensorflow/tfjs"> </script>
<script src="https://cdn.jsdelivr.net/npm/@tensorflow-models/coco-ssd"> </script>
<img id="img" src="cat.jpg"/>
<script>
const img = document.getElementById('img');
cocoSsd.load().then(model => {
// detect objects in the image.
model.detect(img).then(predictions => {
console.log('Predictions: ', predictions);
});
});
</script>
```
---
## 進階用法
這邊 August 因為跟朋友設計的活動，是要讓參加活動的人，自己拍照後上傳，所以不能像官方的範例一樣，直接就能取得圖片。
以下程式碼使用 Vue.js 來實作。
### HTML
HTML 的部份，我們放一個上傳檔案的按鈕，跟要在照片上標出辨識範圍的 canvas：
```html
<input
type="file" ref="photo"
accept="image/*"
@change="photoHandler"/>
<canvas id="canvas"></canvas>
```
`accept` 限制使用者只能上傳圖片。
`ref="photo"` 是要在 Vue.js 裡能抓到使用者選擇的 file。
`photoHandler` 就是稍後要寫在 Vue.js 的 method。
### Vue.js / JavaScript
因為 model 載入要時間，如果不想每次都載入，就要把 model 存在 data。
辨識的結果也需要存在 data，才好把結果呈現在畫面上。
```js
data() {
return {
result: null,
modal: null
}
}
```
`methods` 先來處理使用者選擇了圖片檔：
```js
async photoHandler() {
const file = this.$refs.photo.files[0];
if (!file) return;
// 載入 COCO-SSD 模型
this.model = this.model || await cocoSsd.load();
const imageElement = document.createElement('img');
imageElement.src = URL.createObjectURL(file);
imageElement.onload = async () => {
this.result = await this.model.detect(imageElement);
// 在照片上標出範圍
this.drawBox(imageElement, this.result);
// 清除暫時創建的圖檔 URL
URL.revokeObjectURL(imageElement.src);
};
}
```
COCO-SSD 辨識的結果，會是一個陣列，像這樣：
```json
[
{
"bbox": [
244.66079431772232,
405.9116929471493,
304.8147379755974,
786.6561211645603
],
"class": "person",
"score": 0.9971041083335876
},
...
]
```
`bbox` 是辨識出的範圍。
`class` 是辨識結果，`score` 是信心值，愈接近 1 就愈準。
我們在照片用 COCO-SSD 辨識完後，執行了 `drawBox`，主要是標出照片裡 COCO-SSD 辨識的物件。
```js
async drawBox(imageElement, predictions) {
const canvas = document.getElementById('canvas');
const context = canvas.getContext('2d');
// 設定畫布大小與圖片一致
canvas.width = imageElement.width;
canvas.height = imageElement.height;
// 畫圖片到畫布上
context.drawImage(imageElement, 0, 0, canvas.width, canvas.height);
for (let prediction of predictions) {
const [x, y, width, height] = prediction.bbox;
const text = `${prediction.class} (${(prediction.score * 100).toFixed(2)}%)`;
// 畫框
context.strokeStyle = 'yellow';
context.lineWidth = 8;
context.strokeRect(x, y, width, height);
// 設定字體樣式
context.font = '28px Arial';
context.fillStyle = 'yellow';
// 量測文字寬度與高度
const textWidth = context.measureText(text).width;
const textHeight = 28 * 1.5;
const padding = 8;
// 畫白色背景框，包含 padding
context.fillStyle = 'white';
context.fillRect(x - padding, y - 20 - textHeight - padding, textWidth + padding * 2, textHeight + padding * 2);
// 畫文字
context.fillStyle = 'black'; // 文字顏色
context.fillText(text, x + padding / 2, y - 10 - textHeight / 2);
}
}
```
---
## 辨識範例、原始碼
我們來試一下結果，以下圖片是在可商用的素材網 [Pixabay](https://pixabay.com/) 上下載的。
先來辨識一群人：
接著來辨識動物：
神奇的是，把柯基辨識成 Teddy Bear 了 XD。
最後來辨識物品：
雖然相機、滑鼠、茶杯都沒辨識到，不過還行，免費的就不要求了。
最後再次附上 Demo，也附上 Demo 的原始碼，取用前麻煩多多分享本篇，你的小小舉動，對本站都是大大的鼓勵。
Demo：
<https://letswritetw.github.io/letswrite-coco-ssd/>
原始碼：
<https://github.com/letswritetw/letswrite-coco-ssd> | letswrite |
1,878,055 | First Home Buyer Broker - Find Your Perfect Home Loan | Introduction Buying your first home is a significant milestone, a blend of excitement and challenge.... | 0 | 2024-06-05T13:19:46 | https://dev.to/loansandmortgages/first-home-buyer-broker-find-your-perfect-home-loan-3410 | mortgagebroker, loanbroker, homeloanbroker | Introduction
Buying your first home is a significant milestone, a blend of excitement and challenge. For many, navigating the complexities of mortgages and financing options can be overwhelming. This is where a first home buyer broker becomes invaluable. In this comprehensive guide, we'll explore everything you need to know about finding your perfect home loan with the help of a broker.
Understanding the Role of a First Home Buyer Broker
A [first home buyer broker](https://www.loansandmortgages.com.au/home-loan-brokers-sydney/) acts as an intermediary between you and potential lenders. Their primary goal is to help you find a home loan that suits your needs and financial situation. Unlike a direct lender, brokers have access to a variety of loan products from multiple lenders, providing you with a broader range of options.
Benefits of Using a Broker
Access to Multiple Lenders: Brokers have relationships with many lenders, including banks, credit unions, and other financial institutions. This means they can present you with numerous loan options.
Expert Advice: Brokers are knowledgeable about the mortgage market. They can explain the pros and cons of different loan products, helping you make an informed decision.
Negotiation Power: Experienced brokers can negotiate better terms and interest rates on your behalf.
How to Choose the Right Broker
Selecting the right broker is crucial to finding the best home loan. Here are some tips to ensure you choose wisely:
Research and Reviews
Start by researching potential brokers online. Check for endorsements and reviews from prior customers. Positive feedback and high ratings are good indicators of a reliable broker.
Credentials and Experience
Check the broker’s credentials. They should be licensed and have several years of experience in the mortgage industry. Experienced brokers are more likely to understand the intricacies of the market and provide valuable insights.
Range of Lenders
Ensure the broker has access to a wide range of lenders. A broker with a limited pool of lenders might not offer the best loan products available in the market.
Transparency
Your broker should be transparent about their fees and commissions. Ask for a detailed breakdown of costs to avoid any hidden charges.
The Mortgage Application Process
Understanding the mortgage application process can help you prepare and feel more confident as you work with your broker. Here’s a step-by-step guide:
1. Pre-Approval
Be pre-approved for a mortgage before you begin looking for a home. Pre-approval gives you an idea of how much you can borrow, making it easier to set a budget.
2. Home Search
Once you have your pre-approval, you can start looking for your ideal house. Your broker can provide guidance on properties within your budget.
3. Loan Selection
Once you’ve found a home, your broker will help you select the best loan product. They will compare different options, considering factors like interest rates, loan terms, and fees.
4. Application Submission
Your broker will assist you in completing the mortgage application and submitting it to the chosen lender. They will ensure all necessary documents are included to avoid delays.
5. Underwriting
The lender’s underwriting team will review your application, verifying your financial information and the property details. This process can take a few weeks.
6. Approval and Closing
If the underwriter approves your application, you’ll receive a formal loan offer. Your broker will help you understand the terms and conditions. Once you accept the offer, you’ll proceed to closing, where the loan is finalized, and you become a homeowner.
Conclusion
Navigating the journey of buying your first home is much easier with the right guidance. A first home buyer broker can provide invaluable assistance, from finding the best loan products to negotiating favorable terms. By understanding the mortgage process and considering your financial situation, you can confidently make one of the most significant investments of your life. Remember, the goal is to find a home loan that suits your needs, ensuring a smooth and successful home buying experience. | loansandmortgages |
1,878,054 | SQL injection | SQL Injection (SQL enjeksiyonu), kötü niyetli kullanıcıların veritabanına zararlı SQL komutları... | 0 | 2024-06-05T13:14:47 | https://dev.to/mustafacam/sql-injection-n28 | SQL Injection (SQL enjeksiyonu), kötü niyetli kullanıcıların veritabanına zararlı SQL komutları ekleyerek yetkisiz veri erişimi veya veri manipülasyonu yapmasına olanak tanıyan bir güvenlik açığıdır. SQL enjeksiyonunun nasıl çalıştığını ve nasıl önlenebileceğini göstermek için bir örnek üzerinden gidelim.
### Örnek Senaryo
Bir web uygulamasında, kullanıcıların kullanıcı adı ve şifre ile giriş yapmasını sağlayan basit bir login formu olduğunu varsayalım. Bu form, kullanıcı adı ve şifreyi alıp veritabanında doğrulamak için SQL sorgusu kullanır.
### Güvensiz Kod python
```python
import sqlite3
def login(username, password):
conn = sqlite3.connect('example.db')
cursor = conn.cursor()
query = f"SELECT * FROM users WHERE username = '{username}' AND password = '{password}'"
cursor.execute(query)
user = cursor.fetchone()
if user:
print("Login successful")
else:
print("Login failed")
conn.close()
```
Bu kod parçası, kullanıcı adı ve şifreyi bir SQL sorgusuna doğrudan yerleştirir. Eğer kötü niyetli bir kullanıcı, kullanıcı adı veya şifre alanına özel hazırlanmış bir giriş yaparsa, SQL enjeksiyonu gerçekleştirilebilir.
### SQL Enjeksiyonu Örneği
Kullanıcı adı alanına şu değeri girdiğinizi varsayalım:
```
' OR '1'='1
```
Şifre alanına herhangi bir şey (örneğin `password123`) girebiliriz, çünkü bu alan SQL sorgusunda önemli olmayacaktır. Bu durumda, SQL sorgusu şu hale gelir:
```sql
SELECT * FROM users WHERE username = '' OR '1'='1' AND password = 'password123'
```
Bu sorgu, '1'='1' ifadesi her zaman doğru olduğu için tüm kullanıcıları döndürecektir. Yani, saldırgan, şifreyi bilmeden sisteme giriş yapabilir.
### Güvenli Kod
SQL enjeksiyonunu önlemek için, parametreli sorgular (prepared statements) veya ORM (Object-Relational Mapping) araçları kullanılabilir. İşte aynı örnek, parametreli sorgular kullanılarak nasıl güvenli hale getirilir:
```python
import sqlite3
def login(username, password):
conn = sqlite3.connect('example.db')
cursor = conn.cursor()
query = "SELECT * FROM users WHERE username = ? AND password = ?"
cursor.execute(query, (username, password))
user = cursor.fetchone()
if user:
print("Login successful")
else:
print("Login failed")
conn.close()
```
Bu şekilde, kullanıcı adı ve şifre doğrudan SQL sorgusuna eklenmez, yerine parametreler kullanılarak sorguya dahil edilir. Bu, SQL enjeksiyonunu önler çünkü kullanıcı tarafından girilen değerler SQL sorgusunun bir parçası olarak değil, ayrı parametreler olarak işlenir.
### Sonuç
SQL enjeksiyonu, güvenlik açığı bulunan web uygulamalarında ciddi sonuçlara yol açabilir. Bu nedenle, her zaman parametreli sorgular kullanarak veya ORM araçlarıyla çalışarak kullanıcı girişlerini güvenli bir şekilde işlemek önemlidir. Bu yöntemler, kullanıcı tarafından sağlanan verilerin doğrudan SQL sorgularına dahil edilmesini engeller ve böylece SQL enjeksiyonu riskini ortadan kaldırır. | mustafacam | |
1,878,052 | Benefit of hiring a Ghostwriter | Hiring a ghostwriter offers numerous benefits, especially for professionals and businesses aiming to... | 0 | 2024-06-05T13:08:38 | https://dev.to/jessica_wilson_a71f60f691/benefit-of-hiring-a-ghostwriter-543g | ghostwriter, ghostwriting, americanpublisher, bookwriting | Hiring a ghostwriter offers numerous benefits, especially for professionals and businesses aiming to produce high-quality content efficiently. Engaging the best ghostwriting services ensures that your ideas are skillfully transformed into compelling narratives, whether for an autobiography, business book, or novel. A ghostwriter’s expertise can significantly enhance the quality of your work, ensuring it resonates with your target audience.
For companies like [American Publisher House](https://americanpublisherhouse.com/), a ghostwriter can streamline the publishing process, delivering polished manuscripts ready for publication. This is particularly valuable for businesses that need to produce multiple works without compromising on quality. Ghostwriters also play a crucial role in the digital age as [ebook writers](https://americanpublisherhouse.com/ebook-writing-services/), crafting content optimized for various e-readers and digital platforms.
Moreover, a professional ghostwriter collaborates closely with book marketing companies, ensuring that the content is not only well-written but also marketable. Their understanding of market trends and audience preferences can help tailor the book to maximize its reach and impact. This synergy between ghostwriters and marketing experts enhances the book's potential for success.
In conclusion, hiring a ghostwriter from a reputable firm like American Publisher House or through the [best ghostwriting services](https://americanpublisherhouse.com/ebook-writing-services/) offers unparalleled advantages, from exceptional writing quality to effective book marketing strategies, ultimately ensuring your project’s success. | jessica_wilson_a71f60f691 |
1,878,051 | Why Remote Work is Killing Innovation | Remote work has become the norm for many companies worldwide, especially in the wake of the COVID-19... | 0 | 2024-06-05T13:06:52 | https://dev.to/callumdev1337/why-remote-work-is-killing-innovation-3f4o | Remote work has become the norm for many companies worldwide, especially in the wake of the COVID-19 pandemic. Proponents argue that remote work offers numerous benefits, such as increased flexibility, reduced commuting time, and better work-life balance. However, beneath these surface-level advantages lies a more sinister reality: remote work is killing innovation. This post delves into why remote work is detrimental to creativity, collaboration, and overall organizational success.
## The Myth of Remote Productivity
### Overview
Advocates of remote work often claim that it boosts productivity. Employees can work in a comfortable environment without the distractions of a traditional office. However, productivity should not be the sole metric for success; innovation and creativity are equally, if not more, important.
### The Reality
1. **Lack of Spontaneous Collaboration**: Innovation often stems from spontaneous interactions and casual conversations that happen in an office environment. These unplanned discussions can lead to the exchange of ideas and the birth of creative solutions.
2. **Isolation and Groupthink**: Working in isolation can lead to a narrow perspective and groupthink. Without diverse viewpoints and face-to-face interactions, teams may miss out on valuable insights and fresh ideas.
3. **Reduced Mentorship Opportunities**: Junior employees and new hires benefit greatly from the in-person mentorship and on-the-job learning that is more effective in an office setting. Remote work makes it harder to build these essential relationships.
## The Creativity Crisis
### Lack of Inspiration
1. **Monotonous Environment**: Working from home can become monotonous, stifling creativity. The office environment, with its dynamic interactions and varied stimuli, can inspire innovative thinking.
2. **Limited Brainstorming Sessions**: Virtual brainstorming sessions lack the energy and spontaneity of in-person meetings. The barriers to effective communication, such as poor internet connections and muted microphones, can hinder the flow of ideas.
### The Impact on Team Dynamics
1. **Weakening Team Bonds**: Strong team dynamics are crucial for innovation. Remote work can weaken team bonds, as employees miss out on social interactions that build trust and camaraderie.
2. **Communication Barriers**: Misunderstandings and miscommunications are more likely to occur in a remote setting. These issues can slow down the decision-making process and hinder collaborative efforts.
## The Downside of Flexibility
### Overwork and Burnout
1. **Blurred Boundaries**: Remote work blurs the boundaries between personal and professional life, leading to longer working hours and burnout. Overworked employees are less likely to be innovative and more prone to making mistakes.
2. **Lack of Structured Breaks**: The absence of structured breaks and the constant pressure to be available can reduce overall productivity and creativity.
### The False Sense of Autonomy
1. **Isolation from Leadership**: Remote workers may feel disconnected from leadership, leading to a lack of direction and motivation. Effective leadership is crucial for fostering an innovative culture.
2. **Reduced Accountability**: The lack of direct supervision can lead to reduced accountability, affecting the overall performance and innovation of the team.
## The Case for the Office
### Rebuilding a Culture of Innovation
1. **Facilitating Collaboration**: Offices facilitate face-to-face collaboration, which is essential for brainstorming and problem-solving.
2. **Enhancing Communication**: In-person communication is more effective, reducing misunderstandings and fostering a more cohesive team environment.
### Encouraging a Balanced Approach
1. **Hybrid Work Models**: A balanced approach, such as hybrid work models, can offer the best of both worlds. Employees can enjoy the flexibility of remote work while still benefiting from the collaborative and innovative environment of the office.
2. **Investing in Office Culture**: Companies should invest in creating a dynamic and inspiring office culture that encourages creativity and innovation.
## Conclusion
While remote work has its benefits, it is crucial to recognize its potential drawbacks, particularly in terms of innovation and creativity. The lack of spontaneous collaboration, weakened team dynamics, and increased risk of burnout are significant concerns that cannot be overlooked. To foster a truly innovative environment, companies must consider the importance of in-person interactions and the value of a well-balanced work model. It’s time to rethink the remote work paradigm and strive for a solution that promotes both productivity and innovation.
---
Feel free to share your thoughts and experiences in the comments below. Do you agree that remote work is detrimental to innovation, or do you have a different perspective? Let’s ignite a spirited debate on the future of work!
---
This blog aims to provoke thought and discussion on the impact of remote work on innovation. It's designed to challenge popular opinions and encourage readers to critically assess the long-term implications of remote work on organizational creativity and success.
| callumdev1337 | |
1,878,000 | Git: How to boost your performance | Git is an amazing tool that help us developers a lot to control the version of our projects, it has a... | 27,621 | 2024-06-05T13:06:43 | https://dev.to/henriqueleite42/git-config-5e35 | git, beginners, tutorial, programming | Git is an amazing tool that help us developers a lot to control the version of our projects, it has a lot of build in features, but we can improve it to have a better experience.
In this article, I'll share my configuration of git and a documentation about what each thing does.
