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 |
|---|---|---|---|---|---|---|---|---|
1,913,984 | Free Unlimited File Converter | https://convertio.shade.cool/ | 0 | 2024-07-06T17:40:49 | https://dev.to/banmyaccount/free-unlimited-file-converter-56gn | https://convertio.shade.cool/ | banmyaccount | |
1,913,190 | Version Control with Git and GitHub: The Importance and Effective Usage | In the world of software development, managing code changes efficiently is crucial. Version control... | 0 | 2024-07-06T17:37:31 | https://dev.to/hallowshaw/version-control-with-git-and-github-the-importance-and-effective-usage-2b2 | github, git, githubactions, versioncontrol | **In the world of software development, managing code changes efficiently is crucial. Version control systems (VCS) like Git and platforms like GitHub have become indispensable tools for developers. In this blog, we will explore the importance of version control and provide a comprehensive guide on how to use Git and GitHub effectively.**
### Why Version Control is Important
**1. <u>Collaboration**</u>
Team Coordination: Multiple developers can work on the same project simultaneously without conflicts.
Code Review: Team members can review each other’s code, suggest improvements, and ensure code quality.
Track Contributions: Easily track who made specific changes, which is crucial for accountability and understanding the codebase history.
**2. <u>Backup and Restore</u>**
Automatic Backups: Every change is stored in the repository, providing a comprehensive backup of the project.
Restore Points: Easily revert to previous versions of the codebase if something goes wrong.
**3. <u>Version History</u>**
Detailed History: View a detailed history of the entire project, including what changes were made, when, and by whom.
Branching and Merging: Experiment with new features or fixes in isolated branches without affecting the main codebase.
**4. <u>Efficient Workflow</u>**
Continuous Integration: Integrate changes into the main codebase frequently to detect errors early.
Continuous Deployment: Automate the deployment process to release updates quickly and efficiently.
## Getting Started with Git
**Installation**
- **Windows: Download and install Git from [git-scm.com](git-scm.com).**
- **Mac: Install via Homebrew (`brew install git`).**
- **Linux: Install using the package manager (`sudo apt-get install git` for Debian-based systems).**
**Configuration**
Set up your username and email:
```
git config --global user.name "Your Name"
git config --global user.email "your.email@example.com"
```
---
**Basic Git Commands**
- Initialize a Repository: Start a new repository or clone an existing one.
```
git init
git clone https://github.com/username/repository.git
```
- Check Status: View the current status of your working directory.
```
git status
```
- Add Changes: Stage changes for commit.
```
git add filename
git add .
```
- Commit Changes: Save changes to the local repository.
```
git commit -m "Your commit message"
```
- View Log: See the commit history.
```
git log
```
---
**Branching and Merging**
- Create a Branch
Branching allows you to create a separate line of development.
```
git branch new-feature
git checkout new-feature
```
- Merge a Branch
Merging integrates changes from one branch into another.
```
git checkout main
git merge new-feature
```
- Delete a Branch
Clean up branches that are no longer needed.
```
git branch -d new-feature
```
**Using GitHub**
- Repository Management
Create a Repository: On GitHub, click on “New” and fill out the repository details.
- Clone a Repository: Copy the repository URL and use git clone to clone it locally.
---
**Push and Pull**
- Push Changes: Upload local changes to the remote repository.
```
git push origin main
```
- Pull Changes: Fetch and merge changes from the remote repository.
```
git pull origin main
```
---
**Forking and Pull Requests**
- Fork a Repository: Create a personal copy of someone else's project.
- Create a Pull Request: Propose changes to the original project by submitting a pull request.
---
**Advanced Git Techniques**
- Rebasing
Rebase re-applies commits on top of another base tip.
```
git checkout feature-branch
git rebase main
```
- Stashing
Temporarily save changes that are not ready to be committed.
```
git stash
git stash apply
```
- Cherry-Picking
Apply specific commits from one branch to another.
```
git cherry-pick commit-hash
```
---
**Best Practices**
- Commit Often: Frequent commits with descriptive messages make it easier to track changes.
- Use Branches: Isolate new features and bug fixes in separate branches.
- Write Clear Commit Messages: Describe what changes were made and why.
- Regularly Pull Changes: Keep your local repository up to date with the remote repository.
- Code Reviews: Encourage team members to review each other’s code.
---
**Version control with Git and GitHub is a fundamental skill for any software developer. It enhances collaboration, maintains a detailed history of changes, and ensures efficient workflow management. By following the guidelines and best practices outlined in this blog, you can effectively manage your code and contribute to projects with confidence.**
| hallowshaw |
1,913,983 | Unlocking the Power of Generator Functions: Efficient Iteration, Asynchronous Flows, and Beyond | Generator Functions: A Deep Dive Generator functions are a powerful tool in JavaScript... | 0 | 2024-07-06T17:36:20 | https://dev.to/ajithr116/unlocking-the-power-of-generator-functions-efficient-iteration-asynchronous-flows-and-beyond-841 | react, javascript, html, css | ## Generator Functions: A Deep Dive
Generator functions are a powerful tool in JavaScript that allow you to create sequences of values on-demand. They differ from regular functions in how they execute and return values. Here's a comprehensive breakdown of their features, advantages, disadvantages, use cases, and code examples.
**Features:**
* **`function*` syntax:** Defined using `function*`, an asterisk (*) follows the `function` keyword to indicate it's a generator function.
* **`yield` keyword:** Pauses execution and returns a value. You can also `yield` expressions to return their results.
* **Generator object:** Calling a generator function doesn't execute the code. Instead, it returns a special object holding the function's state (including the pause point).
* **`next()` method:** This method on the generator object resumes execution from the last pause until another `yield` or the function finishes.
* **Iteration:** Generator functions are often used with iterators and `for...of` loops. These loops call `next()` repeatedly to get yielded values.
**Advantages:**
* **Memory efficiency:** When dealing with large datasets, generator functions only generate values when needed, avoiding memory overload.
* **Infinite iterators:** You can create infinite sequences for specific algorithms.
* **Improved asynchronous handling:** While generators are synchronous, they can be combined with asynchronous operations to create a more controlled approach to asynchronous programming.
* **Cleaner code:** Generator functions can simplify complex logic involving sequences by separating value generation from iteration.
**Disadvantages:**
* **Debugging complexity:** Debugging generator functions can be trickier than regular functions due to their stateful nature.
* **Not a direct replacement:** They are not always a direct replacement for regular functions, and understanding their use cases is crucial.
**Use Cases:**
* **Large data processing:** Generate values in chunks to avoid memory issues.
* **Iterating over complex data structures:** Create custom iterators for specific data structures.
* **Lazy loading:** Generate data on demand as it's needed, improving user experience.
* **Coroutines (advanced):** Implement cooperative multitasking for complex asynchronous logic (requires additional libraries).
**Code Example:**
Here's a JavaScript example demonstrating a generator function that yields a sequence of numbers:
```javascript
function* numberGenerator() {
let i = 0;
while (i < 5) {
yield i++;
}
}
const generator = numberGenerator();
console.log(generator.next().value); // Output: 0
console.log(generator.next().value); // Output: 1
console.log(generator.next().value); // Output: 2
// and so on...
```
**In Conclusion:**
Generator functions offer a powerful way to manage sequences and iterators in JavaScript. By understanding their features, advantages, and use cases, you can leverage them to write cleaner, more efficient, and memory-conscious code. If you're dealing with large datasets, complex data structures, or asynchronous programming, consider utilizing generator functions for a more controlled and optimized approach. | ajithr116 |
1,913,960 | HIRE A HACKER TO RECOVER LOST CRYPTO/BITCOIN - Hire iFORCE HACKER RECOVERY | When faced with the daunting task of recovering lost BTC and USDT, enlisting the services of a hacker... | 0 | 2024-07-06T17:21:49 | https://dev.to/mateo_sux_d4/hire-a-hacker-to-recover-lost-cryptobitcoin-hire-iforce-hacker-recovery-1nl | When faced with the daunting task of recovering lost BTC and USDT, enlisting the services of a hacker like iFORCE HACKER RECOVERY can offer a myriad of benefits. These hackers possess a deep understanding of blockchain technology and cryptocurrency security, allowing them to navigate the complex digital landscape with ease.
Their expertise enables them to employ sophisticated techniques to trace and retrieve lost funds efficiently, a task that may be challenging for the average individual. Moreover, hackers like iFORCE HACKER RECOVERY are known for their quick turnaround times in the recovery process, minimizing the financial impact of the loss. Clients can also rest assured that their transactions are conducted with the utmost confidentiality and anonymity, safeguarding their privacy throughout the recovery journey.
Their Website; iforcehackersrecovery.c o m
Mailbox: contact@iforcehackersrecovery . c om
Text or Call ; +1 240 ( 803, 37) 06
 | mateo_sux_d4 | |
1,862,129 | Vector Search pt. 3 - Retrieval Systems 🌌 | This is the third part of the Vector Search Series. We've talked about what is a Feature here, and... | 0 | 2024-07-06T17:16:15 | https://dev.to/sawaedo/vector-search-pt-3-retrieval-systems-3598 | machinelearning, vectordatabase | _This is the third part of the Vector Search Series. We've talked about what is a Feature [here](https://dev.to/sawaedo/vector-search-pt-1-features-22dm), and how to automatically obtain those Features using Vision Algorithms [here](https://dev.to/sawaedo/vector-search-pt-2-vision-algorithms-4ocn)._
If we try to remember, or retrieve something from our memory, we have to navigate the neural circuits in our brains in order to come up with the thing that we were trying to remember.
Our neurons activate in multiple established patterns that brings us a concept, if that concept is close to the thing that we want to remember we keep it, if not, we discard it and came up with another thing.
Here a particular thing that kind of align with this article is the difference on remembering things when we are focused or relaxed. When we are focused, we tend to narrow a lot the things in our remembering space, if we are relaxed, we have a broader remembering space, maybe take more time to remember something, but it is more probable to retrieve it at the end.
The thing is that there are some algorithms that use similar approaches to retrieve things that are close to the one that we are looking for.
Those algorithms are the **Vector Retrieval Algorithms**, they are at the heart of multiple search engines, ranking results based on similarity.
Here we'll try to explain them a bit.
## Search Indexes
Search Indexes could be treated as a sorting algorithm for Vectors, they sort based on the similarity with respect to the input Vector.
So this algorithm will receive an input Vector, then it will compute the similarity between it and others, and finally it will return the identifiers of most similar vectors, as simple as that.
An algorithm that will compute the similarity between the input vector and all the other ones in the Database is called a Brute Force algorithm, as it compute similarity to all vectors, then sort them.
There are other algorithms that make this process a bit (or a lot) more complex, those are very sophisticated algorithms which could be better approaches than brute-force (most of the time).
Great examples of those algorithms are [IVF](https://github.com/facebookresearch/faiss/wiki/Faiss-indexes#cell-probe-methods-indexivf-indexes) (Inverted File), and [HNSW](https://github.com/facebookresearch/faiss/wiki/Faiss-indexes#indexhnsw-variants) (Hierarchical Navigable Small World)
To understand this better, I'll be using a similar metaphor to the one introduced in the [HuggingFace Computer Vision Course](https://huggingface.co/learn/computer-vision-course/unit1/feature-extraction/feature-matching).
### IVF based algorithms
This kind of algorithm tries to breakdown the Vector Space in Cells, each cell will have a centroid, and that centroid is calculated using only the Vectors inside that cell.
So imagine that you have a lot of puzzle pieces in the floor, they could be of the same puzzle or they could be from different ones. The goal for you is to find a piece that you need (maybe for solving another puzzle), and you'll look up for it using this IVF based algorithm.
In contrast to brute Force where the puzzle pieces are sparse in the floor, and you go piece by piece checking wether it is useful to you or not, the IVF based algorithm organizes the pieces in groups based on the similarity between them, and compute a _centroid piece_ that you can use to check wether that group of pieces could be useful or not.
At search time, we check if a centroid piece or multiple centroid pieces are somewhat similar to what we are looking for, then after finding most similar centroid pieces, we start looking for the piece that we need inside its group, so instead of searching piece by piece, we'll be searching just in the groups where the centroid piece is most similar to the piece that we have in mind.
This method is very fast, and depending on the number of centroid pieces and comparisons performed at search time (we could check inside one or multiple groups), we could have high precisions when searching for pieces.
Remember that the similarity between pieces is calculated using the features previously extracted, those features could be based on the form, image of the piece, color, size, etc... And they are all saved in a vector form (embedding).
### HNSW based algorithms
These algorithms are very precise when retrieving the similar pieces. They organize the pieces in a graph-like form making them faster than brute force, and almost as precise when searching.
The below explanation will combine the puzzle metaphor with [this detailed article on HNSW algorihms](https://towardsdatascience.com/similarity-search-part-4-hierarchical-navigable-small-world-hnsw-2aad4fe87d37)
The HNSW algorithm would be like having multiple levels of the puzzle pieces. Originally you'll have all the pieces organized in a way that similar pieces are connected by strings little strings (I could not come out with a better methaphor 😅) so the pieces and the strings form something like a graph, but the magic of this algorithm comes from having _layers_ of strings.
Imagine that the string's layer could be defined by the diameter of the string (or its color), so there are pieces that have strings of multiple diameters.
When you are looking for a puzzle piece you could start anywhere in that pieces and strings mesh, but you'll start looking just at the pieces connected with the thicker strings, after finding the most similar piece connected to the thicker strings, you'll start to look for the next thiner group of string connected pieces, that were connected to that most similar piece with the tickest string, and you continue doing this process until you have looked up in all the string's thick levels, or you've find a good enough piece.
This process is more slow and requiers more memory than the IVF process, and it also consume more memory than the brute force algorithm, because this algorithm have to save all those strings (edges) that connect the pieces (vectors of features), but the results are more precise than the IVF algorithm, and faster than the brute force algorithm.
### Conclusion
Having the fundamentals of what is a feature, how to extract Image based features, and how can we lookup for things in a very efficient way, we can now understand how the retreival systems of Google, Netflix, Youtube, Pinterest, and our brains (not so much) work in general.
The full process would be something like:
1. Adding the Vectors to the database:
2. Extracting the Features of the thing to search:
3. Performing the search using a Vector Retrieval algorithm:
And that's it!☀️
All the articles have links and materials to keep deepeing our knowledge and as the HNSW algorithms explained here that way we'll have more puzzle pieces to retrieve knowledge from, and being better developers.
I hope you've learned something from this short and sparse series. And if you have suggestions or corrections, let me know.
Happy coding! 😎 | sawaedo |
1,913,358 | The Pragmatic Programmer Summary (WIP) | I've been reading the book The Pragmatic Programmer for a while and here's a summary of what I... | 0 | 2024-07-06T17:10:52 | https://dev.to/mengjia/the-pragmatic-programmer-summary-wip-3d3o | I've been reading the book _The Pragmatic Programmer_ for a while and here's a summary of what I learned from this book.
- Care about your craft
- There is no point in developing software unless you care about doing it well.
- Never run on auto-pilot
- Constantly be thinking, critiquing your work in real time
- You have agency
- Make time to study new stuff that look interesting.
- Instead of excuses, provide options
- Don't live with broken windows
- Neglect accelerates the rot faster than any other factor.
- Keep an eye on the big picture
- Constantly review what's happening around you, not just what you personally are doing.
- Great software today is often preferable to perfect software tomorrow
- Invest regularly in your knowledge portfolio
- Learn a new language
- Critically analyze what you read and hear
- It's both what you say and the way you say it
- The more effective you communicate, the more influential you become.
- Build good documentation in
- It's easy to produce good-looking documentation from the comments in source code, and we recommend adding comments to modules and exported functions to give other developers a leg up when they come to use it.
- Good design is easier to change than bad design
- Decoupling is good because by isolating concerns we make each easier to change.
- Single responsibility principle is useful because a change in requirements is mirrored by a change in just one module.
- Naming is important because good names make code easier to read, and hence make code easier to change.
- DRY -- Don't Repeat Yourself
- save you from having to rewrite logic
- prevent you from having to rewrite code when you have to make changes
- avoid human error as you will only be modifying one piece
- make code easier to read
- Make a point of reading other people's source code and documentation, either informally or during code reviews. What you're trying to do is foster an environment where it's easier to find and reuse existing stuff than to write it yourself.
| mengjia | |
1,913,957 | New? theme changing idea from a fancy map | I thought it would be cool to use a map to select themes. It needs some work to reduce its size. | 0 | 2024-07-06T17:04:58 | https://dev.to/sadra20012/new-theme-changing-idea-from-a-fancy-map-ac7 | design, webdev, frontend, react | I thought it would be cool to use a map to select themes. It needs some work to reduce its size.
| sadra20012 |
1,913,956 | State Management in Blazor WebAssembly | Managing state in Blazor WebAssembly (WASM) is essential for creating dynamic, interactive web... | 0 | 2024-07-06T17:00:29 | https://dev.to/saileshrijal/state-management-in-blazor-webassembly-20ke | Managing state in Blazor WebAssembly (WASM) is essential for creating dynamic, interactive web applications. This guide explores the fundamentals of Blazor WebAssembly state management, demonstrating the concepts with practical examples. By the end of this article, you will have a thorough understanding of how to implement Blazor state management effectively.
## What is State Management?
State management refers to the techniques used to handle the state of an application. In the context of Blazor WebAssembly, it involves managing the state of various components and ensuring they update correctly when the state changes. Effective state management is critical for creating responsive and user-friendly applications.
## Why is State Management Important in Blazor WebAssembly?
Blazor WebAssembly is a single-page application (SPA) framework that loads a single HTML page and dynamically updates it as the user interacts with the app. Proper Blazor WebAssembly state management ensures that changes in the application state are reflected accurately across all relevant components, enhancing the user experience.
[See More](https://saileshrijal.com.np/blog/state-management-in-blazor-webassembly/) | saileshrijal | |
1,913,955 | My first article! | I'm excited to write this article as an inaugural post on this platform. This is a perfect place to... | 0 | 2024-07-06T17:00:07 | https://dev.to/sxryadipta/my-first-article-401j | webdev, beginners, programming, opensource | I'm excited to write this article as an inaugural post on this platform. This is a perfect place to document my learnings and ideas as a beginner in the world of programming. I plan to explore a wide range of subjects here, from coding advice and technology trends to philosophical reflections and small life discoveries.
From the beginning, I wish to catalog my learnings and explorations so that I get to look back on my journey. Interested in talking not just about codes and bugs, but about hobbies and other topics that interest me.
I hope you find this piece of writing a little enjoyable, whether you are here to study, to contemplate, or just to relax and read.
Thank you!
| sxryadipta |
1,913,953 | Solving MySQL Authentication Problem | The Problem: Connecting a Java App to MySQL One of the most recent challenges I faced was connecting... | 0 | 2024-07-06T16:55:55 | https://dev.to/debuggingrabbit/solving-mysql-authentication-problem-2p9n | The Problem: Connecting a Java App to MySQL
One of the most recent challenges I faced was connecting a Java application to a MySQL database. The application was designed to interact with the database, but it kept failing to establish a connection. After some investigation, I discovered that the issue was related to the MySQL user authentication method.
The Solution: Updating the MySQL User Authentication Method
To resolve the connection issue, I followed these steps:
Open the MySQL prompt using the sudo command:
bash
sudo mysql -u root
Switch to the mysql database:
sql
```
USE mysql;
```
Update the user table to change the authentication method for the root user:
sql
```
UPDATE user SET plugin='mysql_native_password' WHERE User='root';
```
Flush the privileges to apply the changes:
sql
```
FLUSH PRIVILEGES;
```
Exit the MySQL prompt:
sql
```
exit;
```
Restart the MySQL service:
bash
```
sudo service mysql restart
```
After following these steps, the Java application was able to successfully connect to the MySQL database, and I could continue working on the project.
```
cd my-java-app
```
```
mvn clean install
```
Starting the JAR Application
Navigate to the target directory of your project:
```
cd target
```
Run the generated JAR file:
```
java -jar my-java-app-1.0-SNAPSHOT.jar
```
My Journey with HNG Internship
As I embark on my journey with the HNG Internship, I'm excited to tackle more complex backend challenges and learn from experienced mentors and peers. The internship provides a unique opportunity to gain practical experience, build a portfolio, and potentially secure a job in the tech industry.
The HNG Internship is a remote internship program that offers training and mentorship in various tech tracks, including backend development. By completing the internship, participants can earn certificates and potentially secure job opportunities with partner companies. To learn more about the HNG Internship, visit their website at https://hng.tech/internship.
I'm eager to apply the problem-solving skills I've developed to real-world projects during the internship. By the end of the program, I aim to become a proficient backend developer and be well-prepared for a career in the tech industry.
If you're interested in learning more about the HNG Internship and the opportunities it offers, visit https://hng.tech/hire or https://hng.tech/premium to explore the available tracks and resources.
| debuggingrabbit | |
1,913,951 | TITANIC DATA SET | Introduction The titanic dataset is mostly used for data analysis. It contains information about the... | 0 | 2024-07-06T16:54:00 | https://dev.to/dlstlady/titanic-data-set-5ah9 | Introduction
The titanic dataset is mostly used for data analysis. It contains information about the passengers in the titanic ship which include features of gender, age, passenger’s class and survival status. The perform data analysis on the titanic dataset using spreadsheet in the project.
Dataset
The Titanic dataset occurred on the sea as the titanic dataset and it consist of the following using table:
Variables
Definition
Key
Survival
survival
0 = No, 1 = yes
Pclass
Ticket class
1 = 1st, 2 = 2nd, 3 = 3rd
Sex
Passenger’s gender
Sibsp
number of siblings / spouses aboard the Titanic
Age
Passenger’s age
Parch
Number of parents / children aboard the Titanic
Ticket
Ticket number
Fare
Passenger fare
Cabin
Cabin number
Embark
Port of Embarkation
C = Cherbourg, Q = Queenstown S = Southamption
Variable Note
Pclass : A proxy for socio-economic status (SES)
1st = upper
2nd = middle
3rd = lower
Age: Age is a fractional if less than 1. If the age is estimated, is it the form of xx.5
Sibsp: The dataset defines family relationship in this way….
Siblings = brother, sister, stepbrother, stepsister
Spouse = husband, wife (mistresses, and fiancée were ignored)
Parch: The dataset defines family relations in this way..
Parent = mother, father
Child= daughter, son, stepdaughter, stepson
Some children traveled only with a nanny, therefore parch=0 for them.
Data visualization
Observation
Having gone through the glance insight many keys and variable where observe for the findings of the titanic dataset that leads to the summary of the data.
Conclusion
Base on this analysis we can summerise the key findings, insight for further investigation
You can register to enjoy this great privilege
<a href="https://hng.tech/internship">HNG intership</a>
<a href="https://hng.tech/hire">website</a> | dlstlady | |
1,913,950 | Hello World: The Universal First Step in Coding | Ah, the "Hello World" program. It's the coding equivalent of that awkward first date where you don't... | 0 | 2024-07-06T16:47:12 | https://dazvix.com/hello-world-the-universal-first-step-in-coding | webdev, beginners, programming | Ah, the "Hello World" program. It's the coding equivalent of that awkward first date where you don't quite know what to say, so you blurt out something simple just to break the ice. Think of it as the "Hi, I exist" of programming. Today, we're going to dive into the fascinating (and slightly absurd) world of "Hello World" across different programming languages.
## The C Version: Straight to the Point
```c
#include <stdio.h>
int main() {
printf("Hello, World!\n");
return 0;
}
```
C programmers like to keep things direct. It's like they say, "Here's a #include, a printf, and boom, I'm outta here." It's the equivalent of opening the door, yelling "Hello, World!" to your neighbor, and then slamming it shut before they can respond.
## The Python Version: All About Simplicity
```py
print("Hello, World!")
```
Python is like that friend who shows up in pajamas to a fancy party and still manages to look cool. One line, and it's done. If Python's "Hello, World!" were a movie, it would be a five-second TikTok clip that goes viral.
## The Java Version: Overly Formal
```java
public class HelloWorld {
public static void main(String[] args) {
System.out.println("Hello, World!");
}
}
```
Java is that guy who shows up to a casual barbecue in a full suit. "Public this, public that, here's my main method, let's be formal about it." It's the software equivalent of a handshake that lasts just a bit too long.
## The JavaScript Version: Full of Potential
```javascript
console.log("Hello, World!");
```
JavaScript is that friend who brings a trampoline to a picnic. Simple, fun, and you know things are about to get interesting. One console.log, and you’re ready to conquer the browser.
## The PHP Version: Mixing Things Up
```php
<?php
echo "Hello, World!";
?>
```
PHP is like your eccentric uncle who mixes ketchup with everything. It's embedded in HTML, can be mixed with various databases, and still manages to get the job done with a quirky smile.
## The Ruby Version: Sweet and Succinct
```ruby
puts "Hello, World!"
```
Ruby is like that person who bakes cookies for every occasion. Sweet, simple, and always makes you feel warm inside. With a puts, it softly whispers "Hello, World!" like a bedtime story.
## Why "Hello World"?
Why do we always start with "Hello World"? Because programming is a bit like a relationship: you start with small talk and work your way up to the deep stuff. Before you write a program to manage global stock markets, you first need to make sure you can get your code to, well, say hello.
So, whether you're in your pajamas or a full suit, whether you prefer trampolines or ketchup, "Hello, World!" is your universal first step into the wonderful world of coding. Embrace it, laugh at it, and remember: even the most advanced programmers started here.
Happy coding from [Dazvix Solution](https://dazvix.com/)! 🌍 | mrdanishsaleem |
1,913,947 | Mobile Development HNG | My Journey to Becoming a Mobile Developer with HNG Internship As an aspiring mobile developer, I'm... | 0 | 2024-07-06T16:44:01 | https://dev.to/debuggingrabbit/mobile-development-hng-3h4d | My Journey to Becoming a Mobile Developer with HNG Internship
As an aspiring mobile developer, I'm happy to start a career by joining the HNG Internship program. In this blog post, I'll share my excitement about learning Flutter, a popular mobile development platform, and explore the common software architecture patterns used in Flutter apps.
Flutter: The Future of Mobile Development
Flutter is a cross-platform framework that allows developers to create high-performance, visually attractive, and natively compiled applications for mobile, web, and desktop from a single codebase. With its growing popularity and strong community support, Flutter has become a go-to choice for many developers looking to build modern and responsive mobile apps quickly.
Software Architecture Patterns in Flutter
When it comes to building Flutter apps, developers often rely on various software architecture patterns to structure their code and ensure maintainability, testability, and scalability.
Here are a few common patterns used in Flutter development:
1. Bloc (Business Logic Component)
Pros: Separates business logic from the presentation layer, making the code more testable and easier to maintain.
Cons: Can lead to boilerplate code and requires a learning curve for developers unfamiliar with reactive programming.
2. Provider
Pros: Simple to implement and understand, with a straightforward API for state management.
Cons: May not scale well for complex applications with multiple levels of nested widgets.
3. Riverpod
Pros: Provides a more modular and testable approach to state management, with features like dependency injection and code generation.
Cons: Requires a shift in thinking for developers used to traditional state management approaches.
My Journey with HNG Internship
As I embark on my journey with the HNG Internship, I'm excited to dive deeper into Flutter development and learn from experienced mentors and peers. The internship provides a unique opportunity to gain practical experience, build a portfolio, and potentially secure a job in the tech industry.
The HNG Internship is a remote internship program that offers training and mentorship in various tech tracks, including mobile development. By completing the internship, participants can earn certificates and potentially secure job opportunities with partner companies. To learn more about the HNG Internship, visit their website at https://hng.tech/internship.
I'm eager to put my skills to the test and contribute to real-world projects during the internship. By the end of the program, I aim to become a proficient Flutter developer and be well-prepared for a career in mobile development.
If you're interested in learning more about the HNG Internship and the opportunities it offers, visit https://hng.tech/hire or https://hng.tech/premium
Join me on this exciting journey to becoming a skilled mobile developer through the HNG Internship program. | debuggingrabbit | |
1,913,946 | Submission for wix studio challenge | This is a submission for the Wix Studio Challenge . What I Built ... | 0 | 2024-07-06T16:42:25 | https://dev.to/ravixalgorithm/submission-for-wix-studio-challenge-3kp | devchallenge, wixstudiochallenge, webdev, javascript | *This is a submission for the [Wix Studio Challenge ](https://dev.to/challenges/wix).*
## What I Built
<!-- Created a Wildflower Clothing E-commerce Site -->
## Demo
<!-- https://ravixalgorithm.wixstudio.io/wildflower-clothing-->
<!-- Thanks for participating! → | ravixalgorithm |
1,913,945 | Python Lists Unpacked: Your Everyday Guide to Using Lists | Today, I intend to share one of Python’s most simple yet powerful tools: lists. Whether you’re just... | 0 | 2024-07-06T16:42:07 | https://dev.to/lcg_2021/python-lists-unpacked-your-everyday-guide-to-using-lists-493c | Today, I intend to share one of Python’s most simple yet powerful tools: lists.
Whether you’re just starting your coding journey or you've been coding in Python for a while, understanding lists and how to wield them can make your life a whole lot easier
**What Exactly Are Python Lists?**
Just as you are with your shopping list, think of yourself at a food market. You’ve got fruits, vegetables, snacks, and maybe some indulgent treats (of course, we all want something like this, don’t we?). In Python, a list is doing the same job. It's a collection of things, which are stored in one place, they are there and can - as a result - be added or removed. Here is an example of what it looks like:
```
my_shopping_list = ['apples', 'bananas', 'carrots', 'doughnuts']
```
Isn’t it simple? But don’t be deceived by their simplicity – lists can perform miracles.
**Making and Extracting Lists**
Everything is very easy where you’ve made a list. You should just take those things that should be on your list and include them in square brackets; the list is yours in a second. A list can be generated like this:
```
my_friends = ['Alice', 'Bob', 'Charlie']
```
Now, let’s say you want to know who is at the top of your friends’ list. To access any element within a list we use its index number. Mind that Python starts indexing from zero so that the first element would be indexed 0:
```
first_friend = my_friends[0] # This will be ‘Alice’
```
**Adding and Removing Elements**
Have a new pal? No worries. Use the append() method to add them at the end of the list:
```
my_friends.append('Diana')
```
Oh no, made an error? Do you have to eliminate someone from this list? It’s possible to remove any value from a list through remove():
```
my_friends.remove('Bob')
```
Alternatively, when you want to pop off an item at the end, simply use pop():
```
last_friend = my_friends.pop() # Removes and returns 'Diana' (if she was the last)
```
**Why Use Lists?**
Lists aren’t limited to merely saving a bunch of names or things. They are vital for Python data handling. Data iteration, object differentiation or mere programming organization can be facilitated using lists.
They also are what leads us to more complex data structures like arrays (in libraries like NumPy). These are necessary for data analysis and scientific computing.
**Conclusion**
In brief, there is flexibility in using python lists for programming in different ways as they’re simple and helpful tools. Beginning with managing little variable collections up to working on large datasets, mastering all that lists stand will help significantly on your coding journey.
| lcg_2021 | |
1,913,944 | 5 github profiles every developer must follow | Do you know github has more than 100 million developers, I found one of the amazing people from them,... | 0 | 2024-07-06T16:38:57 | https://dev.to/agunwachidiebelecalistus/5-github-profiles-every-developer-must-follow-1441 | webdev, beginners, devops, github | Do you know github has more than 100 million developers, I found one of the amazing people from them, who are building some amazing products in open source and you can also contribute to their projects or build cool projects like theirs.
that’s why I gathered a list of the top 5 profiles:
**1.** **Brad Traversy**
**Brad** is a web developer and educator with a knack for making complex topics accessible.
He runs Traversy Media, a YouTube channel https://www.youtube.com/@TraversyMedia where he shares in-depth tutorials on web development, covering technologies like JavaScript, React, Node.js, and more.
Brad’s clear teaching style and practical projects have helped countless developers level up their skills.
**2.** **Florin Pop**
**Florin** is a passionate web developer and content creator. He is known for his coding challenges and video lectures, where he shares his development process and problem-solving techniques.
Florin’s projects and tutorials cover a wide range of topics, including JavaScript, CSS, and front-end frameworks. He also maintains a popular blog and YouTube channel where he inspires and educates developers.
**Florin profile:**https://github.com/florinpop17
**3.** **Web Bos**
**Wes Bos** is a full-stack developer, teacher, and speaker from Hamilton, Ontario. He creates web development courses focused on JavaScript, TypeScript, React, CSS, and Node.js.
Wes co-hosts the popular Syntax.fm (https://syntax.fm/) podcast and has taught over half a million people JavaScript through the famous Javascript30 Challenge(https://javascript30.com/). He loves to teach, cook, and fix things around the house.
**Web Bos profile:**https://github.com/wesbos
**4.** **Hassan El Mghari**
Based in Philadelphia, **Hassan** works as a full-stack software engineer. he was the founder and CEO of UltraShock Gaming, a game marketing firm that amassed 500,000 Steam users until he sold it after four years of operation. he has a strong interest in developing intriguing side projects and startups in the developer tools industry.
Some of the amazing tools from **Hassan** are https://www.roomgpt.io/, https://www.pdftochat.com/ and https://www.restorephotos.io/
Hassan profile: https://github.com/Nutlope
**5.** **Steven Tey**
**Steven** is one of my favorite developers, he also helped build the best deployment technology “Vercel” and is currently the founder & CEO of Dub — an open-source link management system designed for modern marketing teams.
he also created cool projects like https://oneword.domains/, https://sharegpt.com/, https://novel.sh/ and https://extrapolate.app/
**Steven profile:** https://github.com/steven-tey
Thanks for reading!! | agunwachidiebelecalistus |
1,913,906 | Getting started as a Mobile App Developer | I've always been fascinated by how mobile apps work and are built. This curiosity grew as I developed... | 0 | 2024-07-06T16:36:50 | https://dev.to/mutiatbash/getting-started-as-a-mobile-app-developer-ji8 | mobile, reactnative, ios, developer | I've always been fascinated by how mobile apps work and are built. This curiosity grew as I developed my skills in frontend development. Eventually, after learning how to use React I decided to take a new step and learn about mobile development using React Native. Through this journey, I've explored various mobile development platforms and common software architecture patterns. In this article, I'll walk you through these platforms and patterns, along with their pros and cons. Let’s get started 🚀🚀
### Mobile Development Platforms
_**Native Development**_
**iOS (Swift/Objective-C)**
Swift or Objective-C is used for iOS development. This ensures high performance and responsiveness, with access to the latest iOS features and updates through Xcode. However, it's limited to iOS devices and requires knowledge of Swift or Objective-C, leading to higher development costs.
**Android (Kotlin/Java)**
Android development typically uses Kotlin or Java, providing wide device compatibility and extensive community support. While it allows access to the latest Android features, it faces fragmentation issues due to diverse devices and requires Kotlin/Java knowledge, making testing more complex.
_**Cross-Platform Development**_
**React Native**
React Native uses JavaScript and React to build apps for both iOS and Android. It enables code reuse between platforms, speeding up development with features like hot reloading. However, it may not match the performance of native apps and has limited access to platform-specific features, often relying on third-party libraries.
**Flutter**
Flutter was developed by Google and uses Dart for a single codebase that works on both iOS and Android. It offers high-performance rendering and a rich set of pre-designed widgets. However, learning Dart can be challenging, and apps tend to have a larger size with fewer third-party libraries compared to React Native.
**Xamarin**
Xamarin, supported by Microsoft, uses C# for building cross-platform apps, allowing shared code between iOS, Android, and Windows. It integrates well with Visual Studio but introduces performance overhead and larger app size, requiring knowledge of C# and the .NET ecosystem
**Software Architecture Patterns**
**MVC (Model-View-Controller)**
MVC divides an application into three components: Model, View, and Controller.
**Pros**:
- Easier to manage and test code.
- Organized and reusable code.
**Cons**:
- Can become complex for large apps.
- Tightly coupled components.
**MVP (Model-View-Presenter)**
MVP improves upon MVC by decoupling the UI and business logic.
**Pros**:
- Better separation of concerns.
- Easier unit testing.
**Cons**:
- More boilerplate code.
- Presenter can become bloated.
**MVVM (Model-View-ViewModel)**
MVVM provides a clear separation between UI and business logic, with the ViewModel as an intermediary.
**Pros**:
- Great separation of concerns.
- Two-way data binding.
- Easier to unit test.
**Cons**:
- Steeper learning curve.
- Potential performance issues.
**Clean Architecture**
Clean Architecture emphasizes modularity and decoupling.
**Pros**:
- Highly modular and decoupled.
- Promotes testability and maintainability.
**Cons**:
- Increased complexity.
- Requires more effort and understanding.
As a developer, choosing the right platform and architecture pattern is essential for building scalable applications. Native development offers optimal performance and access to platform-specific features, while cross-platform solutions like React Native and Flutter provide code reusability and faster development cycles.
In the next two months, I will be participating in the HNG internship under the mobile app development track. My aim is to enhance my skills as a mobile app developer. Reflecting on my experience as a finalist in the frontend development track during the last HNG internship, I realized how much those challenges contributed to my growth as a developer. The HNG internship provides an excellent opportunity to gain practical experience and further my knowledge, I look forward to becoming a better Mobile App Developer.
For anyone interested in learning more about the program you can visit their website [HNG Internship](https://hng.tech/internship). The program is free, but for those seeking a certificate and job opportunities, there is a premium option available - [HNG Premium](https://hng.tech/premium).
| mutiatbash |
1,913,673 | Guard Your Digital Fortress: Essential Privacy Best Practices Revealed | In an era where our digital lives are increasingly intertwined with our everyday activities, ensuring... | 0 | 2024-07-06T16:32:59 | https://dev.to/verifyvault/guard-your-digital-fortress-essential-privacy-best-practices-revealed-26o4 | opensource, privacy, security, cybersecurity | In an era where our digital lives are increasingly intertwined with our everyday activities, ensuring our privacy online has never been more critical. From financial transactions to personal conversations, our digital footprint can be vast and vulnerable. Here are some crucial best practices to keep your data safe:
**1. Strong, Unique Passwords:** Start with the basics. Use a mix of letters, numbers, and symbols, and avoid using the same password across multiple accounts.
**2. Enable Two-Factor Authentication (2FA):** Adding an extra layer of security significantly reduces the risk of unauthorized access. Tools like VerifyVault make this process seamless and secure.
**3. Update Regularly:** Keep your software, apps, and devices up to date. Updates often include security patches that shield you from the latest threats.
**4. Encrypt Your Data:** Whether it’s your emails, files, or messages, encryption scrambles your data so that only authorized parties can access it. VerifyVault offers robust encryption features to protect your sensitive information.
**5. Be Wary of Phishing:** Don’t click on suspicious links or download attachments from unknown sources. VerifyVault's commitment to transparency and open source development ensures that your 2FA codes are generated securely.
**6. Review App Permissions:** Regularly audit which apps have access to your data and revoke permissions from apps that don’t need them.
**7. Backup Your Data:** Always have a backup plan. Whether it’s using automatic backup features or manually backing up your most critical information, having a copy ensures you can recover from data loss scenarios.
### **<u>Take Action Today:</u>**
Start securing your accounts with VerifyVault, a free and open-source 2-Factor Authenticator designed for Windows and soon Linux users. Protect your online presence with its encrypted, offline-capable features and enjoy the peace of mind that comes with using a reliable 2FA solution. | verifyvault |
1,913,939 | AWS Security Hub | Hace unas semanas tuve la oportunidad de compartir en el canal de youtube de AWS Women Colombia una... | 0 | 2024-07-06T16:29:16 | https://dev.to/cyb3rcloud8888/aws-security-hub-3n19 | aws, cloudsecurity, compliance | Hace unas semanas tuve la oportunidad de compartir en el canal de youtube de AWS Women Colombia una charla acerca del servicio de seguridad en AWS llamado "Security Hub" este servicio nos ayuda para temas de postura de seguridad y cumplimiento de los recursos dentro de la infraestructura de AWS.
A traves de este portal compartire informacion acerca de los diferentes servicios de seguridad que existen dentro de Amazon Web Services.
**Introduccion**
Security hub proporciona una vista integral del estado de seguridad en tu entorno de AWS.
Agrega, organiza y prioriza hallazgos de multiples servicios de seguridad dentro de AWS.
Security Hub recopila datos de seguridad de todas las Cuentas de AWS, los Servicios de AWS y los productos compatibles de terceros y lo ayuda a analizar sus tendencias de seguridad y a identificar los problemas de seguridad de mayor prioridad
Beneficios de Security Hub
- Monitorizacion constante
- Cumplimiento Normativo
- Respuestas automatizadas
- Reduccion de riesgos.
![Security Hub] (https://dev-to-uploads.s3.amazonaws.com/uploads/articles/l645ljy1wotir9j2p7gm.png)
https://aws.amazon.com/es/security-hub/?nc=sn&loc=1
Estandares de Seguridad
Security Hub admite varios estándares de seguridad. Cada estándar incluye varios controles de seguridad, cada uno de los cuales representa una práctica de seguridad recomendada. Security Hub ejecuta comprobaciones de los controles de seguridad y genera resultados de control para ayudarle a evaluar su cumplimiento de las mejores prácticas de seguridad.
Estadares dentro de AWS Security Hub
- _Practicas recomendadas de seguridad v1.0.0_
Este estandar es creado por AWS, es un conjunto de comprobaciones de
seguridad automatizadas que detectan cuando las cuentas y los
recursos implementados de AWS.
- _Indicadores de referencia v1.2.0 - v1.4.0 - v3.0.0 CIS_
El Center for Internet Security (CIS) conjunto de guías de
configuración de seguridad y mejores prácticas desarrolladas por el
Center for Internet Security (CIS). Estas guías están diseñadas para
ayudar a organizaciones a asegurar sus sistemas de información y
protegerse contra ciberataques.
- _Publicacion especial de Nist 800-53_
El Este marco de cumplimiento lo ayuda a proteger la disponibilidad,
confidencialidad e integridad de sus sistemas de información y
recursos críticos.
- _PCI DSS v3.2.1_
El principal objetivo del PCI DSS es proteger la información
sensible de las tarjetas de pago contra el fraude y el robo mediante
la implementación de controles de seguridad robustos
Pasos para habilitar el servicio de Security Hub
Se debe habilitar AWS Config para que puede obtener Security Hub ingesta de informacion de AWS Config que revisara el cumplimiento de todos los recursos dentro de AWS.
Para habilitar AWS Config puedes hacer la configuracion de un solo click o desplegar usando IAC (Infraestructure as Code) con el servicio de AWS Cloud Formation.
Una vez habilitado AWS Config, podemos habilitar Security Hub con los estandares que se requieran segun el giro de negocio.
Finalmente luego de unas horas que comienze a trabajar el servicio de security hub podemos ver el porcentaje de cumplimiento en cada estandar asi como de cada uno de ellos.
Para efectuar las remediaciones ingresamos a cada hallazgo y podemos ver a detalle el control asi como los estandares asociados a estos controles con su respectivo numeral o identificador.
Asi tambien podemos deshabilitar controles de acuerdo a las siguientes motivos, para esto se deberia contar con el detalle del porque se deshabilita para en caso de alguna auditoria presentar este respaldo
Tambien se puede suprimir el control si de manera temporal no queremos que nos afecte el porcentaje o en caso que se este trabajando en la remediacion de dicho control
AWS Security Hub te ayudara a tener control acerca de problemas de configuraciones erroneas o de falta de seguridad en todos los recursos de AWS, te ayudara en casos de auditoria asi como el cumplimiento para certificaciones o de estandares de seguridad, este proceso es constante y deberas efectuar remediaciones en forme vaya creciendo tu infraestructura.
Comentame que te parecio o que agregarias a este post.
Cuentame que te parece o que podria añadir a este post.
| cyb3rcloud8888 |
1,913,938 | Descomplicando algoritmos | Olá, hoje eu vou contar um pouco para vocês sobre a teoria dos grafos, este é um de uma série de... | 0 | 2024-07-06T16:22:33 | https://dev.to/brunociccarino/descomplicando-algoritmos-51n9 | python, algorithms, learning, tutorial | Olá, hoje eu vou contar um pouco para vocês sobre a teoria dos grafos, este é um de uma série de posts que pretendo fazer sobre algoritmos, ensinando o que eu aprendi no meu ponto de vista. No final do post vou listar as minhas referencias, quero ressaltar que este não é um post que tem o intuito de ser um artigo acadêmico e não deve ser tratado como tal, estou escrevendo isso com o intuito de simplificar um conteúdo que é extenso e de certa forma complexo, e quero convidar vocês a procurar as minhas fontes, tenho certeza de que após a essa pequena introdução e procurar as minhas fontes, você vai perceber que algoritmos não são o bicho de 7 cabeças que dizem ser.
O que são algoritmos?
“Um algoritmo é literalmente um processo sistemático para a resolução de um problema.” Jayme Luiz Szwarcfiter
Acho que essa frase resume bem o que é um algoritmo, e aprender algoritmos e estruturas de dados, vão te auxiliar muito na hora de fazer uma entrevista técnica caso queira trabalhar na área. Até mesmo na vida no geral, melhora a tua capacidade de resolução de problemas, te faz pensar de uma forma diferente quando você vê um problema e tenta resolver esse problema.
Vamos começar com o que são grafos! Grafos são exatamente estruturas matemáticas que permitem codificar relacionamentos entre pares de objetos (Resumindo, são conjunto de vértices conectados por arestas). Dentro da teoria dos grafos temos grafos direcionados e grafos não direcionados, a diferença de um para o outro são as rotas das arestas, nos grafos não direcionados tanto faz a direção das arestas, no exemplo abaixo podemos nos locomover tanto do dois para o três quanto do três para o dois, o que não se aplicaria se o grafo fosse direcionado. E para um grafo ficar bem definido temos que ter dois conjuntos: O conjunto V dos vértices e o conjunto A das arestas. Para ficar mais fácil de entender, vamos ilustrar com alguns exemplos.
Aqui na imagem, podemos ver claramente o conjunto A das arestas e o conjunto V que na imagem é representado com números. Mas onde usamos isto? Nós usamos grafos para quase tudo nessa vida, literalmente tudo na natureza da para representar com grafos, na tecnologia então, nem se fala… Um bom exemplo é o algoritmo de recomendação do Twitter deixei essa imagem abaixo que foi tirada do video do Fabio Akita sobre o algoritmo do Twitter.
Nesse grafo do Twitter os vértices são as pessoas e as arestas são os relacionamentos (Quem seguimos, damos like, reetwitamos até mesmo quem bloqueamos). Provavelmente vocês devem estar pensando que isso é coisa de outro mundo, vou deixar outro exemplo para vocês… As rotas dos transportes públicos, cada estação é um vértice, e as arestas estão onde são as linhas.
O Dna Humano, pode ser representado por um grafo, suas bases hidrogenadas são seus vértices (adenina (A), guanina (G), citosina © e timina (T).)
Até mesmo as sinapses cerebrais do ser humano pode ser representado por um grafo. As sinapses cerebrais são junções entre a terminação de um neurônio e a membrana de outro neurônio. São elas que fazem a conexão entre células vizinhas, dando continuidade à propagação do impulso nervoso por toda a rede neuronal.
Agora eu vou deixar um exemplo de um grafo não direcionado que eu fiz em Python (escolhi Python por ser uma linguagem simples de entender e de ilustrar este exemplo):
```
import networkx as nx
"""Aqui vou criar uma função que cria um grafo não direcionado, vou adicionar os vértices (ou nós) e vou adicionar as arestas (conexões entre os vertices)"""
def grafoN():
G = nx.Graph()
G.add_nodes_from([1, 2, 3, 4, 5])
G.add_edges_from([(1, 2), (1, 3), (2, 4), (3, 4), (4, 5), (5, 1)])
return G
G = grafoN()
print("Número de nós:", G.number_of_nodes())
print("Número de arestas:", G.number_of_edges())
print("Nós:", list(G.nodes()))
print("Arestas:", list(G.edges()))
```
O output esperado é:
```
Número de nós: 5
Número de arestas: 6
Nós: [1, 2, 3, 4, 5]
Arestas: [(1, 2), (1, 3), (1, 5), (2, 4), (3, 4), (4, 5)]
```
No exemplo utilizado, definimos um grafo não direcionado com cinco nós e seis arestas, utilizamos a biblioteca NetworkX para acessar informações como o número de nós e arestas, bem como listar os nós e arestas presentes no grafo. Para ilustrar de forma mais clara desenhei este exemplo de como ficaria esse grafo!
Nesse grafo em especifico os nós (ou vértices) são ilustrados com números para facilitar a sua compreensão. Esses são grafos não direcionados, agora vou falar sobre os grafos direcionados
Os grafos direcionados são utilizados em diversas aplicações práticas, como modelagem de fluxos de informações, redes de transporte, sistemas de navegação, entre outros. A capacidade de representar e analisar relações direcionadas entre elementos torna os grafos direcionados uma ferramenta poderosa para entender a dinâmica de sistemas complexos e orientados por fluxos. Nos grafos direcionados cada aresta possui uma seta indicando a direção do fluxo entre os vértices. Isso reflete a natureza direcional das relações representadas no grafo. Os vértices são dispostos no plano de acordo com as coordenadas e configurações definidas na representação gráfica. A estilização, incluindo cores, tamanhos e fontes, contribui para uma visualização clara da estrutura de rede direcionada. Aqui vou deixar mais um exemplo de um grafo só que dessa vez direcionado:
```
import networkx as nx
def grafoD():
G = nx.DiGraph()
G.add_nodes_from([1, 2, 3, 4, 5])
G.add_edges_from([(1, 2), (1, 3), (2, 4), (3, 4), (4, 5), (5, 1)])
return G
G = grafoD()
print("Número de nós:", G.number_of_nodes())
print("Número de arestas:", G.number_of_edges())
print("Nós:", list(G.nodes()))
print("Arestas:", list(G.edges()))
```
Output esperado:
```
Número de nós: 5
Número de arestas: 6
Nós: [1, 2, 3, 4, 5]
Arestas: [(1, 2), (1, 3), (2, 4), (3, 4), (4, 5), (5, 1)]
```
Vou deixar um exemplo ilustrativo de como é um grafo direcionado abaixo:
Perceba que no grafo direcionado no exemplo acima nós podemos ir do quatro pro cinco, mas não podemos ir diretamente do cinco para o quatro, isso ocorre porquê nós não temos arestas indo do cinco pro quatro, só temos arestas indo do quatro pro cinco. Rotas estabelecidas (1 -> 2), (1 -> 3), (2 -> 4), (3 -> 4), (4 -> 5), (5 -> 1).
Referências:
Fabio Akita falando sobre o algoritmo do twitter: https://youtu.be/uIflMYQnp8A?si=3IXMSGUUOfrcTPwS
Link do pdf do livro entendendo algoritmos:
https://github.com/KAYOKG/BibliotecaDev/blob/main/LivrosDev/Entendendo%20Algoritmos%20-%20Um%20Guia%20Ilustrado%20Para%20Programadores%20e%20Outros%20Curiosos%20-%20Autor%20(Aditya%20Y.%20Bhargava).pdf
Playlist de uma introdução à teoria dos grafos:
https://www.youtube.com/playlist?list=PLrVGp617x0hAm90-7zQzbRsSOnN2Vbr-I
Link do meu github:
https://github.com/BrunoCiccarino | brunociccarino |
1,913,911 | How We Leveraged Tech to Revolutionize Household Cleaning | Introduction: Hey Dev.to community! I'm the director of Cleanmart, an innovative company focused on... | 0 | 2024-07-06T16:17:12 | https://dev.to/cleanmart/how-we-leveraged-tech-to-revolutionize-household-cleaning-419p | beginners, productivity, news, career | **Introduction:**
Hey Dev.to community! I'm the director of [Cleanmart](https://cleanmart.kz), an innovative company focused on providing eco-friendly and highly effective cleaning products. Today, I want to share how we used technology to transform our business and create a better cleaning experience for our customers.
**The Challenge:**
When we started Cleanmart, our goal was to offer top-quality cleaning products that were both effective and environmentally friendly. However, we faced several challenges:
- Ensuring product safety and efficacy
- Educating customers on proper usage
- Managing inventory and logistics efficiently
- Providing excellent customer service
**Leveraging Technology:**
To overcome these challenges, we incorporated various tech solutions into our operations. Here's how:
1. **Product Development:**
- **Data-Driven Research:** We used data analytics to understand customer needs and preferences. By analyzing feedback and market trends, we developed products that met the highest standards of effectiveness and safety.
- **Eco-Friendly Formulations:** Our R&D team utilized advanced chemical modeling software to create eco-friendly formulations that are both powerful and safe for the environment.
2. **Customer Education:**
- **Interactive Website:** Our website [Cleanmart](https://cleanmart.kz) features detailed product descriptions, usage instructions, and educational content. We implemented a content management system (CMS) that allows us to easily update and add new information.
- **Video Tutorials:** We created a series of video tutorials demonstrating the best practices for using our products. These videos are hosted on our YouTube channel and embedded on our website for easy access.
3. **Inventory Management:**
- **Automated Inventory System:** We implemented an automated inventory management system that tracks stock levels in real-time. This system integrates with our e-commerce platform, ensuring that we never run out of popular products and can manage supply chain efficiently.
- **AI-Driven Forecasting:** Using machine learning algorithms, we forecast demand and adjust our inventory accordingly. This minimizes waste and ensures that we always have the right amount of stock.
4. **Customer Service:**
- **Chatbots:** Our website features AI-powered chatbots that provide instant customer support. These chatbots can answer common questions, guide customers through the purchasing process, and even troubleshoot basic issues.
- **CRM Integration:** We integrated a customer relationship management (CRM) system to track customer interactions and feedback. This helps us provide personalized service and quickly address any concerns.
**The Results:**
Since implementing these tech solutions, we've seen significant improvements:
- **Increased Customer Satisfaction:** Our customers appreciate the quality of our products and the wealth of information available to them.
- **Efficient Operations:** Automated systems have streamlined our inventory management and logistics, reducing costs and improving efficiency.
- **Sustainable Growth:** By leveraging technology, we've been able to scale our business while maintaining our commitment to quality and sustainability.
**Conclusion:**
Technology has played a crucial role in the success of [Cleanmart](https://cleanmart.kz). By integrating advanced tech solutions into our operations, we've been able to provide top-notch products and services to our customers while ensuring sustainable growth.
If you're interested in learning more about how we use technology or have any questions, feel free to reach out or visit our website [Cleanmart](https://cleanmart.kz). Let's keep the conversation going! | cleanmart |
1,913,910 | Symfony Station Communiqué — 5 July 2024: A look at Symfony, Drupal, PHP, Cybersec, and Fediverse News! | This communiqué originally appeared on Symfony Station. Welcome to this week's Symfony Station... | 0 | 2024-07-06T16:13:54 | https://symfonystation.mobileatom.net/Symfony-Station-Communique-05-July-2024 | symfony, drupal, php, fediverse | This communiqué [originally appeared on Symfony Station](https://symfonystation.mobileatom.net/Symfony-Station-Communique-05-July-2024).
Welcome to this week's Symfony Station communiqué. It's your review of the essential news in the Symfony and PHP development communities focusing on protecting democracy. That necessitates an opinionated Butlerian jihad against big tech as well as evangelizing for open-source and the Fediverse. We also cover the cybersecurity world. You can't be free without safety and privacy.
There's good content in all of our categories, so please take your time and enjoy the items most relevant and valuable to you. This is why we publish on Fridays. So you can savor it over your weekend.
Or jump straight to your favorite section via our website.
- [Symfony Universe](https://symfonystation.mobileatom.net/Symfony-Station-Communique-05-July-2024#symfony)
- [PHP](https://symfonystation.mobileatom.net/Symfony-Station-Communique-05-July-2024#php)
- [More Programming](https://symfonystation.mobileatom.net/Symfony-Station-Communique-05-July-2024#more)
- [Fighting for Democracy](https://symfonystation.mobileatom.net/Symfony-Station-Communique-05-July-2024#other)
- [Cybersecurity](https://symfonystation.mobileatom.net/Symfony-Station-Communique-05-July-2024#cybersecurity)
- [Fediverse](https://symfonystation.mobileatom.net/Symfony-Station-Communique-05-July-2024#fediverse)
Once again, thanks go out to Javier Eguiluz and Symfony for sharing [our communiqué](https://symfonystation.mobileatom.net/Symfony-Station-Communique-28-June-2024) and [a recent article](https://grav.mobileatom.net/blog/ux-symfonys-icons) in their [Week of Symfony](https://symfony.com/blog/a-week-of-symfony-913-24-30-june-2024).
**My opinions will be in bold. And will often involve cursing. Because humans. Especially tech bros.**
---
<br/>
## Symfony
As always, we will start with the official news from Symfony.
Highlight -> "This week, Symfony 5.4.41, 6.4.9, 7.0.9, and 7.1.2 maintenance versions were released. Meanwhile, the development activity was very intense, fixing bugs in maintained branches and adding new features to the upcoming Symfony 7.2 version, such as the WhenNot and AsMessage attributes."
[A Week of Symfony #913 (24-30 June 2024)](https://symfony.com/blog/a-week-of-symfony-913-24-30-june-2024)
<br/>
They also have:
[Get ready for the fourth edition of the API Platform Conference!](https://symfony.com/blog/get-ready-for-the-fourth-edition-of-the-api-platform-conference)
<br/>
Blackfire says:
[Black Friday is coming: embrace performance-driven growth with Blackfire](https://blog.blackfire.io/black-friday-is-coming-embrace-performance-driven-growth-with-blackfire.html)
<br/>
SensioLabs has:
[This Summer, Stand on top of the Symfony Podium](https://blog.sensiolabs.com/2024/06/28/podium-symfony-sensiolabs-summer/)
[Doctrine Criterias and Lazy Collections magic](https://medium.com/the-sensiolabs-tech-blog/doctrine-criterias-and-lazy-collections-magic-ae57cd275afb)
<br/>
SymfonyCasts has:
[This week on SymfonyCasts](https://5hy9x.r.ag.d.sendibm3.com/mk/mr/sh/1t6AVsd2XFnIGKAdc2c4TLVnzSQuLj/76ByXQKuLdeW)
---
## Featured Item
Jared White has a new newsletter that looks promising:
Personally I feel like I've been on a rollercoaster ride these past few years where I keep being told something is **The Future of Technology™** when in fact it turns out to be a steaming pile. Do I really need to renumerate through all the many examples?
I think we really just need a **total reset** on how we approach conversations around the development of Internet and personal lifestyle technology. “Hype cycles” aren't cutting the mustard anymore. People simply don't trust Big Tech.
### [Hype Cycles, Come Again No More](https://buttondown.email/theinternet/archive/hype-cycles-come-again-no-more/)
---
<br/>
### This Week
Accesto explores:
[Mastering the Symfony Upgrade: A Step-by-Step Guide](https://accesto.com/blog/mastering-the-symfony-upgrade/)
Nacho Colomina Torregrosa examines:
[Creating your own security attribute with Symfony](https://dev.to/icolomina/creating-your-own-security-attribute-with-symfony-10m2)
[Creating a React component using Symfony UX](https://dev.to/icolomina/creating-a-react-component-using-symfony-ux-1bk9)
Rahul Chavan looks at:
[Implementing SoftDelete in Symfony with Doctrine](https://medium.com/@rcsofttech85/implementing-soft-delete-in-symfony-with-doctrine-d3dddf3a38af)
Signalize shows us:
[How to Install Signalize in Symfony](https://signalizejs.com/docs/installation/symfony)
Ak1r0 has a:
[Symfony, Vue, React, Svelte Docker Installer and Runtime](https://sveltethemes.dev/Ak1r0/symfony-vue-react-svelte-docker)
Winkel Wagen explores:
[Symfony, AWS Lambda, APIGateway and custom domains with paths](https://winkelwagen.de/2024/07/04/symfony-aws-lambda-apigateway-and-custom-domains-with-paths/)
Chris Shennan shows us how to:
[Decorate the Symfony router to add a trailing slash to all URLs](https://dev.to/chrisshennan/decorate-the-symfony-router-to-add-a-trailing-slash-to-all-urls-40jd)
And we examine:
[Symfony's Lyceum? A look at SensioLabs University](https://symfonystation.mobileatom.net/SensioLabs-University)
<br/>
### Platforms
Tighten says:
[Use HTMX to Create Laravel Single-Page Apps Without Writing JavaScript](https://tighten.com/insights/use-htmx-to-create-laravel-single-page-apps-without-writing-javascript/)
**I am wishy-washy (unusual I know) on HTMX.**
<br/>
### eCommerce
Dragan Rapić looks at:
[Test-driven development in Shopware 6](https://levelup.gitconnected.com/test-driven-development-in-shopware-6-c122d7e5444c)
<br/>
### CMSs
Concrete CMS has:
[How AI and ConcreteCMS Turbocharge Development Beyond WordPress Limits](https://www.concretecms.com/about/blog/devops/how-ai-and-concretecms-turbocharge-development-beyond-wordpress-limits)
<br/>
TYPO3 has:
[TYPO3 v13.2—Ready. Set. Ride.](https://typo3.org/article/typo3-v132-ready-set-ride)
[Coders' Corner: June 2024](https://typo3.com/blog/coders-corner-june-2024)
[Collaborative Efforts in French Open CMS Communities](https://typo3.org/article/collaborative-efforts-in-french-open-cms-communities)
[Content Blocks on the Road Towards TYPO3 v13 — Report Q1/2024](https://typo3.org/article/content-blocks-on-the-road-towards-typo3-v13-report-q1-2024)
[TYPO3 meets Elasticsearch: Boost Performance and Accuracy of your Search Function for a First-Class User Experience](https://typo3.com/blog/elasticsearch-boost-performance)
<br/>
Drupal has:
[Introducing Ripple Makers: our revamped Individual Membership program!](https://www.drupal.org/association/blog/introducing-ripple-makers-our-revamped-individual-membership-program)
**I'm not sure this was necessary. And Drupal still sucks at naming things.**
And Kanopi has:
[The Comprehensive Guide to Drupal Recipes](https://kanopi.com/blog/the-comprehensive-guide-to-drupal-recipes/)
ImageX has a solid review:
[The Gems of Drupal 10.3: Exploring What’s New in the Release](https://imagexmedia.com/blog/drupal-10-3-released-what-new)
Gábor Hojtsy proposes:
[Continuous forward compatibility checking of extensions for Drupal 12, 13, etc](https://www.hojtsy.hu/blog/2024-jul-05/continuous-forward-compatibility-checking-extensions-drupal-12-13-etc)
**Great idea.**
Wim Leers shares:
[Experience Builder, XB week 6: diagrams & meta issues](http://wimleers.com/xb-week-6)
As it relates to Drupal, the IEEE (whatever the fuck that stands for) explores:
[Improving Velocity of Code Contributions in Open Source](https://ieeexplore.ieee.org/document/10547075)
Matt Glaman examines:
[Running Drupal on the Edge with WebAssembly](https://mglaman.dev/blog/running-drupal-edge-webassembly)
**Awesome. For real.**
Consensus shares:
[Drupal 10 on Aegir 3: A Step-by-Step Guide](https://consensus.enterprises/blog/drupal-10-on-aegir-3-a-step-by-step-guide/)
The Drop Times has:
[CMS Usage Patterns in USA Charity and Non-Profit Organizations: FOSS Takes the Lead](https://www.thedroptimes.com/40967/cms-usage-patterns-in-usa-charity-and-non-profit-organizations-foss-takes-lead)
[Transforming Drupal Site Building: Lauri Timmanee on Experience Builder and Starshot Initiative](https://www.thedroptimes.com/interview/41268/transforming-drupal-site-building-lauri-timmanee-experience-builder-and-starshot-initiative)
Mario Hernandez looks at:
[Components variations in Storybook](https://mariohernandez.io/blog/components-variations-in-storybook/)
Morpht asks:
[To PDF or not to PDF? Government sites in Australia](https://www.morpht.com/blog/pdf-or-not-pdf-government-sites-australia)
Robert Roose has:
[How to create the perfect RSS feed in Drupal 10](https://roose.digital/en/blog/drupal/how-create-perfect-rss-feed-drupal-10)
[Tips for creating calculators in Drupal using Webforms and the Computed Twig element](https://roose.digital/en/blog/drupal/tips-creating-calculators-drupal-using-webforms-and-computed-twig-element)
Golems explores:
[Leveraging AI and Machine Learning in Drupal](https://gole.ms/blog/leveraging-ai-and-machine-learning-drupal)
**Again, mostly no.**
Mark has:
[A bash script to install different Drupal profiles the easy way](https://mark.ie/blog/a-bash-script-to-install-different-drupal-profiles-the-easy-way/)
<br/>
### Previous Weeks
Demianchuk Sergii examines:
[Database encryption at PHP Symfony Web App](https://medium.com/@demianchuk.sergii/database-encryption-at-php-symfony-web-app-51bc3fe7be1f)
OnlyOffice announces:
[ONLYOFFICE DocSpace plugin v1.1.0 for Drupal: embedding several rooms and files to Drupal pages, DocSpace widget settings and more](https://www.onlyoffice.com/blog/2024/06/onlyoffice-docspace-plugin-v1-1-0-for-drupal)
Acquia shares:
[Drupal 10.3: What You Need to Know](https://www.acquia.com/blog/drupal-10)
FreelyGive published a:
[Press Release: A New AI Initiative in Drupal](https://freelygive.io/blog/new-ai-initiative-drupal)
**Still mostly no.**
---
<br/>
## PHP
<br/>
### This Week
JetBrains published:
[PHP Annotated – June 2024](https://blog.jetbrains.com/phpstorm/2024/07/php-annotated-june-2024/)
Tayo O looks at:
[Implementing API Throttling in My PHP Project](https://dev.to/olutayo/implementing-api-throttling-in-my-php-project-35jm)
Tumusiime Ezra Jr. explores:
[Moonlight Architecture - The Old-New](https://dev.to/jet_ezra/moonlight-architecture-the-old-new-4ph5)
ServBay show us how to:
[Use XDebug for PHP Project Debugging](https://dev.to/servbay/use-xdebug-for-php-project-debugging-2i4o)
JetBrains announces:
[PhpStorm 2024.2 EAP Highlights](https://blog.jetbrains.com/phpstorm/2024/07/phpstorm-2024-2-eap-highlights/)
[php]architect has a late June issue:
[AI Llamas June 2024](https://www.phparch.com/magazine/2024/06/2024-06-ai-llamas/)
Alex Castellano shows us how to:
[Create an XLS Spreadsheet in 5 Minutes with PHP](https://alexwebdevelop.activehosted.com/social/1543843a4723ed2ab08e18053ae6dc5b.404)
Ash Allen Design has:
[A Guide to PHP Attributes](https://ashallendesign.co.uk/blog/php-attributes)
Serghei Pogor compares:
[UUID vs INT for Primary Keys Making the Right Choice](https://sergheipogor.medium.com/uuid-vs-int-for-primary-keys-making-the-right-choice-c4d2d4c284a0)
Backend Tea asks:
[What is PHP's declare(strict_types=1); and why you should use it](https://backendtea.com/post/php-declare-strict-types/)
Oracle examines:
[PHP and MySQL 9](https://blogs.oracle.com/mysql/post/php-and-mysql-9)
**Like peaches and creme.**
Markus Staab looks at:
[Array Shapes For Preg Match Matches](https://staabm.github.io/2024/07/05/array-shapes-for-preg-match-matches.html)
PHPStan explores:
[Debugging PHPStan Performance: Identify Slow Files](https://phpstan.org/blog/debugging-performance-identify-slow-files)
OmidReza Salari examines:
[Apache Kafka: A Comprehensive Guide with PHP Examples](https://medium.com/@Omid_dev/apache-kafka-a-comprehensive-guide-with-php-examples-4cf6a6491666)
Oahdev looks at:
[Tackling a Tough Backend Challenge: Integrating the AWS Seller Central API](https://medium.com/@oahdevtech/tackling-a-tough-backend-challenge-integrating-the-aws-seller-central-api-b8e702b0e1a6)
Raheel Khan shares a:
[JSON to HTML Converter: Simplify Your Data Representation with PHP](https://medium.com/@raheelarifkhans/json-to-html-converter-simplify-your-data-representation-with-php-3a87a43de8c1)
Smith Kruz demonstrates:
[Building a Basic API Server in PHP: A Journey from Concept to Implementation](https://smithkruz.medium.com/building-a-basic-api-server-in-php-a-journey-from-concept-to-implementation-8d250bb438a9)
<br/>
---
<br/>
## More Programming
TechCrunch reports:
[MIT robotics pioneer Rodney Brooks thinks people are vastly overestimating generative AI](https://techcrunch.com/2024/06/29/mit-robotics-pioneer-rodney-brooks-thinks-people-are-vastly-overestimating-generative-ai/)
[Vaire Computing raises $4.5M for ‘reversible computing’ moonshot which could drastically reduce energy needs](https://techcrunch.com/2024/07/01/vaire-computing-raises-4-5m-for-reversible-computing-moonshot-which-could-drastically-reduce-energy-needs/)
**Let’s hope this dog will hunt.**
Palantir promotes:
[Practical AI Hallucination Awareness](https://www.palantir.net/blog/practical-ai-hallucination-awareness)
IT Connect is:
[Analyser la sécurité d’une image Docker : les risques, les outils et les bonnes pratiques](https://www.it-connect.fr/analyser-securite-image-docker-conseils-outils-bonnes-pratiques/)
Cloudfare announces:
[Declare your AIndependence: block AI bots, scrapers and crawlers with a single click](https://blog.cloudflare.com/declaring-your-aindependence-block-ai-bots-scrapers-and-crawlers-with-a-single-click)
**Awesome.**
Grant Horwood examines:
[Amber: writing bash scripts in amber instead. pt. 4: functions](https://gbh.fruitbat.io/2024/07/03/amber-writing-bash-scripts-in-amber-instead-pt-4-functions/)
Lullabot looks at:
[Responsive HTML Tables: Presenting Data in an Accessible Way](https://www.lullabot.com/articles/responsive-html-tables-presenting-data-accessible-way)
Keith Grant takes a:
[A Structured Approach to Custom Properties](https://keithjgrant.com/posts/2024/06/a-structured-approach-to-custom-properties/)
The Logic Grimoire opines:
[Writing HTML by hand is easier than debugging your static site generator/](https://logicgrimoire.wordpress.com/2024/07/01/writing-html-by-hand-is-easier-than-debugging-your-static-site-generator/)
**And they're correct.**
Coding Beauty shares:
[New HTML < dialog > tag: An absolute game changer](https://medium.com/coding-beauty/html-dialog-tag-f3edf6d02413)
Chris Krycho asks:
[What if we actually _could_ replace Git? Jujutsu might give us a real shot.](https://v5.chriskrycho.com/essays/jj-init/)
**Interesting tool.**
<br/>
---
## Fighting for Democracy
[Please visit our Support Ukraine page](https://symfonystation.mobileatom.net/Support-Ukraine)to learn how you can help
kick Russia out of Ukraine (eventually, like ending apartheid in South Africa).