## Template
```js
const name = ""
const email = ""
const defaultBranch = "master"
const foo = () => {
if (name === "") {
throw new Error("You must fill your name")
}
if (email === "") {
throw new Error("You must fill your email")
}
console.log(`
# Version: 1.6.0
[user]
name = ${name}
email = ${email}
[init]
defaultBranch = ${defaultBranch}
[pull]
default = current
[push]
default = current
[core]
eol = lf # Defines eol using Linux format
autocrlf = input
[url "ssh://git@github.com/"]
insteadOf = https://github.com/
[alias]
# Clean
gone = "!f() { git fetch -p && git branch -vv | grep 'origin/.*: gone]' | awk '{print $1}' | xargs git branch -D; } ; f" # https://medium.com/darek1024/how-to-clean-local-git-branches-that-were-removed-on-the-remote-4d76f7de93ac
cln = prune -v --progress # Remove Branches That No Longer Exists In Repository
ignore = "!f() { git rm --cached \`git ls-files -i -c --exclude-from=.gitignore\`; } ; f" # Removes Files That Are In .gitignore From The Repository
# Clone
cn = clone # Clone Project
cnsb = "!f() { git clone -b $* $*; } ; f" # Clone specific branch from project
# Fork
updfork = git fetch upstream # Update your fork
# Remote
rls = remote -v # Return a List of All Branches In Repository
rrem = "!f() { git remote remove origin; } ; f" # Remove Origin Repository
radd = "!f() { git remote add origin $*; } ; f" # Add a Repository as Origin
ratt = "!f() { git remote remove origin && git remote add origin $*; } ; f" # Updates the Origin Repository
ups = "!f() { git branch --set-upstream-to=origin/$1 $1; } ; f" # Set Branches Upstream
# ${defaultBranch} Branch
pum = pull origin ${defaultBranch} # Pull From ${defaultBranch}
pom = push origin ${defaultBranch} -u # Push to ${defaultBranch}
# Add
a = add . # Stage All Changes
# Pull
pl = pull # Get Project From Repository
# Push
ps = "!f() { git push -f; } ; f" # Push Changes to Repository
psn = "!f() { git push -f --no-verify; } ; f" # Push Changes to Repository
psu = "!f() { git push --set-upstream; } ; f" # Create a Link Between Local Branch And Repository Branch
acips = "!f() { git a && git ci $* && git ps; } ; f" # Stage Changes, Create Commit And Push To Repository
acaps = "!f() { git a && git ca $* && git ps; } ; f" # Stage Changes, Amend Commit And Push To Repository
acipsn = "!f() { git a && git commit -m \"$*\" --no-verify && git push -f --no-verify; } ; f" # git acips With --no-verify
acapsn = "!f() { git a && git commit --amend -m \"$*\" --no-verify && git push -f --no-verify; } ; f" # Stage Changes, Amend Commit And Push To Repository
# Commit
ci = "!f() { git commit -m \"$*\"; } ; f" # Stage Changes and Create Commit
ca = "!f() { git commit --amend -m \"$*\"; } ; f" # Stage Changes and Amend Commit
author = "!f() { git commit --amend --author=\"${name} <${email}>\"; } ; f" # Change Commit Author
# Branch
b = branch # List All Local Branches
bd = "!f() { git branch -D $*; } ; f" # Delete Local Branch
bn = "!f() { git branch -m $*; } ; f" # Change Branch Name
# Checkout
ckm = "!f() { git checkout ${defaultBranch} && git pull origin ${defaultBranch}; } ; f" # Change To ${defaultBranch} Branch And Git Pull
ckd = "!f() { git checkout dev && git pull origin dev; } ; f" # Change To dev Branch And Git Pull
ckp = "!f() { git checkout $* && git pull; } ; f" # Change Branch And Git Pull
ck = "!f() { git checkout $*; } ; f" # Change Branch
cb = "!f() { git checkout -b $*; } ; f" # Create New Branch
# Rebase
rbd = "rebase dev" # Rebase Actual Branch With dev Branch
rbm = "rebase ${defaultBranch}" # Rebase Actual Branch With ${defaultBranch} Branch
rbh = "!f() { git rebase -i HEAD~$*; } ; f" # Rebase commits (Merge multiple commits in one)
rbc = "!f() { git a && git rebase --continue; } ; f" # Incase of conflict, you will have to fix it, and then, use this command to continue
rmm = "!f() { git rebase -i origin/${defaultBranch}~$* ${defaultBranch}; } ; f" # Merge all the commits of ${defaultBranch} branch
# Stash
sts = stash
sta = stash apply
std = stash drop
stl = stash list
stc = stash clear
# Merge
mg = merge --no-ff
cat = checkout --theirs . # Resolve all conflicts accepting INCOMING changes
cao = checkout --ours . # Resolve all conflicts accepting CURRENT changes
# History
sf = show --name-only
lg = log --pretty=format:'%Cred%h%Creset %C(bold)%cr%Creset %Cgreen<%an>%Creset %s' --max-count=7 # Show the 7 latest commits minified
# Diff
st = status # List Changes
su = "!f() { git status --short | grep --color -E '^(AA|UU)'; } ; f"
ss = "!f() { git status --short | grep --color -E '^(M |A |C )'; } ; f"
incoming = !(git fetch --quiet && git log --pretty=format:'%C(yellow)%h %C(white)- %C(red)%an %C(white)- %C(cyan)%d%Creset %s %C(white)- %ar%Creset' ..@{u})
outgoing = !(git fetch --quiet && git log --pretty=format:'%C(yellow)%h %C(white)- %C(red)%an %C(white)- %C(cyan)%d%Creset %s %C(white)- %ar%Creset' @{u}..)
# Undo
unstage = reset HEAD --
undo = checkout . # Undo Changes
rollback = reset --soft HEAD~1 # Undo last commit
# Transfer
tsf = "!f() { git show $1:$2 > $2 } ; f" # Move changes from a file to another
`)
}
foo()
```
## How to setup
- Copy the template
- Paste it on your browsers console
- Add your name and email to the variables at the beginning of the template
- Execute it
- Copy the output
- Open your `.gitconfig` file, usually at `~/.gitconfig`
- I personally use VSCode, so I can run the command `code ~/.gitconfig` to open it
- Paste the output in there and save
- Restart your terminal to apply the changes
## Documentation
```gitconfig
# Version: 1.4.1
```
This is the version of the gitconfig file (probably it's different from the template, because I'll for sure forget do update it in here, but you get the ideia), to help you know when new things are added or things are fixed.
```gitconfig
[init]
defaultBranch = ${defaultBranch}
```
This is for when you start a new git repository, you default branch is called `master`, you can change it if you want.
```gitconfig
[pull]
default = current
[push]
default = current
```
This defines that wherever you run `git pull` or `git push` it understands that you want to pull/push the current branch and not some other branch.
```gitconfig
[core]
eol = lf # Defines eol using Linux format
autocrlf = input
```
This part is extremely important when you are working in projects where people may use different OS. To know more about it, please here [this article](https://www.aleksandrhovhannisyan.com/blog/crlf-vs-lf-normalizing-line-endings-in-git/).
```gitconfig
[alias]
```
This is the beginning of the [git aliases](https://git-scm.com/book/en/v2/Git-Basics-Git-Aliases) definition.
```gitconfig
# Clean
gone = "!f() { git fetch -p && git branch -vv | grep 'origin/.*: gone]' | awk '{print $1}' | xargs git branch -D; } ; f" # https://medium.com/darek1024/how-to-clean-local-git-branches-that-were-removed-on-the-remote-4d76f7de93ac
cln = prune -v --progress # Remove Branches That No Longer Exists In Repository
ignore = "!f() { git rm --cached \`git ls-files -i -c --exclude-from=.gitignore\`; } ; f" # Removes Files That Are In .gitignore From The Repository
```
These are commands for cleaning your git things.
`gone` [WIP] prunes all the branches that doesn't exists in the remote repository (like GitHub).
`cln` [WIP] prunes all the branches that doesn't exists in the remote repository (like GitHub).
`ignore` remove all the files that were added to `.gitignore`. Ex: You commit `foo.txt` and later adds it to `.gitignore`, it will continue to exists and be tracked by git. To prevent it, you need to run this command.
```gitconfig
# Checkout
ckm = "!f() { git checkout ${defaultBranch} && git pull origin ${defaultBranch}; } ; f" # Change To ${defaultBranch} Branch And Git Pull
ckd = "!f() { git checkout dev && git pull origin dev; } ; f" # Change To dev Branch And Git Pull
ckp = "!f() { git checkout $* && git pull; } ; f" # Change Branch And Git Pull
ck = "!f() { git checkout $*; } ; f" # Change Branch
cb = "!f() { git checkout -b $*; } ; f" # Create New Branch
```
`ckm` change to the `defaultBranch` and runs `git pull`
`ckd` change to the `dev` branch and runs `git pull`
`ckp` change to the branch that you specifies and runs `git pull`
`ck` change to the branch that you specifies (shortcut for `git checkout`)
`cb` creates a new branch and checkouts to it(shortcut for `git checkout -b`)
```gitconfig
# Rebase
rbd = "rebase dev" # Rebase Actual Branch With dev Branch
rbm = "rebase ${defaultBranch}" # Rebase Actual Branch With ${defaultBranch} Branch
rbh = "!f() { git rebase -i HEAD~$*; } ; f" # Rebase commits (Merge multiple commits in one)
rbc = "!f() { git a && git rebase --continue; } ; f" # Incase of conflict, you will have to fix it, and then, use this command to continue
rmm = "!f() { git rebase -i origin/${defaultBranch}~$* ${defaultBranch}; } ; f" # Merge all the commits of ${defaultBranch} branch
```
> WIP
```gitconfig
# Stash
sts = stash
sta = stash apply
std = stash drop
stl = stash list
stc = stash clear
```
Shortcuts to work with [git stash](https://git-scm.com/docs/git-stash).
```gitconfig
# Merge
mg = merge --no-ff
cat = checkout --theirs . # Resolve all conflicts accepting INCOMING changes
cao = checkout --ours . # Resolve all conflicts accepting CURRENT changes
```
> WIP
```gitconfig
# History
sf = show --name-only
lg = log --pretty=format:'%Cred%h%Creset %C(bold)%cr%Creset %Cgreen<%an>%Creset %s' --max-count=7 # Show the 7 latest commits minifiedwhite)- %C(cyan)%d%Creset %s %C(white)- %ar%Creset' @{u}..)
```
Shows the commits history.
> WIP
```gitconfig
# Diff
st = status # List Changes
su = "!f() { git status --short | grep --color -E '^(AA|UU)'; } ; f"
ss = "!f() { git status --short | grep --color -E '^(M |A |C )'; } ; f"
incoming = !(git fetch --quiet && git log --pretty=format:'%C(yellow)%h %C(white)- %C(red)%an %C(white)- %C(cyan)%d%Creset %s %C(white)- %ar%Creset' ..@{u})
outgoing = !(git fetch --quiet && git log --pretty=format:'%C(yellow)%h %C(white)- %C(red)%an %C(white)- %C(cyan)%d%Creset %s %C(white)- %ar%Creset' @{u}..)
```
Shows the difference between a branch and another.
> WIP
```gitconfig
# Undo
unstage = reset HEAD --
undo = checkout . # Undo Changes
rollback = reset --soft HEAD~1 # Undo last commit
```
Undo your changes.
> WIP
```gitconfig
# Transfer
tsf = "!f() { git show $1:$2 > $2 } ; f" # Move changes from a file to another
```
Kinda complicate, but very useful in some cases.
> WIP | henriqueleite42 |
1,878,050 | Scaling(ölçekleme) nedir ? | Yazılım alanında "scaling" (ölçekleme), bir yazılım sisteminin artan yük ve talepleri... | 0 | 2024-06-05T13:06:41 | https://dev.to/mustafacam/scalingolcekleme-nedir--5dlj |
Yazılım alanında "scaling" (ölçekleme), bir yazılım sisteminin artan yük ve talepleri karşılayabilme yeteneğini artırmak için yapılan işlemleri ve stratejileri ifade eder. Ölçekleme, sistemin performansını, güvenilirliğini ve kullanılabilirliğini koruyarak daha fazla kullanıcıya veya işleme kapasitesine hizmet verebilmesi için kritik bir konudur. Ölçekleme genellikle iki ana kategoriye ayrılır: dikey (vertical) ölçekleme ve yatay (horizontal) ölçekleme.
### Dikey Ölçekleme (Vertical Scaling)
Dikey ölçekleme, mevcut bir sunucunun kapasitesini artırarak sistemin ölçeklendirilmesidir. Bu, daha güçlü donanım ekleyerek veya mevcut donanımı iyileştirerek yapılabilir.
- **CPU, RAM ve Disk Alanı Artırma**: Mevcut sunucuya daha fazla CPU, RAM veya disk alanı eklemek.
- **Daha Güçlü Donanım Kullanma**: Daha güçlü bir sunucuya geçmek.
**Avantajları:**
- Daha az karmaşıklık ve yönetim gereksinimi.
- Genellikle mevcut sistem mimarisini değiştirmek gerekmez.
**Dezavantajları:**
- Fiziksel sınırlar vardır; bir sunucunun kapasitesi sınırsız değildir.
- Maliyetler hızla artabilir, özellikle büyük ve güçlü donanım çözümleri kullanıldığında.
### Yatay Ölçekleme (Horizontal Scaling)
Yatay ölçekleme, ek sunucular ekleyerek sistemin ölçeklendirilmesidir. Bu, birden fazla sunucunun birlikte çalışmasını sağlayarak iş yükünü dağıtır.
- **Sunucu Sayısını Artırma**: Yeni sunucular ekleyerek iş yükünü dağıtma.
- **Load Balancer Kullanma**: Gelen trafiği birden çok sunucuya yönlendiren yük dengeleyiciler kullanma.
**Avantajları:**
- Daha fazla esneklik ve sınırsız ölçeklendirme potansiyeli.
- Arıza toleransı ve yüksek erişilebilirlik sağlar, çünkü bir sunucu arızalandığında diğerleri hizmet vermeye devam edebilir.
**Dezavantajları:**
- Daha fazla karmaşıklık ve yönetim gereksinimi.
- Uygulamaların ve veritabanlarının dağıtık yapıya uygun olması gerekir.
### Ölçekleme Stratejileri
1. **Otomatik Ölçekleme (Auto-Scaling)**: Sistem kaynaklarının otomatik olarak artan veya azalan talebe göre ayarlanması.
2. **Veritabanı Ölçekleme**: Veritabanlarının performansını artırmak için bölümlere ayırma (sharding), replikasyon ve önbellekleme (caching) gibi teknikler kullanma.
3. **Mikro Hizmetler (Microservices)**: Uygulamayı küçük, bağımsız hizmetlere bölerek her birinin bağımsız olarak ölçeklenebilmesini sağlama.
### Ölçeklemenin Önemi
- **Performans**: Yüksek talep altında bile sistemin hızlı ve yanıt verebilir kalmasını sağlar.
- **Güvenilirlik**: Sistem arızalarına karşı dayanıklılığı artırır.
- **Esneklik**: Kullanıcı tabanı veya iş yükü arttıkça sistemin genişletilmesini kolaylaştırır.
- **Maliyet Verimliliği**: İhtiyaç duyulduğunda kaynakları artırma veya azaltma imkanı vererek maliyetlerin kontrol altında tutulmasını sağlar.
Özetle, yazılım alanında ölçekleme, bir sistemin büyüyen iş yükünü ve kullanıcı taleplerini karşılayacak şekilde genişletilmesi ve optimize edilmesidir. Hem dikey hem de yatay ölçekleme stratejileri, farklı senaryolara ve ihtiyaçlara göre tercih edilir ve uygulanır. | mustafacam | |
1,878,049 | Demystifying Algo Trading: What To Expect From Algo Trading Courses In India | Algorithmic trading, often referred to as algo trading, has become a prominent feature in financial... | 0 | 2024-06-05T13:05:25 | https://dev.to/iiqfreview/demystifying-algo-trading-what-to-expect-from-algo-trading-courses-in-india-1b2k | algo, trading, machinelearning | [Algorithmic trading](https://www.iiqf.org/courses/post-graduate-program-algorithmic-trading.html), often referred to as algo trading, has become a prominent feature in financial markets worldwide. In India, with the rise of technology and increased participation in the stock market, algo trading has gained significant traction. But what exactly is algo trading, and what can one expect from algo trading courses in India?
## Understanding Algorithmic Trading
At its core, algorithmic trading involves the use of computer algorithms to execute trading strategies automatically. These algorithms are programmed to analyse market data, identify trading opportunities, and execute trades at optimal prices and speeds. Algo trading relies heavily on quantitative analysis, statistical models, and computational techniques to make trading decisions.
The key advantages of algo trading include speed, accuracy, and the ability to execute trades without human intervention. By leveraging algorithms, traders can react to market conditions swiftly, exploit inefficiencies, and manage risk more effectively.
## Significance of Algo Trading in India
In India, algo trading has witnessed exponential growth, driven by technological advancements, regulatory changes, and increasing market participation. The introduction of high-speed internet, electronic trading platforms, and algorithmic infrastructure has revolutionized the Indian stock market.
Algo trading has democratized trading by enabling retail investors and small traders to access sophisticated trading strategies previously available only to institutional investors. It has also enhanced market liquidity, tightened bid-ask spreads, and facilitated price discovery.
Furthermore, regulatory initiatives such as co-location facilities, direct market access, and algorithmic trading guidelines issued by the Securities and Exchange Board of India (SEBI) have fostered the growth of algo trading in India.
## What to Expect from Algo Trading Courses in India
Given the growing demand for algo trading skills, numerous educational institutions and training providers in India offer algo trading courses. These courses cater to individuals ranging from beginners with no prior knowledge of trading to seasoned professionals looking to enhance their skills. Here's what one can expect from algo trading courses in India:
**1. Fundamentals of Algorithmic Trading**
Algo trading courses typically start by covering the fundamentals of algorithmic trading, including its definition, history, and key concepts. Participants learn about different types of trading strategies, such as trend-following, mean-reversion, and arbitrage, and how algorithms are used to implement these strategies.
**2. Quantitative Analysis and Programming**
Quantitative analysis forms the backbone of algo trading. Courses often delve into quantitative methods, statistical models, and mathematical techniques used in trading strategy development. Participants learn programming languages like Python, R, or MATLAB, along with relevant libraries and tools for data analysis and algorithm development.
**3. Market Microstructure and Data Analysis**
Understanding market microstructure is essential for successful algo trading. Courses cover topics such as order types, market liquidity, order routing, and execution algorithms. Participants learn how to analyse market data, including historical price data, order book data, and tick-by-tick data, to identify trading opportunities and develop strategies.
**4. Risk Management and Backtesting**
Risk management is a critical aspect of algo trading. Courses emphasize the importance of risk management techniques, position sizing, and portfolio optimization to mitigate trading risks. Participants also learn about backtesting, a process of testing trading strategies on historical data to evaluate their performance and robustness.
**5. Regulatory and Ethical Considerations**
Algo trading courses in India often cover regulatory and ethical considerations associated with algorithmic trading. Participants learn about SEBI regulations, compliance requirements, market surveillance, and ethical guidelines for algorithmic trading. Understanding these aspects is crucial for responsible and ethical trading practices.
**6. Practical Application and Simulation**
Hands-on experience is an integral part of algo trading courses. Participants get the opportunity to apply theoretical knowledge in practical trading simulations using real-time market data. These simulations help participants gain insights into algorithmic trading strategies, execution techniques, and market dynamics.
**7. Industry Insights and Case Studies**
Algo trading courses often include industry insights and case studies to provide practical examples of successful trading strategies and real-world challenges faced by algo traders. Guest lectures from industry experts and practitioners offer valuable perspectives and insights into the evolving landscape of algo trading.
## Conclusion: Empowering Traders with Algo Trading Skills
Algo trading courses in India play a crucial role in empowering traders with the skills and knowledge needed to succeed in today's dynamic financial markets. By demystifying algo trading and providing comprehensive training in quantitative analysis, programming, and market dynamics, these courses equip participants to develop and implement sophisticated trading strategies.
As algo trading continues to evolve and shape the future of financial markets in India, the demand for skilled algo traders is expected to rise. Algo trading courses offer a pathway for individuals to enter this exciting field, whether they are aspiring traders, finance professionals, or technologists seeking to leverage their skills in the financial domain. With the right education and training, anyone can unlock the potential of algo trading and navigate the complexities of modern finance with confidence. | iiqfreview |
1,878,047 | Streamlining Trade Operations with Intelligent Document Processing (IDP) | Greetings, fellow developers! Today, we'll delve into the exciting world of international trade and... | 0 | 2024-06-05T12:59:47 | https://dev.to/john_hall/streamlining-trade-operations-with-intelligent-document-processing-idp-1hpi | ai, automation, learning | Greetings, fellow developers! Today, we'll delve into the exciting world of international trade and how Intelligent Document Processing (IDP) can revolutionize this crucial sector.
For those unfamiliar, international trade thrives on efficiency. However, navigating complex regulations and ensuring swift document processing can be a nightmare. Manual data entry from customs documents remains a time-consuming and error-prone task, leading to delays, higher costs, and even compliance issues.
## IDP to the Rescue!
This is where IDP emerges as a powerful solution. By automating data capture and processing, IDP empowers businesses in the international trade and customs sector. Let's explore [IDP leverages technology](https://www.icustoms.ai/blogs/idp-intelligent-document-processing/).
## streamline operations:
Automated Data Extraction: IDP utilizes machine learning algorithms to extract data from various customs documents with high accuracy. This eliminates the need for manual entry, saving developers and data analysts valuable time.