<br/>
### The cyber response to Russia’s War Crimes and other douchebaggery
The Kyiv Post reports:
[OPINION: NAFO Claims Another High-Profile Victim](https://www.kyivpost.com/opinion/34772)
[Hackers Strike the Russian and Belarusian Governments While Knocking Occupational Forces’ Services Offline](https://www.kyivpost.com/post/35210)
TechCrunch reports:
[Defense tech and ‘resilience’ get global funding sources: Here are some top funders](https://techcrunch.com/2024/06/30/defense-tech-and-resilience-get-global-funding-sources-here-are-some-top-funders/)
[Meta’s ‘pay or consent’ model fails EU competition rules, Commission finds](https://techcrunch.com/2024/07/01/metas-pay-or-consent-model-fails-eu-competition-rules-commission-finds/)
[Amazon faces more EU scrutiny over recommender algorithms and ads transparency](https://techcrunch.com/2024/07/05/amazon-faces-more-eu-scrutiny-over-recommender-algorithms-and-ads-transparency/)
Open Internet Governance has:
[An Open Letter to the United Nations](https://open-internet-governance.org/letter)
The Next Web reports:
[Why Nvidia could soon be with hit with antitrust charges in France](https://thenextweb.com/news/why-nvidia-could-be-hit-antitrust-charges-france)
<br/>
### The Evil Empire Strikes Back
So-called journalism outfit CNN reports:
[Deepfake video targeting Zelensky’s wife linked to Russian disinformation campaign, CNN analysis shows](https://www.cnn.com/2024/07/02/europe/deepfake-video-zelensky-wife-intl-latam)
The Guardian reports:
[Revealed: the tech entrepreneur behind a pro-Israel hate network](https://www.theguardian.com/world/article/2024/jun/29/daniel-linden-shirion-collective-pro-israel-palestine-hate)
**Of course the motherfucker is from Florida.**
NPR reports on:
[How is Israel Using Facial Recognition in Gaza?](https://www.npr.org/2024/06/19/1196982257/how-is-israel-using-facial-recognition-in-gaza)
**Oppression tech coming to a town near you.**
The Register reports:
[Baddies hijack Korean ERP vendor's update systems to spew malware](https://www.theregister.com/2024/07/02/korean_erp_backdoor_malware_attack/)
[Devs claim Apple is banning VPNs in Russia 'more effectively' than Putin](https://www.theregister.com/2024/07/05/kremlin_internet_censor_vpn/)
DarkReading reports:
[Patch Now: Cisco Zero-Day Under Fire From Chinese APT](https://www.darkreading.com/vulnerabilities-threats/patch-now-cisco-zero-day-chinese-apt)
Euronews reports:
[Far-right, including France’s National Rally, use AI to support political messaging, reports say](https://www.euronews.com/next/2024/07/04/far-right-including-frances-national-rally-use-ai-to-support-political-messaging-reports-c)
404 Media reports:
[Google Says AI Could Break Reality](https://www.404media.co/email/57481891-b3a6-4420-86e2-5c5c85c56258/?ref=daily-stories-newsletter)
<br/>
### Cybersecurity/Privacy
And:
[TeamViewer Credits Network Segmentation for Rebuffing APT29 Attack](https://www.darkreading.com/cyberattacks-data-breaches/teamviewer-network-segmentation-apt29-attack)
[Apple CocoaPods Bugs Expose Millions of Apps to Code Injection](https://www.darkreading.com/cloud-security/apple-cocoapods-bugs-expose-apps-code-injection)
The Register reports:
[Nasty regreSSHion bug in OpenSSH puts around 700K Linux boxes at risk](https://www.theregister.com/2024/07/01/regresshion_openssh/)
TechCrunch has:
[Twilio says hackers identified cell phone numbers of two-factor app Authy users](https://techcrunch.com/2024/07/03/twilio-says-hackers-identified-cell-phone-numbers-of-two-factor-app-authy-users/)
[In a major update, Proton adds privacy-safe document collaboration to Drive, its freemium E2EE cloud storage service](https://techcrunch.com/2024/07/03/in-major-update-proton-adds-privacy-safe-document-collaboration-to-drive-its-freemium-e2ee-cloud-storage-service/)
**Super cool.**
[Cloudflare launches a tool to combat AI bots](https://techcrunch.com/2024/07/03/cloudflare-launches-a-tool-to-combat-ai-bots/)
**Also cool.**
<br/>
---
### Fediverse
The Fediverse Report has:
[Last Week in Fediverse – ep 75](https://fediversereport.com/last-week-in-fediverse-ep-75/)
NodeBB is:
[Making the case for richer HTML in ActivityPub](https://community.nodebb.org/topic/18134/making-the-case-for-richer-html-in-activitypub)
Dmitri Zagidulin proposes:
[FEP-7952: Roadmap For Actor and Object Portability](https://codeberg.org/bumblefudge/fep/src/branch/fep-7952--roadmap-for-actor-and-object-portability/fep/7952/fep-7952.md#fep-7952-roadmap-for-actor-and-object-portability)
Mastodon is:
[Highlighting journalism on Mastodon](https://blog.joinmastodon.org/2024/07/highlighting-journalism-on-mastodon/)
Jeff Sikes explores:
[Updating a Mastodon Instance](https://box464.com/posts/updating-mastodon/)
Owncast has an update:
[Owncast Newsletter July 2024](https://owncast.ghost.io/owncast-newsletter-july-2024/)
As does PieFed:
[PieFed development update June 2024 - Bookmarks and Announcements](https://piefed.social/post/149522)
FOSS Academic comments:
[On Threads's Blocklist](https://fossacademic.tech/2024/06/28/ThreadsBlocking.html)
Forgejo has:
[Forgejo monthly update - June 2024](https://forgejo.org/2024-06-monthly-update/)
<br/>
### Other Federated Social Media
There is a Bridgy Fed update:
[Update](https://snarfed.org/2024-06-24_53250)
<br/>
---
## CTAs (aka show us some free love)
- That’s it for this week. Please share this communiqué.
- Also, please [join our newsletter list for The Payload](https://newsletter.mobileatom.net/). Joining gets you each week's communiqué in your inbox (a day early).
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Do you own or work for an organization that would be interested in our promotion opportunities? Or supporting our journalistic efforts? If so, please get in touch with us. We’re in our toddler stage, so it’s extra economical. 😉
More importantly, if you are a Ukrainian company with coding-related products, we can offer free promotion on [our Support Ukraine page](https://symfonystation.mobileatom.net/Support-Ukraine). Or, if you know of one, get in touch.
You can find a vast array of curated evergreen content on our [communiqués page](https://symfonystation.mobileatom.net/communiques).
## Author
### Reuben Walker
Founder
Symfony Station | reubenwalker64 |
1,913,909 | Why Vector Databases Matter in AI: Decrypting $350 Million in Funding | Have you heard about the recent developments in the tech world? Startups focusing on vector databases... | 0 | 2024-07-06T16:12:39 | https://dev.to/samadpls/why-vector-databases-matter-in-ai-decrypting-350-million-in-funding-18jg | vectordatabase, ai, startup, rag | Have you heard about the recent developments in the tech world? Startups focusing on vector databases have secured over **$350 million** in funding to improve generative AI infrastructure. This raises an interesting question: What makes these databases so important in the AI landscape? Let's delve into the technology behind vector databases and their critical role in advancing Generative AI.
### Why AI Needs Inside Information?🤷♂️
Foundation models are great at generating human-like content based on prompts, but they often struggle when it comes to specific business needs. To unleash their full potential, it's important to use relevant data from within the company. Businesses gather huge amounts of internal information, including documents, presentations, user manuals, and transaction summaries. This data, which isn't known to generic AI models, is crucial for creating tailored outputs for specific business purposes. By combining this data with prompts, we can significantly improve the accuracy and relevance of AI-generated content.
But how do we effectively provide this context to AI models🤔? This is where vector embeddings come into play.
### How Vector Embeddings Speak AI's Language
Vector embeddings are a sophisticated method of representing text, images, and audio numerically in a vector space. Basically, it helps machine learning models turn all sorts of data into a standardized format that's perfect for computer analysis
Vector Embedding Process:
In the context of enterprise datasets, especially textual documents, embeddings capture semantic similarities among words. This means that words with similar meanings are placed close together in the vector space, making it easier to retrieve and analyze them efficiently. These embeddings, along with metadata, are stored in specialized vector databases that are designed for quick data retrieval.
### Vector Databases: The Brain Behind the Brawn
Vector databases are specialized systems designed to store and retrieve these numerical representations efficiently. They can handle billions of data points and are built to quickly find similar items in large datasets. This capability is essential for tasks that require fast and precise search results, like in AI applications.
Key features of vector databases include:
1. **Similarity Search**: This involves using algorithms such as k-nearest neighbors (k-NN) and cosine similarity to quickly find data points that are most similar to a given query.
2. **Scalability**: This refers to the ability to efficiently handle large datasets, support complex queries, and work in real-time applications.
3. **Integration**: This means seamlessly working with existing database technologies like PostgreSQL to improve the storage and retrieval of vector data.
### What's Next? The Future of AI-Powered Businesses
Vector databases are playing an increasingly crucial role in emerging technologies like RAG (Retrieval-Augmented Generation), which we'll explore in upcoming articles. As we continue to witness their integration into various AI frameworks, the impact of vector databases on scalability, efficiency, and innovation in generative AI becomes increasingly evident.
In conclusion, the significant investments in vector database startups indicate a crucial shift towards using advanced data storage and retrieval solutions to enhance AI capabilities. As these technologies advance, they are expected to transform the landscape of AI applications, making them more powerful, relevant, and tailored to specific business needs.
I am Abdul Samad. You can connect with me on GitHub at [samadpls](https://github.com/samadpls). | samadpls |
1,913,903 | How to Deploy your NextJS App on a VPS | Deploying Your Next.js Application on a VPS Deployment — A crucial part of development... | 0 | 2024-07-06T16:11:07 | https://dev.to/faizan711/how-to-deploy-your-nextjs-app-on-a-vps-45kf | nextjs, webdev, vps, ssl | # Deploying Your Next.js Application on a VPS
Deployment — A crucial part of development that most crash courses and tutorials leave out of their curriculum. It is one of the underrated skills and a must-have to become an all-round developer. Today we are going to see how to deploy a Next.js application on a VPS (Virtual Private Server).
You must be thinking, why not just deploy it on Vercel? It is so simple and seamless. But let me tell you, while Vercel is a well-liked option, you might prefer to test on your own VPS or you might not feel comfortable with a managed hosting company, and the costs on Vercel increase exponentially very quickly.
This article will be a total guide on how to deploy your Next.js application, set up Nginx as a proxy server, connect your domain to the Next.js app, get an SSL certificate using Certbot, and run it using PM2. So let’s get started.
## Things to Have Beforehand
- Your own VPS
- A Next.js application
- Basic knowledge of SSH, Node.js, and basic Linux command-line usage
- Domain for your application (optional, you can check your app running directly on IP also)
## Set Up Your VPS
1. **Connect to VPS using SSH**: Replace `your-vps-ip` with the IP address of your VPS.
```
ssh root@your-vps-ip
```
2. **Install Necessary Software**
**Update and Upgrade**: Update the package list and upgrade installed packages to the latest versions.
```
sudo apt update
sudo apt upgrade -y
```
**Install Node.js and npm**: Install Node.js and npm on your VPS.
```
sudo apt install -y nodejs
```
**Install PM2**: PM2 is a process manager for Node.js applications. It keeps your app running and restarts it if it crashes.
```
sudo npm install -g pm2
```
## Deploy Your Next.js Application
Here are three ways to deploy your application:
1. **Transfer your application files to the VPS using SCP**: Use the command below from your local machine’s terminal. Replace the paths as needed.
```bash
scp -r /path/to/your/nextjs-app root@your-vps-ip:/path/to/destination
```
2. **Clone your application from a GitHub repository**: If it is a public repo, clone directly (not recommended). For a private repo, generate SSH keys in your VPS and then copy the public key and put it in the keys section of your GitHub account to allow the VPS to clone your private repo using SSH.
```bash
git clone <Your repository link>
```
3. **Create a new Next.js app on the VPS**:
```bash
cd /path/to/your/nextjs-app
npx create-next-app@latest myapp
```
Now that we have deployed our application, it’s time to set up a reverse proxy Nginx server and connect the domain to our application. Then at last, we will build our app and start it with PM2.
## Set Up a Reverse Proxy with Nginx
1. **Install Nginx**: Install Nginx, a web server that can act as a reverse proxy.
```bash
sudo apt install nginx -y
```
2. **Adjust our Firewall**: To allow Nginx and traffic on ports 80 and 443.
```bash
sudo ufw allow 'Nginx HTTP'
sudo ufw allow 'Nginx HTTPS'
sudo ufw enable
sudo ufw status
```
The status should show something like below:
```
Status: active
To Action From
-- ------ ----
OpenSSH ALLOW Anywhere
Nginx HTTP ALLOW Anywhere
OpenSSH (v6) ALLOW Anywhere (v6)
Nginx HTTP (v6) ALLOW Anywhere (v6)
```
3. **Check if Nginx has started**:
```bash
systemctl status nginx
```
Verify by going to the IP of your VPS `http://your_vps_ip_address` on a browser; it should show the default Nginx page.
4. **Create Nginx Config**: Create an Nginx configuration file to forward web traffic to your Next.js application.
```bash
sudo nano /etc/nginx/sites-available/nextjs-app.conf
```
Paste the below configuration and replace `your-domain.com` with your domain.
```nginx
server {
listen 80;
server_name your-domain.com;
location / {
proxy_pass http://localhost:3000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
}
```
Now delete the default config file:
```bash
sudo rm /etc/nginx/sites-enabled/default
```
Enable our configuration by creating a symbolic link and restarting Nginx:
```bash
sudo ln -s /etc/nginx/sites-available/nextjs-app.conf /etc/nginx/sites-enabled/
sudo systemctl restart nginx
```
## Secure Your Application with SSL
**Install Certbot with Snapd**:
*Install Snapd*:
```
sudo apt install snapd
```
*Ensure you have the latest Snapd version installed*:
```
sudo snap install core; sudo snap refresh core
```
*Install Certbot with Snapd*:
```
sudo snap install --classic certbot
```
*Create a symlink to ensure Certbot runs*:
```
sudo ln -s /snap/bin/certbot /usr/bin/certbot
```
**Obtain SSL Certificate with Certbot**:
```
sudo certbot --nginx -d your_domain_name.com -d www.your_domain_name.com
```
## Build Your Application and Start with PM2
Now that we have our app on the VPS, the domain connected with it, and SSL to secure it, it's finally time to build our Next.js app and get it running.
1. **Go to your app and run the build command**:
```bash
cd /path/to/your/nextjs-app
npm run build
```
2. **Start the application using PM2**:
```bash
sudo pm2 start npm --name "myapp" -- start
```
3. **Save the PM2 process and set up PM2 to start on boot**:
```bash
sudo pm2 save
sudo pm2 startup
```
4. **Now go to your domain, and you will see your Next.js app running**:
```
https://your-domain.com
```
## Conclusion
Deploying your Next.js application on a VPS might seem challenging at first, but by following these steps, you can set up your server, install the necessary software, transfer your application, and secure it with HTTPS. This process gives you more control over your application and can lead to better performance and cost savings. Happy deploying!
## Reference
- [Deploy NextJS App on VPS](https://medium.com/@zay_kyoy/deploy-nextjs-app-on-vps-20aedfbed3d1)
##Epilogue
Thank you for reading! If you have any feedback or notice any mistakes, please feel free to leave a comment below. I’m always looking to improve my writing and value any suggestions you may have. If you’re interested in working together or have any further questions, please don’t hesitate to reach out to me at [fa1319673@gmail.com](mailto:fa1319673@gmail.com).
| faizan711 |
1,913,908 | Revamping Test Reports: 6 Essential Steps for Improvement | The data-driven realm of software testing and quality assurance mandates the creation of clear,... | 0 | 2024-07-06T16:10:03 | https://www.vamonde.com/revamping-test-reports-6-essential-steps-for-improvement/ | testing, mobile, webdev, programming | The data-driven realm of software testing and quality assurance mandates the creation of clear, actionable, and insightful test reports. These reports provide a snapshot of product health and are fundamental in determining future development and testing strategies. In a competitive ecosystem where user experience optimization and seamless functionality are paramount, improving your test reports is not just a suggestion—it’s a necessity.
For testers, product managers, SREs, DevOps, and QA engineers, the ability to effectively communicate the state of a product through comprehensive test reports is essential. Let’s dive into the six most important steps to enhance your test reports and, consequently, your testing process.
Before delving into ways to enhance your test reports, it’s paramount to establish a foundational understanding. What are test reports, and why do they hold such weight in software development and quality assurance?
_Read: [Elevating Testing Efficiency with Cloud-Based Real Device Infrastructure](https://dev.to/abhayit2000/elevating-testing-efficiency-with-cloud-based-real-device-infrastructure-23dk)_
## What Are Test Reports?
Test reports are formal records that encapsulate the results of testing activities. These documents detail the scope of the testing, the methods employed, the outcomes of each test case, and potential issues or defects uncovered. Designed for clarity and precision, test reports provide an objective view of the software or product’s quality at a particular stage in its development lifecycle.
**Why Are They Important?**
- **Stakeholder Communication**: Test reporting serves as a bridge between the technical and non-technical stakeholders. They distill complex testing outcomes into actionable insights, allowing decision-makers to comprehend the product’s quality and the next steps.
- **Quality Assurance**: These reports provide a tangible measurement of the product’s reliability, performance, and usability. They highlight areas of concern, ensuring stakeholders are informed of potential risks or shortcomings.
- **Feedback Loop**: Test reports offer constructive feedback for developers and QA engineers. Highlighted issues can be addressed promptly, ensuring continuous improvement in subsequent development cycles.
- **Accountability and Transparency**: By documenting testing outcomes, these reports create a transparent environment where everyone involved understands the product’s current state. This fosters trust among teams and stakeholders.
- **Informed Decision-making**: With insights from test reports, product managers and stakeholders can make informed decisions on releases, feature prioritizations, and resource allocations.
Now, recognizing the critical role test reports play, enhancing their quality and clarity becomes even more pivotal. As we proceed to explore the steps to improve these reports, keep in mind their overarching objective: to provide clear, actionable, and comprehensive insights into the product’s quality.
## 6 Essential Steps for Revamping Test Reports
- **Clearly Define The Scope**
Start by explicitly defining what the test report covers. The scope must be apparent, whether it’s a report for unit tests, integration tests, or [end-to-end testing](https://www.headspin.io/blog/what-is-end-to-end-testing). Stakeholders should immediately understand what part of the product or feature the report evaluates.
- **Include Relevant Metrics**
The usefulness of a test report is significantly increased when it includes pertinent metrics. Metrics such as test pass rate, coverage, and execution time provide tangible insights. If you’re specifically looking into areas like [user experience optimization](https://www.headspin.io/blog/optimize-user-expereince-for-your-websites), then metrics on load times, response times, and user engagement will be vital.
- **Visualize Data**
Incorporate graphs, charts, and other visual aids. Visuals can make complex data more digestible and offer stakeholders a quicker understanding of the report. For instance, a pie chart showing the pass-fail ratio of tests or a line graph depicting the response times can provide instant clarity.
- **Offer Recommendations**
A good test report doesn’t just highlight issues—it provides solutions. After detailing the findings, offer actionable recommendations. These can range from suggestions for code optimization to emphasizing the need for additional testing in specific areas.
- **Highlight User Experience Insights**
Given the increasing emphasis on user-centric products, focus on the user experience optimization aspect. This includes detailing how the product performs across various devices and geographies, as platforms like HeadSpin can provide this data. Insights into potential bottlenecks or pain points for users can drastically improve product iterations.
- **Ensure Continuity**
A test report should never exist in isolation. Always relate your current findings with past reports. Highlighting trends, such as a particular feature consistently failing across multiple test cycles or an improvement in response times after a set of optimizations, will provide a bigger picture and more substantial insights.
## Conclusion
In conclusion, an optimized test report goes beyond merely presenting findings. It offers clear insights, actionable recommendations, and an emphasis on user experience, making it an invaluable asset in the product development cycle.
When striving for the epitome of test reporting, tools, and platforms play an indispensable role. Platforms like HeadSpin provide a wealth of information, ensuring that tests are conducted across devices and geographies in real-world conditions. By leveraging these tools, creating a comprehensive test report becomes a more streamlined and insightful process.
As we evolve in the digital age, the importance of clear communication through test reports will only amplify. Adopt these six steps, and you’ll undoubtedly make your test reports an essential tool in your product development toolkit.
_Article resource: This blog was first published on https://www.vamonde.com/revamping-test-reports-6-essential-steps-for-improvement/_ | jennife05918349 |
1,913,905 | Top 10 Web Frameworks in 2024 | With new frameworks appearing often to meet the changing demands of consumers and developers alike,... | 0 | 2024-07-06T16:05:54 | https://www.nilebits.com/blog/2024/07/top-10-web-frameworks-in-2024/ | javascript, angular, react, vue | With new frameworks appearing often to meet the changing demands of consumers and developers alike, the field of [web development](https://www.nilebits.com/blog/2024/02/web-development-job-in-2024/) is always expanding. Several web frameworks with cutting-edge functionality, better speed, and better developer experiences should have a big influence in 2024. With an examination of their distinctive features, code samples, and an explanation of why these frameworks are becoming more and more popular, this article looks at the top 10 web frameworks to watch in 2024.
1. Next.js: The Ultimate React Framework
Next.js continues to lead the charge in the React ecosystem, providing a robust framework for server-side rendering, static site generation, and API routes. In 2024, Next.js introduces several exciting features, including improved image optimization, enhanced middleware capabilities, and better integration with serverless functions.
Code Example:
import React from 'react';
import Head from 'next/head';
```
const Home = () => (
<div>
<Head>
<title>My Next.js App</title>
</Head>
<h1>Welcome to Next.js!</h1>
</div>
);
export default Home;
```
2. SvelteKit: Simplifying Web Development
SvelteKit, built on the popular Svelte framework, aims to simplify web development by offering a zero-configuration setup, fast performance, and a smooth developer experience. Its unique approach of compiling components at build time ensures efficient, optimized applications.
Code Example:
```
<script>
let name = 'world';
</script>
<h1>Hello {name}!</h1>
```
3. Angular: Enhanced Performance and Features
Angular remains a powerhouse in the web development world, and 2024 brings even more enhancements. The latest version focuses on performance improvements, new reactive forms API, and better tooling for debugging and profiling applications.
Code Example:
```
import { Component } from '@angular/core';
@Component({
selector: 'app-root',
template: `<h1>Welcome to Angular!</h1>`
})
export class AppComponent {}
```
4. Vue.js: Versatile and Progressive
Vue.js continues to be a versatile and progressive framework, offering a balance between simplicity and powerful features. The 2024 updates include improved TypeScript support, enhanced composition API, and better state management solutions.
Code Example:
```
import { createApp } from 'vue';
const App = {
template: `<h1>Hello Vue!</h1>`
};
createApp(App).mount('#app');
```
5. Nuxt.js: Full-Stack Vue Framework
Nuxt.js, a full-stack framework built on Vue.js, provides server-side rendering, static site generation, and powerful module ecosystem. In 2024, Nuxt.js focuses on improving performance, developer experience, and integration with modern web technologies.
Code Example:
```
export default {
head() {
return {
title: 'My Nuxt.js App'
}
}
}
```
6. Remix: The Future of React Development
Remix is gaining popularity for its focus on performance and developer experience. It provides server-side rendering, data loading at the component level, and a novel approach to routing, making it a framework to watch in 2024.
Code Example:
```
import { Link } from 'remix';
export default function Index() {
return (
<div>
<h1>Welcome to Remix!</h1>
<Link to="/about">About</Link>
</div>
);
}
```
7. Blazor: .NET's Frontend Revolution
Blazor, a framework for building interactive web applications using C# and .NET, is transforming the way developers approach frontend development. In 2024, Blazor introduces improved performance, better debugging tools, and enhanced integration with .NET 6.
Code Example:
```
@page "/"
<h1>Hello, Blazor!</h1>
```
8. Astro: Fast and Lightweight
Astro is a modern web framework focused on performance, offering a unique approach by allowing developers to mix and match different frontend frameworks. Its zero-JS by default philosophy ensures that only the necessary JavaScript is shipped to the client.
Code Example:
```
---
import MyComponent from './MyComponent.jsx';
---
<html>
<body>
<h1>Welcome to Astro!</h1>
<MyComponent />
</body>
</html>
```
9. Qwik: Resumable Web Applications
Qwik, developed by the team behind Angular, introduces a novel concept of resumable web applications. It focuses on delivering instant loading times and improving the overall performance of web applications by leveraging server-side rendering and progressive enhancement.
Code Example:
```
import { component$ } from '@builder.io/qwik';
export const MyComponent = component$(() => {
return <h1>Hello, Qwik!</h1>;
});
```
10. RedwoodJS: Full-Stack Jamstack
RedwoodJS is a full-stack framework designed for the Jamstack, combining the power of React, GraphQL, and Prisma. It simplifies the development of modern web applications, offering a seamless developer experience and a robust set of tools for building scalable applications.
Code Example:
```
import { RedwoodProvider, useQuery } from '@redwoodjs/web';
import gql from 'graphql-tag';
const QUERY = gql`
query {
users {
id
name
}
}
`;
const Users = () => {
const { data } = useQuery(QUERY);
return (
<ul>
{data.users.map(user => (
<li key={user.id}>{user.name}</li>
))}
</ul>
);
};
const App = () => (
<RedwoodProvider>
<Users />
</RedwoodProvider>
);
export default App;
```
Conclusion
The web development landscape in 2024 is set to be exciting, with these top 10 web frameworks pushing the boundaries of what’s possible. Whether you’re building fast, static sites with Astro, creating full-stack applications with RedwoodJS, or diving into the innovative concepts of Qwik and Remix, there’s a framework tailored to your needs. By embracing these frameworks, developers can stay ahead of the curve, delivering high-performance, scalable, and maintainable web applications.
References
[Next.js Documentation](https://nextjs.org/docs)
[SvelteKit Documentation
](https://kit.svelte.dev/docs/introduction)
[Angular Documentation
](https://v17.angular.io/docs)
[Vue.js Documentation
](https://vuejs.org/guide/introduction.html)
[Nuxt.js Documentation
](https://v2.nuxt.com/docs/get-started/installation)
[Remix Documentation
](https://remix.run/docs/en/main)
[Blazor Documentation
](https://learn.microsoft.com/en-us/aspnet/core/blazor/?view=aspnetcore-5.0)
[Astro Documentation
](https://docs.astro.build/en/getting-started/)
[Qwik Documentation
](https://qwik.dev/docs/)
[RedwoodJS Documentation
](https://docs.redwoodjs.com/docs/index)
These frameworks represent the forefront of web development technology, offering tools and features that empower developers to build the web of tomorrow. | amr-saafan |
1,913,886 | Are you writing test for the first time? This might help. | It can be a daunting task to write tests when you do not even know what to test for or why you are... | 0 | 2024-07-06T16:04:13 | https://dev.to/hellodemola/are-you-testing-in-react-for-the-first-time-this-might-help-2jec | jest, testing, react, beginners | It can be a daunting task to write tests when you do not even know what to test for or why you are testing. In this article, I will attempt to answer these three questions:
- Why am I writing tests?
- What am I testing for?
- How do I write tests in ReactJs?
### Why am I writing tests?
I still remember the confusion I felt when testing became mandatory at one of my previous engagements. The first question I asked, in protest, was "Why am I testing on the front end?!"
Good question.
Can't I open the browser and test manually? Why do I need to write tests? And what am I even testing for?
These tests are written to catch issues during development. Their purpose is to help write more maintainable code. For instance, if you are working on a project with other developers, it is wise to write tests to monitor and check how changes in code affect other functions dependent on the changed functions. This also applies when you are writing the code, to ensure that you catch other use cases you have not prepared for while working on your code.
### What am I testing for?
So let's write a function that takes two parameters and based on those two parameters returns a statement.
This is a simple function that returns a statement about the name and age passed into the function. What could be wrong with this code?
Well, what happens if, for some strange reason, name and age are not passed into this function, what would happen?
It will return `my name is undefined and I am undefined years old`. I know someone would notice the function is written in typescript, (Javascript with type). That should detect the error at build time, but what happens if the endpoint does not return the parameters you will use for this function? It will print something that was not intended to be printed. With tests, unintentional results can be caught in the 'test coverage'. Once caught, you can adjust your functions to address these issues. In our case, we can handle this issue in our function:
The type of test written for single functions is called a unit test. You are testing the unit of test.
Other form of written tests, among others, are regression test and integration test; to test how different part of the application works together.
### How do I write tests in ReactJs?
The first thing to be decided is the environment that provides the DOM API. This is where the test will be run. For that, we have options in Javascript like:
- [Jest](https://jestjs.io/)
- [Mocha + JSDOM] (https://mochajs.org/)
Jest, for example, can run tests for our sample code.
Weird looking? You can consult the Jest documentation but let me break this down a little.
`it('NAME_OF_TEST', () => {})` can also be `test('NAME_OF_TEST', () => {})` which means you are testing the function inside this test.
### React testing Library
But to test your react components and hooks, you will need a DOM Testing Library.
A good DOM testing library for React is [React testing library](https://testing-library.com/docs/react-testing-library/intro/).
With this, you can test your react components. You can test cases such as when a form is filled, when a button is pressed, or if this button is disabled while the form is loading.