Enhanced Workflow Integration: Modern IDP solutions can integrate seamlessly with existing trade management systems. This allows for automatic data transfer and reduces the need for manual data manipulation.
Improved Error Handling: IDP can identify inconsistencies and potential errors in documents, flagging them for human review. This proactive approach ensures data quality and reduces the risk of errors slipping through the cracks.
## Benefits Beyond Automation:
While automation is a core strength, IDP offers additional advantage
s:
Scalability: IDP solutions can scale to accommodate increasing document volumes, ensuring smooth operations even during peak trade periods.
Compliance Management: IDP can assist in extracting relevant data from trade agreements and regulations, simplifying compliance management for businesses.
Data Analytics Potential: The extracted data from IDP can be used for further analysis, providing valuable insights into trade patterns and optimizing operations.
## Exploring IDP Development:
For developers interested in the technical aspects of IDP, there are various open-source frameworks and libraries available. These tools enable developers to build custom IDP solutions tailored to specific trade document formats and business needs.
## The Future of Trade is Automated
IDP technology represents a significant advancement in international trade. By streamlining workflows, boosting efficiency, and ensuring compliance, IDP offers a compelling return on investment. As developers, we can leverage this technology to build robust solutions and empower businesses to navigate the ever-evolving landscape of international trade.
## Let's Explore More!
Have you explored IDP in your projects? You can read more about [IDP and How it's increasing ROI of businesses](https://www.icustoms.ai/blogs/improve-trade-customs-roi-idp-technology-automation/) here. | john_hall |
1,878,039 | Proxy | Proxy sunucusu, iki bilgisayar veya bir bilgisayar ile bir internet kaynağı arasında aracı görevi... | 0 | 2024-06-05T12:51:34 | https://dev.to/mustafacam/proxy-3e40 | 
Proxy sunucusu, iki bilgisayar veya bir bilgisayar ile bir internet kaynağı arasında aracı görevi gören bir sunucudur. Dikkat edersen client ile internet arasında bir sunucu diyor. Daha karşı sunucuya gitmedik. Bu aracı sunucu, istemci (kullanıcı) ile hedef sunucu (kaynak) arasında iletişimi sağlar. Proxy sunucuları çeşitli amaçlar için kullanılabilir, örneğin:
1. **Gizlilik ve Anonimlik**: Proxy sunucuları, kullanıcının IP adresini gizleyerek anonim kalmasını sağlar. Kullanıcı, internete proxy sunucusu üzerinden bağlandığında, hedef sunucu kullanıcının gerçek IP adresini değil, proxy sunucusunun IP adresini görür.
2. **Erişim Kontrolü**: Proxy sunucuları, belirli internet sitelerine veya hizmetlere erişimi kontrol edebilir. Örneğin, bir iş yeri veya okul, çalışanlarının veya öğrencilerinin belirli sitelere erişimini sınırlamak için proxy sunucuları kullanabilir.
3. **Önbellekleme**: Proxy sunucuları, sık kullanılan web sayfalarının kopyalarını önbelleğe alarak erişim sürelerini hızlandırabilir. Kullanıcı aynı sayfaya tekrar erişmek istediğinde, sayfa doğrudan proxy sunucusundan yüklenir, böylece ağ trafiği ve yükleme süresi azalır.
4. **Güvenlik**: Proxy sunucuları, zararlı web sitelerini veya içerikleri filtreleyerek kullanıcıların güvenliğini artırabilir. Ayrıca, şirketler iç ağlarını dış tehditlere karşı korumak için proxy sunucuları kullanabilirler.
5. **İçerik Filtreleme**: Proxy sunucuları, belirli içerik türlerini engelleyebilir veya belirli içerik türlerine öncelik verebilir. Bu, kullanıcıların uygun olmayan içeriklere erişimini kısıtlamak için kullanılabilir.
Proxy sunucularının farklı türleri vardır, örneğin:
- **İletici Proxy (Forward Proxy)**: Kullanıcı ile internet arasında bulunur ve kullanıcının isteklerini hedef sunucuya iletir.
- **Ters Proxy (Reverse Proxy)**: İnternet ile hedef sunucu arasında bulunur ve gelen istekleri hedef sunucuya iletir. Genellikle, web sunucularının güvenliğini ve performansını artırmak için kullanılır.
Proxy sunucuları, çeşitli ağ yapılandırmalarında farklı ihtiyaçları karşılamak üzere özelleştirilebilir ve yapılandırılabilir.
| mustafacam | |
1,878,046 | Day 5 of #90daysofdevops Advanced Linux Shell Scripting for DevOps Engineers with User Management | 1. Write a bash script create directories.sh that when the script is executed with three given... | 0 | 2024-06-05T12:59:41 | https://dev.to/oncloud7/day-5-of-90daysofdevops-advanced-linux-shell-scripting-for-devops-engineers-with-user-management-2lg2 | shellscripting, linux, cloudcomputing, devops | **1. Write a bash script create directories.sh that when the script is executed with three given arguments (one is the directory name and the second is the start number of directories and the third is the end number of directories ) it creates specified number of directories with a dynamic directory name.**
Write a shell script to create 10 directory day{1..10}
create file` createDirectories.sh`
```
#!/bin/bash
directory_name=$1
start=$2
end=$3
for ((i=start; i<=end; i++))
do
mkdir "$directory_name$i"
done
```
**2. create a Script to backup all your work done till now**
Creating a daily backup script involves copying or archiving important files to a backup location. Here's a simple example of a backup script using the rsync command, which is commonly used for file synchronization and backup:
```
#!/bin/bash
# Source directory (the directory you want to back up)
source_dir="/home/Priyanka"
# Destination directory (the backup location)
backup_dir="/home/backup"
# Create a backup directory with the current date
backup_subdir="$backup_dir/backup_$(date +\%Y-\%m-\%d)"
mkdir -p "$backup_subdir"
# Perform the backup using rsync
rsync -av "$source_dir/" "$backup_subdir/"
echo "Backup completed successfully to $backup_subdir."
```
Make the script executable:
chmod +x backup_script.sh
You can run this script daily using a scheduling tool like cron. For example, to run it every day at a specific time, you can add an entry to your crontab:
```
crontab -e
```
The string 0 2 * is a cron expression that specifies when to run the command. In this case, it means "run the command at 2:00 AM every day".
```
0 2 * * * /path/to/backup_script.sh
```
**3. Read About Cron and Crontab, to automate the backup Script**
**What is cron and crontab?**
cron is a time-based job scheduler in Linux and Unix-like operating systems. It runs in the background and is responsible for scheduling tasks or jobs (also called "cron jobs") to run at specific times and intervals.
crontab is the configuration file used to specify the cron jobs to be run. The name "crontab" comes from the combination of "cron" (the scheduler) and "table" (the configuration file).
The crontab file is a simple text file that contains a list of commands meant to be run at specified times. Each line of the crontab file represents a single cron job, and has six fields separated by spaces or tabs. These fields specify the minute, hour, day of the month, month, day of the week, and the command to be run
**4. Read about User Management**
A user is an entity, in a Linux operating system, that can manipulate files and perform several other operations.👨🏻 Each user is assigned an ID that is unique for each user in the operating system. In this post, we will learn about users and commands which are used to get information about the users. After installation of the operating system, the ID 0 is assigned to the root user and the IDs 1 to 999 (both inclusive) are assigned to the system users and hence the ids for local user begins from 1000 onwards.
Simplifying User Management: 👨💼👩💼 User management in Linux involves creating and managing user accounts. To create two users and display their usernames:
**5. Create 2 users and just display their Usernames**
```
sudo useradd user1
sudo useradd user2
echo "User A: $(id -un user1)"
echo "User B: $(id -un user2)"
```
| oncloud7 |
1,410,997 | ✨ 10 useful webdev insight & learning resources! | Introduction In this post, I'll give you ten useful resources specific for web... | 22,289 | 2024-06-05T12:58:38 | https://dev.to/thexdev/10-useful-webdev-insight-learning-resources-eoe | webdev, javascript, productivity, tutorial | ## Introduction
In this post, I'll give you ten useful resources specific for web development.
All provided resources below are not definitely (step-by-step) tutorial for web dev. Instead, it's a guide to build secure, accessible and performant modern web application.
The main subjects of this post are:
- Web accessibilty (WAI-ARIA)
- Web APIs
- Progressive Web Apps
- Web Security
- SEO (included Structured Data)
- Design Patterns
- Performant Measurement
- Tools & Debugging Techniques
- HTML & CSS Syntax References
- And many more...
Based on the covered subjects, I hope you already learned the basic of web development. If not, don't worry. You can read these all for your reference tomorrow 😉.
## Resources
### [WEB.DEV](https://web.dev/)
Web.dev is a guidance from Chrome Developer Relations. They want to help you build beautiful, accessible, fast, and secure websites that work cross-browser, and for all of your users.
This site is our home for content to help you on that journey, written by members of the Chrome team, and external experts.
What's included?
- **Blog**. Latest news, updates, and stories for developers.
- **Learn**. An industry expert has written each course, helped by members of the Chrome team.
- **Explore**. Structured learning paths to discover everything you need to know about building for the modern web.
- **Case Studies**. Learn why and how other developers have used the web to create amazing web experiences for their users.
### [MDN](https://developer.mozilla.org/en-US/)
MDN Web Docs is an open-source, collaborative project documenting Web platform technologies, including CSS, HTML, JavaScript, and Web APIs.
What's included?
- References. The docs for web APIs, accessibility, security, performance, etc.
- Guides. Step-by-step learn web development. The aim of this area of MDN is not to take you from "beginner" to "expert" but to take you from "beginner" to "comfortable".
### [Chrome Developer](https://developer.chrome.com/en/)
The Chrome's official site to help you build Extensions, publish on the Chrome Web Store, optimize your website, and more.
What's included?
- **Docs**. The documentation of Chrome's tools & library, extension & web store, architecture, and infrastructure.
- **Blog**. Latest update of Chrome and web technologies.
- **Articles**. Latest research of Chrome's team and other insightful write.
### [Google Search Central](https://developers.google.com/search)
Google Search Central is here to help the right people view your content with resources to make your website discoverable to Google Search.
What's included?
- SEO fundamentals.
- Crawling and indexing.
- Ranking and search appearance.
- Site-specific guides.
### [CSS Tricks](https://css-tricks.com/)
CSS-Tricks is a renowned online platform dedicated to everything related to Cascading Style Sheets (CSS) and front-end web development. Established by Chris Coyier in 2007, CSS-Tricks has evolved into a comprehensive resource hub for web designers and developers seeking to enhance their skills, stay updated with the latest trends, and find solutions to their CSS-related queries.
What's included?
- **Articles and Tutorials.** CSS-Tricks offers a plethora of articles and tutorials covering a wide range of topics, from basic CSS techniques to advanced front-end development concepts.
- **Code Snippets.** Developers can find ready-to-use code examples for common UI patterns, layout designs, and CSS tricks, saving them time and effort in their projects.
- **Almanac.** The CSS-Tricks Almanac serves as a comprehensive reference guide for CSS properties, selectors, functions, and other essential concepts.
- **News and Updates**. CSS-Tricks keeps its audience informed about the latest trends, tools, and updates in the world of front-end development through regular news articles and curated content.
### [JavaScript Info](https://javascript.info/)
Your gateway to mastering the art of JavaScript programming! Dive into the world of JavaScript and unlock its full potential with our comprehensive resources and guidance.
What's included?
- **Exploring Tutorials.** Embark on a journey through our extensive collection of tutorials, meticulously crafted to guide you through the intricacies of JavaScript programming.
- **Consulting the Reference Materials.** Comprehensive reference materials to deepen your understanding of JavaScript syntax, methods, and objects.
- **Exploring ES6+ Features.** Stay up-to-date with the latest advancements in JavaScript by exploring ES6+ features such as arrow functions, template literals, and destructuring assignments.
### [HTML Reference](https://htmlreference.io/)
Your ultimate guide to mastering HTML and harnessing its full potential in web development! HTMLReference.io is a comprehensive online resource dedicated to providing detailed documentation, examples, and best practices for HTML elements and attributes.
What's included?
- **Exploring HTML5 Features.** Stay ahead of the curve with our coverage of HTML5 features and enhancements. From semantic elements like "header" and "footer" to multimedia elements like "video" and "audio".
- **Understanding Attributes.** Unravel the mysteries of HTML attributes with our in-depth explanations and usage examples. From common attributes like "id" and "class" to more advanced attributes like "data-" and "aria-".
- **Quick Reference Guides.** Access quick reference guides for common HTML tasks and scenarios, such as creating forms, embedding multimedia content, and structuring web pages.
### [Patterns](https://www.patterns.dev/)
The brainchild of the legendary [Addy Osmani](https://addyosmani.com/), where cutting-edge design meets practical implementation in the world of web development! Patterns is a premier online resource dedicated to showcasing innovative design patterns, architectural principles, and best practices curated by Addy Osmani and his team of experts.
What's included?
- **Exploring Design Patterns.** Delve into the world of design patterns with Patterns, where you'll discover a treasure trove of tried-and-tested solutions to common design challenges.
- **Architectural Principles.** Unlock the secrets of scalable, maintainable architecture with our in-depth exploration of architectural principles.
- **Best Practices and Guidelines.** Navigate the complexities of modern web development with confidence, armed with our collection of best practices and guidelines.
### [Can I use...](https://caniuse.com/)
Your trusty companion in the ever-evolving landscape of web development compatibility! "Can I Use" is a renowned online tool that provides comprehensive information about web browser support for HTML, CSS, JavaScript features, and more.
What's included?
- **Browser Compatibility Made Easy.** Navigating browser compatibility can be a daunting task, but fear not! "Can I Use" simplifies the process by offering clear and concise information about which web technologies are supported by various browsers.
- **Extensive Database of Features.** Explore our extensive database of web features, including HTML elements, CSS properties, JavaScript APIs, and more.
- **Historical Data and Trends.** Track the evolution of web browser support over time with our historical data and trends.
#### [Figma Community](https://figma.com/community)
Where creativity knows no bounds and collaboration thrives! The Figma Community is an innovative platform that brings together designers, creators, and design enthusiasts from around the world to share, discover, and collaborate on design projects using Figma's powerful tools.
What's included:
- **Explore and Discover.** Discover a treasure trove of design resources, including UI kits, icon sets, illustrations, and more, created by talented designers within the Figma Community.
- **Stay Inspired.** Stay inspired and up-to-date with the latest design trends, techniques, and industry insights by following your favorite creators and joining design communities within Figma Community.
- **Contribute to Open Source.** Contribute to the world of open-source design by sharing your design assets, components, and templates with the broader design community.
## Summary
In conclusion, these ten web development resources offer a diverse range of tools and opportunities for designers and developers to enhance their skills, find inspiration, and collaborate with others in the industry.
From vibrant communities to comprehensive design libraries, these platforms empower creativity, foster collaboration, and provide invaluable insights for individuals at every stage of their web development journey.
Whether you're seeking to showcase your work, explore new techniques, or contribute to the global design community, these resources offer a wealth of knowledge and learning opportunities to help you succeed in the ever-evolving world of web development.
See ya! | thexdev |
1,878,043 | Top 21+ Best VOD Platforms To Build Your Video-On-Demand Business in 2024 | As the world of entertainment continues to evolve, more and more people are turning to... | 0 | 2024-06-05T12:57:18 | https://dev.to/rahulatwebnexs/top-21-best-vod-platforms-to-build-your-video-on-demand-business-in-2024-3g24 | videoondemand, bestvodplatforms | As the world of entertainment continues to evolve, more and more people are turning to video-on-demand(VOD)platforms to watch their favorite TV shows, movies, and other content. VOD platforms allow users to stream content on demand, at their own pace, and on their own schedule. With so many VOD platforms available, it can be challenging to decide which one to choose. In this article, we will take a closer look at the top 21 best VOD platforms available today.
Table of Contents:
What Is a VOD Platform?
How it Video on demand platforms Work?
How do businesses use VOD Platforms?
What Are The Features Of Best VOD Platforms?
What Is a VOD Platform?
A Video on Demand (VOD) platform is a service that allows users to access and watch video content on-demand, at any time and from anywhere. This technology has revolutionized the way we consume video content, providing a flexible and personalized viewing experience. With [best VOD platform](https://blog.webnexs.com/top-21-best-vod-platforms-and-providers-in-2024/)s users can watch their favorite movies, TV shows, and documentaries without being bound by traditional broadcasting schedules.
Some popular examples of streaming services that use the VOD model include:
Netflix
Hulu
Disney+
Prime Video
VOD platforms make use of OTT streaming. OTT streaming allows you to watch movies and shows online whenever you want. You don’t need a regular cable or satellite TV subscription for these services. Instead, they use the internet to deliver the content to your devices.
How it Video on demand platforms Work?
Here’s a simpler explanation of how Video on Demand (VOD) works:
For Your Audience:
-VOD is like a digital video library that your viewers can access.
They can pick and watch any video from this library whenever they want.
Some VOD libraries are free, while others may require you to log in or pay.
-VOD lets your audience watch videos at their own convenience.
Behind the Scenes for Your Business:
Online VOD uses OTT technology. It uses streaming protocols.
This tech compresses and then decompresses your videos for smooth online video streaming services.
-VOD platforms handle all this technical stuff for you.
They also help organize your videos with tags and descriptions so people can easily find them.
Different Uses for Best VOD Platforms:
VOD is used not just for entertainment but also for education and training.
Businesses use it for internal training videos.
Schools use it for lectures and presentations, especially for remote learning.
VOD lets you share pre-made and carefully selected content, while live streaming is more raw since it’s happening in real-time.
In a nutshell, VOD is like an online video library that’s easy for your audience to access, and it uses special technology to make sure your videos play smoothly on the internet. It’s not just for fun; it’s also great for learning and training.
How do businesses use VOD Platforms?
Professionals use Video on Demand (VOD) for various reasons in businesses, schools, and other organizations. Here are some of its key uses:
Recapping Important Events: VOD helps recap and save important events, making them available for future reference.
Sharing Pre-recorded Lectures: It allows the sharing of pre-recorded lectures, making learning materials accessible anytime.
Standardizing Corporate Training: VOD is used to create consistent and standardized corporate training programs.
Generating Revenue through Entertainment: Some use VOD to build platforms that make money by offering entertainment content.
The possibilities for VOD are extensive, and these examples just scratch the surface. Here are some trends that highlight the value of on-demand video content:
About 27% of internet users watch over 10 hours of online video each week.
Approximately 86% of businesses use video content in their marketing strategies.
Websites with video content keep users engaged for longer compared to those without videos.
Approximately 50% of people search for a video of a product before making an in-store purchase.
Video content is more effective at conveying a brand’s message compared to text, photos, or static content.
In essence, VOD is just one type of online video content with various applications in the professional world.
What Are The Features Of Best VOD Platforms?
Here’s a simplified version of the top features to look for in a professional-grade Video on Demand (VOD) platform:
Video CMS (Content Management System):
A video CMS helps you organize your video library by tagging and categorizing videos. This makes it easier for you and your viewers to find content. It can also create smart playlists to recommend similar content to viewers.
VOD Transcoding:
With VOD transcoding, your business’s on-demand VOD platforms allow users to automatically adjust video quality based on the viewer’s device and internet connection. This ensures the best viewing experience without manual file conversion.
Video Monetization:
VOD platforms offer different ways to make money from your videos. You can choose from Subscription Video on Demand (SVOD), where viewers pay a monthly fee for unlimited access; Transactional Video on Demand (TVOD), where users pay for individual pieces of content; or Advertising-Based Video on Demand (AVOD), where content is free but includes ads.
White-Label Video Player:
A white-label player allows you to customize the video player with your branding, removing third-party logos. It also enables easy embedding on your white-label solutions and sharing on social media.
Video Security:
VOD platforms provide security features like HTTPS for secure data transmission, domain and geographical restrictions to control where content can be played, password protection for restricted access, and SSL encryption for safe payment processing.
| rahulatwebnexs |
1,878,041 | Understanding gRPC: A Modern Approach to Remote Procedure Calls | Introduction Remote Procedure Call (RPC) is a fundamental concept in modern distributed... | 0 | 2024-06-05T12:55:58 | https://dev.to/arefin6/understanding-grpc-a-modern-approach-to-remote-procedure-calls-59c | grpc, microservices, distributedsystems, developertools | ## **Introduction**
Remote Procedure Call (RPC) is a fundamental concept in modern distributed systems, enabling different components to communicate seamlessly over a network. One of the emerging technologies revolutionizing RPC is gRPC. In this blog post, we will explore the basics of gRPC, its key features, and why it has gained popularity among developers.
## What is gRPC?
gRPC, short for Google Remote Procedure Call, is an open-source framework that facilitates efficient and scalable inter-service communication. It uses the Protocol Buffers (protobuf) language to define services and message types, providing a language-agnostic way of defining the structure of the data being exchanged.
## **Why gRPC?**
**Modern and Efficient**: gRPC utilizes HTTP/2 as its underlying protocol, enabling lightweight and high-performance communication between services. It supports multiplexing, bidirectional streaming, and server-side streaming, allowing efficient data transfer.
**Language Support**: gRPC supports multiple programming languages, including Java, Python, Go, and more. This flexibility enables developers to build microservices using their preferred programming language, promoting code reuse and interoperability.
Code Generation: gRPC leverages protobuf to define service contracts and generate code bindings for different languages. This feature reduces the complexity of writing boilerplate code and ensures type safety across services.
**Bi-directional Communication**: gRPC supports both unary and streaming communication. With unary calls, clients send a single request and receive a single response. Streaming calls allow real-time bidirectional communication, enabling scenarios such as chat applications or continuous data streaming.
**Interoperability**: Along with its ability to generate code bindings for different languages, gRPC provides compatibility with existing systems through the use of gateways and proxies. This allows services built with gRPC to communicate with traditional RESTful APIs seamlessly.
## **Conclusion**:
gRPC is a modern and efficient RPC framework that simplifies inter-service communication in distributed systems. Its support for multiple languages, code generation capabilities, and flexible communication patterns make it a powerful tool for building scalable and interoperable microservices. By adopting gRPC, developers can enhance the performance and reliability of their distributed applications while reducing development time and effort.
So, whether you're building a microservices architecture, IoT systems, or distributed applications, gRPC is a technology worth exploring. Its simplicity, efficiency, and extensive language support make it an excellent choice for modern RPC needs.
Remember, embracing new technologies like gRPC can unlock limitless possibilities and empower developers to create robust and scalable distributed systems.
Happy coding! | arefin6 |
1,878,040 | CSS Art: June - 14 de Junho Dia Mundial do Doador de Sangue | This is a submission for Frontend Challenge v24.04.17, CSS Art: June. ... | 0 | 2024-06-05T12:54:05 | https://dev.to/hmontarroyos/css-art-june-14-de-junho-dia-mundial-do-doador-de-sangue-9fj | frontendchallenge, devchallenge, css, frontend | _This is a submission for [Frontend Challenge v24.04.17](https://dev.to/challenges/frontend-2024-05-29), CSS Art: June._
## Inspiração
Aproveitando o tema livre para escolher algo que represente o mês de junho, podendo ser um lugar, lembrança ou até mesmo uma data, eu resolvi aproveitar para colocar esse tema em pauta que é tão importante e ajuda a salva milhões de vida por ano, que é o de doar sangue, e nada melhor do que aproveitar para falar e exaltar a todos os que se propõem a doar um pouco do que tem, para salvar vidas em todo mundo, não podia deixar passar essa data, que inclusive é a mesma do meu aniversário, e com isso tenho muito orgulho do movimento e apoio a todos que doam ;)
## Demo
{% codepen https://codepen.io/hmontarroyos/pen/RwmVejM %}
## Inspiração
Pensando no dia mundial do doador de sangue, eu pensei em enfatizar o órgão responsável por fazer todo o bombeamento de sangue no nosso corpo, o mais importante para termos vida ou um dos mais, a partir dae achei interessante que fosse feito usando inteiramente o css.
Para isso eu utilizei das _pseudo-classes_ **before** e **after** para criar as formas e para a animação trabalhei muito com os **transforms** dentro dos meus **keyframes** para criar toda essa animação de parecer que o coração está pulsando, alternando no seu tamanho de tempo em tempos e deixando com um time de infinite, para ser constante.
Feito essa parte que seria talvez a mais chamativa queria dar uma mensagem de conscientização, mas que não fosse apenas uma mensagem, mas algo funcional sem precisar ser uma aplicação grande seguindo o conceito se _SPA_, para isso adicionei um button e estilizei ele para que ficasse com a paleta que escolhi usando algumas fontes gratuitas no [google fonts](https://fonts.google.com/), com o link de redirecionar para a página do [Hemorio](https://www.hemorio.rj.gov.br/) que é uma instituição localizada aqui no estado do Rio de Janeiro no Brasil, que recolhe doação de sangue para o banco de sangue daqui.
Para o background achei interessante colocar uma imagem de fundo em vetor, que representa bem a mensagem da doação ser algo mundial e que independente de cor, gênero, religião entre outros, somos todos iguais, e isso só mostra que devemos nos unir em prol de salvar inúmeras vidas.
Além disso, queria colocar uma mensagem final e para isso nada melhor que a frase:
_"Doe sangue, salve vidas. Seja a esperança hoje!"_
E para combinar com essa frase animei usando o **animation**, para dar aquela impressão que tinha alguém digitando, além disso, achei interessante controlar essa animação com **JavaScript** para que pudesse aumentar ou diminuir o time da animação, para isso criei uma função que acessa o meu seletor ali na minha DOM e com o **setTimeout** define um time de animação.
Achei também para que não ficar um vazio a aplicação ficaria bacana com um Header bem sutil, e para isso eu fiz usando novamente os **keyframes** para alterar as cores da nossa paleta imitando uma artéria.
É isso galera espero que curtam, e lembre-se não só dia 14 de junho, mas todos os dias que quiserem os postos de cada cidade ficam sempre buscando novos doadores.
Grande abraço a todos e espero que curtam, todo o código segue livre no [CodePen](https://codepen.io/hmontarroyos/pen/RwmVejM?editors=1010).
| hmontarroyos |
1,878,038 | Optimizing Your Magento 2 Upgrade for Performance | Upgrading your Magento store to version 2 is a strategic move, promising a bounty of benefits –... | 0 | 2024-06-05T12:50:31 | https://dev.to/developerbhavi/optimizing-your-magento-2-upgrade-for-performance-3coo | magento, magento2upgrade | Upgrading your Magento store to version 2 is a strategic move, promising a bounty of benefits – enhanced security, improved scalability, and access to cutting-edge features. But wait, there's more! By optimizing your Magento 2 Upgrade Service, you can unlock the true potential of your upgraded store, transforming it into a performance powerhouse.
**Pre-Upgrade Prep:** Setting the Stage for Speed
A successful optimization journey starts before the upgrade itself. During your Magento 2 Upgrade Service, your partner should conduct a thorough performance audit. This audit identifies bottlenecks and inefficiencies within your existing store, providing a roadmap for optimization during the upgrade process.
**Streamlining Your Data:** Less Bloat, More Speed
Large, unoptimized databases can significantly hinder performance. Your Magento 2 Upgrade Service provider can help you identify and remove unnecessary data, such as old abandoned carts or outdated product information. Additionally, data migration strategies should focus on optimized table structures, ensuring smooth retrieval of information post-upgrade.
**Caching Your Way to Victory**
Caching plays a crucial role in website speed. By partnering with a provider experienced in Magento 2 Upgrade Services, you can leverage advanced caching mechanisms. These mechanisms temporarily store frequently accessed data, minimizing database load times and significantly improving page load speeds for your customers.
**Code Optimization: A Developer's Touch**
Upgrading to Magento 2 opens doors to a plethora of performance-enhancing code optimizations. Your Magento 2 Upgrade Service provider should have a team of skilled developers who can identify and address inefficient code within your theme and extensions. Additionally, they can implement best practices like code minification and lazy loading to further streamline your store's performance.
**Post-Upgrade Polish: Monitoring and Maintaining Momentum**
The optimization journey doesn't end with the upgrade. Your Magento 2 Upgrade Service provider should offer ongoing monitoring and maintenance services. This ensures your store remains optimized, continues to deliver lightning-fast performance, and adapts seamlessly to future Magento updates.
**The Road to Performance Paradise**
By incorporating these optimization strategies into your [Magento 2 Upgrade Service](https://www.wagento.com/magento-upgrade-service/), you can transform your upgraded store into a speed demon. Remember, a well-optimized Magento 2 store keeps customers engaged, increases conversion rates, and fuels your eCommerce success. So, don't just upgrade – optimize for peak performance and watch your business soar!
| developerbhavi |
1,870,649 | List of 50+ organizations on DEV creating valuable content | It is hard to find organizations on DEV, and I've noticed that they don't receive followers that... | 0 | 2024-06-05T12:48:40 | https://dev.to/anmolbaranwal/list-of-50-organizations-on-dev-creating-valuable-content-2446 | discuss, writing, beginners, learning | It is hard to find organizations on DEV, and I've noticed that they don't receive followers that easily.
A lot of those organizations are open source.
So, I thought of creating a list of all the awesome organizations on DEV.
---
Please note that there is no order as each organization is good in what they do.
If you know any other organizations, just comment, and I'll add them quickly.
The only rule is that the organization must have posted at least twice (no exceptions).
Let's do it :)
---
## List of Organizations on DEV
{% embed https://dev.to/copilotkit %}
<figcaption></figcaption>
{% embed https://dev.to/taipy %}
<figcaption></figcaption>
{% embed https://dev.to/winglang %}
<figcaption></figcaption>
{% embed https://dev.to/devteam %}
<figcaption></figcaption>
{% embed https://dev.to/payloadcms %}
<figcaption></figcaption>
{% embed https://dev.to/buildship %}
<figcaption></figcaption>
{% embed https://dev.to/quira %}
<figcaption></figcaption>
{% embed https://dev.to/requestlyio %}
<figcaption></figcaption>
{% embed https://dev.to/latitude %}
<figcaption></figcaption>
{% embed https://dev.to/novu %}
<figcaption></figcaption>
{% embed https://dev.to/wasp %}
<figcaption></figcaption>
{% embed https://dev.to/codenewbieteam %}
<figcaption></figcaption>
{% embed https://dev.to/opensauced %}
<figcaption></figcaption>
{% embed https://dev.to/supabase %}
<figcaption></figcaption>
{% embed https://dev.to/github %}
<figcaption></figcaption>
{% embed https://dev.to/getpieces %}
<figcaption></figcaption>
{% embed https://dev.to/glasskube %}
<figcaption></figcaption>
{% embed https://dev.to/tota11ydev %}
<figcaption></figcaption>
{% embed https://dev.to/buildwebcrumbs %}
<figcaption></figcaption>
{% embed https://dev.to/zenstack %}
<figcaption></figcaption>
{% embed https://dev.to/apisix %}
<figcaption></figcaption>
{% embed https://dev.to/tooljet %}
<figcaption></figcaption>
{% embed https://dev.to/codeparrot %}
<figcaption></figcaption>
{% embed https://dev.to/logto %}
<figcaption></figcaption>
{% embed https://dev.to/kitops %}
<figcaption></figcaption>
{% embed https://dev.to/snyk %}
<figcaption></figcaption>
{% embed https://dev.to/crabnebula %}
<figcaption></figcaption>
{% embed https://dev.to/ibmdeveloper %}
<figcaption></figcaption>
{% embed https://dev.to/fermyon %}
<figcaption></figcaption>
{% embed https://dev.to/aws-builders %}
<figcaption></figcaption>
{% embed https://dev.to/meteroid %}
<figcaption></figcaption>
{% embed https://dev.to/developuls %}
<figcaption></figcaption>
{% embed https://dev.to/virtualcoffee %}
<figcaption></figcaption>
{% embed https://dev.to/zenika %}
<figcaption></figcaption>
{% embed https://dev.to/aws %}
<figcaption></figcaption>
{% embed https://dev.to/cyclops-ui %}
<figcaption></figcaption>
{% embed https://dev.to/this-is-learning %}
<figcaption></figcaption>
{% embed https://dev.to/angular %}
<figcaption></figcaption>
{% embed https://dev.to/streetcommunityprogrammer %}
<figcaption></figcaption>
{% embed https://dev.to/webxdao %}
<figcaption></figcaption>
{% embed https://dev.to/gh-campus-experts %}
<figcaption></figcaption>
{% embed https://dev.to/boxyhq %}
<figcaption></figcaption>
{% embed https://dev.to/livecycle %}
<figcaption></figcaption>
{% embed https://dev.to/he4rt %}
<figcaption></figcaption>
{% embed https://dev.to/devrelbr %}
<figcaption></figcaption>
{% embed https://dev.to/letscode %}
<figcaption></figcaption>
{% embed https://dev.to/web %}
<figcaption></figcaption>
{% embed https://dev.to/mrrobot %}
<figcaption></figcaption>
{% embed https://dev.to/bytesized %}
<figcaption></figcaption>
{% embed https://dev.to/ai-pulse %}
<figcaption></figcaption>
{% embed https://dev.to/papermark %}
<figcaption></figcaption>
{% embed https://dev.to/docker %}
<figcaption></figcaption>
{% embed https://dev.to/github20k %}
<figcaption></figcaption>
{% embed https://dev.to/swirl %}
<figcaption></figcaption>
{% embed https://dev.to/acaverna %}
<figcaption></figcaption>
{% embed https://dev.to/feministech %}
<figcaption></figcaption>
{% embed https://dev.to/triggerdotdev %}
<figcaption></figcaption>
{% embed https://dev.to/odigos %}
<figcaption></figcaption>
{% embed https://dev.to/llmware %}
<figcaption></figcaption>
{% embed https://dev.to/warpdotdev %}
<figcaption></figcaption>
{% embed https://dev.to/codeofrelevancy %}
<figcaption>One of my first followers. Will always be grateful!</figcaption>
{% embed https://dev.to/typeform %}
<figcaption></figcaption>
{% embed https://dev.to/vscodetips %}
<figcaption></figcaption>
{% embed https://dev.to/middleware %}
<figcaption></figcaption>
{% embed https://dev.to/basementdevs %}
<figcaption></figcaption>
---
Whew! It's tough to find organizations on DEV, believe me!
I had to scroll endlessly, use keywords, and check out everyone I followed to see if they were part of any organizations.
If they were good, I added them. It took a lot of time 😵
Anyway, I love organizations because they share valuable content on specific niches. Please show your support by following them and learning more.
I hope you love this. Thank you!
| If you like this kind of stuff, <br /> please follow me for more :) | <a href="https://twitter.com/Anmol_Codes"><img src="https://img.shields.io/badge/Twitter-d5d5d5?style=for-the-badge&logo=x&logoColor=0A0209" alt="profile of Twitter with username Anmol_Codes" ></a> <a href="https://github.com/Anmol-Baranwal"><img src="https://img.shields.io/badge/github-181717?style=for-the-badge&logo=github&logoColor=white" alt="profile of GitHub with username Anmol-Baranwal" ></a> <a href="https://www.linkedin.com/in/Anmol-Baranwal/"><img src="https://img.shields.io/badge/LinkedIn-0A66C2?style=for-the-badge&logo=linkedin&logoColor=white" alt="profile of LinkedIn with username Anmol-Baranwal" /></a> |
|------------|----------|
 | anmolbaranwal |
1,878,036 | Fzf advanced integration in Powershell | 🪟 INTRO If you want to integrate fzf with rg, fd, bat to fuzzy find files, directories or... | 0 | 2024-06-05T12:46:17 | https://dev.to/kevinnitro/fzf-advanced-integration-in-powershell-53p0 | powershell, fzf, ripgrep, bat | ## 🪟 INTRO
If you want to integrate [`fzf`](https://github.com/junegunn/fzf) with [`rg`](https://github.com/BurntSushi/ripgrep), [`fd`](https://github.com/sharkdp/fd), [`bat`](https://github.com/sharkdp/bat) to fuzzy find files, directories or ripgrep the content of a file and preview using `bat`, but the [fzf document](https://github.com/junegunn/fzf/blob/master/ADVANCED.md) only has commands for Linux shell _(bash,...)_, and you want to achieve that on your Windows Machine using Powershell, this post may be for you.
---
## 💫 INTRODUCTION FOR THOSE MENTIONED CLI TOOL
- [`fzf`](https://github.com/junegunn/fzf): 🌸 A command-line fuzzy finder
- [`ripgrep`](https://github.com/BurntSushi/ripgrep) _(rg)_: ripgrep recursively searches directories for a regex pattern while respecting your gitignore
- [`fd`](https://github.com/sharkdp/fd): A simple, fast and user-friendly alternative to 'find'
- [`bat`](https://github.com/sharkdp/bat): A cat(1) clone with wings.
- [`eza`](https://github.com/eza-community/eza) _(optional)_: A modern, maintained replacement for ls
> NOTE
>
> You can install those tool via [`scoop`](https://scoop.sh/) or [`Chocolatey`](https://chocolatey.org/) for easy installation and update.
---
## 💻 COMMANDS
> NOTE
>
> `fzf` uses `CMD` for external command, not `Powershell` or `pwsh`.
>
> I won't explain the commands in details.
### 1️⃣ Find files / directories
#### Preview
- Find files
- Find directories
#### Command
```powershell
fd --type file --follow --hidden --exclude .git |
fzf --prompt 'Files> ' `
--header-first `
--header 'CTRL-S: Switch between Files/Directories' `
--bind 'ctrl-s:transform:if not "%FZF_PROMPT%"=="Files> " (echo ^change-prompt^(Files^> ^)^+^reload^(fd --type file^)) else (echo ^change-prompt^(Directory^> ^)^+^reload^(fd --type directory^))' `
--preview 'if "%FZF_PROMPT%"=="Files> " (bat --color=always {} --style=plain) else (eza -T --colour=always --icons=always {})'
```
- The command above pipes the output of `fd` _(find files)_ to `fzf`. Press <kbd>Ctrl</kbd> + <kbd>S</kbd> to change the mode to find directories. The preview pane using `bat` to preview file's content is on the right side, and `eza` for directory tree.
- You can use `tree` command on Windows instead of `eza` in the last argument. But it wouldn't be colourful and have files icons.
```diff
- eza -T --colour=always --icons=always {}
+ tree /A {}
```
### 2️⃣ Ripgrep content + fzf
#### Preview
1. Ripgrep
2. Fzf
#### Command
```powershell
$INITIAL_QUERY = "${*:-}"
$RG_PREFIX = "rg --column --line-number --no-heading --color=always --smart-case"
"" |
fzf --ansi --disabled --query "$INITIAL_QUERY" `
--bind "start:reload:$RG_PREFIX {q}" `
--bind "change:reload:sleep 0.1 & $RG_PREFIX {q} || rem" `
--bind 'ctrl-s:transform:if not "%FZF_PROMPT%" == "1. ripgrep> " (echo ^rebind^(change^)^+^change-prompt^(1. ripgrep^> ^)^+^disable-search^+^transform-query:echo ^{q^} ^> %TEMP%\rg-fzf-f ^& type %TEMP%\rg-fzf-r) else (echo ^unbind^(change^)^+^change-prompt^(2. fzf^> ^)^+^enable-search^+^transform-query:echo ^{q^} ^> %TEMP%\rg-fzf-r ^& type %TEMP%\rg-fzf-f)' `
--color "hl:-1:underline,hl+:-1:underline:reverse" `
--delimiter ":" `
--prompt '1. ripgrep> ' `
--preview-label "Preview" `
--header 'CTRL-S: Switch between ripgrep/fzf' `
--header-first `
--preview 'bat --color=always {1} --highlight-line {2} --style=plain' `
--preview-window 'up,60%,border-bottom,+{2}+3/3'
```
- The command above use `ripgrep` to find the content of the file and preview using `bat`. Then you can find more specifically by pressing <kbd>Ctrl</kbd> + <kbd>S</kbd> to switch to `fzf` mode. Press <kbd>Ctrl</kbd> + <kbd>S</kbd> again to back to the first step _(`ripgrep`)_.