I hope I have clarified testing if you are doing it for the first, or second or You still do not get the concept of testing and testing on React Js.
Thanks for reading.
| hellodemola |
1,913,904 | Gold Packers and Movers: Your Reliable Choice for Relocation in Chandigarh | Introduction Relocating can be stressful, but with Gold Packers and Movers in Chandigarh, it’s a... | 0 | 2024-07-06T16:02:25 | https://dev.to/sahil_kumar_13e928af1877b/gold-packers-and-movers-your-reliable-choice-for-relocation-in-chandigarh-le0 | Introduction
Relocating can be stressful, but with G[old Packers and Movers in Chandigarh](https://goldmoverspackers.com/), it’s a breeze. Whether it’s [house shifting in Chandigarh](https://goldmoverspackers.com/service/house-shifting-service-chandigarh/) or car transport in Chandigarh, our team ensures a smooth and hassle-free experience.
1. Why Choose Gold Packers and Movers in Chandigarh?
Experience: With years of experience, we handle your belongings with care.
Comprehensive Services: From packing to transportation, we cover it all.
Customer Satisfaction: We prioritize our customers, ensuring a seamless process.
2. Our Services
House Shifting in Chandigarh
Efficient Packing: We use high-quality materials to pack your household items securely.
Safe Transportation: Our skilled team ensures your belongings reach safely.
Unpacking Assistance: We help you settle into your new home without any hassle.
Car Transport in Chandigarh
Secure Handling: We take special care in transporting your vehicle.
Timely Delivery: We ensure your car reaches the destination on time.
Insurance Coverage: Your vehicle is insured during transit for added peace of mind.
Packers and Movers in Hisar
Local Expertise: Our team in Hisar knows the best routes for efficient moving.
Customized Solutions: We offer tailored packages to meet your specific needs.
Affordable Rates: Competitive pricing without compromising on quality.
3. The Gold Packers and Movers Process
Initial Consultation: We assess your moving needs and provide a detailed quote.
Packing: Our team packs your items with care, ensuring safety during transit.
Loading and Transportation: Using the latest equipment, we load and transport your belongings securely.
Unloading and Unpacking: Upon arrival, we help unpack and arrange your items.
4. Benefits of Choosing Us
Trained Professionals: Our team is skilled in handling all types of relocations.
Modern Equipment: We use state-of-the-art tools for safe loading and unloading.
Customer Support: Our support team is always available to answer your queries.
5. Tips for a Smooth Move
Plan Ahead: Schedule your move in advance to avoid last-minute stress.
Declutter: Get rid of items you no longer need to make packing easier.
Label Boxes: Clearly label all boxes to simplify the unpacking process.
6. Common Mistakes to Avoid
Overpacking Boxes: This can lead to damage during transit.
Not Insuring Valuables: Always opt for insurance for valuable items.
Last-Minute Arrangements: Plan your move in advance to ensure availability.
7. Frequently Asked Questions
What services do you offer in Chandigarh?
We offer house shifting, car transport, office relocation, and more.
How can I book your services?
You can contact us via phone or our website to schedule your move.
Do you provide packing materials?
Yes, we provide high-quality packing materials for all your items.
Is there insurance coverage for my belongings?
Yes, we offer insurance to protect your belongings during transit.
How long does it take to complete a move?
The time depends on the volume of items and the distance of the move.
Choosing Gold Packers and Movers in Chandigarh ensures a stress-free moving experience. Whether it’s house shifting in Chandigarh or car transport, our professional team is here to help every step of the way. Contact us today for a smooth relocation!3 | sahil_kumar_13e928af1877b | |
1,913,902 | Day 5: Adding Dark Mode to My Social Media App 🚀 | Dark mode has been a highly requested feature, and implementing it has been a rewarding experience.... | 0 | 2024-07-06T15:51:26 | https://dev.to/sushilmagare10/day-5-adding-dark-mode-to-my-social-media-app-1ngg | javascript, programming, react, typescript |
Dark mode has been a highly requested feature, and implementing it has been a rewarding experience. Using Next.js and Tailwind CSS, I seamlessly integrated dark mode into the app, enhancing the user experience and making it easier on the eyes for late-night browsing.
Here's a quick overview of what I did:
Utilized Tailwind CSS's dark mode feature for easy theming.
Ensured that all components adapt smoothly between light and dark themes.
Tested the app across different devices to ensure consistency.
I love how it looks and can't wait to share more updates!
Feel free to connect with me and share your thoughts! Let's chat and collaborate! 🌐💻
| sushilmagare10 |
1,913,901 | How to Use Customer Feedback to Improve Retention and Drive Growth | This Blog was Originally Posted to Churnfree Blog Ever thought about why some companies are brilliant... | 0 | 2024-07-06T15:44:40 | https://churnfree.com/blog/customer-feedback-for-growth-retention-success/ | churnfree, churnretention, churnmanagement, saaschurn | **This Blog was Originally Posted to [Churnfree Blog](https://churnfree.com/blog/customer-feedback-for-growth-retention-success/?utm_source=Dev.to&utm_medium=referral&utm_campaign=content_distribution)**
Ever thought about why some companies are brilliant at retaining customers? It’s not just luck—they’re listening.
**<u>“Feedback is the Breakfast of Champions” – Ken Blanchard.</u>**
Paying attention to customer feedback to boost retention rates can revolutionize your business growth. Customer feedback is a window into what customers really want, need, and expect from a brand. This kind of data is like a roadway for companies striving to keep customers coming back.
By analyzing customer feedback for retention improvement, companies gain knowledge that fuels strategies to stay ahead of the competition. Using customer feedback to improve retention is a smart way to succeed in customer retention and overall business growth.
Let’s explore how to collect, utilize, and analyze customer feedback to boost retention rates and overall business growth.
**Why Customer Feedback Matters?**
Your customers’ feedback is how they speak up about what they appreciate and where improvements are needed in your products, services, and overall experience. It’s a helpful tool to identify where you excel and where there’s room to grow. According to a study, 86% of buyers are willing to pay more for a better customer experience. Taking the time to listen shows that you value their thoughts, building trust and a stronger connection, leading to loyalty.
Here’s why customer feedback matter to your business and overall customer experience:
- **Spotting Improvement Areas:** It highlights where your products can get better.
- **Making Customers Feel Valued:** Getting their input makes customers feel included and essential.
- **Driving Recommendations:** Positive feedback leads to personal recommendations.
- **Encouraging Repeat Business:** Using feedback convinces customers to return for more, eventually reducing churn.
- **Turning Negatives Around:** Even negative feedback can improve your product.
- **Attracting New Customers:** Positive experiences from feedback bring in new customers.
- **Building Brand Loyalty:** Listening to feedback strengthens loyalty to your brand.
However, despite its apparent benefits for product managers, customer service teams, analysts, marketers, and everyone in your organization, surprisingly, a recent study found that 42% of companies skip gathering customer feedback. [Leveraging customer feedback for retention](https://churnfree.com/blog/8-effective-customer-retention-strategies/?utm_source=Dev.to&utm_medium=referral&utm_campaign=content_distribution) is essential to keep your customers coming back and ensure a robust and lasting relationship.
**Gathering Customer Feedback for Improved Retention Strategies**
When you gather customer feedback, you seek practical data to refine your strategies for attracting and retaining customers. There are various ways to do this, such as surveys, focus groups, interviews, and online forums. Each method has strengths and limitations, so choosing the right one hinges on your specific needs and objectives. Here are a few tried and tested customer feedback collection methods:
**Surveys**
Surveys are a widely favored method for gathering customer feedback. They’re easy to distribute to a large audience and can help spot trends when analyzing the data. Surveys can be conducted online, through mail, or via phone, created as per your desired level of simplicity or complexity.
**Focus Groups**
Engaging a small group of customers in focused discussions about specific topics or products offers rich, qualitative insights that surveys might not uncover.
**Customer Interviews**
Speaking directly with customers one-on-one allows more personalized customer feedback to boost retention rates. However, it’s time-intensive and might only be feasible for businesses with a small customer base.
**Online Forums and Reviews**
These platforms provide details about what customers say about your business, products, or services. They also serve as helpful means for gauging customer sentiments over time.
Using customer feedback to improve retention is one of the top strategies to keep your business growing a way to gain insights that can refine and strengthen your overall business strategy, steering it toward success by better understanding and serving your customers’ needs.
**7 Simple Steps to Analyze Customer Feedback**
Once you’ve gathered customer feedback and pinpointed the insights you want to focus on, the challenge is transforming this diverse feedback into actionable strategies for your company. But how do you make sense of open-ended feedback and turn it into a product roadmap?
Let’s provide simple guidelines to analyze and develop a clear understanding of customer sentiments, enabling you to make informed decisions to refine your offerings and utilize customer feedback to boost retention rates:
**Step #1: Organize Your Data for Feedback Analysis**
To start, gather all the written customer feedback you plan to review, along with essential details about each customer, and arrange them neatly in a spreadsheet. It’s helpful to include specific customer attributes, like their lifetime as a customer, spending habits, the date of feedback submission, and where the feedback originated, like a customer survey question.
This organized spreadsheet is a central hub where you compile feedback and relevant customer information. It’s like creating a structured database to easily sort and analyze the data for more in-depth insights into your customers’ thoughts and experiences. This step sets the foundation for a comprehensive and systematic analysis to gain feedback-driven customer retention.
**Step #2: Organize Feedback Categories**
Now, you need to figure out how to organize and make sense of your collected customer feedback. Here’s how you can do it:
- **Group by Feedback Type:** Start by categorizing feedback into different types. This step helps when dealing with unsorted feedback from customer support or open-ended survey responses where customers can express any thoughts.
- **Break Down into Feedback Themes:** If you have diverse feedback, breaking it into themes helps. This may be optional for smaller data sets (around 50 feedback entries or less). Themes typically relate to specific product aspects, such as distinct product features. The themes you create should directly relate to the received feedback and often revolve around product features or unmet customer needs. They could be team-specific (like customer support, sales, or marketing) or tied to particular customer pain points.
- **Employ Feedback Codes:** Feedback codes aim to summarize customer feedback in a clear, actionable manner. These codes should capture the essence of the customer’s point in concise yet descriptive terms, making it understandable even to someone unfamiliar with the project. The goal is to distill feedback objectively, regardless of personal agreement.
By sorting and categorizing feedback based on type, theme, and codes, you’re laying the groundwork to extract meaningful insights. These structured categories help dissect and comprehend data for actionable steps toward achieving feedback-driven customer retention.
**Step #3: Take a Quick Look**
Now, it’s time to take a quick look at the feedback to grasp its diversity. Start by scanning through the feedback to gauge its variety. If each customer shares vastly different feedback, expect a larger volume to analyze before spotting patterns. Conversely, if the initial 50 feedback entries focus on a particular product issue, you might need to review fewer entries. This initial overview helps estimate the extent of feedback diversity. If the feedback spans a wide range of topics or concerns, preparing for a more comprehensive analysis might be necessary.
Conversely, if a common issue emerges quickly in the initial set of feedback, you may need a more focused review. This preliminary step scans the diversity and potential patterns within the feedback. It helps you prepare for a more detailed analysis, helping you understand the scope and approach needed in analyzing customer feedback for retention improvement.
**Step #4: Code the Feedback**
Find a quiet spot to concentrate and carefully review each piece of user feedback. Begin coding each entry systematically. The specific codes you create will relate directly to the product in question. Record these separately for clarity if a single feedback entry addresses multiple points (like two distinct feature requests).
**Step #5: Refine the Feedback Codes**
It’s alright to begin with broader codes and refine them later. Pay close attention to the exact language used in the feedback. What might seem like similar issues at first glance could be separate concerns.
For instance, if you initially encounter several comments related to “Email issues,” a deeper review might uncover distinct issues like an “Email composer bug” versus an “Email delivery bug,” each requiring specific attention and solutions.
This coding process systematically organizes feedback, capturing nuanced points and distinct issues within the customer responses. It’s a necessary step in thoroughly analyzing customer feedback for retention improvement.
**Step #6: Evaluating Code Popularity**
After coding all the feedback, your next move is to tally the total occurrences of each code. This process identifies the most prevalent feedback and shows underlying patterns within your customer feedback.
**Step #7: Summarizing and Sharing Insights**
Now that your data is coded, it’s time to compile a summary based on the popularity of identified issues and discuss these findings with your product team.
- For fewer than 50 feedback entries, summarize the actionable insights in a concise table or a one-page document.
- If dealing with a larger volume of feedback, segment it based on the previously discussed variables like “feedback type” and “feedback theme.”
This approach streamlines the process of [using customer feedback to improve retention](https://churnfree.com/blog/customer-feedback-to-boost-retention/?utm_source=Dev.to&utm_medium=referral&utm_campaign=content_distribution) and distribute feedback categories to various teams within your company for action. This summary provides a clear snapshot of the prevalent issues, facilitating focused action and strategies to enhance customer experience and retention.
**Implementing and Monitoring Customer Feedback into Retention Strategies**
To ensure the policies derived from customer feedback make a tangible impact, you must implement them and continuously oversee their performance. Here’s how to execute and monitor these policies effectively:
- **Clear Communication and Support:** Commence by clearly and consistently communicating these policies to your team and stakeholders. Equip them with essential resources, training, and support for successful execution.
- **Performance Monitoring:** Continuously monitor the performance and impact of these policies. Measure their influence on customer satisfaction, retention, loyalty, and referrals. Utilize tools like feedback surveys, metrics, indicators, and dashboards to track and evaluate progress.
- **Continuous Improvement:** Regularly collect and analyze new feedback to assess policy effectiveness. Identify areas that require improvement or adjustment based on this fresh feedback analysis. It’s an ongoing cycle of implementation, assessment, and refinement to ensure these policies evolve in line with customer needs.
In a company boasting over 200 million prime members, one might assume customer feedback gets lost in the shuffle. However, Jeff Bezos, Amazon’s founder, emphasizes, **“At Amazon, we innovate by starting with the customer and working backward. That becomes the touchstone for how we invent.”** By incorporating customer feedback, Amazon has been successful for over two decades.
With active implementation and vigilant monitoring policies inspired by customer insights, you create an environment where feedback-driven customer retention drives continual improvement.
**How Customer Feedback Can Fuel Business Growth?**
Customer feedback highlights your marketing strengths, product successes, and areas ripe for enhancement. Big companies, like Netflix and Apple, capitalize on customer feedback to refine their service, reduce churn, and shape marketing strategies. Analyzing viewing patterns and ratings aids in suggesting personalized shows and movies, enhancing feedback-driven customer retention.
**Let’s see how this feedback can fuel business growth:**
- **Discover Unique Selling Propositions (USPs):** Users’ input identifies standout features that set your product apart, delivering useful content for your messaging against competitors.
- **Enhance Product Descriptions:** Customer feedback illuminates desirable features and benefits, enhancing your product’s attractiveness to potential buyers.
- **Use Positive Feedback:** Turn favorable feedback into credible testimonials. Real experiences of satisfied customers build trust and boost product adoption.
- **Language Alignment:** Pay attention to customers’ language in feedback to align your messaging. Speaking their language makes your brand more relatable.
- **Guiding Product Evolution:** Customer feedback shapes future product enhancements, aligning with long-term strategies.
- **Expanding Business Horizons:** Gauge new product demand or the potential reception in new areas.
- **Personalization and Customization:** Use insights to personalize offerings, delivering customized recommendations and communications. This fosters stronger relationships and loyalty.
- **Validating Innovations via Beta Testing:** Test new ideas or features with a customer group before a full-scale launch. Validate and refine based on their feedback.
**Bottom Line!**
As you actively seek, analyze, and act on customer feedback, you can refine your product offerings, communication strategies, and increase your customer retention rate. This ongoing learning and improvement process significantly impacts customer satisfaction, loyalty, and business expansion in a customer-focused world. Remember to treat feedback as an asset. Centralize all feedback instead of scattering it across multiple spreadsheets. Automating manual processes with specialized customer feedback tools streamlines this beneficial information.
While various [customer retention platforms](https://churnfree.com/?utm_source=Dev.to&utm_medium=referral&utm_campaign=content_distribution) exist for analyzing customer feedback for retention improvement, opt for one that simplifies data extraction without complexities. This ensures effectively using customer feedback to improve retention and growth in your business.
| churnfree |
1,913,900 | What Are the Key Steps in the EB-5 Visa Process? | The EB-5 Investment Visa offers foreign investors a path to U.S. residency through substantial... | 0 | 2024-07-06T15:42:04 | https://dev.to/eb-5-visa/what-are-the-key-steps-in-the-eb-5-visa-process-135g | startup | The EB-5 Investment Visa offers foreign investors a path to U.S. residency through substantial investments that create jobs for American workers. Understanding the [EB-5 visa process](https://www.activeavenues.com/eb5-visa/) is essential for ensuring a smooth application and successful outcome. This article breaks down the steps involved in the EB-5 visa process, providing clarity on each phase from selecting an investment project to obtaining permanent residency.
**1. Selecting a Suitable Investment Project
**The first step in the EB-5 visa process is selecting a suitable investment project. Investors can choose between two main types of investments:
Direct Investment: Investing directly in a new commercial enterprise, which typically requires more active involvement in managing the business.
Regional Center Investment: Investing through a USCIS-designated Regional Center, which often allows for more passive involvement and can count indirect job creation towards the job creation requirement.
When selecting a project, it's crucial to ensure that it meets all EB-5 investment visa requirements, including the minimum investment amount and job creation potential. Research and due diligence are vital to identify the best EB-5 investments that align with your financial goals and risk tolerance.
**2. Filing Form I-526
**Once a suitable investment project is selected, the next step is to file Form I-526, Immigrant Petition by Alien Investor. This form is a critical component of the EB-5 visa process, as it demonstrates that the investment meets all EB-5 program requirements. The petition must include:
Proof of the investment amount (either $1.8 million or $900,000 in a Targeted Employment Area).
A comprehensive business plan showing how the investment will create at least 10 full-time jobs for U.S. workers.
Documentation verifying the lawful source of the investment funds.
Filing Form I-526 requires meticulous preparation and thorough documentation to ensure compliance with USCIS standards.
**3. Approval of Form I-526 and Applying for Conditional Residency
**After filing Form I-526, the USCIS will review the petition. If approved, the investor can then apply for conditional permanent residency. This step involves different forms depending on the investor's location:
Form I-485: Application to Register Permanent Residence or Adjust Status (if the investor is already in the U.S.).
DS-260: Immigrant Visa Electronic Application (if the investor is applying from abroad).
Upon approval of the conditional residency application, the investor and their immediate family members (spouse and unmarried children under 21) will receive conditional green cards valid for two years.
**4. Fulfilling Job Creation Requirements
**During the two-year conditional residency period, the investor must fulfill the job creation requirements stipulated by the EB-5 program. This involves ensuring that the investment leads to the creation or preservation of at least 10 full-time jobs for U.S. workers. These jobs can be direct, created within the commercial enterprise, or indirect, resulting from the investment's broader economic impact.
Monitoring the investment project and maintaining detailed records of job creation activities are crucial during this period to meet EB-5 visa requirements.
**5. Filing Form I-829
**To remove the conditions on permanent residency, the investor must file Form I-829, Petition by Investor to Remove Conditions on Permanent Resident Status. This form must be filed within the 90-day period immediately before the second anniversary of the investor's admission to the U.S. as a conditional permanent resident. The petition must demonstrate that:
The investor has maintained the investment in the new commercial enterprise.
The investment has resulted in the creation or preservation of at least 10 full-time jobs.
Successful approval of Form I-829 grants the investor and their family members permanent resident status, allowing them to live, work, and study anywhere in the United States without conditions.
**Conclusion
**The EB-5 visa process is a comprehensive journey that requires careful planning, substantial investment, and strict adherence to USCIS requirements. By understanding each step of the process—from selecting a suitable investment project to fulfilling job creation requirements and filing necessary petitions—investors can navigate the complexities of the EB-5 program with confidence.
ActiveAvenues provides expert guidance throughout the entire EB-5 visa process, helping [investors](https://dev.to/startuppaisa/top-ways-to-seek-investors-for-your-startup-in-2020-48cc) make informed decisions, comply with all regulations, and achieve their goal of obtaining U.S. residency. With careful preparation and support, the EB-5 Investment Visa can open the door to new opportunities and a brighter future in the United States. | eb-5-visa |
1,913,898 | Struggling with Node.js | I am trying to get my first Node.js server to work with React Front-end for a site I am building for... | 0 | 2024-07-06T15:34:59 | https://dev.to/thomasspare/struggling-with-nodejs-5ch3 | I am trying to get my first Node.js server to work with React Front-end for a site I am building for a client. I have mostly dealt with Django REST when I need a server but I heard Node.js was simpler and maybe more appropriate for this cause, I am also more comfortable with Javascript.
**Basic structure of the website:**
1. - Form for uploading large amounts of PDF documents, images, power point presentations.
2. - Search functionality for the database to find certain PDFs by author, country, upload date and other values.
3. - I am using React DocViewer to display the PDF documents.
**The Problem:**
The problem I am having now is that I am able to retrive all the saved data as JSON but not display PDF from a single column based on FileId with DocViewer in ViewPdf.js.
.
This is the page for the DocViewer:
```
import React, { useState, useEffect } from 'react';
import { useParams } from 'react-router-dom';
import DocViewer, { PDFRenderer, HTMLRenderer } from "react-doc-viewer";
const ViewPdf = () => {
const { fileId } = useParams();
const [fileUrl, setFileUrl] = useState('')
useEffect(() => {
// Construct the URL to fetch the file
const url = `/api/uploads/:fileId`;
setFileUrl(url);
}, [fileUrl, fileId]);
const docs = [
{ uri: fileUrl }
];
return (
<DocViewer
pluginRenderers={[PDFRenderer, HTMLRenderer]}
documents={docs}
config={{
header: {
retainURLParams: true,
},
} } />
);
}
export default ViewPdf;
```
**The ViewPdf is opened with this Search page:**
```
import React, { useEffect, useState } from 'react';
import { useNavigate } from 'react-router-dom';
import '@cds/core/select/register.js';
function Search() {
const navigate = useNavigate();
const [uploads, setUploads] = useState([]);
const [filter, setFilter] = useState({
category: '',
uploadDate: '',
author: '',
country: ''
});
useEffect(() => {
fetch('http://localhost:8000/api/uploads')
.then(response => response.json())
.then(data => setUploads(data))
.catch(error => console.error('Error:', error));
}, []);
const handleFilterChange = (event) => {
const { name, value } = event.target;
setFilter(prevFilter => ({
...prevFilter,
[name]: value
}));
};
const filteredUploads = uploads.filter(upload => {
const { category, uploadDate, author, country } = filter;
return (
(category === '' || upload.category === category) &&
(uploadDate === '' || upload.uploaddate === uploadDate) &&
(author === '' || upload.author === author) &&
(country === '' || upload.country === country)
);
});
const handleFileClick = (upload) => {
const fileId = upload.id;
navigate(`/api/uploads/${fileId}`);
};
return (
<div style={{ display: "flex", justifyContent: "center" }}>
<div style={{ textAlign: "left" }}>
<div style={{ marginBottom: "10px" }}>
<label style={{ display: "inline-block", width: "100px" }}>Category:</label>
<input type="text" name="category" value={filter.category} onChange={handleFilterChange} />
</div>
<div style={{ marginBottom: "10px" }}>
<label style={{ display: "inline-block", width: "100px" }}>Upload Date:</label>
<input type="date" name="uploadDate" value={filter.uploadDate} onChange={handleFilterChange} />
</div>
<div style={{ marginBottom: "10px" }}>
<label style={{ display: "inline-block", width: "100px" }}>Author:</label>
<input type="text" name="author" value={filter.author} onChange={handleFilterChange} />
</div>
<div style={{ marginBottom: "10px" }}>
<label style={{ display: "inline-block", width: "100px" }}>Country:</label>
<select name="country" value={filter.country} onChange={handleFilterChange}>
<option value="">All</option>
<option value="USA">USA</option>
<option value="Canada">Canada</option>
<option value="UK">UK</option>
<option value="Albania">Albania</option>
<option value="Andorra">Andorra</option>
<option value="Austria">Austria</option>
<option value="Belarus">Belarus</option>
<option value="Belgium">Belgium</option>
<option value="Bosnia and Herzegovina">Bosnia and Herzegovina</option>
<option value="Bulgaria">Bulgaria</option>
<option value="Croatia">Croatia</option>
<option value="Cyprus">Cyprus</option>
<option value="Czech Republic">Czech Republic</option>
<option value="Denmark">Denmark</option>
<option value="Estonia">Estonia</option>
<option value="Finland">Finland</option>
<option value="France">France</option>
<option value="Germany">Germany</option>
<option value="Greece">Greece</option>
<option value="Hungary">Hungary</option>
<option value="Iceland">Iceland</option>
<option value="Ireland">Ireland</option>
<option value="Italy">Italy</option>
<option value="Kosovo">Kosovo</option>
<option value="Latvia">Latvia</option>
<option value="Liechtenstein">Liechtenstein</option>
<option value="Lithuania">Lithuania</option>
<option value="Luxembourg">Luxembourg</option>
<option value="Malta">Malta</option>
<option value="Moldova">Moldova</option>
<option value="Monaco">Monaco</option>
<option value="Montenegro">Montenegro</option>
<option value="Netherlands">Netherlands</option>
<option value="North Macedonia (formerly Macedonia)">North Macedonia (formerly Macedonia)</option>
<option value="Norway">Norway</option>
<option value="Poland">Poland</option>
<option value="Portugal">Portugal</option>
<option value="Romania">Romania</option>
<option value="Russia">Russia</option>
<option value="San Marino">San Marino</option>
<option value="Serbia">Serbia</option>
<option value="Slovakia">Slovakia</option>
<option value="Slovenia">Slovenia</option>
<option value="Spain">Spain</option>
<option value="Sweden">Sweden</option>
<option value="Switzerland">Switzerland</option>
<option value="Ukraine">Ukraine</option>
<option value="United Kingdom (UK)">United Kingdom (UK)</option>
<option value="Vatican City (Holy See)">Vatican City (Holy See)</option>
</select>
</div>
<ol>
{filteredUploads.sort((a, b) => new Date(b.uploaddate) - new Date(a.uploaddate)).map((upload, index) => (
<li key={index} onClick={() => handleFileClick(upload)}>
<p style={{ display: "inline-block", marginRight: "50px" }}>Upload Date: {upload.uploaddate}</p>
<p style={{ display: "inline-block", marginRight: "50px" }}>Category: {upload.category}</p>
<p style={{ display: "inline-block", marginRight: "50px" }}>Country: {upload.country}</p>
<p style={{ display: "inline-block", marginRight: "50px" }}>Author: {upload.author}</p>
<p style={{ display: "inline-block", marginRight: "50px" }}>ID: {upload.id}</p>
</li>
))}
</ol>
</div>
</div>
);
}
export default Search;
```
The API endpoint for this in Server.js looks like this:
```
app.get("/api/uploads/:fileId", async (req, res) => {
const { fileId } = req.params;
try {
console.log([fileId]);
const queryResult = await pool.query(
"SELECT filename FROM uploads WHERE id = $1",
[fileId]
);
if (queryResult.rows.length > 0) {
const { filename } = queryResult.rows[0];
const filePath = path.join(__dirname, "uploads", filename);
res.sendFile(filePath);
} else {
res.status(404).json({ message: "File not found" });
}
} catch (err) {
console.error(err);
res.status(500).json({ message: "Internal server error" });
}
});
```
I have installed DocViewer on the front-end. My guess is that the problem originate from a miss config of the end point and also what the server should diplay, not JSON but PDF. Or that the mounting somehow gets stuck in a loop and closes the connection to early.
I have this error showing when trying to open a PDF file:
```
ERROR
signal is aborted without reason
at http://localhost:3000/static/js/bundle.js:23248:18
at safelyCallDestroy (http://localhost:3000/static/js/bundle.js:43291:9)
at commitHookEffectListUnmount (http://localhost:3000/static/js/bundle.js:43429:15)
at commitPassiveUnmountOnFiber (http://localhost:3000/static/js/bundle.js:45051:15)
at commitPassiveUnmountEffects_complete (http://localhost:3000/static/js/bundle.js:45031:11)
at commitPassiveUnmountEffects_begin (http://localhost:3000/static/js/bundle.js:45022:11)
at commitPassiveUnmountEffects (http://localhost:3000/static/js/bundle.js:44976:7)
at flushPassiveEffectsImpl (http://localhost:3000/static/js/bundle.js:46797:7)
at flushPassiveEffects (http://localhost:3000/static/js/bundle.js:46751:18)
at http://localhost:3000/static/js/bundle.js:46566:13
```
This is the screen after the error at the ViewPdf.jsx page:
It reads: You need to enable JavaScript to run this app.
As this is my first attempt with Node.js any suggestions are well appreciated. Thanks !
| thomasspare | |
1,913,897 | #4 React Coding - 2 Way Data Binding (Exercise) | Check out this Pen I made! | 0 | 2024-07-06T15:32:51 | https://dev.to/nsen59341/4-react-coding-2-way-data-binding-exercise-596i | codepen | Check out this Pen I made!
{% codepen https://codepen.io/angelo_jin/pen/MWEQmqN %} | nsen59341 |
1,913,895 | How can we design the backend architecture to handle increasing traffic ? | Hello everyone, As IronBox (https://ironbox.kz/) continues to expand its services and customer base,... | 0 | 2024-07-06T15:29:26 | https://dev.to/nurlan_zharmantayev/how-can-we-design-the-backend-architecture-to-handle-increasing-traffic--2a5g | help | Hello everyone,
As IronBox (https://ironbox.kz/) continues to expand its services and customer base, we are looking to redesign our backend architecture to handle increasing traffic and data. We want to ensure our system remains robust, efficient, and scalable.
We would love to hear your thoughts and suggestions on the following:
What are the best practices for designing a scalable backend architecture?
How can we ensure our system can handle sudden spikes in traffic?
What technologies or frameworks would you recommend for scalability and reliability?
How can we efficiently manage and process large amounts of data?
What are the key considerations for maintaining high performance as we scale?
Your insights and experiences will be highly valuable to us. Thank you in advance for your contributions! | nurlan_zharmantayev |
1,913,776 | The JavaScript Labyrinth: Unseen Dangers and Hidden Truths | Disclaimer: This article is intended for those seeking introductory insights into... | 0 | 2024-07-06T15:29:17 | https://dev.to/solitary-polymath/the-javascript-labyrinth-unseen-dangers-and-hidden-truths-49op | javascript, webdev, beginners, cybersecurity | ######Disclaimer:######
######_This article is intended for those seeking introductory insights into JavaScript security practices. Experts in this field may find the content familiar._<br><br>
Greetings, devs. Solitary Polymath here. Let's dispense with the pleasantries and get to the heart of the matter. JavaScript, the language we rely on, is both our greatest tool and our potential downfall. The framework hype is relentless, and the vulnerabilities are ever-looming. It’s time to face these issues head-on and arm ourselves with knowledge.
---
## The Ever-Spinning Carousel:
######[imgsrc](https://dribbble.com/shots/23624300-Gif)
### The Issue
JavaScript frameworks are churned out like clockwork. Every new week, a new framework emerges, promising to be the ultimate solution. If you chase every shiny new tool, you risk spending more time learning frameworks than building robust applications.
### The Reality Check
1. **Evaluate Necessity**: Does this framework solve a problem you actually have, or is it just the latest trend? Stick with what's tried and true unless there’s a compelling reason to switch.
2. **Master the Fundamentals**: Deep knowledge of vanilla JavaScript will always outweigh fleeting familiarity with multiple frameworks. Master the core, and you’ll adapt to any framework thrown at you.
3. **Selective Learning**: Focus on frameworks that align with your long-term project goals. Not every new tool is worth your time or effort.
4. **Community and Reviews**: Listen to the buzz, but be critical. Seek insights from credible sources before diving in.
### My Take
Frameworks can empower you, but don’t let the hype dictate your tech stack. Choose wisely, and let your project needs guide your decisions. Don't be a pawn in the endless game of framework one-upmanship.
---
## Shadows Lurking Beneath
######[imgsrc](https://dribbble.com/shots/14157256-Hacker-Loop)
### The Issue
JavaScript’s pervasiveness makes it a [prime target for attackers](https://owasp.org/www-community/attacks). The combination of widespread use and occasional lax security practices can lead to significant vulnerabilities threatening the integrity of your work.
### The Reality Check
1. **Keep Dependencies Updated**: Regular updates are your first line of defense. Use tools like [npm audit](https://docs.npmjs.com/cli/v10/commands/npm-audit) to stay on top of security issues in your dependencies.
2. **Use Trusted Packages**: Rely on well-maintained, widely-used packages. Always check for recent updates and active maintenance.
3. **Security Best Practices**:
- **Sanitize User Input**: Always. Refer to this guide on [JavaScript Sanitization](https://arc.net/l/quote/nlnpnsso).
- **Content Security Policy (CSP)**: Implement it to mitigate XSS attacks. Here’s how to set up a [Content Security Policy](https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP).
- **Avoid Eval**: Seriously, just don’t. Read more about the [dangers of eval()](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval#never_use_eval).
- **Secure Cookies**: Use them wisely to prevent XSS and CSRF. Learn how to [use HTTP cookies and block access to your cookies](https://developer.mozilla.org/en-US/docs/Web/HTTP/Cookies#security).
4. **Static Analysis Tools**: Employ tools like [ESLint](https://eslint.org/) with security plugins to catch potential issues early.
5. **Regular Security Audits**: [Conduct these](https://dev.to/solitary-polymath/javascript-app-security-audit-4dnn) to stay vigilant and ahead of potential threats.