---
## ⚙️ ADVANCED USE
You can put them all in a function, choose what to do with the output of the command, like `Set-Location`, or open the file / directory in your editor. Just open your `$PROFILE` file using your editor (ex: `nvim $PROFILE`).
Take my config as reference _(require [`PsReadLine`](https://github.com/PowerShell/PSReadLine) - may be builtin - to config keyboard shortcut to fast call function)_.
```powershell
$env:FZF_DEFAULT_OPTS=@"
--layout=reverse
--cycle
--scroll-off=5
--border
--preview-window=right,60%,border-left
--bind ctrl-u:preview-half-page-up
--bind ctrl-d:preview-half-page-down
--bind ctrl-f:preview-page-down
--bind ctrl-b:preview-page-up
--bind ctrl-g:preview-top
--bind ctrl-h:preview-bottom
--bind alt-w:toggle-preview-wrap
--bind ctrl-e:toggle-preview
"@
function _open_path
{
param (
[string]$input_path
)
if (-not $input_path)
{
return
}
Write-Output "[ ] cd"
Write-Output "[*] nvim"
$choice = Read-Host "Enter your choice"
if ($input_path -match "^.*:\d+:.*$")
{
$input_path = ($input_path -split ":")[0]
}
switch ($choice)
{
{$_ -eq "" -or $_ -eq " "}
{
if (Test-Path -Path $input_path -PathType Leaf)
{
$input_path = Split-Path -Path $input_path -Parent
}
Set-Location -Path $input_path
}
default
{ nvim $input_path
}
}
}
function _get_path_using_fd
{
$input_path = fd --type file --follow --hidden --exclude .git |
fzf --prompt 'Files> ' `
--header-first `
--header 'CTRL-S: Switch between Files/Directories' `
--bind 'ctrl-s:transform:if not "%FZF_PROMPT%"=="Files> " (echo ^change-prompt^(Files^> ^)^+^reload^(fd --type file^)) else (echo ^change-prompt^(Directory^> ^)^+^reload^(fd --type directory^))' `
--preview 'if "%FZF_PROMPT%"=="Files> " (bat --color=always {} --style=plain) else (eza -T --colour=always --icons=always {})'
return $input_path
}
function _get_path_using_rg
{
$INITIAL_QUERY = "${*:-}"
$RG_PREFIX = "rg --column --line-number --no-heading --color=always --smart-case"
$input_path = "" |
fzf --ansi --disabled --query "$INITIAL_QUERY" `
--bind "start:reload:$RG_PREFIX {q}" `
--bind "change:reload:sleep 0.1 & $RG_PREFIX {q} || rem" `
--bind 'ctrl-s:transform:if not "%FZF_PROMPT%" == "1. ripgrep> " (echo ^rebind^(change^)^+^change-prompt^(1. ripgrep^> ^)^+^disable-search^+^transform-query:echo ^{q^} ^> %TEMP%\rg-fzf-f ^& type %TEMP%\rg-fzf-r) else (echo ^unbind^(change^)^+^change-prompt^(2. fzf^> ^)^+^enable-search^+^transform-query:echo ^{q^} ^> %TEMP%\rg-fzf-r ^& type %TEMP%\rg-fzf-f)' `
--color "hl:-1:underline,hl+:-1:underline:reverse" `
--delimiter ":" `
--prompt '1. ripgrep> ' `
--preview-label "Preview" `
--header 'CTRL-S: Switch between ripgrep/fzf' `
--header-first `
--preview 'bat --color=always {1} --highlight-line {2} --style=plain' `
--preview-window 'up,60%,border-bottom,+{2}+3/3'
return $input_path
}
function fdg
{
_open_path $(_get_path_using_fd)
}
function rgg
{
_open_path $(_get_path_using_rg)
}
# SET KEYBOARD SHORTCUTS TO CALL FUNCTION
Set-PSReadLineKeyHandler -Key "Ctrl+f" -ScriptBlock {
[Microsoft.PowerShell.PSConsoleReadLine]::RevertLine()
[Microsoft.PowerShell.PSConsoleReadLine]::Insert("fdg")
[Microsoft.PowerShell.PSConsoleReadLine]::AcceptLine()
}
Set-PSReadLineKeyHandler -Key "Ctrl+g" -ScriptBlock {
[Microsoft.PowerShell.PSConsoleReadLine]::RevertLine()
[Microsoft.PowerShell.PSConsoleReadLine]::Insert("rgg")
[Microsoft.PowerShell.PSConsoleReadLine]::AcceptLine()
}
```
---
## 😎 LAST WORDS
- You can read more on document of those tool for further use _(custom fzf layout, color schemes,...)_
- Please change the command according to your demands.
- Read more about the amazing tool [`PSFzf`](https://github.com/kelleyma49/PSFzf), a PowerShell wrapper around the fuzzy finder fzf.
- By the way you can come visit my [windows dotfiles](https://github.com/KevinNitroG/windows-dotfiles) and grab some stuff you like 😁.
- My English is not good and this is the first time I write a post in English. If there are any mistakes, please forgive me.
- Thank you.
| kevinnitro |
1,878,035 | PACX ⁓ Data model manipulation | We introduced PACX here, as a toolbelt containing commands to streamline the application development... | 0 | 2024-06-05T12:46:01 | https://dev.to/_neronotte/pacx-data-model-manipulation-579e | powerplatform, pacx, dataverse, opensource | We [introduced PACX here](https://dev.to/_neronotte/pacx-command-line-utility-belt-for-power-platform-dataverse-e4e), as a toolbelt containing commands to streamline the application development on Dataverse environments.
The idea behind PACX is to speed up the development experience towards Dataverse, and one of the first item we wanted to address is the data model manipulation.
---
## Pain points 💢
[make.powerapps.com](https://make.powerapps.com) portal is a great tool to create tables, columns and relations with an easy-to-use, easy-to-learn UI that can be used also by early users, but... you have to add them one at time, _manually_. Moreover, when you create new tables, column and/or relations, there are several info you need to provide to the platform (e.g. _name, schema name, type and format, config flags, and so on_), and often the defaults provided by the platform are not ideal or they don't match the best practices driven by experience.
Problems arise when you are a system integrator creating **a lot of customizations** for a given client. Often you negotiate the structure of the data model in advance, using excel files (or other media) to define which tables/fields to add, and then **you have 10, 100, 500 fields to be created or updated**, _manually_.
I tend to emphasize the word _"manually"_ because, by experience, is a proxy for _"error prone"_.
🗒️ For a long time we discussed the possibility to _script_ the operations against the data model. Sure you can do everything via REST API, but they're not so handy to script...
🚀 **PACX** to the rescue! 🚀
---
## Benefits of scripting data model manipulations 💪🏻
A tool that allows to script all the data model manipulation operations provides several benefits:
- 🏃🏻 **Fast setup**: scripting everything and running via console is A LOT FASTER than using keyboard and mouse to create each table/column/relation manually. In my personal experience, I gained almost 70-80% of performance improvement using PACX commands vs make.powerapps.com
- 📜 **Scripts can be automatically generated** from data model excel files: if you have the list of fields to create in excel format, with type and specs, you can simply tweak with excel formulas and automatically generate the commands to create each of those fields. Then you can just run it in a console. This alone saves hours of work ⌛.
- 🕒 **Scripts can be versioned**: you can keep track of the data model changes using your favorite ALM tool (Azure DevOps, GitHub, ...)
- 👩🏻💻 **You can automatically enforce the best practices**: if the command is built to be able to accept the bare minimum information required to perform the operation, and all the other info is automatically inferred using best practices as guidelines, you reduce the risk of errors by newbie devs
- ✂️ **Creating similar columns is a matter of cut&paste**: I often had the need to create, on a given table, 10-12 similar columns. E.g. on a custom entity called "Fiscal Year", I wanted to track the target revenues for each month of the fiscal year in columns: 12 equal columns, the only difference is in the name. Scripting it you can create the first and then copy&paste the command (or arrow up ⬆️ on windows terminal), change only the name, and you're good to go.
- 🤖 **You can provide advanced data manipulation features not available via UI**: for instance:
- creation of polymorphic lookups
- creation of _explicit_ n-n relationship tables in one step
- automatically drop a column from forms and view before deleting it
---
## PACX approach to data model manipulation 🧑🏻🏫
**PACX** provides several commands to manipulate the datamodel, grouped in the 3 distinct namespaces:
- [`pacx table`](https://github.com/neronotte/Greg.Xrm.Command/wiki/pacx-table)
- [`pacx column`](https://github.com/neronotte/Greg.Xrm.Command/wiki/pacx-column)
- [`pacx rel`](https://github.com/neronotte/Greg.Xrm.Command/wiki/pacx-rel)
`pacx table` contains commands that can be used to work with tables. It allows to **create new tables**, **delete existing tables**, but also **export the table metadata** (for documentation purposes), **generating E-R diagrams** of the tables contained in a given solution. There are also a couple of advanced capabilities such as:
- **script**: reverse engineers the structure of a given table and outputs the `pacx` style commands that can be used to recreate that table from scratch. Useful when you want to document the contents of a previously created environment.
- **defineMigrationStrategy**: it analyzes the structure and the relationships of a given list of tables, and provides the sequence of operations required to perform a data migration of records onto those tables, ensuring compliance with referential integrity constraints.
`pacx column` contains commands designed for efficient manipulation of Dataverse columns. You can **create or delete columns** (forcing also the pruning of column dependencies, if needed), **exporting the metadata** of a column (for documentation purposes), **retrieve where a given column is being used**, and also **programmatically set the seed** of an autonumber column (useful in devops scenarios).
`pacx rel` namespace contains commands designed to **create or delete relationships** between tables. It has a couple of advanced, useful, features:
- **create n-n _explicit_ relationships**: an n-n explicit relationship is a standard dataverse table whose primary, logical, key is made by a pair of lookups to two other dataverse tables; it's used often instead of standard n-n relationships (that we call _implicit_) when you need to provide additional attributes to the relationship itself.
- **create polymorphic relationships**: this can be achieved, and [it's fully supported](https://learn.microsoft.com/en-us/power-apps/developer/data-platform/webapi/multitable-lookup), only via SDK or Web API, as documented in the official article
_**We'll deep dive on each of those commands in the upcoming posts of this series... stay tuned! 😎**_
| _neronotte |
1,878,034 | Understanding API Versioning: A Simple Guide -Part 1 : Implementation using C# | In pervious article I discussed the Theory of API Versioning, In this article I will explain how to... | 0 | 2024-06-05T12:45:18 | https://dev.to/muhammad_taimur/understanding-api-versioning-a-simple-guide-part-1-c-code-1p0e | csharp, api, apiversioning, dotnet | In [pervious article I discussed the Theory of API Versioning](https://dev.to/muhammad_taimur/understanding-api-versioning-a-simple-guide-part-1-theory-4ni5), In this article I will explain how to implement API versioning.
Used technology C# and .Net
Below is a C# code example that demonstrates how to implement API versioning using .NET Core. This example uses URL path versioning, where the version number is included in the URL path.
To start Open Visual Studio and create a new ASP.Net Core Web API project. Once the project is setup install the necessary package from Nuget Packages.
Microsoft.AspNetCore.Mvc.Versioning
Your .csporj file look like this:
```csharp
<Project Sdk="Microsoft.NET.Sdk.Web">
<PropertyGroup>
<TargetFramework>net6.0</TargetFramework>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.AspNetCore.Mvc.Versioning" Version="5.0.0" />
</ItemGroup>
</Project>
```
Next, let's set up the API in your ASP.NET Core project:
Startup.cs: Configure API versioning in your startup file
```csharp
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
public class Startup
{
public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
services.AddApiVersioning(config =>
{
// Specify the default API Version
config.DefaultApiVersion = new Microsoft.AspNetCore.Mvc.ApiVersion(1, 0);
config.AssumeDefaultVersionWhenUnspecified = true;
config.ReportApiVersions = true;
// Versioning strategy: URL path
config.ApiVersionReader = new Microsoft.AspNetCore.Mvc.Versioning.UrlSegmentApiVersionReader();
});
}
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
if (env.IsDevelopment())
{
app.UseDeveloperExceptionPage();
}
app.UseHttpsRedirection();
app.UseRouting();
app.UseAuthorization();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}
}
```
WeatherController.cs: Define your versioned API controllers.
```csharp
using Microsoft.AspNetCore.Mvc;
namespace VersioningExample.Controllers
{
// v1 Controller
[ApiController]
[Route("api/v{version:apiVersion}/weather")]
[ApiVersion("1.0")]
public class WeatherV1Controller : ControllerBase
{
[HttpGet]
public IActionResult Get()
{
var weatherData = new
{
temperature = 25,
humidity = 60
};
return Ok(weatherData);
}
}
// v2 Controller
[ApiController]
[Route("api/v{version:apiVersion}/weather")]
[ApiVersion("2.0")]
public class WeatherV2Controller : ControllerBase
{
[HttpGet]
public IActionResult Get()
{
var weatherData = new
{
temp = 25,
hum = 60,
wind_speed = 10
};
return Ok(weatherData);
}
}
}
```
Program.cs: The entry point of your application.
```csharp
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Hosting;
public class Program
{
public static void Main(string[] args)
{
CreateHostBuilder(args).Build().Run();
}
public static IHostBuilder CreateHostBuilder(string[] args) =>
Host.CreateDefaultBuilder(args)
.ConfigureWebHostDefaults(webBuilder =>
{
webBuilder.UseStartup<Startup>();
});
}
```
In this setup:
- We configured API versioning in the Startup.cs file.
- We created two controllers, WeatherV1Controller and WeatherV2Controller, to handle different versions of the weather endpoint.
- Each controller has its own version-specific route and response format.
Now, you can access the different versions of the API by making requests to:
- GET /api/v1/weather for version 1
- GET /api/v2/weather for version 2
This ensures that changes in version 2 do not affect the clients using version 1, demonstrating the concept of API versioning.
Happy coding!
Feel free to ask questions or share your thoughts in the comments below! If you found this article helpful, don’t forget to like and share it. | muhammad_taimur |
1,878,033 | Top Device Farms to Test Your iOS and Android Apps | On average, people spend 6 hours and 37 minutes a day looking at their phone. Today, the internet... | 0 | 2024-06-05T12:42:35 | https://dev.to/jamescantor38/top-device-farms-to-test-your-ios-and-android-apps-19co | devicefarms, testgrid, testios, andriod | On average, people spend 6 hours and 37 minutes a day looking at their phone. Today, the internet traffic from mobile has surpassed desktops signifying how people consider mobile devices as not just devices to connect to the world but an integral part of their lives, especially for millennials who spend 25% of their waking lives using a mobile phone.
Mobile manufacturers have not sidelined this fact and have understood that releasing newer mobile devices is much more profitable than releasing newer laptops at the same pace.
However, with each new device release, mobile app testers require one more testing device and more test cases associated with it. This creates an issue of procurement, setting up, and maintenance of thousands of devices that keep increasing each day. It is certainly a problem in the mobile world and the best solution to it is – using device farms!
## What are device farms?
The solution to the deeply fragmented mobile world we live in is device farms. As vegetable farms have vegetables, and poultry farms have poultry, a device farm contains devices already procured and placed at a certain physical location. These are real devices that are unique in one way or another. For instance, one may find two Samsung Galaxy S24 in a device farm but both of them may have different configurations (like RAM or ROM). These devices can be accessed either physically by going to a location or through the internet. However, most of the device farms allow only virtual access.
The main aim of a device farm is to satiate the requirements of mobile app testing which majorly consists of Android testing and iOS testing. It eliminates the need to purchase these devices and allows the testers to select a device, upload their application, and just start to operate on it instantly without spending too much money from their pocket. They certainly solve the biggest challenge of mobile app testing and, today, there are hardly any organizations that do not make use of it.
The need and market for device farms exploded with the outburst of mobile device sales and the number of applications being developed for different operating systems. Such high demands led to the inception of device farms by various companies providing a twist of features to lure the testers. However, to select the one best for us, we need to explore these device farms one by one.
## Top device farms for Android and iOS testing
The following device farms serve as the best options in the current times with lucrative features and impressive performance.
### TestGrid
One of the top mobile device farms that not only lets you connect in a few seconds but also provides the hardware settings control to the testers is TestGrid. The platform spans over vast variety of testing domains providing a single-stop solution for all types of testers and their testing requirements. It provides real devices with their farm constantly upgrading with newer ones from time to time.
The most attractive features of TestGrid are as follows:
Device lock-in facility: Most device farms will reassign the device once the tester’s session closes or they log out of their account. However, TestGrid provides a facility to lock in a device for a certain period allotting the device completely to the tester.
**Real device support**: TestGrid provides [real devices for testing](https://testgrid.io/real-device-testing) that are placed on their premise ready to begin the testing work.
**Beyond mobile application**: Most device farms will open just the application after installation and will allow testing only within that boundary. With TestGrid, the tester gets complete control of the device with which they can also make hardware settings change and navigate across the device as they would on a real device.
**Wide variety of testing**: TestGrid supports a wide variety of testing domains including performance testing, API testing, cross-browser testing, automation testing, and visual testing.
**Codeless support**: Organizations adopting a codeless testing paradigm, can achieve the same using TestGrid’s record-and-play feature without writing any line of code.
**Biometric support**: TestGrid device farm supports biometric functionality testing that includes facial recognition and fingerprint verification through their real device.
Deep integration: The testers get integrated software such as JIRA and those that facilitate the CI/CD pipeline such as Jenkins.
**Bottom line**: TestGrid is a fast, robust, and economical device farm for Android as well as iOS. It provides a wide spectrum to work on with codeless support for all types of testers. It can be a primary choice for both individual testers and enterprises with large testing teams.
**Pricing:**
**Freemium**: Free forever (200 minutes/2 minute sessions)
**Manual/Scriptless Automation**: $25/mo (5 users, 1 parallel test)
**End-to-End Automation**: $99/mo (5 users, 1 parallel test)
**Private Dedicated**: $30/mo (5 users, 1 dedicated device)
**Enterprise**: Contact sales
### AWS Device Farm
Established in 2015, the AWS device farm currently holds more than 2500 devices, desktop, Android, and iOS, with 12 months of free usage. It allows the testers to accomplish automation testing with real devices either by using built-in frameworks that do not require writing or maintaining tests or through supported frameworks directly.
Once the tests are completed, the testers get the results in the form of videos, logs, images, and other analytics for careful consideration. AWS device farm also allows geolocation settings and a smooth integration facility into the current development workflow for a seamless experience.
**Bottom line**: AWS is a great device farm with a feasible option to get started. Since it is hosted by AWS which also has its server farm and network hosting abilities, the testers can get a good benefit out of it if they are already using AWS components in other pieces of development.
**Pricing** – Custom based on test runs and infrastructure
### Samsung Remote Test Lab
To satiate the physical device requirements and run the Android application, Samsung has its own Android device farm called Samsung Remote Test Lab. This lab consists of real Samsung devices including all the latest ones located at 10 locations in 8 countries. Once the tester signs up for free, the nearest location is connected. However, the tester is not restricted to using just that location and can connect to other service locations as well.
Samsung Remote Test Lab has a unique way of installing the Android application using the drag-and-install feature where the tester simply needs to drag the file from local explorer to their dashboard to install. Once done, they get a list of features to leverage on these devices. A few of them are as follows:
**Setting alterations**: Samsung Remote Test Lab provides a lot of setting options through which the testers can change the settings and test with which they are most comfortable.