### My Take
Security isn’t a checkbox – it’s a necessity. Stay vigilant, stay updated, and never get complacent. The integrity of your projects, and by extension your reputation, depends on it.
---
## The Path Forward
JavaScript is a powerful ally, but it requires respect and caution. By being strategic about frameworks and vigilant about security, you can navigate this treacherous landscape effectively.
> Remember, it’s not about the latest trend – it’s about building robust, secure, and maintainable code.
---
#### Stay sharp, stay suspicious.
JavaScript is a double-edged sword. Wield it with precision, stay aware of the pitfalls, and always question the trends. Keep coding, keep questioning, and always be prepared for what’s lurking around the corner.
| solitary-polymath |
1,913,894 | 2582. Pass the Pillow | 2582. Pass the Pillow Easy There are n people standing in a line labeled from 1 to n. The first... | 27,523 | 2024-07-06T15:27:13 | https://dev.to/mdarifulhaque/2582-pass-the-pillow-4gf8 | php, leetcode, algorithms, programming | 2582\. Pass the Pillow
Easy
There are n people standing in a line labeled from 1 to n. The first person in the line is holding a pillow initially. Every second, the person holding the pillow passes it to the next person standing in the line. Once the pillow reaches the end of the line, the direction changes, and people continue passing the pillow in the opposite direction.
- For example, once the pillow reaches the nth person they pass it to the n - 1th person, then to the n - 2th person and so on.
Given the two positive integers n and time, return the index of the person holding the pillow after time seconds.
**Example 1:**
- **Input:** n = 4, time = 5
- **Output:** 2
- **Explanation:** People pass the pillow in the following way: 1 -> 2 -> 3 -> 4 -> 3 -> 2.
After five seconds, the 2nd person is holding the pillow.
**Example 2:**
- **Input:** n = 3, time = 2
- **Output:** 3
- **Explanation:** People pass the pillow in the following way: 1 -> 2 -> 3.
After two seconds, the 3rd person is holding the pillow.
**Example 3:**
- **Input:** n = 8, time = 9
- **Output:** 6
**Constraints:**
- <code>2 <= n <= 1000</code>
- <code>1 <= time <= 1000</code>
**Solution:**
```
class Solution {
/**
* @param Integer $n
* @param Integer $time
* @return Integer
*/
function passThePillow($n, $time) {
$direction = 1; // 1 for forward, -1 for backward
$current = 0; // Starting at the first person
for ($i = 0; $i < $time; $i++) {
$current += $direction;
if ($current == $n - 1) {
$direction = -1; // Change direction to backward when reaching the last person
} elseif ($current == 0) {
$direction = 1; // Change direction to forward when reaching the first person
}
}
return $current + 1; // Convert to 1-based index
}
}
```
- **[LinkedIn](https://www.linkedin.com/in/arifulhaque/)**
- **[GitHub](https://github.com/mah-shamim)**
| mdarifulhaque |
1,913,893 | Mastering React Fragments: Simplifying JSX Structures for Cleaner, Faster Components | React fragments are a feature introduced in React 16.2 that allow you to group a list of children... | 0 | 2024-07-06T15:25:53 | https://dev.to/ajithr116/mastering-react-fragments-simplifying-jsx-structures-for-cleaner-faster-components-3bfb | react, javascript, html, css | React fragments are a feature introduced in React 16.2 that allow you to group a list of children elements without adding extra nodes to the DOM. This is particularly useful in situations where you need to return multiple elements from a component but don't want to introduce unnecessary wrapper elements like `<div>`.
Here's a breakdown of why React fragments are beneficial:
- **Cleaner JSX:** Fragments help keep your JSX code cleaner and more concise by eliminating the need for unnecessary wrapper elements.
- **Improved Performance:** By reducing the number of DOM nodes, fragments can contribute to slightly better performance as there are fewer elements to manipulate in the DOM.
- **Valid HTML Structure:** In certain scenarios, adding extra wrapper elements can lead to invalid HTML structures. Fragments avoid this issue.
There are two ways to create React fragments:
1. **Using the `Fragment` component:** This is the explicit way and involves importing the `Fragment` component from React:
```javascript
import React, { Fragment } from 'react';
function MyComponent() {
return (
<Fragment>
<h1>Hello</h1>
<p>This is some content.</p>
</Fragment>
);
}
```
2. **Using the Shorthand Syntax (`<> ... </>`)** This is a more concise way introduced in React 16.2. It's essentially syntactic sugar for the `Fragment` component:
```javascript
function MyComponent() {
return (
<>
<h1>Hello</h1>
<p>This is some content.</p>
</>
);
}
```
Here are some common use cases for React fragments:
- **Returning Multiple Elements:** When your component needs to return multiple elements from its render method, fragments provide a way to group them without adding an extra DOM node.
- **Conditional Rendering:** If you have conditional logic that determines which elements to render, fragments can help maintain a clean structure without introducing unnecessary wrappers.
- **Keys in Lists:** When working with lists and assigning keys to elements, fragments are often used to group the elements together for proper key assignment.
Overall, React fragments are a valuable tool for keeping your React components well-structured and improving code readability. They help maintain clean JSX and avoid unnecessary DOM elements. | ajithr116 |
1,910,038 | 4. Add Git Support Through a Plugin Manager | Now that I have some changes in my init.lua, I want them under version control. To do that, I want to... | 27,945 | 2024-07-06T15:20:41 | https://dev.to/stroiman/4-add-git-support-through-a-plugin-manager-3gdh | neovim, vim | Now that I have some changes in my `init.lua`, I want them under version control. To do that, I want to have a _plugin_ to support git. But before I do that I want a plugin manager.
While you don't _need_ a plugin manager, it makes life much easier. Btw, most of the time, we talk about a neovim _plugin_, it is actually a neovim _package_. For more information, see `:help packages`.
I will use lazy.nvim as a plugin manager. It seems to be the most widely used currently, and supports
- Lock files, allowing you to go back to a previously working configuration, e.g. when a plugin update broke your config
- Lazy loading non-essential plugins for faster load times.
But it doesn't natively support my desire of being able to reload the configuration ad-hoc. But I can deviate from the standard configuration to help support this use case.
## Bootstrapping Lazy.nvim
Most package managers takes care of downloading plugins from github repositories. But we cannot use the plugin manager to install itself, so first I bootstrap lazy.nvim by explicitly fetching it from git. The code is copy/paste from the installation instructions.
```lua
local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not (vim.uv or vim.loop).fs_stat(lazypath) then
local lazyrepo = "https://github.com/folke/lazy.nvim.git"
local out = vim.fn.system({ "git", "clone", "--filter=blob:none", "--branch=stable", lazyrepo, lazypath })
if vim.v.shell_error ~= 0 then
vim.api.nvim_echo({
{ "Failed to clone lazy.nvim:\n", "ErrorMsg" },
{ out, "WarningMsg" },
{ "\nPress any key to exit..." },
}, true, {})
vim.fn.getchar()
os.exit(1)
end
end
vim.opt.rtp:prepend(lazypath)
```
The code clones lazy.nvim from the GitHub repository, and then adds it to the _runtime path_, a list of folders where vim searches for plugins (see `:help runtimepath`)
I use vim-fugitive by the awesome Tim Pope. Remember that name, over the time he has been the author of some of the most amazing vim plugins. Despite fugitive being a very old plugin for legacy vim, it is still _the_ git plugin to use[^1].
```lua
require("lazy").setup({
"tpope/vim-fugitive"
})
```
I save my configuration (with <kbd><Ctrl>+s</kbd>) and re-source my configuration with <kbd><space>vs</kbd>, and lazy will run. It will open the lazy UI showing that fugitive was installed, and lazy loaded ;) It was already _installed_, as we did that from git.
Now, I can run `:Git`, or even shorter, `:G`, to open a git status windows, from where you can stage files, hunks, commit, append, etc. Further more, you can postfix the `:Git` command with any valid command line git command. As I have been using git from back when the command line was the only real option, I am very comfortable with this, and I can use that to execute any git command.
Learn about the available commands from the help, `:help fugitive`. Here, I've added the changed and new files, and writing the commit message. As you can see, lazy.nvim created a lock file, pointing to the commit hashes of the packages. As lazy.nvim is a vim package itself, lazy.nvim also keeps track of it's own version. We just needed special code to bootstrap it, but now it's a package maintained by lazy, like any other package.
## Viewing Changes in the Current Buffer
Fugitive is awesome for interacting with git, if you want so see changed lines in buffers, a great plugin to install is gitsigns.
The documentation suggests that I should call `require('gitsigns').setup()` after installation, so I add it to the list of plugins, add that line.
```lua
require("lazy").setup({
"tpope/vim-fugitive",
"lewis6991/gitsigns.nvim"
})
require("gitsigns").setup()
```
I re-source the configuration, but that generates a warning and an error.
The warning is that lazy.nvim doesn't support that we re-source the configuration. The error is the configuration of gitsigns, as it hasn't been installed yet.
For now, I will exit and reopen neovim (sigh). Gitsigns gets installed, and now I see the changed and added lines of code directly in my buffer.
As always, read the help file for the new plugin to see how you use it, `:help gitsigns`
## Signcolumn configuration
Gitsigns show their symbol in the "signcolumn", a special column shown next to the line numbers. By default, the signcolumn is shown if it contains any content. So after I committed the file, it is now clean, the signs are removed, the column disappear, and all text moves left. As this screenshot shows to buffers not aligned because of uncommitted changes in one buffer.
I find this jerking around to be annoying, so I want the signcolumn to always be present:
```lua
vim.g.signcolumn="yes"
```
See `:help signcolumn` to learn about the different options.
Note: the signcolumn can be configured differently for each buffer, so reloading the configuration may not have an effect immediately on loaded buffers.
## Coming up
I obviously need to handle new plugins being added, but to do that effectively, I really need to modularise my configuration, so that will be the topic of the next post.
[^1]: You may also want to check out lazygit.nvim[[lazygit.nvim]]lazygit.nvim, which adds more fancy UI than fugitive, but I haven't tried that out myself. First, while the UI is fancier, it doesn't really appear to _solve any problems_, and to me, the simpler UI from fugitive seems more efficient. AFAIK, lazygit also depends on an external program being installed. So to me, fugitive is still _the_ plugin to use. | stroiman |
1,913,892 | Demystifying React: Building Dynamic User Interfaces with Efficiency and Ease | React is a popular open-source JavaScript library used for building user interfaces, particularly for... | 0 | 2024-07-06T15:20:10 | https://dev.to/ajithr116/demystifying-react-building-dynamic-user-interfaces-with-efficiency-and-ease-1kfc | react, javascript, html, css | React is a popular open-source JavaScript library used for building user interfaces, particularly for single-page applications. Developed and maintained by Facebook, React allows developers to create reusable UI components, making it easier to build and manage complex user interfaces.
Key features of React include:
1. **Component-Based Architecture**: React applications are built using components, which are self-contained, reusable pieces of code that define how a part of the UI should appear and behave. This modularity improves maintainability and reusability.
2. **Virtual DOM**: React uses a virtual DOM to optimize updates to the actual DOM. When the state of a component changes, React creates a virtual representation of the DOM, compares it with the previous version, and efficiently updates only the changed parts in the real DOM. This process, called reconciliation, enhances performance.
3. **JSX**: JSX is a syntax extension for JavaScript that allows developers to write HTML-like code within JavaScript. It makes the code more readable and easier to write. JSX is then transpiled to JavaScript by tools like Babel.
4. **Unidirectional Data Flow**: React follows a unidirectional data flow, meaning data flows in one direction from parent components to child components. This makes it easier to understand how data changes affect the UI.
5. **Hooks**: Introduced in React 16.8, hooks are functions that let developers use state and other React features in functional components. Hooks like `useState`, `useEffect`, and `useContext` simplify state management and side effects in functional components.
6. **Ecosystem**: React has a rich ecosystem with various libraries and tools that complement it, such as React Router for routing, Redux for state management, and Next.js for server-side rendering.
React is widely used in the industry for building dynamic, high-performance web applications. Its declarative approach and powerful features make it a preferred choice for developers working on both small and large-scale projects. | ajithr116 |
1,913,890 | Open CV / Tesseract | Hello im new in the dev, and i try to take the information on one image with Tesseract and open CV.... | 0 | 2024-07-06T15:18:42 | https://dev.to/heisenberg_a_d0f35b1e654e/open-cv-tesseract-367d | Hello im new in the dev, and i try to take the information on one image with Tesseract and open CV. But i have a problem i get 0 information.. One professional can explain how this work ? | heisenberg_a_d0f35b1e654e | |
1,913,889 | Baby Picture Generator: Tips and Tricks | What is a Baby Picture Generator? A baby picture generator is a fascinating tool that uses... | 0 | 2024-07-06T15:18:36 | https://dev.to/babygenerator/baby-picture-generator-tips-and-tricks-1bmg | babypicturegenerator, aibabygenerator, futurebabygenerator | ## What is a Baby Picture Generator?
A [baby picture generator](https://aibabypredictor.com/) is a fascinating tool that uses advanced algorithms to create baby images based on provided photos. Whether you’re curious about what your future child might look like or simply having fun with digital artistry, these generators can produce surprisingly lifelike results.
## The Popularity of Baby Picture Generators
The allure of seeing a potential glimpse of your future child has made baby picture generators wildly popular. From expecting parents to playful friends, everyone seems to be jumping on the bandwagon to see the magic of these AI-powered tools.
## How Baby Picture Generators Work
**The Technology Behind Baby Picture Generators**
These generators rely on sophisticated artificial intelligence (AI) and machine learning algorithms. By analyzing features from the input photos, they can predict and render a composite image that approximates what a baby might look like.
**Data Inputs and Outputs**
Typically, users upload photos of the prospective parents. The AI then processes these images, focusing on key facial features such as the eyes, nose, and mouth, to generate a baby picture. The output is a composite image that blends the input features in a childlike representation.
## Choosing the Right Baby Picture Generator
**Key Features to Look For**
When selecting a baby picture generator, consider:
**Accuracy:** How realistic are the generated images?
**User Interface:** Is the tool easy to use?
**Security:**Are your photos handled securely?
**Customization Options:**Can you adjust features like skin tone, hair color, etc.?
## Tips for Using Baby Picture Generators
**High-Quality Photos**
Always use high-resolution images for the best results. Clear, detailed photos allow the AI to accurately analyze and replicate facial features.
**Clear and Bright Lighting**
Good lighting enhances the clarity of facial features, making it easier for the generator to create an accurate baby picture. Avoid shadows and overly bright light that might distort features.
**Focus on Facial Features**
Ensure the faces in the photos are well-centered and clearly visible. Avoid obstructions like sunglasses or hats that can obscure key facial features.
## Common Mistakes to Avoid
**Low-Resolution Images**
Using blurry or pixelated photos can lead to inaccurate or less detailed baby pictures. Always opt for the highest resolution available.
**Unclear or Blurry Photos**
Similar to low-resolution images, unclear photos can confuse the AI, resulting in poor quality outputs.
**Ignoring Instructions**
Each generator may have specific requirements or tips. Ignoring these can lead to subpar results, so always follow the given guidelines.
## Conclusion
[Baby picture generator](https://aibabypredictor.com/) are a delightful blend of technology and creativity. They offer a fun and engaging way to visualize potential future offspring, providing endless entertainment and joy. By following these tips and understanding the tools’ limitations, you can make the most out of your baby picture generator experience. | babygenerator |
1,913,888 | Game Development: A Comprehensive Journey with CS50 2019 - Games Track 🎮 | Comprehensive course on game development, covering programming, design, and implementation. Taught by David J. Malan. | 27,895 | 2024-07-06T15:14:13 | https://dev.to/getvm/game-development-a-comprehensive-journey-with-cs50-2019-games-track-3cn9 | getvm, programming, freetutorial, videocourses |
As an aspiring game developer, I recently stumbled upon the incredible CS50 2019 - Games Track course, and let me tell you, it's been a game-changing (pun intended!) experience. 😄
## Dive into the World of Game Development
This comprehensive course, led by the renowned David J. Malan, takes you on a captivating journey through the various aspects of game development. From the fundamentals of programming to the art of game design and implementation, this course covers it all. 🚀
## Highlights of the Course
- Comprehensive coverage of programming, design, and implementation of games
- Taught by the legendary David J. Malan, a master in the field of computer science
- Provides a thorough introduction to the diverse facets of game development
## Recommendation
If you're passionate about game development, or even if you're just curious about the field, this course is an absolute must-try! 🎉 The wealth of knowledge and practical insights it offers will undoubtedly propel your game development skills to new heights.
## Explore the Course on YouTube
Don't just take my word for it - check out the [YouTube playlist](https://www.youtube.com/playlist?list=PLhQjrBD2T382mHvZB-hSYWvoLzYQzT_Pb) and see for yourself the incredible content that awaits you. 🎥 Dive in, and let the game development journey begin!
## Enhance Your Learning Experience with GetVM Playground 🚀
To truly make the most of the CS50 2019 - Games Track course, I highly recommend using the GetVM Playground. This powerful online coding environment provided by the GetVM Chrome extension allows you to dive right into the course material and put your newfound knowledge into practice. 💻
With GetVM Playground, you can easily access the [CS50 2019 - Games Track tutorials](https://getvm.io/tutorials/cs50-2019-games-track) and experiment with the concepts you've learned, without the hassle of setting up a local development environment. The Playground offers a seamless, browser-based coding experience, empowering you to test your ideas, debug your code, and iterate on your projects with ease. 🔍
Whether you're a seasoned programmer or a beginner, the GetVM Playground provides a safe and accessible space to hone your game development skills. Its intuitive interface and instant feedback make it the perfect companion to the CS50 2019 - Games Track course, allowing you to truly immerse yourself in the learning process and see your creations come to life. 🎮
So, why not take your game development journey to the next level? Dive into the GetVM Playground and unlock the full potential of the CS50 2019 - Games Track course. Let's create something amazing together! 💪
---
## Practice Now!
- 🔗 Visit [Game Development | CS50 2019 - Games Track](https://www.youtube.com/playlist?list=PLhQjrBD2T382mHvZB-hSYWvoLzYQzT_Pb) original website
- 🚀 Practice [Game Development | CS50 2019 - Games Track](https://getvm.io/tutorials/cs50-2019-games-track) on GetVM
- 📖 Explore More [Free Resources on GetVM](https://getvm.io/explore)
Join our [Discord](https://discord.gg/XxKAAFWVNu) or tweet us [@GetVM](https://x.com/getvmio) ! 😄 | getvm |
1,913,866 | Inversão de Dependência com NestJS: Um Guia Detalhado | A inversão de dependência (Dependency Inversion Principle - DIP) é um dos cinco princípios SOLID,... | 0 | 2024-07-06T14:49:28 | https://dev.to/ranzinza/inversao-de-dependencia-com-nestjs-um-guia-detalhado-i9l | A inversão de dependência (Dependency Inversion Principle - DIP) é um dos cinco princípios SOLID, essenciais para a programação orientada a objetos. O DIP propõe que:
Módulos de alto nível não devem depender de módulos de baixo nível. Ambos devem depender de abstrações.
Abstrações não devem depender de detalhes. Detalhes devem depender de abstrações.
NestJS, um framework progressivo para Node.js, facilita a aplicação do DIP por meio de seu robusto sistema de injeção de dependência (Dependency Injection - DI). Vamos detalhar como implementar e aproveitar a inversão de dependência com NestJS.
Estrutura de um Projeto NestJS
Antes de entrarmos na inversão de dependência, é importante entender a estrutura básica de um projeto NestJS:
Módulos (Modules): Agrupam componentes relacionados, como controladores e serviços.
Controladores (Controllers): Gerenciam as rotas HTTP e são responsáveis por receber requisições e retornar respostas.
Serviços (Services): Contêm a lógica de negócio e são injetados nos controladores.
Passos para Implementar a Inversão de Dependência
1- **Criação da Interface (Abstração)**
Começamos criando uma interface que define os métodos que nosso serviço deve implementar. Isso assegura que nossas classes de implementação seguirão um contrato específico, promovendo o desacoplamento.
```typescript
// src/cats/interfaces/cat-service.interface.ts
export interface CatService {
findAll(): string[];
}
```
2- **Implementação da Interface**
Agora, implementamos a interface em uma classe concreta. Usamos o decorador @Injectable() para permitir que esta classe seja gerenciada pelo container de injeção de dependência do NestJS.
```typescript
// src/cats/services/cat.service.ts
import { Injectable } from '@nestjs/common';
import { CatService } from '../interfaces/cat-service.interface';
@Injectable()
export class CatServiceImpl implements CatService {
private readonly cats: string[] = ['Tom', 'Garfield'];
findAll(): string[] {
return this.cats;
}
}
```
3- **Registro do Serviço no Módulo**
Registramos o serviço no módulo correspondente. Isso permite que o container de injeção de dependência saiba como resolver a dependência quando necessário.
```typescript
// src/cats/cats.module.ts
import { Module } from '@nestjs/common';
import { CatServiceImpl } from './services/cat.service';
@Module({
providers: [
{
provide: 'CatService',
useClass: CatServiceImpl,
},
],
exports: ['CatService'],
})
export class CatsModule {}
```
4- **Injeção da Dependência no Controlador**
Injetamos o serviço no controlador, usando a interface como token de injeção. Isso permite que o controlador dependa da abstração em vez de uma implementação específica.
```typescript
// src/cats/controllers/cat.controller.ts
import { Controller, Get, Inject } from '@nestjs/common';
import { CatService } from '../interfaces/cat-service.interface';
@Controller('cats')
export class CatController {
constructor(@Inject('CatService') private readonly catService: CatService) {}
@Get()
findAll(): string[] {
return this.catService.findAll();
}
}
```
**Exemplos Avançados de Inversão de Dependência**
**Utilizando Fábricas de Provedores**
Às vezes, é necessário fornecer instâncias de serviços dinamicamente. Podemos usar fábricas de provedores (provider factories) para isso.
```typescript
// src/cats/providers/cat-service.factory.ts
import { CatService } from '../interfaces/cat-service.interface';
import { CatServiceImpl } from '../services/cat.service';
export const catServiceFactory = {
provide: 'CatService',
useFactory: (): CatService => {
return new CatServiceImpl();
},
};
```
**Serviços Assíncronos com Dependências Externas**
Para serviços que dependem de recursos assíncronos (como conexões de banco de dados), podemos configurar provedores assíncronos.
```typescript
// src/cats/providers/cat-service.async.ts
import { CatService } from '../interfaces/cat-service.interface';
import { CatServiceImpl } from '../services/cat.service';
export const asyncCatServiceProvider = {
provide: 'CatService',
useFactory: async (): Promise<CatService> => {
const connection = await createDatabaseConnection();
return new CatServiceImpl(connection);
},
};
```
**Testando Componentes com Inversão de Dependência**
A inversão de dependência facilita a criação de testes unitários, pois permite o uso de mocks para as dependências.
```typescript
// src/cats/controllers/cat.controller.spec.ts
import { Test, TestingModule } from '@nestjs/testing';
import { CatController } from './cat.controller';
import { CatService } from '../interfaces/cat-service.interface';
describe('CatController', () => {
let catController: CatController;
let catService: CatService;
beforeEach(async () => {
const module: TestingModule = await Test.createTestingModule({
controllers: [CatController],
providers: [
{
provide: 'CatService',
useValue: {
findAll: jest.fn().mockResolvedValue(['MockCat']),
},
},
],
}).compile();
catController = module.get<CatController>(CatController);
catService = module.get<CatService>('CatService');
});
it('should return an array of cats', async () => {
expect(await catController.findAll()).toEqual(['MockCat']);
});
});
```
**Benefícios da Inversão de Dependência**
1- **Flexibilidade e Testabilidade:**
Facilita a substituição de implementações concretas por mocks, especialmente útil em testes unitários.
2- **Desacoplamento:**
Reduz o acoplamento entre módulos, permitindo que sejam desenvolvidos, testados e mantidos de forma independente.
3- **Reutilização de Código:**
Facilita a reutilização de componentes, já que diferentes implementações podem ser facilmente intercambiáveis.
**Conclusão**
Implementar a inversão de dependência em NestJS não só melhora a qualidade e a manutenção do código, mas também promove práticas de desenvolvimento mais eficientes e escaláveis. Seguindo esses princípios, você pode criar sistemas mais robustos, testáveis e flexíveis, alinhados com as melhores práticas da engenharia de software.
Esses conceitos, quando aplicados corretamente, permitem que os desenvolvedores construam aplicações complexas de forma modular e sustentável, beneficiando-se de uma arquitetura sólida e bem definida. | ranzinza | |
1,913,887 | New to Community | Hye Folks, I'm Madhu Kumar V, Data/Business Analyst enthusiast Holding a MBA Degree in... | 0 | 2024-07-06T15:07:52 | https://dev.to/mkv_06/new-to-community-1e40 | programming, python, ai, productivity | ## **_Hye Folks,_**
I'm Madhu Kumar V, Data/Business Analyst enthusiast Holding a MBA Degree in Business Analytics. Currently working as Data & Risk Management Analyst at fintech company.
Looking forward to interact with Programming Folks and Data/ Business Analytics enthusiast here. | mkv_06 |
1,913,885 | Dịch Vụ Thiết Kế Website Theo Yêu Cầu Tại Terus | Trong thời đại số hóa ngày nay, việc sở hữu một website phù hợp là rất quan trọng đối với mỗi doanh... | 0 | 2024-07-06T15:01:53 | https://dev.to/terus_technique/dich-vu-thiet-ke-website-theo-yeu-cau-tai-terus-2d26 | website, digitalmarketing, seo, terus |
Trong thời đại số hóa ngày nay, việc sở hữu một website phù hợp là rất quan trọng đối với mỗi doanh nghiệp. Tuy nhiên, không phải ai cũng có đủ kiến thức và khả năng để [thiết kế website chuyên nghiệp và độc đáo](https://terusvn.com/thiet-ke-website-tai-hcm/) theo nhu cầu riêng của mình. Đây chính là lý do tại sao dịch vụ thiết kế website theo yêu cầu trở nên hết sức cần thiết.
Thiết kế website theo yêu cầu là một dịch vụ cho phép khách hàng tùy chỉnh và cá nhân hóa website của mình theo sở thích và nhu cầu cụ thể. Thay vì sử dụng các mẫu website sẵn có, dịch vụ này cho phép doanh nghiệp có được một website độc đáo, mang đậm dấu ấn riêng và phù hợp với chiến lược kinh doanh của họ.
Sử dụng dịch vụ thiết kế website theo yêu cầu mang lại nhiều lợi ích cho doanh nghiệp. Trước hết, nó cho phép doanh nghiệp có những thiết kế khác biệt và sáng tạo, thu hút sự chú ý của khách hàng tiềm năng. Hơn nữa, website được thiết kế theo yêu cầu sẽ bao gồm các tính năng và chức năng riêng biệt, phù hợp với hoạt động kinh doanh của doanh nghiệp. Cuối cùng, dịch vụ này còn giúp tiết kiệm chi phí so với việc phải tự thiết kế hoặc thuê các công ty thiết kế website khác.
Công ty Terus là một trong những đơn vị hàng đầu cung cấp dịch vụ thiết kế website theo yêu cầu tại Việt Nam. Với đội ngũ chuyên gia tài năng và kinh nghiệm phong phú, Terus cam kết sẽ đem đến cho khách hàng những giải pháp thiết kế website độc đáo, chuyên nghiệp và phù hợp với mọi nhu cầu kinh doanh.
Với kinh nghiệm nhiều năm trong lĩnh vực thiết kế website, cùng với đội ngũ chuyên gia nhiệt huyết, Terus tự tin sẽ mang đến cho khách hàng những giải pháp website hoàn hảo, phục vụ tối ưu mọi nhu cầu kinh doanh. Hãy liên hệ với Terus ngay hôm nay để được tư vấn và hỗ trợ [thiết kế website theo yêu cầu](https://terusvn.com/thiet-ke-website-tai-hcm/) của bạn.
Tìm hiểu thêm về [Dịch Vụ Thiết Kế Website Theo Yêu Cầu Tại Terus](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-theo-yeu-cau/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,877 | Dịch Vụ Thiết Kế Website Chuẩn Insight Khách Hàng Tại Terus | Website chuẩn Insight là một khái niệm mới, được Terus nghiên cứu và phát triển nhằm mang lại những... | 0 | 2024-07-06T14:53:29 | https://dev.to/terus_technique/dich-vu-thiet-ke-website-chuan-insight-khach-hang-tai-terus-4aj6 | website, digitalmarketing, seo, terus |
[Website chuẩn Insight](https://terusvn.com/thiet-ke-website-tai-hcm/) là một khái niệm mới, được Terus nghiên cứu và phát triển nhằm mang lại những giá trị vượt trội cho khách hàng. Khác với những website thông thường, website chuẩn Insight được thiết kế dựa trên chuẩn mực "Insight" - một phương pháp tiếp cận toàn diện, tập trung vào nhu cầu và hành vi của khách hàng.
Sở hữu một website chuẩn Insight mang lại nhiều lợi ích cho doanh nghiệp của bạn:
Khả năng hiển thị nâng cao: Nhờ tuân thủ các tiêu chuẩn về SEO, website chuẩn Insight sẽ có thứ hạng cao trên các công cụ tìm kiếm, giúp tăng khả năng tiếp cận của người dùng.
Tăng lưu lượng truy cập miễn phí: Việc cải thiện khả năng hiển thị sẽ dẫn đến lượng truy cập tự nhiên tăng lên, giúp doanh nghiệp tiết kiệm chi phí quảng cáo.
Trải nghiệm người dùng tốt hơn: Giao diện thân thiện, dễ sử dụng cùng các tính năng hiện đại sẽ mang lại trải nghiệm tuyệt vời cho khách hàng, từ đó tăng độ tin cậy và gắn kết với thương hiệu.
Tỷ lệ chuyển đổi cao hơn: Nhờ thiết kế dựa trên chuẩn Insight, website sẽ dễ dàng thu hút, tiếp cận và chuyển đổi khách hàng tiềm năng thành khách hàng thực sự.
Lợi thế cạnh tranh: Sở hữu một website chuẩn Insight sẽ giúp doanh nghiệp của bạn nổi trội so với các đối thủ, tạo ra sự khác biệt trong mắt khách hàng.
ROI dài hạn: Với những lợi ích thiết thực mà website chuẩn Insight mang lại, doanh nghiệp sẽ đạt được hiệu quả đầu tư tốt hơn trong dài hạn.
Hiệu quả về chi phí: So với các website truyền thống, việc thiết kế website chuẩn Insight có thể tiết kiệm đến 30-50% chi phí cho doanh nghiệp.
Terus tự hào là đơn vị đầu tiên mang website chuẩn Insight đến Việt Nam. Chúng tôi cam kết mang lại những lợi ích thiết thực sau khi doanh nghiệp của bạn sở hữu website chuẩn Insight:
Xây dựng website chuẩn sale funnel: Terus sẽ thiết kế website theo mô hình sale funnel hiệu quả, giúp khách hàng dễ dàng di chuyển từ giai đoạn tìm hiểu đến giai đoạn mua hàng.
Tăng số lượng sản phẩm bán ra, tăng doanh thu: Nhờ các tính năng và giao diện được tối ưu hóa, website chuẩn Insight sẽ giúp tăng đáng kể doanh số bán hàng.
Xây dựng hình ảnh đáng tin cậy, chuyên nghiệp: Với thiết kế chuyên nghiệp, website chuẩn Insight sẽ góp phần nâng cao giá trị thương hiệu, tạo ấn tượng tốt đẹp trong mắt khách hàng.
Với đội ngũ chuyên gia nhiều kinh nghiệm, Terus cam kết mang lại cho doanh nghiệp của bạn một sản phẩm [thiết kế website chuẩn Insight hoàn hảo](https://terusvn.com/thiet-ke-website-tai-hcm/), góp phần thúc đẩy sự tăng trưởng và phát triển bền vững trong tương lai.
Hãy liên hệ với Terus ngay hôm nay để được tư vấn miễn phí và bắt đầu hành trình số hóa doanh nghiệp của mình!
Tìm hiểu thêm về [Dịch Vụ Thiết Kế Website Chuẩn Insight Khách Hàng Tại Terus](https://terusvn.com/thiet-ke-website/thiet-ke-website-chuan-insight/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,876 | Exploring Mobile Development Platforms and Software Architecture Patterns | Mobile development a peculiar and dynamic landscape, choosing one platform along with its associated... | 0 | 2024-07-06T14:52:36 | https://dev.to/chiamaka_eriobu_2fbccd765/exploring-mobile-development-platforms-and-software-architecture-patterns-mfn | beginners, mobile |
Mobile development a peculiar and dynamic landscape, choosing one platform along with its associated software architecture is itself confusing. I have begun my HNG Internship and I believe it is a good time to revisit these basics about mobile development. In this essay, we will discuss many common software architecture patterns and mobile development platforms exploring about their advantages & disadvantages.
Mobile app development platforms are generally of 2 types:
• **Native app development platforms:** These platforms enable developers to maximize performance, take advantage of platform-specific features and deliver a more consistent user experience across devices by developing apps for a particular mobile operating system (such as iOS or Android). Although it might consume more time and require additional resources than cross-platform development does, it often results into better polished applications which work not just well but greatly on the intended platform. Examples of the platform-specific languages are **swift/objective-C** for **IOS** and **Kotlin/JAVA** for **Android**.
**Pros**:
**Performance**: Platform-specific languages and tools are used in building native applications so that they can be optimized for the best possible performance on their respective devices and thus provide the best performance as well as responsiveness.