**Automation testing support**: The device farm by Samsung comes with support for automation testing with a recording of integral parameters such as CPU usage and memory usage.
**Multi-touch support**: The testers can test their application for multi-touch gestures including zooming on the screen.
**Audio streaming**: The device farm for Android also supports audio streaming so the tester can listen to each sound embedded in their application.
**Bottom line**: Samsung Remote Test Lab is fast, user-friendly, and efficient in testing providing a user experience similar to a real device. However, the tester can use only Samsung devices in the lab and since they are manufactured by Samsung, they support Android applications only.
**Pricing** – Free to use for Samsung developer members.
### Firebase Test Lab
Google’s answer to the problem of real device procurement for testing is Firebase Test Lab. Established for Android and iOS application testing, Firebase Test Lab provisions a real device (or a virtual device as per requirement) with just a free sign-up.
Firebase Test Lab can integrate tests with Firebase console, Android Studio, and gcloud CLI due to the reason that it is made by Google. It also provides support for the Robo test through which testers can create tests without writing any code by using the Robo driver that crawls the applications and does all the necessary work. Although, that does not mean test scripting is not allowed. Testers are free to choose the path they want and even integrate the CI pipeline directly through the command line into the lab. Once done, detailed reports are generated containing analytics and screenshots.
**Bottom line**: Firebase Test Lab can get one onboard quickly as compared to many other alternatives. It also provides support for iOS testing but with limited options. However, the downside is that Firebase Test Lab is not suitable for all testing domains that a tester may require. It can be used with other labs or frameworks but not exclusively.
**Pricing**: Spark plan (10 test runs on virtual device and 5 test runs on physical device per day) and Blaze plan ($5 per hour post free 30 minutes on physical device and $1 per hour post 60 minutes on virtual device)
### Kobiton
Another piece in top device farms for Android and iOS testing is Kobiton. Similar to TestGrid, Kobiton also provides codeless testing capabilities however its device cloud only supports mobile and that too those that are popular (with popular operating systems).
Kobiton comes with a feature of device lab management that essentially means that a tester can create a lab of his own and select the target device for their application in that lab. Since it is a personal device lab, they no longer would be required to keep track of these devices and the lab will serve as an isolated one yet connected to the Kobiton ecosystem. One may also find a few elements of artificial intelligence embedded in scripting to make test case writing faster. This includes self-healing as well as Appium test case generation.
**Bottom line**: Kobiton device farm is an AI-supported tool with codeless support. However, considering the shortfalls of real devices, it may not be completely suitable for the organizational level of testing.
**Pricing** (As per plan): $83/$399/$9000/Custom
### App Center Test
Microsoft’s device farm for Android and iOS testing is called App Center Test (formerly Xamarin Test Cloud). It supports testing frameworks that can be used for writing scripts and running them over the cloud on real devices hosted in the lab.
App Center Test provides extensive reporting with logs and screenshots. The testers can also schedule parallel runs i.e. execute tests on multiple devices at the same time in just a few steps.
**Bottom line**: Microsoft’s device farm is considerable only if the application does not have complex hardware-related features and the testers work on the selected frameworks. The device farm does not support manual testing, network simulation, VPN, or load testing.
**Pricing**: 30 days free trial post that per concurrent device.
### Perfecto
A device farm with biometric support with network virtualization is Perfecto. Supporting both real devices and virtual devices, Perfecto allows a blend of scriptless and scripted testing for an efficient cycle.
Perfecto is also capable of expanding its span beyond simple UI testing to performance testing, API testing, and user experience testing. With a certified cloud system and high-class monitoring abilities, Perfecto is easily one of the top device farms for Android and iOS testing.
Bottom line: Perfecto is a great tool that allows most types of testing. However, the device farm lacks integrations and does not support hardware configurations like testing the camera, etc.
**Pricing**: $83/$155/Custom
### Sauce Labs
A device farm that can take care of all your needs from development to post-release is Sauce Labs. It provides great support for automation software and integrates third-party apps as well.
Sauce Labs has been innovative for years providing solutions that could facilitate the testing cycles. For instance, it provides parallel testing and can open the code inspector to debug the code just as on a browser. It also provides simulators and emulators based on requirements along with real devices that can monitor the test executions and generate an extensive report later on.
Bottom line: Sauce Labs is a great platform that provides all the required functionalities along with CI/CD integration to the customers. However, the only downside is difficulty in accessing the hardware parameters and it does tend to be on a pricier side as compared to its alternatives.
Pricing: $249 per month for real devices, or $199 per month for virtual devices.
## Headspin
Promoting itself as a Global Device Infrastructure, Headspin is present at more than 90 locations whose greatest impact is seen in geolocation testing.
Headspin supports both manual and automation testing on real devices with a primary focus on simulating real-world conditions no matter what type of tests are run. Its support for multiple automation frameworks makes it one of the top device farms for Android and iOS testing. Headspin also supports creating your own lab to organize the target devices in a single place.
**Bottom line**: Headspin is a great choice for testers targeting geolocation testing or in any other way requiring their application to run from different locations. However, Headspin may seem to be weaker in other testing domains and does not support a few mandatory ones such as API testing. It has also been conceived as an expensive tool.
**Pricing**: Based on requirements only.
## Conclusion
As time goes by, the frequency with which manufacturers release their phones also increases. Today, more than 81% of Americans own smartphones and this percentage keeps increasing in each country. However, this serves as a problem for the developers and testers. The more devices there are, the more flexible our code needs to be to cater to all those devices. Hence, we need a solution that can provide us with devices and still be able to eliminate the overheads that come with it. This is exactly what device farms do.
Device farms are a collection of devices (mostly real) that sit at a physical location and are connected to the internet for usage. They are primarily designed to cater to the development and testing requirements although, that is not a restriction and they can be used for personal use as well. Device farms often try to differentiate themselves by providing unique features to the testers. Some like TestGrid can span across all testing domains while some like App Center Test have restrictive capabilities. This makes this top device farms list for Android and iOS testing worth reading and understanding which one suits our needs the best. Hope it helps in future projects and let us know your favorite tool in the comments below
This blog is originally published at [TestGrid](https://testgrid.io/blog/best-device-farms/)
| jamescantor38 |
1,878,032 | The Future of AIPowered Healthcare Solutions | Artificial Intelligence (AI) in healthcare encompasses a range of technologies that enable machines... | 27,548 | 2024-06-05T12:41:31 | https://dev.to/aishikl/the-future-of-aipowered-healthcare-solutions-3ge8 | Artificial Intelligence (AI) in healthcare encompasses a range of technologies that enable machines to perform both administrative and clinical functions, significantly transforming the field. AI excels in processing large datasets, aiding in accurate diagnosis, treatment, and prediction of medical conditions. Applications include robot-assisted surgeries, virtual nursing assistants, and automated image diagnosis, which enhance healthcare provider capabilities, improve patient outcomes, and reduce costs. As AI evolves, its integration with technologies like IoT and big data analytics continues to expand its impact, making healthcare services more efficient and accessible.
#rapidinnovation#AIinHealthcare #HealthTech #PredictiveAnalytics #PersonalizedMedicine #Telemedicine
link: https://www.rapidinnovation.io/post/the-future-of-ai-powered-healthcare-solutions | aishikl | |
1,878,031 | Search Algorithm in AI | In artificial intelligence, search algorithms are techniques used to traverse a problem space to find... | 0 | 2024-06-05T12:41:27 | https://dev.to/shaiquehossain/search-algorithm-in-ai-9gb | ai, algorithms, datascience | In artificial intelligence, [search algorithms](https://www.almabetter.com/bytes/tutorials/artificial-intelligence/search-algorithm-in-ai) are techniques used to traverse a problem space to find a solution. These algorithms systematically explore possible states, applying rules or actions to move from one state to another until a goal state is reached. Common search algorithms include breadth-first search (BFS), depth-first search (DFS), uniform-cost search (UCS), and A* search. They differ in their strategies for selecting which states to explore next, such as prioritizing nodes based on cost or heuristic estimates. Search algorithms are fundamental in various AI applications, including pathfinding, puzzle-solving, and game playing. | shaiquehossain |
1,878,030 | API Gateway | API Gateway, bir yazılım mimarisi bileşeni olarak, istemciler (client) ile arka uç hizmetleri... | 0 | 2024-06-05T12:41:19 | https://dev.to/mustafacam/api-gateway-4mmc |
API Gateway, bir yazılım mimarisi bileşeni olarak, istemciler (client) ile arka uç hizmetleri (backend services) arasında bir ara katman görevi gören bir [proxy sunucusudur](https://dev.to/mustafacam/proxy-3e40). Bu katman, istemci isteklerini yönetir ve uygun arka uç hizmetlerine yönlendirir. API Gateway'in başlıca görevleri ve özellikleri şunlardır:
1. **İstek Yönlendirme**: İstemciden gelen istekleri alır ve uygun mikro hizmetlere veya arka uç sistemlerine yönlendirir. Bu sayede istemcilerin doğrudan arka uç hizmetleriyle iletişime geçmesine gerek kalmaz.
2. **Yük Dengeleme (Load Balancing)**: İsteklerin arka uç hizmetlerine eşit bir şekilde dağıtılmasını sağlar. Bu, arka uç hizmetlerinin daha verimli çalışmasına ve aşırı yüklenme durumlarının önlenmesine yardımcı olur.
3. **Kimlik Doğrulama ve Yetkilendirme (Authentication and Authorization)**: İstemci isteklerini doğrular ve bu isteklerin belirli kaynaklara erişim iznine sahip olup olmadığını kontrol eder.
4. **Ortam Paylaşımı (CORS - Cross-Origin Resource Sharing)**: Farklı kökenlerden gelen isteklerin güvenli bir şekilde yönetilmesini sağlar.
5. **Veri Dönüşümü (Data Transformation)**: İstemci istekleri ve arka uç yanıtları üzerinde veri dönüşümleri yapabilir. Örneğin, JSON formatındaki bir isteği XML formatına çevirebilir.
6. **Hata Yönetimi ve İzleme (Error Handling and Monitoring)**: İsteklerin izlenmesi, günlük kayıtlarının tutulması ve hata yönetimi gibi görevleri yerine getirir. Bu sayede sistemin durumu ve performansı izlenebilir.
7. **Önbellekleme (Caching)**: Sık kullanılan verilerin önbelleğe alınmasını sağlayarak performansı artırır ve arka uç sistemlere olan yükü azaltır.
8. **Rate Limiting ve Throttling**: Belirli bir zaman diliminde yapılan istek sayısını sınırlayarak, sistemin aşırı yüklenmesini önler.
### Kullanım Alanları
API Gateway, özellikle mikro hizmet mimarisine sahip uygulamalarda yaygın olarak kullanılır. Mikro hizmetler, küçük ve bağımsız hizmetlerden oluştuğu için, bu hizmetler arasındaki iletişimin yönetilmesi gerekmektedir. API Gateway, bu iletişimi merkezileştirerek yönetimi kolaylaştırır.
### Popüler API Gateway Çözümleri
- **AWS API Gateway**: Amazon Web Services tarafından sunulan ve bulut tabanlı uygulamalar için yaygın olarak kullanılan bir çözüm.
- **Kong**: Açık kaynaklı bir API Gateway çözümü. Performansı ve ölçeklenebilirliği ile bilinir.
- **NGINX**: Yüksek performanslı bir HTTP ve reverse proxy sunucusu olan NGINX, aynı zamanda API Gateway olarak da kullanılabilir.
- **Apigee**: Google tarafından sunulan, kapsamlı özelliklere sahip bir API yönetim platformu.
API Gateway, mikro hizmet mimarisinin karmaşıklığını yönetmek ve çeşitli hizmetler arasındaki iletişimi sağlamak için kritik bir bileşendir. | mustafacam | |
1,878,029 | HTML Head Tag | The tag in HTML is a container for metadata and other head elements that are not displayed on the... | 0 | 2024-06-05T12:39:23 | https://dev.to/shaiquehossain/html-head-tag-17d3 | html, tags, elements | The <head> tag in HTML is a container for metadata and other head elements that are not displayed on the web page. It typically includes essential information like the document title, character set, stylesheets, scripts, and meta tags. These elements provide instructions and additional information to browsers and search engines. Common child elements of the <head> tag include <title> for setting the document title, <meta> for specifying metadata like the character set and viewport, <link> for linking external resources like stylesheets, and <script> for embedding or linking JavaScript code. The <head> tag is essential for optimizing web pages for usability and search engine visibility.
For more info please visit the link:- https://www.almabetter.com/bytes/tutorials/html/head-tag-in-html | shaiquehossain |
1,878,028 | OnePay: Secure, Global Online Pay Platform for All Your Transactions | There is a greater demand than ever for quick and safe financial transactions in the fast-paced... | 0 | 2024-06-05T12:37:57 | https://dev.to/david_mark_61fd09e0f67a52/onepay-secure-global-online-pay-platform-for-all-your-transactions-4bl3 | paymentgateway, paymentsolutions, paymentprocess, onlinepayments | There is a greater demand than ever for quick and safe financial transactions in the fast-paced digital world of today. At the vanguard of this change is OnePay, an inventive online payment platform that provides a simple and safe option for both customers and companies. OnePay is an all-inclusive online payment platform that is intended to simplify and expedite the payment process further.
**A Comprehensive Solution for Businesses**
OnePay is not just another payment gateway; it is a comprehensive solution that integrates with a wide variety of e-commerce platforms, ensuring that businesses of all sizes can benefit from its features. Its user-friendly interface and robust functionality allow merchants to accept payments from a variety of sources, including credit and debit cards, mobile wallets, and even direct bank transfers. This flexibility is crucial in an era where consumers expect to have multiple payment options at their disposal.
**Unparalleled Security Measures**
One of the standout features of OnePay is its commitment to security. In an age where cyber threats are a constant concern, OnePay employs state-of-the-art encryption and fraud detection measures to protect both merchants and customers. This focus on security helps to build trust, a vital component for any successful [online pay platform](https://www.onepay.com/ecommerce-payment-gateway/?utm_source=dev&utm_medium=seo&utm_campaign=blog_submission&utm_id=enosh). By ensuring that all transactions are safe and secure, OnePay enables businesses to focus on growth and customer satisfaction.
**Global Reach and Accessibility**
Another significant advantage of OnePay is its global reach. As an [online pay portal](https://www.onepay.com/?utm_source=dev&utm_medium=seo&utm_campaign=blog_submission&utm_id=enosh), it supports multiple currencies and languages, making it an ideal choice for businesses looking to expand their operations internationally. This global capability is complemented by OnePay's responsive customer support, which is available 24/7 to assist with any issues that may arise. This ensures that businesses can operate smoothly and efficiently, no matter where they are located.
**
Easy Integration and Analytics**
Integration with OnePay is straightforward, thanks to its comprehensive API documentation and developer support. This allows businesses to quickly and easily add OnePay to their existing systems, reducing the time and cost associated with implementing a new payment gateway. Moreover, OnePay's analytics and reporting tools provide valuable insights into transaction patterns and customer behavior, helping businesses to make informed decisions and optimize their operations.
**Conclusion**
In conclusion, OnePay is more than just a payment gateway; it is a robust online pay platform that offers unparalleled security, flexibility, and global reach. By providing a seamless and secure payment experience, OnePay empowers businesses to thrive in the digital age. Whether you are a small startup or a large multinational corporation, OnePay is the online pay portal that can help you achieve your financial goals and enhance customer satisfaction.
| david_mark_61fd09e0f67a52 |
1,878,200 | Chart of the Week: Visualizing Gender Parity in Industrial Employment with .NET MAUI Bubble Chart | TL;DR: Visualize the gender parity in industrial employment using the Syncfusion .NET MAUI Bubble... | 0 | 2024-06-07T02:48:07 | https://www.syncfusion.com/blogs/post/dotnetmaui-bubble-chart-gender-parity | dotnetmaui, chart, desktop, mobile | ---
title: Chart of the Week: Visualizing Gender Parity in Industrial Employment with .NET MAUI Bubble Chart
published: true
date: 2024-06-05 12:36:05 UTC
tags: dotnetmaui, chart, desktop, mobile
canonical_url: https://www.syncfusion.com/blogs/post/dotnetmaui-bubble-chart-gender-parity
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/luvw0raiqshvo2jeozu6.png
---
**TL;DR:** Visualize the gender parity in industrial employment using the Syncfusion .NET MAUI Bubble Chart. Learn to gather and bind data to the chart. We’ll also customize the chart by adding titles, legends, tooltip interactivity, and more.
Welcome to our **Chart of the Week** blog series!
This week’s edition will examine the gender distribution in industrial employment for 2019. This visualization will illustrate the contributions of males and females in the industrial sector across various countries based on their continents, highlighting the balance and diversity within the workforce.
In this blog, we’ll use the [Syncfusion .NET MAUI Bubble Chart](https://www.syncfusion.com/maui-controls/maui-cartesian-charts/chart-types/maui-bubble-chart ".NET MAUI Bubble Chart") to explore how to represent this data effectively. It provides a step-by-step walkthrough for setting up your development environment, creating the Bubble Chart, and interpreting the data.
Refer to the following image.[](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Visualizing-Gender-Parity-in-Industrial-Employment-with-.NET-MAUI-Bubble-Chart-1.png)
Let’s get started!
## Step 1: Gathering the data
Our journey begins by gathering data on [gender distribution in industrial employment](https://ourworldindata.org/grapher/share-of-male-vs-female-employment-in-industry?time=2019&country=AFG~ARM~AZE~BHR~BGD~BTN~BRN~KHM~CHN~TLS~GEO~HKG~IND~IDN~IRN~IRQ~ISR~JPN~JOR~KAZ~KWT~KGZ~LAO~LBN~MAC~MYS~MDV~MNG~MMR~NPL~PRK~OMN~PAK~PSE~PHL~QAT~SAU~SGP~KOR~LKA~SYR~TJK~THA~TUR~TKM~ARE~UZB~VNM~YEM~ARG~BOL~BRA~CHL~COL~ECU~GUY~PRY~PER~SUR~URY~VEN~AUS~FJI~PYF~GUM~NCL~NZL~PNG~WSM~SLB~TON~VUT~ALB~AUT~BLR~BEL~BIH~BGR~OWID_CIS~HRV~CYP~CZE~DNK~EST~FIN~FRA~DEU~GRC~HUN~ISL~IRL~ITA~LVA~LTU~LUX~MLT~MDA~MNE~NLD~MKD~NOR~POL~PRT~ROU~RUS~SRB~SVK~SVN~ESP~SWE~CHE~UKR~GBR~BHS~BRB~BLZ~CAN~CRI~CUB~DOM~SLV~GTM~HTI~HND~JAM~MEX~NIC~PAN~PRI~LCA~VCT~TTO~USA~VIR~DZA~AGO~BEN~BWA~BFA~BDI~CMR~CPV~CAF~TCD~COM~COG~CIV~COD~DJI~EGY~GNQ~ERI~SWZ~ETH~GAB~GMB~GHA~GIN~GNB~KEN~LSO~LBR~LBY~MDG~MWI~MLI~MRT~MUS~MAR~MOZ~NAM~NER~NGA~RWA~STP~SEN~SLE~SOM~ZAF~SSD~SDN~TZA~TGO~TUN~UGA~ZMB~ZWE "Share of male vs. female employment in industry, 2019") for various countries in 2019.
## Step 2: Preparing the data for the chart
Next, we’ll create a custom **EmploymentDistributionModel** class with **Country**, **ShareOfMale**, **ShareOfFemale**, **Population**, and **Continent** properties to store the percentage of male and female laborers in industrial sectors data for different countries.
Refer to the following code example.
```csharp
public class EmploymentDistributionModel
{
public string Country { get; set; }
public double ShareOfFemale { get; set; }
public double ShareOfMale { get; set; }
public double Population { get; set; }
public string Continent { get; set; }
}
```
Then, generate the employment distribution data collection using the **EmploymentDistributionData** class and **AllCountriesData** property. Assign the CSV data to the employment distribution data collection using the **ReadCSV** method and store it in the **AllCountriesData** property.