**User Experience**: Using the best UI/UX practices for every platform, native apps make it very simple for persons to find their way through them and connect with them which eventually increases users’ contentment.
**Offline functionality**: Since native apps are loaded on the device itself, they can work even if there’s no internet connection, which can be a huge plus for offline-capable apps.
**Access to features**: Native apps have full access to device hardware and OS-specific features.
**Cons**:
**Cost**: Regardless of whether development is done natively or otherwise, it is never cheap. The cost of developing a mobile app depends on how complex the app is, which includes how many platforms one wants to support and whether one wants to use native or cross-platform technologies.
**Development time**: Creating a native app is a much more complex job than developing a hybrid or a cross-platform application. Your goal is to decide what platform or platforms this program should run on and write it from scratch, using programming language and tools peculiar for each specific platform. Separate codes are required for each of them – iOS and Android.
• **Cross-Platform Development**: These platforms are a used way by developers to give a chance to make apps whose presence will be felt on different mobile operating systems from a single codebase. Companies may find this essence quite important in terms of reaching out to more people without necessarily creating individual apps for each platform. Examples of such languages are **React Native** developed by Facebook that uses React and JavaScript to build apps for both IOS and Android. Another example is **Flutter** which is developed by android it uses the dart programming language and has a rich set of widgets. Other examples are Node.js, Xamarin, Ionic and so on.
**Pros**:
**Single codebase**: One and the same code designated for numerous platforms suggests that the developer will only be required to write it once but run on IOS and Android at the same time. In place of building separate platform-specific apps, developers will find that it allows them faster development by removing repetitive coding chores.
**Cost-effective**: The team uses the same tools in cross-platform framework, which makes it cheaper and easier to build two apps at the same time. In addition, the development costs can be reduced by at least half when one smaller team is needed to create an application that works on all devices owned by users.
**Community support**: Cross-platform frameworks has a large and active community which is effective for troubleshooting and enhancements.
**Cons**:
**UI/UX design quality**: Developers are restricted in the app features they can access through cross-platform app development using a common codebase for both platforms. If unable to use every function on a smartphone or tablet computer then end-users might find the performance less satisfactory.
**Performance**: Not always as smooth as native apps.
**Access to Features**: Access to features is sometimes limited compared to native.
**Software Architecture Patterns: Building the Backbone**
Now, onto the software architecture patterns that help structure our apps. Here are a few common ones:
1. **Model-View-Controller (MVC):** A software design pattern that is commonly used when developing user interfaces to divide the related program logic into three interconnected elements is the model-view-controller (MVC) pattern. It consists of these elements:
o **Model**: Manages the data and business logic.
o **View:** Handles the display and user interface.
o **Controller**: Interacts between the Model and View.
**Pros**:
o **Separation of Concerns**: Clear division of responsibilities.
o **Modularity**: Easier to manage and scale.
**Cons**:
o **Complexity**: Can get complex as the app grows.
o **Testing**: Tight coupling can make unit testing difficult.
2. **Model-View-ViewModel (MVVM)**: This is an architectural pattern in computer software that allows for the separation of developing a graphical user interface (GUI; View) through a markup language or GUI code from developing business logic or back-end logic (Model) whereby the view does not depend on specific model platform.
o **Model**: Data and business logic.
o **View**: UI elements.
o **ViewModel**: Manages the data for the View and handles user interactions.
**Pros**:
o **Separation of Concerns**: Better separation than MVC.
o **Testing**: Easier to test the ViewModel.
**Cons**:
o **Learning Curve:** Can be difficult to grasp initially.
o **Boilerplate Code**: Sometimes requires extra code.
**My Journey with HNG Internship**
So, why am I diving into this with the HNG Internship? For me, this internship is a chance to grow both personally and professionally. Though I just started learning mobile development I am quite passionate about it and I would like to gain more experience from like-minded individuals. Through the mentorship from experience developers and hands on experience to tackle real life challenges, I’m sure I’ll make massive improvements by the end of the program.
In conclusion, the world of mobile development is vast and fascinating, with various platforms and architecture patterns to explore. Each has its pros and cons, and the choice often depends on the specific needs of the project. As I embark on this journey with HNG Internship, I’m eager to dive deeper into these topics, learn from the experts, and create amazing mobile applications. Here’s to the exciting road ahead!
https://hng.tech/hire
https://hng.tech/internship
| chiamaka_eriobu_2fbccd765 |
1,913,867 | HiTechLab,in,Tamilnadu,Schools | தமிழ்நாட்டு அரசுஉயர்/மேல்நிலைப் பள்ளிகளில் 5 ஆண்டிற்கு முன் HiTech lab ஒன்று தொடங்கப்பட்டது அனைவரும்... | 0 | 2024-07-06T14:35:54 | https://dev.to/baskaran_v_68c0b143bb1d87/hitechlab-37ie | தமிழ்நாட்டு அரசுஉயர்/மேல்நிலைப் பள்ளிகளில் 5 ஆண்டிற்கு முன் HiTech lab ஒன்று தொடங்கப்பட்டது அனைவரும் அறிந்ததே.அதில் ஒரு Server 10/20 thin client இருக்கும்.அதை எப்படி பயன்படுத்துவது என்று இதுவரைக்கும் பெரும்பாலான ஆசிரியர்களுக்கோ அல்லது அலுவலக பணியாளர்களுக்கோ தெரியாது.ஏனெனில் windows இல் பழகி விட்டு Linux Boss OS ஐ எப்படி செயல்படுவது என்றே தெரியாமல் இருக்கிறது.உதாரணத்திற்கு chrome browser ஐ அதில் எப்படி install செய்வதென்றே தெரியவில்லை.இந்த நிலையில் என்னுடைய Facebook timeline இல் Python language கற்றுக்கொள்ள ஒரு வாய்ப்பு என பதிவுகள் தென்பட்டன.நானும் குறிப்பிட்ட WhatsApp குழுவில் இணைந்தபோது Linux என்பது பல்வேறு வகைகளில் இலவச மற்றும் பிரத்யேக பயன்பாட்டுக்கு ஏற்ற ஒரு OS என தெரியவருகிறது.இனிமேல் தான் அந்த WhatsApp குழுவின் வழிகாட்டுதலின் படி செயல்பட்டு தேங்கி கிடக்கும் Hi tech lab பயன்பாட்டை அதிகரிக்க முடியும் என்ற நம்பிக்கை ஏற்பட்டு உள்ளது.நன்றி | baskaran_v_68c0b143bb1d87 | |
1,913,875 | Deploy your own project management app on Vercel and Render without coding skills and especially, it's free. | Hi everyone, It's Hudy again Today, I just released the deployment guide for Namviek on youtube. So,... | 0 | 2024-07-06T14:49:26 | https://dev.to/hudy9x/deploy-your-own-project-management-app-on-vercel-and-render-without-coding-skills-and-especially-its-free-1hea | nextjs, node, opensource, vercel | Hi everyone, It's Hudy again
Today, I just released the deployment guide for Namviek on youtube. So, if someone who need to deploy my app to run their team please check out the link below
{% embed https://www.youtube.com/embed/Pql94kF--4s?si=chMrQLf5baGYIJuC %}
For those who would like to scroll for fast, use this post intead.
## Preparation
In order to deploy `namviek` to Vercel and Render we need to prepare accounts on the following services
- [Redis](https://redis.io/) - for caching
- [Mongodb Atlas](https://account.mongodb.com/account/login?nds=true) - for database
- Github Account - store the codebase
- [Firestore](https://firebase.google.com/) - for Gmail authentication
- [Vercel](https://vercel.com) - for frontend
- [Render](https://render.com) - for backend
## Deployment process
The deployment progress will implemented in 5 steps. That's a lot of steps for a deployment tasks I know. However, you need no coding skills for these step. Just copy and paste some configurations and follows exactly what I do.
### 1. Create Redis database
So, the first thing we need to do is that create Redis database. Please go to [use Redis cloud](https://docs.namviek.com/doc/use-redis-cloud) section and follow my instruction. The result of this step is you must to get the redis connection string as follow
```txt
REDIS_HOST=redis://default:ck7VLUkNQ*************GWeD@redis-18732.a293.ap-southeast-1-1.ec2.redns.redis-cloud.com:11077
```
### 2. Create database on Mongodb Atlas
Next, navigate to [Mongodb Atlas](https://account.mongodb.com/account/login) and create your own database as the following [instruction](https://docs.namviek.com/doc/installation#create-mongodb-atlas-database). After completing this process you will obtain the mongodb connection string in the following format.
```txt
MONGODB_URL=mongodb+srv://{user}:{pwd}@cluster0.weszq.mongodb.net/{dbName}?retryWrites=true&w=majority
```
If you want to secure your connection by restricting a specified Ip address, please visit [MongoDb Network Access](https://docs.namviek.com/doc/mongodb-network-access)
### 3. Deploy backend to Render
Now, it's time to deploy backend to Render. Open a new tab and visit [Render.com](https://render.com). Sign up a new account and just leave it. Go to my [repo](https://github.com/hudy9x/namviek?tab=readme-ov-file#deploy) and click on the __Deploy to Render__ button.
You will be redirect to the deployment page as following. Fill your `Blueprint Name` and environment variables.
The env values should be like the below example.
```txt
JWT_REFRESH_KEY=287kjshkjshdf
JWT_SECRET_KEY=12981KJ1H23KJH
JWT_REFRESH_EXPIRED=4h
JWT_TOKEN_EXPIRED=30m
JWT_VERIFY_USER_LINK_TOKEN_EXPIRED=1h
NEXT_PUBLIC_FE_GATEWAY=https://test/v2/234234/clusters
MONGODB_URL=mongodb+srv://<user>:<pass>@cluster0.bswhjt.mongodb.net/demodb?retryWrites=true&w=majority
REDIS_HOST=redis://<user>:<pass>@redis-48362.c345.ap-southeast-1-1.ec2.redns.redis-cloud.com:19729
```
> `MONGODB_URL` and `REDIS_HOST` are important variables. So please input them exactly. The others are up to you.
Click on the `Apply` button to start deploying.
Wait for Render deploy the app. If nothing wrong the output should look like below. Don't worry about the red line through
#### Verify Render deployment process
Right after Render finishs the deployment process we have to verify it whether success or not. Head to __Mongodb Atlas__ > __Database__ > __Cluster__ > __Collections__. And find your database that you've created earlier. If you see a list of collections as the image below then congrats you succeeded.
### 4. Deploy frontend to Vercel
Well, the last thing to run `namviek` is to deploy the frontend to Vercel. This will be quick i promise :D.
Open your browser and go to my [repo](https://github.com/hudy9x/namviek?tab=readme-ov-file#deploy) and click on the `Vercel deploy` button. It will navigate you to the deploy page. Give it a name and press `Create` button. Then fill environment variables and press `Deploy` button.
If you don't find the `NEXT_PUBLIC_BE_GATEWAY` please go to __Render.com__ and navigate to service's setting. You'll see the domain
At last, if you're lucky the below screen will be displayed that means the deployment is success. LOL
### 5. Integrate Gmail authentication
Follow my instruction [here](https://docs.namviek.com/doc/gmail-auth) to integrate Gmail authentication
## Conclusion
Hope you found something helpful in this post. If you got any issues, please create an PR or go to my Discord server for help. Thank for reading.
| hudy9x |
1,913,873 | Implementing Composition Pattern in React Applications with RadixSlot | Introduction In the development of React applications, component composition is a powerful... | 0 | 2024-07-06T14:44:28 | https://dev.to/nayane_menezes_e70c72b54/implementing-composition-pattern-in-react-applications-with-radixslot-2d6n | ### Introduction
In the development of React applications, component composition is a powerful technique that promotes code reuse, flexibility, and simplified maintenance. The Composition Pattern is an approach that allows the creation of complex components from smaller and simpler ones. This pattern addresses common issues such as code duplication and monolithic component complexity, making state management and data passing between components easier.
RadixSlot is a utility from the Radix UI library that provides an elegant solution for creating flexible and composable components. By using RadixSlot, you can create components that are more predictable and easier to maintain, ensuring that the composition pattern is applied effectively. One of the powerful features of RadixSlot is the `asChild` prop, which allows you to use a custom component as a child, providing even greater flexibility.
### What is the Composition Pattern?
The Composition Pattern is a technique where you compose complex components from smaller, reusable components. Instead of inheriting functionalities from a parent component, components are combined to create more sophisticated behaviors. This approach is highly encouraged in React, as it aligns with its philosophy of building user interfaces from small, independent components.
### Why Use RadixSlot?
RadixSlot allows you to define "slots" in your components where other components or elements can be injected. This makes your components more flexible and customizable. Using RadixSlot with the Composition Pattern helps in:
- **Enforcing Structure**: Ensures that components are used in the intended structure, preventing misuse.
- **Flexibility**: Allows different components to be slotted in without changing the parent component's implementation.
- **Ease of Maintenance**: Makes it easier to manage and update the components as the structure is clearly defined.
- **Custom Components**: The `asChild` prop allows you to pass custom components, making your slots even more flexible.
### How to Use RadixSlot in React
To illustrate the use of RadixSlot, let's create a practical example in React using TypeScript.
#### Practical Example
We'll create a `Card` component that can be composed of several parts: `Card.Header`, `Card.Description`, and `Card.Actions`. We'll also demonstrate the `asChild` prop feature.
#### Step 1: Install Radix UI
First, install the Radix UI library.
```bash
npm install @radix-ui/react-slot
```
#### Step 2: Create the Main `Card` Component
```tsx
import React from 'react';
import { Slot } from '@radix-ui/react-slot';
type CardProps = React.HTMLAttributes<HTMLDivElement> & {
children: React.ReactNode;
}
const Card = ({ children, ...props }: CardProps) => {
return <div className="card" {...props}>{children}</div>;
};
export default Card;
```
#### Step 3: Create the Child Components Using RadixSlot with `asChild`
Let's create the child components that will be used inside the `Card` and include the `asChild` prop.
```tsx
import { Slot } from '@radix-ui/react-slot';
type CardHeaderProps = HTMLAttributes<HTMLDivElement> & {
asChild?: boolean;
children: React.ReactNode
};
const CardHeader: React.FC<CardHeaderProps> = ({ children, asChild, ...props }: CardHeaderProps) => {
const Component = asChild ? Slot : 'div';
return (
<Component {...props} className="card-header">
{children}
</Component>
);
};
type CardDescriptionProps = HTMLAttributes<HTMLParagraphElement> & {
children: React.ReactNode;
asChild?: boolean;
}
const CardDescription: React.FC<CardDescriptionProps> = ({ children, asChild, ...props } : CardDescription) => {
const Component = asChild ? Slot : 'p';
return (
<Component {...props} className="card-description">
{children}
</Component>
);
};
type CardActionsProps = React.HtmlHTMLAttributes<HTMLButtonElement> & {
children: React.ReactNode;
}
const CardActions: React.FC<CardActionsProps> = ({ children }) => {
const Component = asChild ? Slot : 'button';
return (
<Component {...props} className="card-actions">
{children}
</Component>
);
};
```
#### Step 4: Compose the `Card` with the Child Components
Now we will associate these child components with the main `Card` component to create a composition structure.
```tsx
const Card = {
Root: Card,
Header: CardHeader,
Description: CardDescription,
Actions: CardActions,
};
export default Card;
```
#### Step 5: Use the Composed `Card` in a Practical Example
Now we can use the composed `Card` in our application and leverage the `asChild` prop to pass custom components.
```tsx
const App = () => {
return (
<div className="app">
<Card>
<Card.Header>
<h2>Card Title</h2>
</Card.Header>
<Card.Description>
This is the description of the card.
</Card.Description>
{/*if asChild is set to true, the component renders its
child content instead of its own element. If asChild is
set to false, the component renders its default element
(p).*/}
<Card.Description asChild>
<span>This is the description of the span.</span>
</Card.Description>
<Card.Actions>
Action 1
</Card.Actions>
</Card>
</div>
);
};
export default App;
```
### Conclusion
The Composition Pattern is an essential technique for developing scalable and maintainable React applications. By composing components from smaller, reusable units, you can create flexible and efficient user interfaces. RadixSlot enhances this pattern by providing a clear structure and increasing the flexibility of your components. The `asChild` prop further enhances flexibility by allowing custom components to be passed into slots, making your components even more adaptable. This approach not only promotes code reuse but also simplifies the maintenance and continuous evolution of your application. Adopting RadixSlot and the `asChild` prop in your React projects is a significant step towards becoming a more efficient and productive developer. | nayane_menezes_e70c72b54 | |
1,913,872 | JavaScript app security audit | A JavaScript app security audit is a comprehensive review of your JavaScript code and its... | 0 | 2024-07-06T14:43:53 | https://dev.to/solitary-polymath/javascript-app-security-audit-4dnn | javascript, security, webdev, beginners | A JavaScript app security audit is a comprehensive review of your JavaScript code and its dependencies to identify potential vulnerabilities and security flaws. It's crucial for protecting user data, preventing unauthorized access, and ensuring the overall integrity of your application.
Here's a breakdown of the key aspects of a JavaScript app security audit:
---
## 1. Vulnerability Scanning
...
### Automated Tools:
- Use tools like Snyk, Retire.js, or OWASP ZAP to scan your codebase for known vulnerabilities in JavaScript libraries, frameworks, and dependencies.
### Manual Review:
- Conduct a manual review of critical sections of your code, focusing on areas like input validation, data handling, and authentication.
---
## 2. Common Vulnerabilities to Look For
...
### Cross-Site Scripting (XSS):
- This occurs when an attacker injects malicious code into your application, which is then executed in the user's browser.
### Cross-Site Request Forgery (CSRF):
- This occurs when an attacker tricks a user into performing an unwanted action on your website.
### Insecure Data Storage:
- Ensure sensitive data is encrypted both in transit and at rest. Avoid storing sensitive data in the browser's local storage or cookies.
### Insecure Authentication and Authorization:
- Review your authentication and authorization mechanisms to ensure that only authorized users can access specific functionalities.
### Server-Side JavaScript Injection (SSJI):
- If using Node.js or other server-side JavaScript frameworks, look for vulnerabilities like code injection and insecure deserialization.
---
## 3. Best Practices to Follow
...
### Input Validation:
- Sanitize and validate all user inputs to prevent injection attacks.
### Output Encoding:
- Encode data before displaying it to the user to prevent XSS vulnerabilities.
### Use Content Security Policy (CSP):
- Implement CSP headers to mitigate XSS attacks by defining trusted sources for content loading.
### Subresource Integrity (SRI):
- Use SRI to ensure the integrity of third-party scripts and stylesheets used in your application.
### Secure Cookie Management:
- Set appropriate flags like HttpOnly and Secure for cookies containing sensitive data.
### Regular Updates:
- Keep your dependencies (libraries, frameworks) updated to their latest versions to benefit from security patches.
---
## 4. Reporting and Remediation
...
### Generate a Detailed Report:
- Document all identified vulnerabilities, their severity, and potential impact.
### Prioritize Remediation:
- Start by fixing critical vulnerabilities first, and create a plan to address all issues.
### Continuous Monitoring:
- Implement a process for continuous security testing and monitoring to identify and address new vulnerabilities promptly.
---
Remember that a JavaScript app security audit is not a one-time event. It's crucial to integrate security practices throughout the software development lifecycle to build and maintain secure applications.
 | solitary-polymath |
1,913,871 | Các Dịch Vụ Thiết Kế Website Đa Dạng Lĩnh Vực Tại Terus | Ngày nay, website không còn là thuật quá xa lạ đối với tất cả mọi người, đặc biệt là đối với những... | 0 | 2024-07-06T14:43:27 | https://dev.to/terus_technique/cac-dich-vu-thiet-ke-website-da-dang-linh-vuc-tai-terus-9d5 | website, digitalmarketing, seo, terus |
Ngày nay, website không còn là thuật quá xa lạ đối với tất cả mọi người, đặc biệt là đối với những cá nhân, doanh nghiệp. Thị trường kinh doanh online dường như sôi động hơn bao giờ hết trong khoảng trước, sau khi đại dịch COVID-19 và cho đến nay. Khi mà khoảng cách địa lý không còn là vấn đề nan giải trên thị thường kinh doanh trực tuyến này.
Tuy nhiên, sẽ không dễ dàng gì tìm được một đơn vị cung cấp dịch vụ thiết kế website chuyên nghiệp, đa dạng các lĩnh vực lẫn phong cách thiết kế. Nếu bạn cũng gặp những khó khăn như thế, thì Terus chính là “định mệnh” của bạn, là một đơn vị cung cấp các dịch vụ như dịch vụ thiết kế website theo yêu cầu, dịch vụ thiết kế website chuẩn Insight, dịch vụ thiết kế website đa dạng các ngành nghề và lĩnh vực,…
Dịch vụ thiết kế website theo yêu cầu
Terus đem tới [dịch vụ thiết kế website theo yêu cầu](https://terusvn.com/thiet-ke-website-tai-hcm/) hoàn toàn khác biệt cho khách hàng. Với việc tập trung vào chất lượng dịch vụ, luôn muốn đem tới thật nhiều những lợi ích cho khách hàng.
Thiết kế website theo yêu cầu là hình thức mà bạn chỉ cần đưa ra những ý tưởng và mong muốn của mình, Terus sẽ cùng bạn thực hiện hóa những ý tưởng đó. Thiết kế website theo yêu cầu mang lại cho bạn một website có tính linh hoạt cao, độc đáo, tối ưu các chức năng cũng như trải nghiệm sử dụng cho đối tượng người dùng của doanh nghiệp.
Dịch vụ thiết kế website chuẩn Insight
Bạn đã bao giờ nghe tới website chuẩn Insight chưa? Website chuẩn Insight được đội ngũ kỹ sư của Terus nghiên cứu và phát triển. Đảm bảo rằng chúng tôi là đơn vị đầu tiên đem Website chuẩn Insight về đến Việt Nam.
Dịch vụ thiết kế website chuẩn Insight là hình thức thiết kế thể hiện sự khác biệt của công ty bạn so với đối thủ thông qua sự chỉn chu về mặt hình ảnh kết hợp với quy trình bán hàng chuẩn sale funnel được thiết kế riêng dành cho doanh nghiệp bạn.
Dịch vụ thiết kế website các ngành nghề, lĩnh vực
Với thời kỳ chuyển đổi số đang trở nên mạnh mẽ, nếu bạn chưa sở hữu website hay website hiện tại kém chất lượng là một thiếu sót vô cùng lớn. Ở bất kỳ ngành nghề hay lĩnh vực, nếu bạn chưa có website thì bạn đã bỏ lỡ những cơ hội để tiếp cận các khách hàng tiềm năng mới.
Chính vì thế mà điều bạn cần làm ngay bây giờ là [thiết kế website ngành nghề](https://terusvn.com/thiet-ke-website-tai-hcm/) với quy trình và trải nghiệm mua hàng đơn giản, tiện lợi, chính là một yếu tố quan trọng để bạn “chốt đơn” với khách hàng thêm dễ dàng.
Tìm hiểu thêm về [Các Dịch Vụ Thiết Kế Website Đa Dạng Lĩnh Vực Tại Terus](https://terusvn.com/thiet-ke-website/cac-dich-vu-thiet-ke-website-da-dang/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,870 | Boost Your Development Projects with Quality Content from Wordsmithh | Sure, here's a post for a dev website using the link to Wor In the fast-paced world of web... | 0 | 2024-07-06T14:43:13 | https://dev.to/akankshaa_gt/boost-your-development-projects-with-quality-content-from-wordsmithh-p3n | contentwriting, socialmediacontent, copywriting, webdev | Sure, here's a post for a dev website using the link to Wor
In the fast-paced world of web development, having high-quality content is essential to engaging your audience and driving success. That's where Wordsmithh comes in. As a leading [content writing agency](https://wordsmithh.com/), we specialize in crafting compelling, SEO-optimized content tailored to your unique needs.
From detailed technical articles and engaging blog posts to user-friendly website content and persuasive copywriting, Wordsmithh has the expertise to elevate your development projects. Our team of skilled writers ensures that your content not only resonates with your target audience but also enhances your online presence and boosts your search engine rankings.
Discover how Wordsmithh can transform your content strategy and take your development projects to the next level. Visit [Wordsmithh](https://wordsmithh.com/) today and unlock the power of words. | akankshaa_gt |
1,913,822 | Apple Website | Learning how to create an Engaging Apple Product Showcase with TailwindCSS, GSAP, and... | 0 | 2024-07-06T14:31:56 | https://dev.to/sudhanshuambastha/apple-website-4kgn | threejs, react, tailwindcss, gsap | ## Learning how to create an Engaging Apple Product Showcase with TailwindCSS, GSAP, and Three.js
In the realm of web development, creating visually stunning and interactive websites has become a hallmark of innovation and creativity. If you are looking to elevate your skillset and captivate users with a state-of-the-art Apple product showcase, then this step-by-step guide is tailor-made for you.
By harnessing the power of **TailwindCSS**, **GSAP**, and **Three.js**, you can embark on a journey to craft a modern and sleek website that showcases the latest Apple products with dynamic animations and immersive 3D models. Whether you are a seasoned developer or a budding enthusiast
**Technologies Used:**
[](https://skillicons.dev)
- TailwindCSS: A versatile utility-first CSS framework that streamlines the styling process and offers a plethora of pre-built components for seamless design implementation.
- GSAP: An exceptional JavaScript animation library that empowers developers to create fluid and engaging animations with ease, enhancing the user experience and visual appeal of the website.
- Three.js: A widely acclaimed 3D library that simplifies the integration of WebGL technology, enabling the creation of captivating 3D graphics and immersive visual effects.
For a hands-on experience and to explore the intricacies of this project, you can access the GitHub repository via the following link: [Apple Website](https://github.com/Sudhanshu-Ambastha/Apple-Website).
Despite the project garnering **2 stars**, **14 clones**, and **429 views**, it is important to underscore the significance of acknowledging and appreciating the efforts of fellow developers. As a community built on collaboration and shared learning, your support through stars and constructive feedback not only motivates creators but also fosters a culture of respect and recognition within the development ecosystem.
In conclusion, as you immerse yourself in the process of building a visually captivating Apple product showcase, remember to embrace the ethos of originality and creativity while also acknowledging the contributions of others. Let us continue to inspire, elevate, and propel the world of web development forward together. Your feedback and queries are welcomed in the comments section, fostering a dialogue that enriches our collective knowledge and passion for coding excellence. | sudhanshuambastha |
1,913,865 | Các Xu Hướng Thiết Kế Website Hiện Tại | Để không bị lỗi thời, bạn phải luôn cập nhật các thông tin này vì công nghệ và xu hướng thiết kế... | 0 | 2024-07-06T14:31:18 | https://dev.to/terus_technique/cac-xu-huong-thiet-ke-website-hien-tai-34jd | website, digitalmarketing, seo, terus |
Để không bị lỗi thời, bạn phải luôn cập nhật các thông tin này vì công nghệ và xu hướng thiết kế website luôn thay đổi. Mỗi năm, xu hướng thiết kế website đều thay đổi rất nhiều, đặc biệt là đối với website dành cho doanh nghiệp của bạn.
Bất kỳ doanh nghiệp nào muốn tiếp tục vượt qua đối thủ cạnh tranh và thu hút tất cả khách hàng của mình cũng nên chú ý đến những xu hướng thiết kế website này.
Các xu hướng [thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) hiện nay thay đổi hàng năm cùng với sự phát triển mạnh mẽ của công nghệ. Để đảm bảo rằng các website không trở nên lỗi thời và mang lại những trải nghiệm người dùng thú vị và hấp dẫn hơn, các công ty và nhà thiết kế phải luôn cập nhật và bắt kịp các xu hướng thiết kế mới nhất. Terus sẽ đưa ra các xu hướng thiết kế đang "hot" hiện nay:
1. Công nghệ trí tuệ nhân tạo (AI)
2. Ứng dụng công nghệ thực tế ảo (VR) vào thiết kế website
3. Mobile first – Đầu tư vào giao diện Mobile
4. Xu hướng thiết kế website với hình ảnh có chiều sâu
5. Xu hướng thiết kế website với hệ màu sắc đa dạng, sinh động
6. Xu hướng thiết kế website với hiệu ứng động cho background
7. Xu hướng thiết kế website mới nhất dùng ảnh đồ họa là chính
8. Xu hướng thiết kế website hiện nay sẽ tận dụng triệt để nghệ thuật typography
9. Phong cách bố cục mới cho website
10. Tích hợp ảnh động (animations)
11. Các menu điều hướng nổi bật
Các xu hướng [thiết kế website nổi bật](https://terusvn.com/thiet-ke-website-tai-hcm/) dự kiến sẽ thống trị trong năm 2024, từ ứng dụng công nghệ mới như AI, VR đến các yếu tố thiết kế như hình ảnh, màu sắc, typography, layout và tương tác. Những thông tin này sẽ giúp các nhà thiết kế và doanh nghiệp định hướng được xu hướng thiết kế website phù hợp với nhu cầu, mục tiêu của mình.
Tìm hiểu thêm về [Các Xu Hướng Thiết Kế Website Hiện Tại](https://terusvn.com/thiet-ke-website/cac-xu-huong-thiet-ke-website/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,864 | The Benefits of Online Golf Shopping: Why It's So Convenient | Golf can be described as a sport that focuses on accuracy, repetition, and proper equipment. To many,... | 0 | 2024-07-06T14:29:28 | https://dev.to/jenna_jsmith_7c60b6e65d/the-benefits-of-online-golf-shopping-why-its-so-convenient-47b2 | Golf can be described as a sport that focuses on accuracy, repetition, and proper equipment. To many, the best equipment could only be obtained from a physical store, where hours are spent comparing products and seeking advice from staff. However, the mode of shopping has changed drastically with the introduction of online shopping. The opportunities that the Internet provides for shopping for golf equipment are numerous, which contributes to the fact that this option is rather popular among amateurs as well as professional golf players.
**Wide Selection of Products **
An online store can provide a client with as many golf clubs, balls, T-shirts, socks, and accessories as he or she can only dream of if the store were a brick-and-mortar one. Today, anything, from the newest driver by the leading brands to a particular style of golf ball you need, can be bought online.
Among the advantages of online stores is the wider variety of sizes, colours, and models compared to offline ones. This means that you can find something that meets your requirements for the letter without any necessity for compromise. Also, numerous online shops offer clear descriptions of products, buyers’ reviews, and comparison tools that will only assist in making the ultimate choice.
**Access to Customer Reviews and Expert Advice**
It is hard to overestimate the advantages of purchasing golf equipment online, such as the availability of customer reviews and professional recommendations. Most online shops have customer feedback platforms that give practical information about the products' performance. Such reviews are useful when making an informed buying decision.
Also, there is customer feedback, and often, in the stores that sell golf equipment, there are special blogs, buying guides, and even instructional videos with tips from professionals. It is always useful to gather as much information as possible to make the right choices, taking into account all subtle features of products. Many web resources also include live chat; thus, you can get instant answers to your questions from real professionals.
**Competitive Pricing and Deals **
Since there are many online golf stores, the buyer is likely to find cheaper prices and exclusive offers that the physical stores cannot offer. They were of the view that because the rates online retailers have comparatively low overhead costs, they are able to offer their products at a lower price. Also, a vast number of online shops tend to set up normal sale offers, lower prices, and specials, which will help the client identify good quality golfing equipment at reduced costs.
Another large advantage of online shopping is that comparisons in terms of price are also effortless. Select this by going through several of the sellers and checking on the price of the same product to determine if you are getting the right deal. For instance, many websites also provide price matching, which means that you will be sure that you are actually paying the least amount you can.
**Easy Returns and Exchanges **
Many people avoid shopping online because of the issue of returns and exchanges, but almost all online stores for golf products have made the process as easy as possible. It is common for almost all decent online stores to afford a very simple return and exchange policy, so one can always return products that they don’t like or do not fit.
Some stores even provide bar codes for the shipping labels to facilitate returns. Read the return policy of the store you intend to patronize to avoid being surprised by one or more of the conditions.
Access to Specialized Products and Customization
A large variety of specialized equipment and accessories or customization that are not easily available in a local market can be shopped online for golf. In general, you stand a better chance of finding clubs tailored to your specific needs, golf balls with your name on them, or any related accessories on the Internet.
You can order individual equipment oriented to your requirements in specific online stores that offer customization services; such personalization can go a long way in improving your game and ensuring that whatever gear and equipment you are using is right for you.
**Time-Saving and Efficiency **
Shopping for golf equipment from the comfort of your home can save you time. Instead of taking a car and moving from shop to shop, you can only look for what you need and have it brought to you.
Such efficiency is quite an advantage, especially for people with pending errands, as they wish to accomplish them within the shortest time possible. In another case, online shopping enables a consumer to search, read the customers’ reviews on the product, and make a purchase within a short period.
**Club Shop & Members’ Offers **
Most online [golf stores](https://www.shopclublink.ca/) have signing-up options and membership options that can give you access to even more offers and discounts. For instan
ce, there are website sales services that allow you to receive a box of golf items of your choice each month. These boxes contain additional items, samples, and often discounts that allow you to experiment with new products and save money.
The awards provided through the membership programs also include a choice of free shipping, priority to numerous sales and a number of special discounts. These programs are the bonus offers that help make Internet shopping that much better and within the consumer’s best interest.
**Conclusion **
From the variety of products and quite attractive prices to the comfort of shopping right from home and the consultation of experts, golf stores offer a better shopping experience. Also, adapting the products, finding new brands, and using the opportunities of subscription services or membership boost the idea of buying products online.
Since the adoption of technology increases, as well as the enhancement of services being offered by online retailers, the trend of buying golf equipment online is set to rise. From a professional who needs to purchase the latest in golf equipment to a beginner who wants to have the proper set before going to the course, golf shopping online has been made easier, more diverse, and affordable to attract more shoppers than any other traditional method.
| jenna_jsmith_7c60b6e65d | |
1,913,863 | [PRESALE] DogeLend ($DogeLend) | DogeLend ($DOGELEND) is the world’s first loan-giving Doge platform. It combines the fun and... | 0 | 2024-07-06T14:27:07 | https://dev.to/dogelend/presale-dogelend-dogelend-44cc | DogeLend ($DOGELEND) is the world’s first loan-giving Doge platform. It combines the fun and community spirit of the Dogecoin meme with the powerful technology of blockchain to make lending easy and enjoyable.
Price: 1 $DogeLend = $0.0002
Market Cap: 49,987,500.00
Presale URL: https://dogelending.com/
Presale Start : 08/07/2024
Presale End: 05/06/2025
Project Name: DogeLend
Symbol: DogeLend
Contract Address: 0xe59d58A3fb4c16A896bD0b2ae54Fc5C9114a63e3
Total Supply: 250,000,000,000
Soft Cap: 10,000,000
Hard Cap: 49,987,500.00
Website: https://dogelending.com/
Twitter: https://twitter.com/DogeLend
Telegram: https://t.me/dogelend_official
Whitepaper: https://lendingdoge.com/wp-content/uploads/2024/05/Dogelend_Whitepaper.pdf
Youtube: https://www.youtube.com/watch?v=aNB7CiCSqpM
Instagram: https://www.instagram.com/dogelend_official
Medium: https://medium.com/@dogelend
Github: https://github.com/DogeLend
CoinMarketCap: https://coinmarketcap.com/community/profile/DogeLend/
Linktree: https://linktr.ee/dogelend | dogelend | |
1,913,862 | Layout Là Gì? Tầm Quan Trọng Của Layout Đối Với Website | Layout là một khái niệm quan trọng trong thiết kế web, ảnh hưởng trực tiếp đến sự thu hút và chuyển... | 0 | 2024-07-06T14:26:09 | https://dev.to/terus_technique/layout-la-gi-tam-quan-trong-cua-layout-doi-voi-website-3jkb | website, digitalmarketing, seo, terus |
Layout là một khái niệm quan trọng trong thiết kế web, ảnh hưởng trực tiếp đến sự thu hút và chuyển đổi người dùng. Layout được định nghĩa là cách sắp xếp, bố trí các thành phần trên trang web để tạo ra một giao diện trực quan và dễ sử dụng.
Các thành phần không thể thiếu của một layout website bao gồm: tiêu đề, menu, nội dung chính, sidebar, footer. Sự sắp xếp hài hòa và hiệu quả của các thành phần này sẽ quyết định chất lượng của layout.
Vai trò quan trọng của layout trong [thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/):
Nâng cao giá trị thẩm mỹ: Layout tạo nên diện mạo, phong cách độc đáo của website, gia tăng tính hấp dẫn và dễ nhìn cho người dùng.
Tạo sự liên kết giữa các thành phần: Layout giúp liên kết hài hòa các thành phần như tiêu đề, menu, nội dung, hình ảnh để người dùng dễ dàng quan sát và tương tác.
Gia tăng sự thu hút: Layout hiệu quả sẽ thu hút sự chú ý của người dùng, khuyến khích họ dành nhiều thời gian hơn trên website.
Khi có layout trước khi [thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/), bạn có thể tận dụng nhiều lợi ích như: dễ dàng lên ý tưởng, tối ưu trải nghiệm người dùng, tiết kiệm thời gian và chi phí.
Có 5 quy tắc thường gặp khi thiết kế layout:
Quy tắc một phần ba: Chia trang web thành 3 phần ngang/dọc để tạo sự cân bằng.
Quy tắc số lẻ: Sử dụng số lẻ (3, 5, 7...) trong các thành phần để thu hút mắt người dùng.
Quy tắc cân bằng: Cân bằng giữa các khối nội dung, hình ảnh và khoảng trống.
Quy tắc nhấn mạnh: Tạo điểm nhấn bằng các yếu tố như màu sắc, kích thước, vị trí.
Quy tắc lưới: Sử dụng lưới (grid) để sắp xếp các thành phần một cách có quy tắc.
Có nhiều loại layout cơ bản như: layout một cột, chia màn hình, bất đối xứng, dạng lưới kết hợp thẻ, hình hộp, thanh bên cố định, sử dụng hình ảnh, dạng chữ F, chữ Z. Mỗi loại layout đều có ưu, nhược điểm riêng, cần lựa chọn phù hợp với mục tiêu, nội dung và trải nghiệm mong muốn của website.
Layout website cũng ảnh hưởng đến SEO, cần tối ưu các yếu tố như cấu trúc, tốc độ trang, tương thích di động. Việc kiểm tra layout trên các thiết bị và theo dõi hiệu quả cũng rất quan trọng.
Layout giữ vai trò cốt lõi trong thiết kế web, ảnh hưởng đến mọi khía cạnh như thẩm mỹ, trải nghiệm người dùng và hiệu quả kinh doanh. Việc hiểu và vận dụng đúng các nguyên tắc layout là bước quan trọng để xây dựng một website thành công.
Tìm hiểu thêm về [Layout Là Gì? Tầm Quan Trọng Của Layout Đối Với Website](https://terusvn.com/thiet-ke-website/layout-la-gi/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,861 | Quest Words: Word Connect | Word puzzle games train brain and improve memory. Find and connect the words! Welcome to the Word... | 0 | 2024-07-06T14:23:24 | https://dev.to/slypuzzle/quest-words-word-connect-2p44 | word, android, gamedev | Word puzzle games train brain and improve memory. Find and connect the words!
**Welcome to the Word Game!**
[Word Connect](https://play.google.com/store/apps/details?id=com.slypuzzle.questwords) is a dynamic word puzzle game that merges the best of word search and logic puzzles into a single thrilling experience! Opportunity to learn new words! Ideal for enthusiasts of free puzzle games, crosswords, finding words, fillwords, letter games, wow and other mental exercises designed to test your language abilities. Word Connect offers daily challenges to keep brain constantly engaged.
**Dive into the best word game! **
Quest Words allows you to create a crossword puzzle line from given letters. New crosswords are ready to play.
Word Connect offline is cherished by over a million players globally! Solve fun letter puzzles!
**🎮 HOW TO PLAY:**
Just swipe your finger across the screen to connect the letters and complete the crossword line! If hidden words elude you, utilize hints to crack the puzzle. The letter game challenge will test your vocabulary, literary sense, and crossword puzzle skills.
Amass intricate crosswords and navigate through each level and puzzle, overcoming any challenges you encounter.
Attempt to connect letters and verify your spelling!
**🚀 FUNCTIONS:**
• Daily Rewards.
• Crosswords are varied, from simple to complex.
• Word game Free and straightforward gameplay.
• Play offline anytime without time constraints.
• Simple and enjoyable game mechanics.
• Automatic save feature.
• Word puzzle games suitable for all ages!
• Difficulty scales with levels.
• Stunning visuals and scenic backgrounds.
• Support for phones and tablets.
**⌛ GREAT ADVANTAGES:**
• Word puzzle games help boost memory.
• Primarily, puzzles serve as an excellent pastime killer.
• The letter game enhances your literacy.
• Expand your vocabulary with the built-in dictionary.
• Enjoy the Word Game offline.
Can you master all the crosswords?
[Quest Words](https://play.google.com/store/apps/details?id=com.slypuzzle.questwords) enables you to significantly enhance your vocabulary, concentration, and spelling abilities.
Enjoy Find Words: Word Connect offline!
Attractive design, access to all crosswords free of charge!
**✨ HEALTH AND MEMORY BENEFITS:**
Engaging with Word Connect Free is more than just entertainment; it's an investment in your health. Scientific studies indicate that regularly solving Word puzzle games can enhance cognitive function, improve memory retention, and delay the onset of dementia. This crossword provides a fun way to stimulate your brain, sharpen your problem-solving skills, and maintain mental agility. Whether you're on your daily commute or relaxing at home, each crossword challenges your brain and boosts your linguistic abilities.
**🧠 BOOST YOUR BRAIN: IMPROVE MEMORY AND COGNITIVE SKILLS**
Improving memory leads to quicker thinking. When we work on our memory, our brain gets better at learning and staying sharp. This helps us think more clearly, be more creative, and focus better.
Additionally, a strong memory helps us solve problems more efficiently and make better decisions. It allows us to recall important information when we need it and apply it effectively in various situations. By consistently challenging our memory, we keep our mind active and engaged, which can improve our overall cognitive health and quality of life.
Engage in activities like searching and word connect to train your brain, improve memory, and develop attention, vocabulary, reaction speed, and overall brain growth.
**The Find Words game is waiting for you, you must try it! **Demonstrate your thinking skills and brain development. Improve your memory and attention sharp!
**Enjoy the challenge!** | slypuzzle |
1,913,819 | How to create awaitable prompt as React Component | Motivation JavaScript browser API has prompt() function which is a synchronized function... | 0 | 2024-07-06T14:23:07 | https://dev.to/ku6ryo/how-to-create-awaitable-prompt-as-react-component-m9l | react, ui, typescript | # Motivation
JavaScript browser API has `prompt()` function which is a synchronized function for getting text input from user. We sometimes uses that kind of input UI components. However, the natively implemented UI component cannot be customized. I wanted to make it with customized UI and make it awaitable like `const value = await prompt();`.
# Implementation
Like public react component libraries, I implemented use hook function. I'm exposing only the `usePrompt()` because I do not want developers to care about the UI implementation and want them to focus on using it as a capsulized feature.
TyepScript implementation.
```typescript
import styles from "./style.module.scss"
import { useState, useRef, useCallback } from "react"
import { createPortal } from "react-dom"
type Props = {
open: boolean
value: string
onChange: (value: string) => void
onClose: (value: string | null) => void
}
export function Prompt({
open,
value,
onChange: onValueChange,
onClose
}: Props) {
const onChange = useCallback((e: React.ChangeEvent<HTMLInputElement>) => {
onValueChange(e.target.value)
}, [onValueChange])
const onOkClick = useCallback(() => {
onClose(value)
}, [value, onClose])
const onCancelClick = useCallback(() => {
onClose(null)
}, [onClose])
return createPortal((
open && (
<div className={styles.cover}>
<div className={styles.frame}>
<div>
<input type="text" value={value} onChange={onChange} />
</div>
<div>
<button onClick={onCancelClick}>CANCEL</button>
<button onClick={onOkClick}>OK</button>
</div>
</div>
</div>
)
), document.body)
}
export function usePrompt() {
const [open, setOpen] = useState<boolean>(false)
const [value, setValue] = useState<string>("")
const onCloseRef = useRef<(value: string | null) => void>()
const onClose = useCallback((value: string | null) => {
setOpen(false)
if (onCloseRef.current) {
onCloseRef.current(value)
}
}, [setOpen, onCloseRef])
const onChange = (value: string) => {
setValue(value)
}
return {
open: async (value: string) => {
setOpen(true)
setValue(value)
return new Promise<string|null>((resolve) => {
onCloseRef.current = (value: string | null) => {
resolve(value)
}
})
},
elem: (
<Prompt open={open} value={value} onClose={onClose} onChange={onChange}/>
)
}
}
```
Style in SASS
```sass
.cover {
align-items: center;
background-color: rgba(0, 0, 0, 0.5);
display: flex;
justify-content: center;
height: 100dvh;
left: 0;
position: fixed;
top: 0;
width: 100dvw;
}
.frame {
background-color: white;
padding: 16px;
}
```
How to use
```typescript
import { usePrompt } from "./Prompt"
import { useState } from "react"
function App() {
const { open, elem } = usePrompt()
const [value, setValue] = useState<string>("")
const onOpenClick = () => {
open("Initial value").then((value) => {
setValue(value || "cancelled")
})
}
return (
<>
<div>
<button onClick={onOpenClick}>Open prompt</button>
</div>
{value && <div>Input value: {value}</div>}
{elem}
</>
)
}
```
You can check [my git repo](https://github.com/ku6ryo/ReactPrompt) if you want. Hope this helps! | ku6ryo |
1,913,860 | Why Your AI Assistant Is Smarter Than You Think | Ever wondered how ChatGPT can discuss philosophy one moment and write code the next? Or how DALL-E... | 0 | 2024-07-06T14:21:07 | https://dev.to/samadpls/why-your-ai-assistant-is-smarter-than-you-think-17n2 | ai, llm, machinelearning, chatgpt | Ever wondered how ChatGPT can discuss philosophy one moment and write code the next? Or how DALL-E creates stunning images from mere text descriptions? The answer lies in a groundbreaking AI technology that's changing the game: foundation models. I'm Abdul Samad, known in tech circles as [`samadpls`](https://github.com/samadpls), and I'm here to unveil the secret behind these AI powerhouses. In this article, we'll explore what foundation models are, why they're so versatile, and how they're driving the most impressive AI applications we see today. Let's uncover the driving force behind the AI revolution and confidently explore the potential of these hidden giants.
### So What Are Foundation Models?
Foundation models are like big collections of data that cover lots of different topics and ways of doing things, like language, audio, and vision. They go through a ton of training to understand and create all kinds of content in different areas. Because of this, foundation models can be used for all sorts of things, which makes them super valuable in the world of AI.
### The Power of Foundation Models
One of the most powerful types of foundation models is the Large Language Model (LLM). LLMs are trained on extensive text data and can understand and generate human-like text. This makes them great for tasks such as text generation, translation, and more.
### How can we use Foundation Models then?
So, there are two primary ways to use foundation models:
1. **Prompts**: You can pass prompts (input queries) to the foundation model and receive responses. This is a straightforward way to get the model to perform tasks, just like we do with ChatGPT.
2. **Inference Parameters**: This approach involves configuring parameters such as top P, top K, and temperature. Though it sounds technical, it significantly influences the model’s output. Here is a breakdown of these parameters:
- **Top P**: This controls the selection of tokens based on their combined probability. A higher top P value (like 0.9) means the output will be more varied but might be a bit random. Lower top P values make the output more predictable.
- **Top K**: Similar to the k-nearest neighbours (KNN) algorithm, top K limits the selection to the top K probable tokens. Typical values range from 10 to 100. A value of 1 is called a greedy strategy, as it always chooses the most probable token.
- **Temperature**: This parameter affects the randomness of the output. Think of this as setting the creativity level. Higher temperatures lead to more creative and random outputs, while lower temperatures make the output more predictable and steady.
### Then How do LLMs Work?
LLMs operate on tokens, which can be words, letters, or parts of words. The model takes a sequence of input tokens and predicts the next token. By using effective inference parameters, you can guide the LLM to produce relevant and coherent outputs for your specific use case.
In the next article, we will go deeper into why vectors and vector databases are so important in LLMs. Stay tuned!
| samadpls |
1,913,859 | 10 Font Chữ Cho Website Đẹp Nhất 2024 Và Cách Lựa Chọn | Trong thiết kế website, font chữ là yếu tố quan trọng không kém các yếu tố khác như hình ảnh và bố... | 0 | 2024-07-06T14:20:52 | https://dev.to/terus_technique/10-font-chu-cho-website-dep-nhat-2024-va-cach-lua-chon-2ela | website, digitalmarketing, seo, terus |
Trong [thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/), font chữ là yếu tố quan trọng không kém các yếu tố khác như hình ảnh và bố cục. Việc lựa chọn font chữ phù hợp không chỉ giúp nâng cao tính thẩm mỹ của trang web, mà còn tạo dựng được sự chuyên nghiệp và đáng tin cậy đối với người dùng.
Trước tiên, cần phân biệt rõ ràng sự khác nhau giữa "font" và "typeface". Font là một bộ các ký tự có cùng phong cách, như cỡ chữ, độ đậm nhạt, nghiêng... Còn typeface là tập hợp các font có cùng phong cách thiết kế. Ví dụ, Times New Roman là một typeface, và có nhiều font khác nhau như Times New Roman Regular, Times New Roman Bold, Times New Roman Italic, v.v.
Các font chữ có thể được phân loại thành các nhóm như serif (có chân), sans-serif (không có chân), script (như chữ viết tay), monospace (có khoảng cách giữa các ký tự bằng nhau). Mỗi phong cách sẽ mang lại những cảm xúc và ấn tượng khác nhau cho người đọc.
Dựa trên những yêu cầu về tính thẩm mỹ, tính dễ đọc và phổ biến, top 10 font chữ tiếng Việt đẹp nhất năm 2024 có thể kể đến như: Arial, Times New Roman, Helvetica, Courier, Verdana, Georgia, Tahoma, Calibri, Garamond và Bookman.
Khi lựa chọn font chữ cho website, cần lưu ý một số điểm sau:
Font chữ phải rõ ràng, dễ đọc. Nội dung website cần phải dễ tiếp cận và đọc hiểu với người xem.
Mọi loại website đều cần có font chữ phù hợp, không phân biệt website cá nhân hay website doanh nghiệp. Font chữ ảnh hưởng lớn đến trải nghiệm người dùng.
Các font chữ trên website phải được thống nhất, tránh sử dụng quá nhiều font khác nhau gây rối mắt.
Nên sử dụng các font chữ tiêu chuẩn và phổ biến, tránh các font chữ đặc biệt hoặc khó đọc.
Việc lựa chọn font chữ hợp lý sẽ giúp website trở nên chuyên nghiệp, thu hút người dùng và tăng độ tin cậy cho thương hiệu. Bên cạnh đó, cần cân nhắc các yếu tố như dễ đọc, phù hợp với nội dung, thống nhất trên toàn trang web.
Việc hiểu rõ các nguyên tắc về font chữ và lựa chọn các font chữ phù hợp sẽ giúp bạn [thiết kế website đẹp, chuyên nghiệp](https://terusvn.com/thiet-ke-website-tai-hcm/) và thu hút khách hàng. Hãy cân nhắc kỹ lưỡng các gợi ý trên để có thể lựa chọn được font chữ ưng ý nhất cho website của mình.
Tìm hiểu thêm về [10 Font Chữ Cho Website Đẹp Nhất 2024 Và Cách Lựa Chọn ](https://terusvn.com/thiet-ke-website-tai-hcm/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,825 | Các Dạng Nội Dung Website Hiện Nay Và Tầm Quan Trọng | Các dạng nội dung website hiện nay: Bài giới thiệu sản phẩm/dịch vụ Bài tin tức Bài chia sẻ thông... | 0 | 2024-07-06T14:14:02 | https://dev.to/terus_technique/cac-dang-noi-dung-website-hien-nay-va-tam-quan-trong-342g | website, digitalmarketing, seo, terus |
Các dạng nội dung website hiện nay:
Bài giới thiệu sản phẩm/dịch vụ
Bài tin tức
Bài chia sẻ thông tin hữu ích
Bài chia sẻ trải nghiệm, review
Bài viết dạng list, top
Bài về các hoạt động trong doanh nghiệp
Nội dung website là yếu tố then chốt quyết định sự thành công của một website. Một website có thiết kế tuyệt vời nhưng nếu không có nội dung chất lượng sẽ khó thu hút và giữ chân khách truy cập. Do đó, cần [xây dựng chiến lược nội dung website](https://terusvn.com/thiet-ke-website-tai-hcm/) bài bản, bao gồm các yếu tố như lập kế hoạch, tạo nội dung hữu ích trên website và bên ngoài, quản lý và đo lường hiệu quả.
Các dạng nội dung website như giới thiệu sản phẩm, tin tức, chia sẻ kiến thức, review, v.v. cần được cân nhắc kỹ lưỡng để đáp ứng nhu cầu đa dạng của khách truy cập. Nội dung chất lượng sẽ giúp tăng thời gian lưu lại trên website, cải thiện thứ hạng trên công cụ tìm kiếm và thúc đẩy chuyển đổi.
Trong bối cảnh cạnh tranh ngày càng gay gắt, việc xây dựng chiến lược nội dung website hiệu quả là yếu tố then chốt giúp doanh nghiệp tăng tính thu hút, tương tác và tín nhiệm với khách hàng. Nội dung [website chất lượng](https://terusvn.com/thiet-ke-website-tai-hcm/) sẽ là chìa khóa để tạo dựng một website thành công và bền vững.
Tìm hiểu thêm về [Các Dạng Nội Dung Website Hiện Nay Và Chiến Lược Phát Triển](https://terusvn.com/thiet-ke-website/cac-dang-noi-dung-website-hien-nay/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,824 | UNRAVELING THE SECRETS OF THE ICONIC IRIS DATASET | INTRODUCTION: The Iris dataset is a classic and widely-used dataset in the field of machine... | 0 | 2024-07-06T14:13:31 | https://dev.to/browhnshuga/unraveling-the-secrets-of-the-iconic-iris-dataset-4gf0 | beginners, datascience, javascript, opensource | INTRODUCTION:
The Iris dataset is a classic and widely-used dataset in the field of machine learning and statistics, a true classic in the world of machine learning and statistics. It contains measurements for 150 iris flowers across 3 different species - Iris setosa, Iris versicolor, and Iris virginica. Each flower is described by four continuous features: sepal length, sepal width, petal length, and petal width. The dataset also includes a target variable that represents the iris species .This report outlines some initial observations and insights about the Iris dataset. This dataset was made available by HNG tech, to be a part of their internship program, https://hng.tech/internship, https://hng.tech/hire.
OBSERVATIONS:
1. Variable Types: The dataset contains 4 continuous feature variables (sepal length, sepal width, petal length, petal width) and 1 categorical target variable (iris species).
2. Class Balancing: The dataset is evenly balanced. Each species is represented by 50 instances for each of the 3 iris species, ensuring that the dataset is not skewed towards any particular class. This balanced distribution is quite useful for evaluating the performance of classification algorithms.
3. Separability: The dataset description notes that one class, Iris setosa, is linearly separable from the other two. This means that a simple linear model, like a logistic regression, can easily distinguish Iris setosa from the other two species. However, the Iris versicolor and Iris virginica classes are not linearly separable, adding an extra layer of complexity to the problem.
4. Data Quality: The dataset's high data quality is also worth noting. There are no missing values. However, the description notes a few minor errors in the 35th and 38th samples that should be considered.
5. Simplicity: The dataset is described as an "exceedingly simple domain", suggesting it may not be representative of more complex real-world classification problems. However, its simplicity also makes it an ideal playground for beginners and seasoned data scientists alike, allowing them to experiment with different algorithms and gain valuable insights.
CONCLUSION:
The Iris dataset is a classic and well-known benchmark for evaluating classification algorithms. This clean and well-curated dataset makes it an excellent starting point for exploring various machine learning techniques. Its simple structure, balanced class distribution, and partial linear separability make it a useful starting point for exploring machine learning techniques. However, the dataset's simplicity also limits its applicability to more complex real-world problems. Further analysis could explore the performance of various classification
 | browhnshuga |
1,913,823 | Automate Your local VM workflow | Tired of the repetitive process of setting up a new Linux virtual machine for pen testing? Do you... | 0 | 2024-07-06T14:13:04 | https://dev.to/0ussamabernou/automate-your-local-vm-workflow-3ddi | devops, ansible, vagrant, linux | Tired of the repetitive process of setting up a new Linux virtual machine for pen testing? Do you ever find yourself creating snapshots to avoid configuration mistakes, only to forget to do so and end up reinstalling everything? This blog post introduces you to Vagrant andG Ansible, a powerful combination that lets you automate VM provisioning and configuration, saving you time and frustration.
**Disclaimer:** This guide is designed for users with GNU/Linux(akshually) based systems who are familiar with basic command-line operations.
**Prerequisites:**
* A computer running Debian, Ubuntu, or a similar GNU/Linux distribution.
* An internet connection.
**What We'll Build:**
We'll create a Vagrantfile to define our virtual machine configuration and an Ansible playbook to automate the installation of essential pen testing tools on a Kali Linux VM.
### Installation
**1. Vagrant:**
```bash
wget -O- https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
sudo apt update && sudo apt install vagrant
```
**2. Ansible:**
```bash
sudo apt update
sudo apt install software-properties-common
sudo add-apt-repository --yes --update ppa:ansible/ansible
sudo apt install ansible
```
**3. VirtualBox:**
```bash
sudo apt update
# Uncomment the line corresponding to the desired VirtualBox version:
# Older version
# sudo apt install virtualbox
# Latest version (at the time of writing)
# sudo apt install virtualbox-7.0
```
**Alternative Installation Methods:**
While these instructions cover Debian/Ubuntu, you can find installation guides for other operating systems on the official websites of Vagrant, Ansible, and VirtualBox:
* Vagrant: [https://developer.hashicorp.com/vagrant/install](https://developer.hashicorp.com/vagrant/install)
* Ansible:[https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html](https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html)
* VirtualBox: [https://www.virtualbox.org/wiki/Downloads](https://www.virtualbox.org/wiki/Downloads)
### Getting Started
We'll use Vagrant and Ansible to provision a Kali Linux virtual machine for pen testing.
**1. Initialize the Project:**
First, create a new directory for your project and navigate to it:
```bash
mkdir vagrant_kali
cd vagrant_kali
```
or a use my oneliner:
```bash
mkcd vagrant_kali
```
> **Tip of the Day:**
>
> The `mkcd` function is a handy shortcut that creates a directory and changes the directory in one step. You can add this function to your `~/.bashrc` or `~/.zshrc` file for future use:
>
> ```bash
> mkcd () {
> mkdir -p -- "$1" && cd -P -- "$1"
> }
> ```
Now, initialize the project with Vagrant:
```bash
vagrant init kalilinux/rolling
```
This command creates a `Vagrantfile` pre-populated with comments and examples.
**2. Understanding Vagrant Boxes:**
A Vagrant box is a pre-configured virtual machine image. We'll use the `kalilinux/rolling` box, which provides a ready-to-use Kali Linux installation. You can search for boxes for different operating systems on the [HashiCorp's Vagrant Cloud box catalog](https://vagrantcloud.com/boxes/search).
**3. Vagrantfile Breakdown:**
```ruby
Vagrant.configure("2") do |config|
config.vm.box = "kalilinux/rolling"
config.vm.box_version = "2024.2.0"
config.vm.network "private_network", ip: "192.168.56.10"
config.vm.hostname = "machine"
config.ssh.insert_key = false
config.vm.disk :disk, size: "35GB", primary: true
config.vm.provider "virtualbox" do |v|
# set up vm name in virtualbox
v.name = "kali-machine"
# Display the VirtualBox GUI when booting the machine
v.gui = true
v.memory = 8192
v.cpus = 6
end
# Set the name of the VM. See: http://stackoverflow.com/a/17864388/100134
config.vm.define :kali_machine do |kali_machine|
end
# Ansible config
config.vm.provision "ansible" do |ansible|
# Ansible playbook path
ansible.playbook = "provisioning/playbook.yml"
# Minimum version of ansible
ansible.compatibility_mode = "2.0"
# enables priviliege escation(sudo) for ansible
ansible.become = true
end
end
```
The `Vagrantfile` defines the configuration for your virtual machine. Here's a breakdown of some key options:
| Option | Description |
| ---------------------------------- | ------------------------------------------------------------------------------- |
| `config.vm.box` | Specifies the name of the Vagrant box (e.g., `kalilinux/rolling`). |
| `config.vm.box_version` (Optional) | Sets the specific version of the box to use. |
| `config.vm.network` | Configures network settings for the VM (e.g., private network, forwarded port). |
| `config.vm.hostname` | Sets the hostname for the VM. |
| `config.vm.disk` | Defines the size and type of the virtual disk. |
| `config.vm.provider "virtualbox"` | Configures settings specific to the VirtualBox provider. |
| `config.vm.provision` | Enables provisioning tools like Ansible to automate VM configuration. |
### Ansible Playbook
Now that we have the Vagrantfile defining our VM configuration, let's create an Ansible playbook to automate the installation of essential pen testing tools on our Kali Linux VM.
**1. Playbook Structure:**
We'll create a directory structure to organize our Ansible playbook and roles:
```
.
├── provisioning
│ ├── playbook.yml
│ └── roles
│ └── kali-init
│ └── tasks
│ ├── main.yml
│ ├── packages.yml
│ └── tor.yml
└── Vagrantfile
```
* `provisioning`: This directory holds our Ansible playbook (`playbook.yml`).
* `roles`: This directory contains reusable Ansible roles. In this case, we have a single role named `kali-init` that holds the tasks for our playbook.
* `tasks`: This directory within the `kali-init` role contains our Ansible tasks defined in YAML files.
**2. playbook.yml:**
This file defines the overall structure of our Ansible playbook:
```yaml
- hosts: all
become: yes
roles:
- kali-init
```
* `hosts: all`: This specifies that the tasks in the playbook should run on all hosts managed by Ansible (in this case, our single Kali Linux VM).
* `become: yes`: This enables privilege escalation (using sudo) for the tasks in the playbook to perform administrative actions.
* `roles`: This section defines the roles that will be applied to the target hosts. Here, we reference the `kali-init` role.
**3. kali-init Role:**
The `kali-init` role contains the actual tasks that will be executed on the VM. These tasks are defined in YAML files within the `tasks` directory of the role.
**4. Tasks:**
The tasks for installing packages and configuring Tor are divided into separate YAML files for better organization:
* `main.yml`: This file coordinates task execution and includes the other task files.
```yaml
- import_tasks: packages.yml
become: yes
- import_tasks: tor.yml
become: yes
```
* `packages.yml`: This file defines the installation of essential pen testing tools using the `apt` package manager.
```yaml
- name: Download packages using apt
apt:
update_cache: yes
name:
- neovim
- curl
- wget
- git
- tmux
- apt-transport-https
- maltego
- metasploit-framework
- burpsuite
- wireshark
- aircrack-ng
- hydra
- nmap
- beef-xss
- nikto
- nmap
- wireshark
- proxychains
state: present
become: yes
```
* `tor.yml`: This file configures the Tor anonymization service for improved security during pen testing activities.
> tor is available in kali's repositories but is not always up-to-date and something as sensitive as anonymizition software should be installed directly from source
```yaml
---
- name: Add Tor project repository to sources list
copy:
dest: /etc/apt/sources.list.d/tor.list
content: |
deb https://deb.torproject.org/torproject.org stable main
deb-src https://deb.torproject.org/torproject.org stable main
- name: Add Tor project GPG key
apt_key:
url: https://deb.torproject.org/torproject.org/A3C4F0F979CAA22CDBA8F512EE8CBC9E886DDD89.asc
state: present
- name: Update apt package lists
apt:
update_cache: yes
- name: Install Tor and keyring
apt:
name:
- tor
- deb.torproject.org-keyring
state: present
- name: Ensure Proxychains is installed
apt:
name: proxychains
state: present
- name: Ensure tor is installed
apt:
name: tor
state: present
- name: Enable tor service
ansible.builtin.systemd:
name: tor
state: started
enabled: true
- name: Backup current proxychains.conf
copy:
src: /etc/proxychains.conf
dest: /etc/proxychains.conf.bak
remote_src: yes
- name: Uncomment dynamic_chain
replace:
path: /etc/proxychains.conf
regexp: '^#dynamic_chain'
replace: 'dynamic_chain'
- name: Uncomment proxy_dns
replace:
path: /etc/proxychains.conf
regexp: '^#proxy_dns'
replace: 'proxy_dns'
- name: Comment random_chain
replace:
path: /etc/proxychains.conf
regexp: '^random_chain'
replace: '#random_chain'
- name: Comment strict_chain
replace:
path: /etc/proxychains.conf
regexp: '^strict_chain'
replace: '#strict_chain'
- name: Modify proxychains configuration
lineinfile:
path: /etc/proxychains.conf
line: 'socks5 127.0.0.1 9050'
state: present
- name: Modify proxychains configuration
lineinfile:
path: /etc/proxychains.conf
line: 'socks4 127.0.0.1 9050'
state: present
```
* `install_syncthing.yml`: This file installs the Syncthing service.
```yaml
- name: Add Syncthing GPG key
apt_key:
url: https://syncthing.net/release-key.txt
state: present
- name: Add Syncthing repository to sources list
apt_repository:
repo: 'deb https://apt.syncthing.net/ syncthing stable'
state: present
- name: Create preferences file for Syncthing
copy:
dest: /etc/apt/preferences.d/syncthing
content: |
Package: *
Pin: origin apt.syncthing.net
Pin-Priority: 1001
- name: Update apt package lists
apt:
update_cache: yes
- name: Install Syncthing
apt:
name: syncthing
state: present
```
**5. Security Considerations:**
While `become: yes` simplifies Ansible tasks, it's crucial to understand the security implications. Only grant privileges as needed and review the tasks carefully before running them.
**6. Using Vagrant:**
With everything set up, let's provision and start our Kali Linux VM:
1. Navigate to the project directory (`vagrant_kali`).
2. Run the command `vagrant up` to bring up the VM and execute the Ansible playbook.
Vagrant will provision and start the Kali Linux VM. If configured, the VirtualBox GUI will be displayed.
This is the Ansible playbook output, indicating successful completion.
The Kali VM is up and running!
>**N.B**
default user is `vagrant` and default password is also `vagrant`
**Vagrant Commands:**
Here's a quick reference for some common Vagrant commands:
* `vagrant up`: Provisions and starts the virtual machine.
* `vagrant provision`: Runs provisioning playbook.
* `vagrant halt`: Pauses the virtual machine.
* `vagrant destroy`: Completely removes the virtual machine and its associated resources.