Additionally, expose the **Asia**, **Africa**, **SouthAmerica**, **NorthAmerica**, **Europe**, and **Oceania** properties to store the countries’ data respective to their continents.
Refer to the following code example.
```csharp
public class EmploymentDistributionData
{
public List<EmploymentDistributionModel> AllCountriesData { get; set; }
public List<EmploymentDistributionModel> Asia { get; set; }
public List<EmploymentDistributionModel> Africa { get; set; }
public List<EmploymentDistributionModel> SouthAmerica { get; set; }
public List<EmploymentDistributionModel> NorthAmerica { get; set; }
public List<EmploymentDistributionModel> Oceania { get; set; }
public List<EmploymentDistributionModel> Europe { get; set; }
public EmploymentDistributionData()
{
AllCountriesData = new List<EmploymentDistributionModel>(ReadCSV());
Asia = AllCountriesData.Where(d => d.Continent == "Asia").ToList();
Africa = AllCountriesData.Where(d => d.Continent == "Africa").ToList();
Europe = AllCountriesData.Where(d => d.Continent == "Europe").ToList();
SouthAmerica = AllCountriesData.Where(d => d.Continent == "South America").ToList();
NorthAmerica = AllCountriesData.Where(d => d.Continent == "North America").ToList();
Oceania = AllCountriesData.Where(d => d.Continent == "Oceania").ToList();
}
public static IEnumerable<EmploymentDistributionModel> ReadCSV()
{
Assembly executingAssembly = typeof(App).GetTypeInfo().Assembly;
Stream inputStream = executingAssembly.GetManifestResourceStream("EmployementDistribution.Resources.Raw.data.csv");
string line;
List<string> lines = new();
using StreamReader reader = new(inputStream);
while ((line = reader.ReadLine()) != null)
{
lines.Add(line);
}
lines.RemoveAt(0);
return lines.Select(line =>
{
string[] data = line.Split(',');
return new EmploymentDistributionModel(data[0], Convert.ToDouble(data[2]), Convert.ToDouble(data[3]), Convert.ToDouble(data[4]), data[5]);
});
}
}
```
## Step 3: Configuring the Syncfusion .NET MAUI Charts control
Let’s configure the Syncfusion .NET MAUI Charts control using this [documentation](https://help.syncfusion.com/maui/cartesian-charts/getting-started "Getting started with .NET MAUI Cartesian Charts").
Refer to the following code example.
```xml
<ContentPage xmlns:chart="clr-namespace:Syncfusion.Maui.Charts;assembly=Syncfusion.Maui.Charts"
xmlns:local="clr-namespace:EmployementDistribution">
<chart:SfCartesianChart>
<chart:SfCartesianChart.XAxes>
<chart:LogarithmicAxis />
</chart:SfCartesianChart.XAxes>
<chart:SfCartesianChart.YAxes>
<chart:NumericalAxis/>
</chart:SfCartesianChart.YAxes>
</chart:SfCartesianChart>
```
## Step 4: Bind the data to the .NET MAUI Bubble Chart
Let’s bind the data on gender distribution in industrial employment to the [Bubble series](https://help.syncfusion.com/maui/cartesian-charts/bubble "Getting started with the Bubble Chart in .NET MAUI").
Refer to the following code example.
```xml
<!--Asian Countries Series-->
<chart:BubbleSeries ItemsSource="{Binding Asia}"
XBindingPath="ShareOfFemale"
YBindingPath="ShareOfMale"
SizeValuePath="Population"/>
<!--African Countries Series-->
<chart:BubbleSeries ItemsSource="{Binding Africa}"
XBindingPath="ShareOfFemale"
YBindingPath="ShareOfMale"
SizeValuePath="Population"/>
<!--European Countries Series-->
<chart:BubbleSeries ItemsSource="{Binding Europe}"
XBindingPath="ShareOfFemale"
YBindingPath="ShareOfMale"
SizeValuePath="Population"/>
<!--SouthAmerican Countries Series-->
<chart:BubbleSeries ItemsSource="{Binding SouthAmerica}"
XBindingPath="ShareOfFemale"
YBindingPath="ShareOfMale"
SizeValuePath="Population"/>
<!--NorthAmerican Countries Series-->
<chart:BubbleSeries ItemsSource="{Binding NorthAmerica}"
XBindingPath="ShareOfFemale"
YBindingPath="ShareOfMale"
SizeValuePath="Population"/>
<!--Oceania Countries Series-->
<chart:BubbleSeries ItemsSource="{Binding Oceania}"
XBindingPath="ShareOfFemale"
YBindingPath="ShareOfMale"
SizeValuePath="Population"/>
```
In this example, we bound the Bubble Chart with **Asia**, **Africa**, **NorthAmerica**, **SouthAmerica**, **Europe**, and **Oceania** data collection with the [ItemsSource](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.ChartSeries.html#Syncfusion_Maui_Charts_ChartSeries_ItemsSource "ItemsSource property of .NET MAUI Charts") property, which contains the percentage of male and female workers in industrial sectors and populations for different countries. Additionally, we’ve specified the [XBindingPath](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.ChartSeries.html#Syncfusion_Maui_Charts_ChartSeries_XBindingPath "XBindingPath property of .NET MAUI Charts"), [YBindingPath](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.XYDataSeries.html#Syncfusion_Maui_Charts_XYDataSeries_YBindingPath "YBindingPath property of .NET MAUI Charts"), and [SizeValuePath](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.BubbleSeries.html#Syncfusion_Maui_Charts_BubbleSeries_SizeValuePath "SizeValuePath property of .NET MAUI Charts") with the **ShareOfFemale**, **ShareOfMale**, and **Population** properties, respectively.
The [SizeValuePath](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.BubbleSeries.html#Syncfusion_Maui_Charts_BubbleSeries_SizeValuePath "SizeValuePath property of .NET MAUI Charts") is often used to indicate the quantitative value associated with each data point. This quantitative value could be anything relevant to the dataset, such as population size, revenue, and sales volume. Here, the size of the bubble will correspond to the country’s population, allowing us to compare the percentage of female and male workers in each industry and the employment percentage in each country.
## Step 5: Customizing the chart appearance
Now, let’s customize the [Syncfusion .NET MAUI Bubble Chart](https://help.syncfusion.com/maui/cartesian-charts/bubble "Getting started with the Bubble Chart in .NET MAUI")’s appearance by changing the chart title, axis element’s appearance, using selection to highlight the selected country, and showing the tooltip with a customized template to show detailed information about the Bubble data point.
### Customizing the chart title
Now, we can improve the readability of the plotted data by including the title with a description in the chart, as shown in the following code example.
```xml
<chart:SfCartesianChart.Title>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="{OnPlatform Android=49*,WinUI=59*,MacCatalyst=59*,iOS=49*}"/>
</Grid.ColumnDefinitions>
<VerticalStackLayout Background="#01BEFE" Margin="10,15,0,15" Grid.Column="0" Grid.RowSpan="2"/>
<VerticalStackLayout Grid.Column="1" Margin="5">
<Label Text="Comparative Analysis of Gender Representation in Industrial Employment in 2019" FontSize="14" FontFamily="centurygothic" Padding="0,10,5,5" HorizontalTextAlignment="Start"/>
<Label Text="This chart illustrates the gender distribution within the industrial sector in 2019, comparing the representation of female and male employees." HorizontalTextAlignment="Start" FontSize="{OnPlatform Android=10,WinUI=12,MacCatalyst=16,iOS=11}" FontFamily="centurygothic" TextColor="Grey" Padding="0,0,0,10"/>
</VerticalStackLayout>
</Grid>
</chart:SfCartesianChart.Title>
```
### Customizing the legend
Let’s customize the chart legend. Add a [Label](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.CartesianSeries.html#Syncfusion_Maui_Charts_CartesianSeries_Label "Label property of .NET MAUI Charts") for each series of charts that will be displayed with the corresponding legend. Then, use the [ToggleSeriesVisibility](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.ChartLegend.html#Syncfusion_Maui_Charts_ChartLegend_ToggleSeriesVisibility "ToggleSeriesVisibility property of .NET MAUI Charts") property to show or hide the continents’ countries in the chart.
Refer to the following code example.
```xml
<chart:SfCartesianChart.Legend>
<chart:ChartLegend ToggleSeriesVisibility="True"/>
</chart:SfCartesianChart.Legend>
<chart:BubbleSeries Label="Asia"/>
<chart:BubbleSeries Label="Africa"/>
<chart:BubbleSeries Label="Europe"/>
<chart:BubbleSeries Label="South America "/>
<chart:BubbleSeries Label="North America "/>
<chart:BubbleSeries Label="Oceania"/>
```
### Customizing the chart axis
Let’s customize the X and Y axes with the [Minimum](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.LogarithmicAxis.html#Syncfusion_Maui_Charts_LogarithmicAxis_Minimum "Minimum property of .NET MAUI Charts"), [Maximum](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.LogarithmicAxis.html#Syncfusion_Maui_Charts_LogarithmicAxis_Maximum "Maximum property of .NET MAUI Charts"), [EdgeLabelsDrawingMode](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.ChartAxis.html#Syncfusion_Maui_Charts_ChartAxis_EdgeLabelsDrawingMode "EdgeLabelsDrawingMode property of .NET MAUI Charts"), and [ShowMajorGridLines](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.ChartAxis.html#Syncfusion_Maui_Charts_ChartAxis_ShowMajorGridLines "ShowMajorGridLines property of .NET MAUI Charts") properties as well as the axis **Title**, **LabelStyle**, **LineStyle**, and **TickStyle** properties.
Refer to the following code example.
```xml
<chart:SfCartesianChart.XAxes>
<chart:NumericalAxis EdgeLabelsDrawingMode="Shift" ShowMajorGridLines="False">
<chart:NumericalAxis.Title>
<chart:ChartAxisTitle Text="% of Female Labor Force in Industrial Employment" FontSize="{OnPlatform Android=12,WinUI=13,MacCatalyst=13,iOS=10}"/>
</chart:NumericalAxis.Title>
<chart:NumericalAxis.LabelStyle>
<chart:ChartAxisLabelStyle LabelFormat="0'%"/>
</chart:NumericalAxis.LabelStyle>
<chart:NumericalAxis.AxisLineStyle>
<chart:ChartLineStyle StrokeWidth="0"/>
</chart:NumericalAxis.AxisLineStyle>
<chart:NumericalAxis.MajorTickStyle>
<chart:ChartAxisTickStyle Stroke="#e6e6e6"/>
</chart:NumericalAxis.MajorTickStyle>
</chart:NumericalAxis>
</chart:SfCartesianChart.XAxes>
<chart:SfCartesianChart.YAxes>
<chart:NumericalAxis EdgeLabelsDrawingMode="Fit" Interval="{OnPlatform Android=11,iOS=10,WinUI=5,MacCatalyst=5}">
<chart:NumericalAxis.Title>
<chart:ChartAxisTitle Text="% of Male Labor Force in Industrial Employment" FontSize="{OnPlatform Android=10,WinUI=13,MacCatalyst=13,iOS=10}"/>
</chart:NumericalAxis.Title>
<chart:NumericalAxis.LabelStyle>
<chart:ChartAxisLabelStyle LabelFormat="0'%"/>
</chart:NumericalAxis.LabelStyle>
<chart:NumericalAxis.AxisLineStyle>
<chart:ChartLineStyle StrokeWidth="0"/>
</chart:NumericalAxis.AxisLineStyle>
<chart:NumericalAxis.MajorTickStyle>
<chart:ChartAxisTickStyle Stroke="#e6e6e6"/>
</chart:NumericalAxis.MajorTickStyle>
</chart:NumericalAxis>
</chart:SfCartesianChart.YAxes>
```
### Adding interactivity to the chart
Let’s enhance the series by enabling the tooltip with the [TooltipTemplate](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.ChartSeries.html#Syncfusion_Maui_Charts_ChartSeries_TooltipTemplate "TooltipTemplate property of .NET MAUI Charts") property to show the details of the countries.
Refer to the following code example.
```xml
<chart:SfCartesianChart.Resources>
<ResourceDictionary>
<local:PopulationValueConver x:Key="populationValueConverter"/>
<DataTemplate x:Key="template">
<StackLayout>
<Label Text="{Binding Item.Country}" HorizontalTextAlignment="Center" HorizontalOptions="Center" VerticalTextAlignment="Center" TextColor="White" FontAttributes="Bold" FontFamily="Helvetica" Margin="0,2,0,2" FontSize="12" Grid.Row="0" Padding="0,1"/>
<BoxView Color="Gray" HeightRequest="1" HorizontalOptions="Fill" Margin="2,0,2,0"/>
<Grid Padding="3">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Label Grid.Row="0" Text="{Binding Item.ShareOfFemale,StringFormat='% of Female Employment : {0}%'}" TextColor="white" FontFamily="Helvetica" FontSize="12"/>
<Label Grid.Row="1" Text="{Binding Item.ShareOfMale,StringFormat='% of Male Employment : {0}%'}" TextColor="white" FontFamily="Helvetica" FontSize="12"/>
<Label Grid.Row="2" Text="{Binding Item.Population,Converter={StaticResource populationValueConverter},StringFormat='Population : {0}'}" TextColor="white" FontFamily="Helvetica" FontSize="12"/>
</Grid>
</StackLayout>
</DataTemplate>
</ResourceDictionary>
</chart:SfCartesianChart.Resources>
<!--Asian Countries Series-->
<chart:BubbleSeries EnableTooltip="True" TooltipTemplate="{StaticResource template}"/>
<!--African Countries Series-->
<chart:BubbleSeries EnableTooltip="True" TooltipTemplate="{StaticResource template}"/>
<!--European Countries Series-->
<chart:BubbleSeries EnableTooltip="True" TooltipTemplate="{StaticResource template}"/>
<!--SouthAmerican Countries Series-->
<chart:BubbleSeries EnableTooltip="True" TooltipTemplate="{StaticResource template}"/>
<!--NorthAmerican Countries Series-->
<chart:BubbleSeries EnableTooltip="True" TooltipTemplate="{StaticResource template}"/>
<!--Oceania Countries Series-->
<chart:BubbleSeries EnableTooltip="True" TooltipTemplate="{StaticResource template}"/>
```
Let’s further enhance the chart with the series selection feature using the [SeriesSelectionBehavior](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.SeriesSelectionBehavior.html "SeriesSelectionBehavior class of .NET MAUI Charts"). This will enable us to highlight the selected series with the help of the [SelectionChanging](https://help.syncfusion.com/cr/maui/Syncfusion.Maui.Charts.ChartSelectionBehavior.html#Syncfusion_Maui_Charts_ChartSelectionBehavior_SelectionChanging "SelectionChanging event of .NET MAUI Charts") event.
**XAML**
```xml
<chart:SfCartesianChart.SelectionBehavior>
<chart:SeriesSelectionBehavior Type="Single" SelectionChanging="SeriesSelectionBehavior_SelectionChanging"/>
</chart:SfCartesianChart.SelectionBehavior>
```
**C#**
```csharp
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
}
List<int> SelectedIndexes = new List<int>();
List<SolidColorBrush> Brushes = new List<SolidColorBrush>
{
new SolidColorBrush(Color.FromArgb("#01BEFE")),
new SolidColorBrush(Color.FromArgb("#FFDD00")),
new SolidColorBrush(Color.FromArgb("#FF7D00")),
new SolidColorBrush(Color.FromArgb("#FF006D")),
new SolidColorBrush(Color.FromArgb("#ADFF02")),
new SolidColorBrush(Color.FromArgb("#8F00FF")),
};
List<SolidColorBrush> AlphaBrushes = new List<SolidColorBrush>
{
new SolidColorBrush(Color.FromArgb("#3501BEFE")),
new SolidColorBrush(Color.FromArgb("#35FFDD00")),
new SolidColorBrush(Color.FromArgb("#35FF7D00")),
new SolidColorBrush(Color.FromArgb("#35FF006D")),
new SolidColorBrush(Color.FromArgb("#35ADFF02")),
new SolidColorBrush(Color.FromArgb("#358F00FF")),
};
private void SeriesSelectionBehavior_SelectionChanging(object sender, ChartSelectionChangingEventArgs e)
{
foreach (var index in e.NewIndexes)
{
if (!SelectedIndexes.Contains(index))
{
SelectedIndexes.Add(index);
}
}
foreach (var index in e.OldIndexes)
{
if (SelectedIndexes.Contains(index))
{
SelectedIndexes.Remove(index);
}
else if (e.NewIndexes.Count == 0)
{
SelectedIndexes.Add(index);
}
}
if (SelectedIndexes.Count == 0)
{
foreach (var series in myChart.Series)
{
series.Fill = Brushes[myChart.Series.IndexOf(series)];
}
}
else
{
foreach (var series in myChart.Series)
{
series.Fill = AlphaBrushes[myChart.Series.IndexOf(series)];
}
foreach (var index in SelectedIndexes)
{
myChart.Series[index].Fill = Brushes[index];
}
}
}
}
```
After executing the above code examples, we’ll get the output like in the following GIF image.
<figure>
<img src="https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Visualizing-Gender-Parity-in-Industrial-Employment-with-.NET-MAUI-Bubble-Chart.gif" alt="Visualizing Gender Parity in Industrial Employment with .NET MAUI Bubble Chart" style="width:100%">
<figcaption>Visualizing Gender Parity in Industrial Employment with .NET MAUI Bubble Chart</figcaption>
</figure>
## GitHub reference
For more details, refer to the project on [GitHub](https://github.com/SyncfusionExamples/Creating-.NET-MAUI-Bubble-chart-to-visualize-Gender-distribution-in-Industrial-employment-in-2019/tree/master "Creating .NET MAUI Bubble Chart to visualize gender distribution in industrial employment GitHub demo").
## Conclusion
Thanks for reading! In this blog, we’ve seen how to visualize the percentage of male and female workers in the industrial sector using the [Syncfusion .NET MAUI Bubble Chart](https://help.syncfusion.com/maui/cartesian-charts/bubble "Getting started with the Bubble Chart in .NET MAUI"). We strongly encourage you to follow the steps discussed in this blog and share your thoughts in the comments below.
If you require assistance, you can contact us through our [support forums](https://www.syncfusion.com/forums "Syncfusion Support Forum"), [support portal](https://support.syncfusion.com/ "Syncfusion Support Portal"), or [feedback portal](https://www.syncfusion.com/feedback "Syncfusion Feedback Portal"). We are always happy to assist you!
See you in our next blog!
## Related blogs
- [Develop a Travel Destination List UI with .NET MAUI ListView [Webinar Show Notes]](https://www.syncfusion.com/blogs/post/travel-list-ui-maui-listview-webinar "Blog: Develop a Travel Destination List UI with .NET MAUI ListView [Webinar Show Notes]")
- [Chart of the Week: Creating a .NET MAUI Histogram Chart to Display the Distribution of Atomic Weights in the Periodic Table](https://www.syncfusion.com/blogs/post/maui-histogram-chart-periodic-table "Blog: Chart of the Week: Creating a .NET MAUI Histogram Chart to Display the Distribution of Atomic Weights in the Periodic Table")
- [Chart of the Week: Creating a .NET MAUI Line Chart with Plot Bands to Explore Global GNI Per Capita with Income Thresholds](https://www.syncfusion.com/blogs/post/dotnet-maui-line-chart-gni-per-capita-plot-bands "Blog: Chart of the Week: Creating a .NET MAUI Line Chart with Plot Bands to Explore Global GNI Per Capita with Income Thresholds") | jollenmoyani |
1,878,027 | Basic React JS Router and Components | React JS Router is a library that enables navigation between different components in a React... | 0 | 2024-06-05T12:35:55 | https://dev.to/shaiquehossain/basic-react-js-router-and-components-2df8 | react, router, webdev | [React JS Router](https://www.almabetter.com/bytes/tutorials/reactjs/basic-reactjs-router) is a library that enables navigation between different components in a React application. It provides a <Router> component to manage the routing functionality. Components can be rendered conditionally based on the current URL using <Route> components, which define paths and corresponding components. Navigation between routes is achieved using <Link> components, which generate anchor tags. Components used with React Router include BrowserRouter, Route, Switch, Link, and NavLink. These components facilitate the creation of single-page applications with multiple views, enabling seamless navigation and rendering of different components based on URL changes. | shaiquehossain |
1,877,834 | Graphs, Data Structures | Graphs Graphs are fundamental data structures in computer science and discrete... | 0 | 2024-06-05T12:35:30 | https://dev.to/harshm03/graphs-data-structures-43f9 | dsa, datastructures, graphs | ## Graphs
Graphs are fundamental data structures in computer science and discrete mathematics. They are used to represent pairwise relations between objects. Understanding the theoretical underpinnings of graphs is essential for leveraging their full potential in various applications.
### What is a Graph?
A graph G consists of a set of vertices V and a set of edges E connecting pairs of vertices. Formally, a graph is defined as G = (V, E).
### Types of Graphs
- **Undirected Graphs:** In an undirected graph, edges have no direction. If there is an edge between vertices u and v, it can be traversed in both directions.
- **Directed Graphs (Digraphs):** In a directed graph, edges have a direction. An edge from vertex u to vertex v is denoted as (u, v), indicating the direction from u to v.
### Graph Terminology
- **Vertex (Node):** A fundamental unit of a graph.
- **Edge (Link):** A connection between two vertices.
- **Degree:** The number of edges incident to a vertex.
- **Path:** A sequence of vertices where each adjacent pair is connected by an edge.
### Graph Representations
- **Adjacency Matrix:** A 2D array where matrix[i][j] = 1 if there is an edge from vertex i to vertex j, otherwise 0.
- **Pros:** Simple, quick edge existence check.
- **Cons:** Memory-intensive for sparse graphs.
- **Adjacency List:** An array of lists. Each index i contains a list of vertices that are adjacent to vertex i.
- **Pros:** Space-efficient for sparse graphs, faster traversal.
- **Cons:** Slower edge existence check compared to adjacency matrix.
## Graph Implementation Using Adjacency Matrix in C++
Graph implementation using an adjacency matrix in C++ provides a compact and straightforward way to represent graphs. Adjacency matrices are suitable for dense graphs where most vertices are connected, as they offer constant-time edge existence checks.
### Creation of the Graph
To create a graph using an adjacency matrix in C++, we define a class that contains the basic attributes and methods required to manage the graph. Below is the initial part of the class definition, including the basic attributes and the constructor.
```cpp
#include <iostream>
#include <vector>
using namespace std;
class Graph {
private:
int V; // Number of vertices
vector<vector<int>> adj; // Adjacency matrix
public:
Graph(int vertices) {
V = vertices;
adj.resize(V, vector<int>(V, 0)); // Initialize adjacency matrix with all zeros
}
// Other methods for graph operations will be added here
};
```
### Attributes Explanation
1. **V**: This integer variable stores the number of vertices in the graph.
2. **adj**: This 2D vector serves as the adjacency matrix to represent the connections between vertices. Each element adj[i][j] indicates whether there is an edge from vertex i to vertex j. Initialized with all zeros in the constructor.
### Constructor Explanation
The constructor `Graph(int vertices)` initializes the graph with a specified number of vertices:
- **V = vertices**: Sets the number of vertices in the graph to the specified value.
- **adj.resize(V, vector<int>(V, 0))**: Resizes the adjacency matrix to V x V size and initializes all elements to 0, indicating no edges initially.
This setup provides the basic framework for the graph, allowing us to build upon it with additional methods for operations such as adding edges, traversing the graph, and finding shortest paths. The constructor ensures that the graph is properly initialized with the specified number of vertices and is ready for further operations.
### Operations on Graph
Operations on graphs involve various tasks such as adding or removing edges, traversing the graph, finding shortest paths, and detecting cycles. Each operation serves a specific purpose in graph manipulation and analysis.
Fundamental operations on graphs include adding and removing edges, which modify the connectivity between vertices.
#### Adding Edge
Adding an edge to a graph establishes a connection between two vertices, creating a relationship between them.
```cpp
void addEdge(int u, int v) {
adj[u][v] = 1;
// For undirected graphs, uncomment the line below
// adj[v][u] = 1;
}
```
`Time Complexity: O(1)`
#### Removing Edge
Removing an edge from a graph disconnects two vertices, removing the relationship between them.
```cpp
void removeEdge(int u, int v) {
adj[u][v] = 0;
// For undirected graphs, uncomment the line below
// adj[v][u] = 0;
}
```
`Time Complexity: O(1)`
These fundamental operations allow us to modify the structure of the graph by adding or removing connections between vertices. They are essential building blocks for more complex graph algorithms and operations.
### Graph Traversal
Graph traversal involves visiting all the vertices of a graph in a systematic way. Traversal algorithms help explore the structure of the graph and can be used to perform various tasks such as finding paths, detecting cycles, and discovering connected components.
#### Depth-First Search (DFS)
Depth-First Search (DFS) is a graph traversal algorithm that explores as far as possible along each branch before backtracking. It starts at a chosen vertex and explores as far as possible along each branch before backtracking.
```cpp
#include <stack>
void DFS(int start) {
vector<bool> visited(V, false);
stack<int> stk;
stk.push(start);
visited[start] = true;
while (!stk.empty()) {
int v = stk.top();
stk.pop();
cout << v << " ";
for (int i = 0; i < V; ++i) {
if (adj[v][i] && !visited[i]) {
visited[i] = true;
stk.push(i);
}
}
}
}
```
`Time Complexity: O(V + E)`
#### Breadth-First Search (BFS)
Breadth-First Search (BFS) is a graph traversal algorithm that explores all the neighboring vertices of a chosen vertex before moving to the next level of vertices.
```cpp
#include <queue>
void BFS(int start) {
vector<bool> visited(V, false);
queue<int> q;
q.push(start);
visited[start] = true;
while (!q.empty()) {
int v = q.front();
q.pop();
cout << v << " ";
for (int i = 0; i < V; ++i) {
if (adj[v][i] && !visited[i]) {
visited[i] = true;
q.push(i);
}
}
}
}
```
`Time Complexity: O(V + E)`
Graph traversal algorithms provide essential mechanisms for exploring the structure of graphs and discovering their properties. They are foundational in graph analysis and play a crucial role in various graph-based algorithms and applications.
### Full Code Implementation of Graphs Using Adjacency Matrix in C++
Graph implementation using an adjacency matrix in C++ provides a compact and straightforward way to represent graphs. Adjacency matrices are suitable for dense graphs where most vertices are connected, as they offer constant-time edge existence checks.
This implementation includes the creation of a graph class with methods for adding and removing edges, as well as traversal algorithms such as depth-first search (DFS) and breadth-first search (BFS).
```cpp
#include <iostream>
#include <vector>
#include <stack>
#include <queue>
using namespace std;
class Graph {
private:
int V; // Number of vertices
vector<vector<int>> adj; // Adjacency matrix
public:
Graph(int vertices) {
V = vertices;
adj.resize(V, vector<int>(V, 0)); // Initialize adjacency matrix with all zeros
}
void addEdge(int u, int v) {
adj[u][v] = 1;
// For undirected graphs, uncomment the line below
// adj[v][u] = 1;
}
void removeEdge(int u, int v) {
adj[u][v] = 0;
// For undirected graphs, uncomment the line below
// adj[v][u] = 0;
}
void DFS(int start) {
vector<bool> visited(V, false);
stack<int> stk;
stk.push(start);
visited[start] = true;
while (!stk.empty()) {
int v = stk.top();
stk.pop();
cout << v << " ";
for (int i = 0; i < V; ++i) {
if (adj[v][i] && !visited[i]) {
visited[i] = true;
stk.push(i);
}
}
}
}
void BFS(int start) {
vector<bool> visited(V, false);
queue<int> q;
q.push(start);
visited[start] = true;
while (!q.empty()) {
int v = q.front();
q.pop();
cout << v << " ";
for (int i = 0; i < V; ++i) {
if (adj[v][i] && !visited[i]) {
visited[i] = true;
q.push(i);
}
}
}
}
};
int main() {
// Create a graph with 5 vertices
Graph graph(5);
// Add some edges
graph.addEdge(0, 1);
graph.addEdge(0, 2);
graph.addEdge(1, 3);
graph.addEdge(2, 4);
cout << "Depth-First Search (DFS): ";
graph.DFS(0);
cout << endl;
cout << "Breadth-First Search (BFS): ";
graph.BFS(0);
cout << endl;
return 0;
}
```
This code demonstrates the creation of a graph class using an adjacency matrix representation in C++. It includes methods for adding and removing edges, as well as depth-first search (DFS) and breadth-first search (BFS) traversal algorithms.
## Graph Implementation Using Adjacency List in C++
Graph implementation using an adjacency list in C++ provides a flexible and memory-efficient way to represent graphs. Adjacency lists are suitable for sparse graphs where only a few vertices are connected, as they offer efficient memory usage and traversal.
### Creation of the Graph
To create a graph using an adjacency list in C++, we define a class that contains the basic attributes and methods required to manage the graph. Below is the initial part of the class definition, including the basic attributes and the constructor.
```cpp
#include <iostream>
#include <vector>
using namespace std;
class Graph {
private:
int V; // Number of vertices
vector<vector<int>> adj; // Adjacency list
public:
Graph(int vertices) {
V = vertices;
adj.resize(V); // Initialize adjacency list
}
// Other methods for graph operations will be added here
};
```
### Attributes Explanation
1. **V**: This integer variable stores the number of vertices in the graph.
2. **adj**: This vector of vectors serves as the adjacency list to represent the connections between vertices. Each vector adj[i] contains the indices of vertices adjacent to vertex i.
### Constructor Explanation
The constructor `Graph(int vertices)` initializes the graph with a specified number of vertices:
- **V = vertices**: Sets the number of vertices in the graph to the specified value.
- **adj.resize(V)**: Resizes the adjacency list to V size, initializing it with empty vectors for each vertex.
This setup provides the basic framework for the graph, allowing us to build upon it with additional methods for operations such as adding edges, traversing the graph, and finding shortest paths. The constructor ensures that the graph is properly initialized with the specified number of vertices and is ready for further operations.
### Operations on Graph
Operations on graphs involve various tasks such as adding or removing edges, traversing the graph, finding shortest paths, and detecting cycles. Each operation serves a specific purpose in graph manipulation and analysis.
Fundamental operations on graphs include adding and removing edges, which modify the connectivity between vertices.
#### Adding Edge
Adding an edge to a graph establishes a connection between two vertices, creating a relationship between them.
```cpp
void addEdge(int u, int v) {
adj[u].push_back(v);
// For undirected graphs, uncomment the line below
// adj[v].push_back(u);
}
```
`Time Complexity: O(1)`
#### Removing Edge
Removing an edge from a graph disconnects two vertices, removing the relationship between them.
```cpp
void removeEdge(int u, int v) {
for (int i = 0; i < adj[u].size(); ++i) {
if (adj[u][i] == v) {
adj[u].erase(adj[u].begin() + i);
break;
}
}
// For undirected graphs, uncomment the lines below
// for (int i = 0; i < adj[v].size(); ++i) {
// if (adj[v][i] == u) {
// adj[v].erase(adj[v].begin() + i);
// break;
// }
// }
}
```
`Time Complexity: O(V)`, where V is the number of vertices in the graph.
These fundamental operations allow us to modify the structure of the graph by adding or removing connections between vertices. They are essential building blocks for more complex graph algorithms and operations.
### Graph Traversal
Graph traversal involves visiting all the vertices of a graph in a systematic way. Traversal algorithms help explore the structure of the graph and can be used to perform various tasks such as finding paths, detecting cycles, and discovering connected components.
#### Depth-First Search (DFS)
Depth-First Search (DFS) is a graph traversal algorithm that explores as far as possible along each branch before backtracking. It starts at a chosen vertex and explores as far as possible along each branch before backtracking.
```cpp
#include <stack>
void DFS(int start) {
vector<bool> visited(V, false);
stack<int> stk;
stk.push(start);
visited[start] = true;
while (!stk.empty()) {
int v = stk.top();
stk.pop();
cout << v << " ";
for (int i = 0; i < adj[v].size(); ++i) {
int u = adj[v][i];
if (!visited[u]) {
visited[u] = true;
stk.push(u);
}
}
}
}
```
`Time Complexity: O(V + E)`
#### Breadth-First Search (BFS)
Breadth-First Search (BFS) is a graph traversal algorithm that explores all the neighboring vertices of a chosen vertex before moving to the next level of vertices.
```cpp
#include <queue>
void BFS(int start) {
vector<bool> visited(V, false);
queue<int> q;
q.push(start);
visited[start] = true;
while (!q.empty()) {
int v = q.front();
q.pop();
cout << v << " ";
for (int i = 0; i < adj[v].size(); ++i) {
int u = adj[v][i];
if (!visited[u]) {
visited[u] = true;
q.push(u);
}
}
}
}
```
`Time Complexity: O(V + E)`
Graph traversal algorithms provide essential mechanisms for exploring the structure of graphs and discovering their properties. They are foundational in graph analysis and play a crucial role in various graph-based algorithms and applications.
### Full Code Implementation of Graphs Using Adjacency List in C++
Graph implementation using an adjacency list in C++ provides a flexible and memory-efficient way to represent graphs. Adjacency lists are suitable for sparse graphs where few vertices are connected, as they offer efficient memory usage and traversal operations.
This implementation includes the creation of a graph class with methods for adding and removing edges, as well as traversal algorithms such as depth-first search (DFS) and breadth-first search (BFS).
```cpp
#include <iostream>
#include <vector>
#include <stack>
#include <queue>
using namespace std;
class Graph {
private:
int V; // Number of vertices
vector<vector<int>> adj; // Adjacency list
public:
Graph(int vertices) {
V = vertices;
adj.resize(V); // Initialize adjacency list
}
void addEdge(int u, int v) {
adj[u].push_back(v);
// For undirected graphs, uncomment the line below
// adj[v].push_back(u);
}
void removeEdge(int u, int v) {
for (auto it = adj[u].begin(); it != adj[u].end(); ++it) {
if (*it == v) {
adj[u].erase(it);
break;
}
}
// For undirected graphs, uncomment the line below
// for (auto it = adj[v].begin(); it != adj[v].end(); ++it) {
// if (*it == u) {
// adj[v].erase(it);
// break;
// }
// }
}
void DFS(int start) {
vector<bool> visited(V, false);
stack<int> stk;
stk.push(start);
visited[start] = true;
while (!stk.empty()) {
int v = stk.top();
stk.pop();
cout << v << " ";
for (int u : adj[v]) {
if (!visited[u]) {
visited[u] = true;
stk.push(u);
}
}
}
}
void BFS(int start) {
vector<bool> visited(V, false);
queue<int> q;
q.push(start);
visited[start] = true;
while (!q.empty()) {
int v = q.front();
q.pop();
cout << v << " ";
for (int u : adj[v]) {
if (!visited[u]) {
visited[u] = true;
q.push(u);
}
}
}
}
};
int main() {
// Create a graph with 5 vertices
Graph graph(5);
// Add some edges
graph.addEdge(0, 1);
graph.addEdge(0, 2);
graph.addEdge(1, 3);
graph.addEdge(2, 4);
cout << "Depth-First Search (DFS): ";
graph.DFS(0);
cout << endl;
cout << "Breadth-First Search (BFS): ";
graph.BFS(0);
cout << endl;
return 0;
}
```
This code demonstrates the creation of a graph class using an adjacency list representation in C++. It includes methods for adding and removing edges, as well as depth-first search (DFS) and breadth-first search (BFS) traversal algorithms. | harshm03 |
1,878,009 | Read me of our Open Source Project | Litlyx | 🌐 Website 📚 Docs 🔥 Start for Free! A single-line code analytics solution that integrates with... | 0 | 2024-06-05T12:34:13 | https://dev.to/litlyx/read-me-of-our-open-source-project-litlyx-2e85 | opensource, javascript, typescript, webdev | <h4 align="center">
🌐 <a href="https://litlyx.com">Website</a> 📚 <a href="https://docs.litlyx.com">Docs</a> 🔥 <a href="https://dashboard.litlyx.com">Start for Free!</a>
</h4>
<p align="center">
A single-line code analytics solution that integrates with every JavaScript/TypeScript framework. <br />
Track 10+ KPIs and as many custom events as you want for your website or web app.<br />
An AI Data Analyst Assistant ready to help you!
</p>
## ⭐️ Share some ❤️ and leave a Star on Our Repo
### [Github Open-Source Repo](https://github.com/Litlyx/litlyx)
## Join Litlyx's Community Channel on Discord
If you need more information, help, or want to provide general feedback, feel free to join us here: [Litlyx on Discord](https://discord.gg/9cQykjsmWX)
## Installation
You can install Litlyx using `npm`, `yarn`, or `pnpm`:
```sh
npm i litlyx
```
Or import it directly into your JavaScript code:
```html
<script defer data-project="project_id_here" src="https://cdn.jsdelivr.net/npm/litlyx/browser/litlyx.js"></script>
```
Importing Litlyx with a direct script already tracks 10 KPIs such as page visits, browsers, devices, OS, real-time online users, and many more.
> [!NOTE]
> - If you want to track custom events, you need to import the library with `npm`, `yarn`, or `pnpm`. Continue reading to find out more!
### You can find the official documentation: [here](https://docs.litlyx.com).
## Supported Frameworks
**Litlyx** natively supports all these JavaScript/TypeScript frameworks. You can use **Litlyx** in all WordPress projects by injecting JS code using plugins. You can even use **Litlyx** in cloud (or edge) functions in BaaS!
## Usage
**Litlyx** is very **simple to use**. The first thing is to import it into your code:
```js
import { Lit } from 'litlyx';
```
Once imported, you need to initialize Litlyx:
```js
Lit.init('your_project_id');
```
After this line, Litlyx will automatically track more than 10 KPIs for you.
> [!NOTE]
> - Create your first project for free! 👉 <a href="https://dashboard.litlyx.com">Create now!</a>
## Customize Your Experience by Tracking Custom Events
With Litlyx, you can create your own events to track in your project on the main CTA. Your creativity is the limit! Customize your experience like this:
```js
Lit.event('main_cta');
```
This is the minimal setup for an event. If you want more control over them, you can use the `metadata` field:
```js
Lit.event('pretty_cool_event', {
metadata: {
'tag': 'litlyx is awesome!',
'age': 27,
'score': 100.01,
'list': ['Hello', 'World!']
}
});
```
And that's it! You have set up your first custom event. From now on, you know how to set them up.
## Lit, the AI Data Analyst at Your Service
Litlyx comes with an integrated AI that can analyze your collected data and your entire history. It can compare data, query specific metadata, visualize charts, and much more.
You can have a `conversation` with Lit in the dashboard 👉 [here](https://dashboard.litlyx.com).
## ⭐️ Share some ❤️ and leave a Star on Our Repo
### [Github Open-Source Repo](https://github.com/Litlyx/litlyx)
## You Are Free to Self-Host Litlyx
**Litlyx** is completely open-source, and you are free to self-host it and create your own version of the dashboard. We are always open to conversations with all contributors to the project, so contact us at `helplitlyx@gmail.com` to schedule a call with us!
We hope to hear from you!
## Official Docs
Read the complete documentation at [https://docs.litlyx.com](https://docs.litlyx.com).
## Contact
Write to us at `helplitlyx@gmail.com` if you need to contact us.
## License
**Litlyx** is licensed under the [Apache 2.0](/LICENSE.md) license.
## ⭐️ Share some ❤️ and leave a Star on Our Repo
### [Github Open-Source Repo](https://github.com/Litlyx/litlyx)
| litlyx |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.