**Conclusion:**
By combining Vagrant and Ansible, you can automate the process of setting up Linux VM for pen testing, development..., saving you time and effort. This blog post provides a basic framework to get you started. Remember to customize the tools and configurations in the Ansible playbook to suit your specific needs.
| 0ussamabernou |
1,913,821 | Các Yếu Tố Cần Có Trong Một Website | Xây dựng một website chuyên nghiệp, hiệu quả và thu hút khách hàng là một mục tiêu quan trọng của... | 0 | 2024-07-06T14:07:25 | https://dev.to/terus_technique/cac-yeu-to-can-co-trong-mot-website-1nm | website, digitalmarketing, seo, terus |
Xây dựng một website chuyên nghiệp, hiệu quả và thu hút khách hàng là một mục tiêu quan trọng của nhiều doanh nghiệp trong thời đại số hiện nay. Một website có thể được xem là "bộ mặt" số của doanh nghiệp, là nơi cung cấp đầy đủ thông tin về sản phẩm, dịch vụ và tương tác với người dùng. Vì vậy, các yếu tố cấu thành nên một website chuyên nghiệp cần được đặc biệt chú trọng.
Đầu tiên, một website chuyên nghiệp cần có mục tiêu rõ ràng, phù hợp với chiến lược kinh doanh của doanh nghiệp. Mục tiêu này sẽ định hướng cho việc thiết kế giao diện, lựa chọn nội dung, và xây dựng các chức năng của website. Giao diện website cần được thiết kế một cách đẹp mắt, thân thiện với người dùng, tạo cảm giác chuyên nghiệp và tin cậy. Nội dung website phải là chất lượng cao, cung cấp thông tin hữu ích, đáp ứng nhu cầu của khách hàng.
Yếu tố quan trọng tiếp theo là tối ưu hóa công cụ tìm kiếm (SEO). Điều này sẽ giúp website dễ dàng được tìm thấy trên các công cụ tìm kiếm như Google, Bing,... Các chức năng cần được tích hợp đầy đủ, đảm bảo sự trải nghiệm người dùng tốt nhất. Bên cạnh đó, vấn đề bảo mật cao cũng rất quan trọng, nhằm bảo vệ dữ liệu của khách hàng và doanh nghiệp.
Bố cục website cũng ảnh hưởng đáng kể đến sự chuyên nghiệp và thu hút của website. Bố cục hợp lý, dễ sử dụng sẽ giúp người dùng dễ dàng tìm kiếm và truy cập thông tin. Tốc độ truy cập nhanh, tối ưu kích thước hình ảnh cũng là các yếu tố cần được chú trọng để tăng trải nghiệm người dùng.
Ngoài ra, website cần được thiết kế thân thiện với thiết bị di động, nhằm đáp ứng nhu cầu truy cập của người dùng ngày càng nhiều trên các thiết bị cầm tay. Cuối cùng, việc quản trị website một cách dễ dàng cũng rất quan trọng, giúp doanh nghiệp có thể nhanh chóng cập nhật thông tin và điều chỉnh nội dung phù hợp.
Bên cạnh các yếu tố cơ bản trên, các xu hướng [phát triển website](https://terusvn.com/thiet-ke-website-tai-hcm/) nổi bật trong năm 2024 và những năm tới cũng cần được lưu ý. Các công nghệ như trí tuệ nhân tạo (AI), học máy (ML), thực tế ảo (VR) và thực tế ảo tăng cường (AR) đang và sẽ tiếp tục ảnh hưởng đến việc thiết kế và phát triển website. Xu hướng cá nhân hóa trải nghiệm người dùng cũng ngày càng được chú trọng.
Xây dựng một [website chuyên nghiệp, hiệu quả](https://terusvn.com/thiet-ke-website-tai-hcm/) và thu hút khách hàng là một nhiệm vụ quan trọng đối với các doanh nghiệp trong thời đại số hiện nay. Các yếu tố như mục tiêu rõ ràng, thiết kế giao diện, nội dung chất lượng, tối ưu hóa SEO, chức năng đầy đủ, bảo mật cao, bố cục hợp lý, tốc độ truy cập nhanh, tương thích với thiết bị di động và dễ quản trị là các yếu tố then chốt cần được đảm bảo.
Tìm hiểu thêm về [Các Yếu Tố Cần Có Trong Một Website](https://terusvn.com/thiet-ke-website/cac-yeu-to-trong-website/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,820 | Using Another NixOS System as a Binary Cache for Flake Configurations on Your Home Network | TL;DR Connect both NixOS systems to the same network. On the host system, run: nix run... | 0 | 2024-07-06T14:06:36 | https://dev.to/ehsan2003/using-another-nixos-system-as-a-binary-cache-for-flake-configurations-on-your-home-network-487i |
#### TL;DR
1. Connect both NixOS systems to the same network.
2. On the host system, run: `nix run github:edolstra/nix-serve`
3. Use SSH port forwarding: `ssh -L 5000:127.0.0.1:5000 <user>@<host-ip> -N`
4. Build with: `sudo nix build .#nixosConfigurations.<your config name>.config.system.build.toplevel --extra-substituters 'http://localhost:5000' --no-require-sigs`
5. Switch configuration: `sudo nixos-rebuild switch --flake .#<your config name>`
### Introduction
In NixOS, rebuilding and redownloading packages can be time-consuming. To streamline this process, you can use another NixOS system on your home network as a binary cache. This guide will walk you through setting up a binary cache on a host machine and configuring another system to use this cache, reducing rebuild and download times for Nix flakes configurations.
### Step-by-Step Instructions
#### Step 1: Connect Both Systems to the Same Network
Ensure both the host and target NixOS systems are connected to the same LAN or Wi-Fi network. This setup is essential for seamless communication between the systems.
#### Step 2: Run `nix-serve` on the Host Machine
On the host machine, open a terminal and run the following command:
```sh
nix run github:edolstra/nix-serve
```
This command launches the `nix-serve` utility, turning your host system into a binary cache server.
#### Step 3: Set Up SSH Port Forwarding
To avoid signature verification issues, use SSH port forwarding. Open a terminal on the target system and run:
```sh
ssh -L 5000:127.0.0.1:5000 <user>@<host-ip> -N
```
Replace `<user>` with your username and `<host-ip>` with the IP address of the host machine. This command forwards port 5000 on the target system to port 5000 on the host system.
#### Step 4: Build the System Using `nix build`
Since `nixos-rebuild` doesn't support specifying substituters directly, use `nix build`:
```sh
sudo nix build .#nixosConfigurations.<your config name>.config.system.build.toplevel --extra-substituters 'http://localhost:5000' --no-require-sigs
```
Replace `<your config name>` with the name of your NixOS configuration. This command builds the system using the binary cache on the host machine.
#### Step 5: Switch to the New Configuration
After building the system, switch to the new configuration using `nixos-rebuild`:
```sh
sudo nixos-rebuild switch --flake .#<your config name>
```
Replace `<your config name>` with the appropriate configuration name.
### Conclusion
By following these steps, you can effectively use another NixOS system as a binary cache on your home network, saving time on package rebuilds and downloads. This setup is particularly useful for users working with Nix flakes, enabling a more efficient and streamlined NixOS experience. | ehsan2003 | |
1,913,818 | Intro to Middleware | What is Middleware? Middleware is a software design pattern that enables seamless... | 0 | 2024-07-06T14:04:14 | https://dev.to/ghulam_mujtaba_247/intro-to-middleware-3m20 | webdev, beginners, programming, php | ## What is Middleware?
Middleware is a software design pattern that enables seamless communication and data exchange between different systems, applications, or services. It plays a crucial role in facilitating interactions between disparate components, adding functionality, and enhancing overall system performance.
## The Problem
In our previous project, we encountered an issue where a logged-in user was asked to register again when visiting the registration page. This was due to the lack of middleware implementation, which resulted in a poor user experience.
## Middleware in PHP
In PHP, middleware can be used to handle user registration and login functionality, ensuring a smooth user experience. Middleware acts as a bridge between different components, enabling seamless communication and data exchange.
```php
if ($_SESSION['user'] ?? false){
header('location: /');
exit();
}
```
It checks either the user is logged in or not. If not then exit the script to find authenticated user.
## Route Configuration
In the `routes.php` file, we can add a 'guest' key to the route to associate it with the middleware:
```php
$router->get('/register', 'controllers/registration/create.php')->only('guest');
```
## Debugging the Only Method
To check if the project is working as expected, you can add a debug statement in the `only` method:
```php
public function only($key){
dd($key);
}
```
It shows error as the only method cannot work with null value as it associated with get method and it doesn't return any value. So we have to rewrite the method.
## Rewriting the Add Method
To return all values to the `only` method, we need to rewrite the `add` method in the `router.php` file as:
```php
public function add($method, $uri, $controller)
{
$this->routes[] = [
'uri' => $uri,
'controller' => $controller,
'method' => $method,
'middleware'=>null
];
return $this;
}
```
Now we can see the project is working well.
## Only Method
The `only` method in the `router.php` file needs to be modified to accept the middleware key:
```php
public function only($key){
$this->routes[array_key_last($this->routes)]['middleware']=$key;
return $this;
}
```
## Middleware Check
In the `create.php` file, we can check if the user is logged in or a guest using the middleware:
```php
if ($route['middleware']==='guest'){
if($_SESSION['user'] ?? false){
header('location: /');
exit();
}
}
if ($route['middleware']==='auth'){
if(! $_SESSION['user'] ?? false){
header('location: /');
exit();
}
}
```
Only authenticated user can have access to all pages while the guest can access the only limited pages.
## Creating a Middleware Directory
To organize our middleware classes, create a new directory in the core folder named Middleware. As we have to make changes at one point for our relaxation, to save our efforts and time. By this we can make our project easier to understand. In this create 3 different classes.
## Auth Middleware
The `Authenticated.php` file checks if the user is logged in and redirects to the home page if true:
```php
<?php namespace Core\Middleware;
class Authenticated {
public function handle() {
if (! $_SESSION['user'] ?? false) {
header('location: /');
exit();
}
}
}
```
## Guest Middleware
The `Guest.php` file checks if the user is not logged in and redirects to the home page if true:
```php
<?php namespace Core\Middleware;
class Guest {
public function handle() {
if ($_SESSION['user'] ?? false) {
header('location: /');
exit();
}
}
}
```
## Middleware Class
The `Middleware.php` file uses a `MAP` constant to map middleware keys to their respective classes. Also checks either the middleware exists or not. If not then show a uncaught exception to user to add middleware in project:
```php
<?php namespace Core\Middleware;
class Middleware {
public const MAP = [
'guest' => Guest::class,
'auth' => Authenticated::class
];
public static function resolve($key) {
if (!$key) {
return;
}
$middleware = static::MAP[$key] ?? false;
if (!$middleware) {
throw new \Exception("No matching middleware found for key '{$key}'.");
}
(new $middleware)->handle();
}
}
```
Now we can see that by making these changes our project is working well.
I hope that you have clearly understood it. | ghulam_mujtaba_247 |
1,909,681 | 978978hjkhjkj | sfsdf435345 | 0 | 2024-07-03T05:13:37 | https://dev.to/sm-maruf-hossen/978978hjkhjkj-dch | sfsdf435345 | sm-maruf-hossen | |
1,913,817 | Khi Nào Cần Thiết Kế Website | Thiết kế website là một trong những yếu tố quan trọng trong việc xây dựng và phát triển sự hiện diện... | 0 | 2024-07-06T14:03:02 | https://dev.to/terus_technique/khi-nao-can-thiet-ke-website-k94 | website, digitalmarketing, seo, terus |
Thiết kế website là một trong những yếu tố quan trọng trong việc xây dựng và phát triển sự hiện diện trực tuyến của doanh nghiệp. Việc lựa chọn đúng thời điểm để thiết kế website có thể mang lại nhiều lợi ích thiết thực cho doanh nghiệp.
Đầu tiên, có mặt trên nền tảng trực tuyến toàn cầu sẽ giúp doanh nghiệp tiếp cận được khách hàng tiềm năng trên khắp thế giới, mở rộng phạm vi hoạt động. Ngoài ra, việc có website cũng giúp doanh nghiệp có một kênh thông tin sản phẩm, dịch vụ luôn sẵn sàng phục vụ khách hàng. Điều này sẽ nâng cao chất lượng phục vụ, từ đó gia tăng doanh thu bán hàng.
Vai trò của việc lựa chọn thời điểm [thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) đối với doanh nghiệp là rất quan trọng. Nếu chọn đúng thời điểm, doanh nghiệp sẽ tiết kiệm được chi phí, nâng cao hiệu quả hoạt động, đáp ứng nhu cầu thị trường và đảm bảo tiến độ dự án. Ngược lại, nếu lựa chọn thời điểm không phù hợp, doanh nghiệp sẽ mất thời gian và tiền bạc, website có nguy cơ lỗi thời, mất khách hàng tiềm năng và ảnh hưởng đến danh tiếng thương hiệu.
Để lựa chọn được thời điểm thiết kế website thích hợp, các doanh nghiệp cần cân nhắc nhiều yếu tố như: chu kỳ kinh doanh, sự cạnh tranh trong ngành, nhu cầu khách hàng, kế hoạch phát triển sản phẩm/dịch vụ mới, mức độ sẵn sàng công nghệ... Thông thường, thời điểm tốt nhất để thiết kế website là khi doanh nghiệp đang ở giai đoạn tăng trưởng, có nguồn lực tài chính và nhân lực ổn định, chuẩn bị ra mắt sản phẩm/dịch vụ mới hoặc triển khai các chiến lược marketing mới.
Việc lựa chọn đúng thời điểm [thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) là một quyết định chiến lược, ảnh hưởng trực tiếp đến hiệu quả hoạt động và khả năng cạnh tranh của doanh nghiệp. Các doanh nghiệp cần cẩn trọng và chủ động trong việc xác định thời điểm phù hợp để thiết kế website, từ đó nâng cao hiệu quả đầu tư và đạt được mục tiêu kinh doanh.
Tìm hiểu thêm về [Khi Nào Cần Thiết Kế Website](https://terusvn.com/thiet-ke-website/nam-bat-thoi-diem-thiet-ke-website/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,816 | Các Nguyên Tắc Để Có Thể Thiết Kế Website Hiệu Quả | Thiết kế website hiệu quả là yếu tố then chốt để một trang web thu hút khách truy cập, tăng tương... | 0 | 2024-07-06T13:59:44 | https://dev.to/terus_technique/cac-nguyen-tac-de-co-the-thiet-ke-website-hieu-qua-4c4k | website, digitalmarketing, seo, terus |
[Thiết kế website hiệu quả](https://terusvn.com/thiet-ke-website-tai-hcm/) là yếu tố then chốt để một trang web thu hút khách truy cập, tăng tương tác và mang lại kết quả kinh doanh như mong đợi. Có nhiều nguyên tắc cơ bản cần lưu ý khi thiết kế website, và việc tuân thủ những quy tắc này sẽ giúp website trở nên chuyên nghiệp, hấp dẫn và tối ưu hóa hiệu suất.
Đầu tiên, khi thiết kế website, cần xác định rõ mục tiêu và đối tượng khách hàng mục tiêu. Mục tiêu có thể là tăng doanh số, tăng tương tác người dùng, thu thập thông tin liên hệ,... Xác định rõ đối tượng khách truy cập cũng vô cùng quan trọng để định hướng thiết kế phù hợp. Sau đó, lựa chọn giao diện và bố cục hợp lý, đảm bảo tính thẩm mỹ, dễ sử dụng và tương thích với mục tiêu website.
Sử dụng hình ảnh và video chất lượng cao không chỉ làm website trở nên hấp dẫn mà còn góp phần tăng trải nghiệm người dùng. Nội dung website cũng cần được chú trọng, đảm bảo thông tin chính xác, hữu ích và thu hút. Việc tối ưu hóa website cho công cụ tìm kiếm (SEO) cũng rất cần thiết, giúp nâng cao khả năng hiển thị trên kết quả tìm kiếm.
Bên cạnh đó, website cần đảm bảo tương thích với nhiều thiết bị khác nhau, từ máy tính, điện thoại đến máy tính bảng. Tốc độ tải trang nhanh chóng cũng là một yếu tố quan trọng, ảnh hưởng lớn đến trải nghiệm người dùng. Cuối cùng, không thể thiếu các nút kêu gọi hành động (CTA) và đảm bảo tính bảo mật cho website.
Khi áp dụng các nguyên tắc thiết kế website, cần tuân thủ một số lưu ý nhất định. Trước hết, cần đảm bảo tính nhất quán trong toàn bộ thiết kế, từ giao diện đến nội dung. Hạn chế lạm dụng các hiệu ứng hình ảnh hoặc giao diện quá rườm rà, thay vào đó lựa chọn màu sắc phù hợp và điều hướng website linh hoạt, dễ sử dụng. Sử dụng từ ngữ đơn giản, dễ hiểu cũng là một lưu ý quan trọng. Cuối cùng, ưu tiên tạo trải nghiệm dễ dàng theo dõi quá trình bán hàng.
Tóm lại, việc tuân thủ các nguyên tắc thiết kế website cơ bản và hiệu quả như xác định mục tiêu, lựa chọn giao diện, sử dụng nội dung chất lượng, [tối ưu SEO website](https://terusvn.com/thiet-ke-website-tai-hcm/), đảm bảo tính di động và bảo mật... sẽ giúp website trở nên chuyên nghiệp, hấp dẫn và mang lại kết quả tối ưu cho doanh nghiệp. Các lưu ý khi áp dụng những nguyên tắc này cũng không kém phần quan trọng, giúp tăng tính nhất quán, đơn giản hóa và cải thiện trải nghiệm người dùng.
Tìm hiểu thêm về [Các Nguyên Tắc Để Có Thể Thiết Kế Website Hiệu Quả](https://terusvn.com/thiet-ke-website/nhung-nguyen-tac-thiet-ke-website/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,691 | How To Do Clean Code | WARNING: All information in this post is nothing more than opinions, anything that you disagree with... | 0 | 2024-07-06T13:59:05 | https://dev.to/ezpieco/how-to-do-clean-code-4g89 | WARNING: All information in this post is nothing more than opinions, anything that you disagree with can be commented on, but keep in mind, that everything mentioned is just an opinion
You read the title you know what's coming and it's time to get toxic!
## What does Clean Code mean?
OK, first of all, what does it mean? What does Clean code even mean? Is it a practice? Is it a principle? Or is it something created out of thin air as always?
Well, that's debatable. To some, clean code is like their guidebook to coding in a team, while to some it's a way to make their code look more professional.
But the sad reality is, it just doesn't matter!
Many people focus on clean code as a way for them to make their code look more readable, but does readability matter? Who on earth is even going to read your code other than your co-workers who have worked on the codebase alongside you and know what each line of code is about, they know what function `ScreeenResolution()` does as much as you know, they know what you mean by, "Should we change the size to 4 by 3?" So why does it even matter to make your code readable?
It's not about readability it's about familiarity, that's why the new guy's code is always checked before accepting the PR, and the old guy's code is not even seen and accepted, because everyone knows that the old man has been working in the codebase for over 69 years.
But still, what is clean code?
Now I want you to know, that it's not a guidebook, but rather something that a team can understand and follow, it's the companies style guide that matters and not the common ideas that everyone accepts, because again, who is going to read your code other than your co-workers!
## How to really clean code
Now that we are clean with what clean code is, it's time to check out how to do it, because that's the main topic after all.
Now for this purpose I will take a simple example, it's a basic Fibonacci series:
```python
def F(n):
r = [0, 1]
while len(r) < n:
r.append(r[-1] + r[-2])
print(r[:n])
F(10)
```
Now to many, this makes sense... of course like after reading the code. Now keep in mind clean code is useful and not useful under certain conditions, and wait let me get there.
This code makes sense if you get used to it, that's getting familiar with the codebase, but at the same time, it's so utter garbage that even JavaScript looks better in front of this thing. This is where clean code would make sense, where you need not make your one function uses 10 - 15 helper function, but rather one self-explanatory function that doesn't require much hard work.
Let's try making this self-explanatory and one with 10 helper functions and compare which is better.
First of all, what's the problem here? The problem is those variable naming, all the variables are named using 1 char, and if you have ever written code with variables named using 1 char, you know how soon you will run out of names... 26 chars later.
So let's give it some clear names:
```python
def FibonacciSeriesGenerator(numberOfTerms):
fibonacciSeries = [0, 1]
while len(fibonacciSeries) < numberOfTerms:
fibonacciSeries.append(fibonacciSeries[-1] + fibonacciSeries[-2])
print(fibonacciSeries[:numberOfTerms])
FibonacciSeriesGenerator(69)
```
Now keep in mind, that I have used naming conventions that I use for [Lambda](https://github.com/ezpie1/lambda-official)... yeah you know I will advertise here, it's my post my well.
OK, just a short ad I promise.
Are you tired of using Facebook? Or maybe X? Or Instagram? Or just tired of the fact that these companies focus only on the money and invade your privacy for more money? Then you, my petit une, you need to use Lambda! Lambda is an open-source privacy-based social media app that prioritizes your privacy and does not collect any personal data about you, all we take is your email ID, that too just for creating an account, and you are all done, fully private and secure(that's debatable). Also with open-source collaboration, all the features in the app are what you request, so yeah kill me by filling the issue tab with a lot of feature requests, but hey, I didn't create any issue template, so screw you!
OK, so where were we? Yeah, this example uses naming convection that I follow and recommend to be followed in the lambda codebase. So naming convection is pretty much something you and your team need to decide on.
And that's it! That's all clean code is, just use proper naming convection and make your code self-explanatory, that's all for today! Bye!
Yeah, no, no bye for you, there's more to it.
This isn't all in clean code, writing clean code also means a lot more, it can also mean that your code is maintainable, scaleable, and reusable (that's also debatable!)
Say we take that Fibonacci example:
```python
def FibonacciSeriesGenerator(numberOfTerms):
fibonacciSeries = [0, 1]
while len(fibonacciSeries) < numberOfTerms:
fibonacciSeries.append(fibonacciSeries[-1] + fibonacciSeries[-2])
print(fibonacciSeries[:numberOfTerms])
FibonacciSeriesGenerator(69)
```
If you see it still lacks something, it's not maintainable, you know why we have code testing as a tool? No, it's not for 100% code coverage, it's so that we can accept PRs that we don't want to read but still want to be sure that the code won't fail in production.
Now of course I made that part up, but still, imagine going through 10 files of code, each having 15 changes and you have no idea what you are seeing, how are you going to be sure that this won't cause you to die? You need to test it somehow, of course, you also will need to check and make sure that the test suits are not changed, then that's a real problem.
So how can we make something testable? Well, we can just write some tests and check it out, but that's too dumb to do for this example because everyone knows when you `print` something it doesn't get stored in a variable that you can assert. And yes the print statement is the problem in this part.
```python
def FibonacciSeriesGenerator(numberOfTerms):
fibonacciSeries = [0, 1]
while len(fibonacciSeries) < numberOfTerms:
fibonacciSeries.append(fibonacciSeries[-1] + fibonacciSeries[-2])
return fibonacciSeries[:numberOfTerms]
FibonacciSeriesGenerator(69)
```
Now that's something we can test. Now anything done to this code will be checked using the test suit, now of course, all one needs to do is not change anything in the file and just add malicious code, and if you get lucky some dumb idiot will accept the PR, and voila! You did it! You destroyed Googal!
Yeah, hopefully, that doesn't happen.
Now let's think about it, let's think about scalability, we have this code quite maintainable, it is self-explanatory, the function name clearly tells what the code is about, the naming conventions helps out a lot, and using return rather than print, we can now skip reading other people's code and keep accepting it if it passes all tests! But what about scalability?
Think about it, how can you make your code scalable? In fact, what makes code scale?
### Thinking of Scaling
What is scaling? Scaling is all about how well can a system handle requests, say you have a homemade server running, and it is capable of handling 10 requests/sec, now imagine you have to handle more than 10 requests/sec, say 11, even with just 1 more request your entire server will take decades to execute "hello world" on the user's screen, and now that's a crucifixion!
How can you make it handle more requests? One way would be to just have more servers and have a load balancer handle sending all requests to a server with less load and control the flow of it. But say you want to go cheap, you can, but using these tactics:
**Efficient Algorithm:** It matters, it matters quite a lot, having an algorithm that runs in under 10ms vs another algorithm executing in 20ms, is quite a big difference. It doesn't look much, but it is quite a difference. O(n) is better than O(n^2).
**Parallel code:** Imagine if you had to handle 10 people's orders at one time, how hard can it be right? It's better to spend some time on getting more waiters than just 1, the same can be said for code if you can make your code execute in parallel, that is if you can split your code and make it run in smaller chunks at the same time. It's sort of like concurrency.
Now there are a lot of other things you can do, but hey, it's tactics, not a strategy OK?
### Back to the show
OK now that we know what scalability is, what can we do to make the Fibonacci scalable? Well, nothing much can be done it took me a whole day figuring it out, we can use an efficient algo... data structure! You guessed it right! It's not the algorithm that's the problem it's the data structure, and yes data structures also matter ok? Take a hashmap for instance, it's fast, it's gold, it's blazing fast, it's gold and did I mention it's gold?
Wait hashmap for a Fibonacci series? How?
Well if that's your question, don't worry it was my question too, before I tried it, and guess what, it got faster, why? Well because you see, every time we generate a Fibonacci series we are following a certain rule, and no matter what number of terms you ask for the previous ones would be the same at all costs, it will always start from 0, 1, 1, 2... and so on, it can't change right? So why not just do some lookup at a hashmap and get all the numbers till the target term, if the target term is not reached, then do the maths and add those new Fibonacci numbers into the hashmap too! Simple isn't it? Just that it wasn't obvious, so yeah just test it out sometimes and here you have it, a Fibonacci series generator that uses hashmap.
```python
def FibonacciSeriesMapper(indexOfTerm, memo={0: 0, 1: 1}):
if indexOfTerm not in memo:
memo[indexOfTerm] = FibonacciSeriesMapper(indexOfTerm - 1, memo) + FibonacciSeriesMapper(indexOfTerm - 2, memo)
return memo[indexOfTerm]
def FibonacciSeriesGenerator(numberOfTerms):
return [FibonacciSeriesMapper(i) for i in range(numberOfTerms)]
print(generateFibonacciSeries(69))
```
Now here I am using 2 different functions that make sense to me, because it's easier to get hold of what's going on, we have a mapper function that maps all the terms into a hashmap, yes a hashmap is a dictionary in python and all other lamguages call it what so ever, and we have the make generator function that generates the series. We have the hashmap named memo, of course, we could have named it `fibonacciSeriesMemorise` or `fibonacciSeries`, yes we could have also named `indexOfTerm` better, such as `fibonacciNumber` which would have made more sense to everyone, but this is more about familiarity, I am more familiar with those string then with those you all maybe with, but at the end, it matters on who will be working on the codebase, if it's an open-source project, just like [lambda](https://github.com/ezpie1/lambda-official), then it needs to have naming that everyone can understand rather then just a specific group of people, the developers.
So at the end we can have this fibonacci thing like so:
```python
def FibonacciSeriesMapper(fibonacciNumber, fibonacciSeries={0: 0, 1: 1}):
if fibonacciNumber not in fibonacciSeries:
fibonacciSeries[fibonacciNumber] = FibonacciSeriesMapper(indexOfTerm - 1, fibonacciSeries) + FibonacciSeriesMapper(fibonacciNumber - 2, fibonacciSeries)
return fibonacciSeries[fibonacciNumber]
def FibonacciSeriesGenerator(numberOfTerms):
return [FibonacciSeriesMapper(i) for i in range(numberOfTerms)]
print(generateFibonacciSeries(69))
```
And there you have it, a self-explanatory code that is scalable, maintainable, and testable.
Now keep in mind I didn't go with the limit per line rule, the 80 chars per line rule, so yeah it kind of exceeds that... yeah... that's also a problem.
Of course, this thing can be improved further... ah, who am I kidding, no it can't be OK. It's in it's best form! The best of the best form! And all this took me literally a whole week of writing and reading, it hurts my brain cells now! Even my carpal tunnel is starting to hurt! AHHH!!!!
## The stupid clean code
Now let's take a look into the dumb stupid version of clean code, the version that tends to use 100s of functions just for print Hello World.
Let's take that fibonacci and make it an Apache hell.
I am not really that good at writing clean code, so I had to ask GPT to make some hectic version of the Fibonacci series in python and here it is, just a disclaimer, it's hectic indeed;
```python
def initialize_fib_series():
return [0, 1]
def reached_desired_length(fib_series, numberOfTerms):
return len(fib_series) >= numberOfTerms
def calculate_next_fib(fib_series):
return fib_series[-1] + fib_series[-2]
def append_to_series(fib_series, next_fib):
fib_series.append(next_fib)
def get_number_of_terms():
return 69 # Adjust this to change the number of terms
def generate_fibonacci_series(numberOfTerms):
fib_series = initialize_fib_series()
while not reached_desired_length(fib_series, numberOfTerms):
next_fib = calculate_next_fib(fib_series)
append_to_series(fib_series, next_fib)
return fib_series
def print_fib_series(fib_series):
print(fib_series)
def main():
number_of_terms = get_number_of_terms()
fib_series = generate_fibonacci_series(number_of_terms)
print_fib_series(fib_series)
main()
```
Of course, this makes sense, why won't it? Just that it's so much code and refactor, that it just looks unnecessary. And yes no one writes code like this, but it's only for demonstration purposes, don't try this at home, it's just too dangerous to do. Now keep in mind this is a possible edge case that can happen this is the kind of code that Uncle Bob, creator of clean code, says he wants code to look kind of like this, where each function is limited to 5 - 7 lines of code, can you imagine? Your entire function refactored into 100s of functions just for having each function with 6 lines of code?
Anyway that's all about clean code, of course, I haven't covered some other topics about clean code, stuff like dependency, singleton and other stuff, but hey, that's the SOLID principle that I hate the most!
In case I haven't covered stuff that you wanted to be here, or maybe you want to get some more info, just comment below and I will explain that thing you asked and only that thing nothing more!
WARNING: Once again all content you just read is only opinion, it doesn't mean to harm or kill anyone, it is just an opinion so don't rost me reddit on this post.
| ezpieco | |
1,913,814 | Website Là Gì? Tại Sao Website Lại Quan Trọng | Website đã trở thành một phần không thể thiếu trong cuộc sống hiện đại. Nó không chỉ là một công cụ... | 0 | 2024-07-06T13:56:06 | https://dev.to/terus_technique/website-la-gi-tai-sao-website-lai-quan-trong-468 | website, digitalmarketing, seo, terus |
Website đã trở thành một phần không thể thiếu trong cuộc sống hiện đại. Nó không chỉ là một công cụ để chia sẻ thông tin mà còn là một nền tảng để kinh doanh, tương tác và kết nối mọi người trên toàn thế giới.
Website là một tên miền chứa nội dung liên quan và được xuất bản bởi một hoặc nhiều máy chủ. Nó là tập hợp các trang chứa văn bản, hình ảnh, video, âm thanh và các phần tử khác. Các trang web thường chỉ được lưu trữ trên một tên miền hoặc tên miền phụ và chỉ có thể được truy cập thông qua internet. Website có thể là tệp HTML hoặc XHTML có thể truy cập được qua giao thức HTTP hoặc HTTPS, và có thể được tạo bằng nhiều ngôn ngữ lập trình khác nhau.
Trong thời đại số hóa, việc sở hữu một website trở nên cực kỳ quan trọng. Website giúp tăng tính chuyên nghiệp, nâng cao mức độ tương tác với khách hàng, cải thiện khả năng tiếp cận và tiếp thị sản phẩm/dịch vụ, và tạo dựng thương hiệu.
[Dịch vụ thiết kế website chuyên nghiệp](https://terusvn.com/thiet-ke-website-tai-hcm/) tại Terus có thể giúp bạn [thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website-tai-hcm/), đáp ứng đầy đủ các yêu cầu về giao diện, tính năng và trải nghiệm người dùng. Đội ngũ chuyên gia của chúng tôi sẽ hướng dẫn và hỗ trợ bạn trong suốt quá trình xây dựng và vận hành website.
Tìm hiểu thêm về [Website Là Gì? Tại Sao Website Lại Quan Trọng](https://terusvn.com/thiet-ke-website/website-la-gi/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,813 | Create a Simple ChatBot with Mesop + Ollama less than 25 lines | In this post, I will show you how to create a simple chatbot with Mesop and Ollama. What is... | 0 | 2024-07-06T13:54:35 | https://dev.to/0xkoji/create-a-simple-chatbot-with-mesop-ollama-less-than-25-lines-2c9l | python, ai, google | In this post, I will show you how to create a simple chatbot with Mesop and Ollama.
## What is Mesop?
https://google.github.io/mesop/
Quickly build web UIs in Python
Used at Google for rapid internal app development
Mesop is like Gradio or Streamlit.
## Step0 Install Ollama
You can download Ollama from the following link.
https://ollama.com/download
## Step1 Install dependencies
```shell
pip install mesop ollama
```
## Step2 Write a chatbot
`app.py`
```python
import ollama
import mesop as me
import mesop.labs as mel
@me.page(
path="/",
title="Mesop ChatBot",
)
def page():
mel.chat(transform, title="Ollama ChatBot with Mesop", bot_user="Mesop Bot")
def transform(input: str, history: list[mel.ChatMessage]):
messages = [{"role": "user", "content": message.content} for message in history]
messages.append({"role": "user", "content": input})
stream = ollama.chat(model='llama3', messages=messages, stream=True)
for chunk in stream:
content = chunk.get('message', {}).get('content', '')
if content:
yield content
```
## Step3 Run Chatbot
```shell
mesop app.py
```
| 0xkoji |
1,913,812 | Trải Nghiệm Người Dùng (UX) Là Gì? Cách Tối Ưu Hiệu Quả | Trải nghiệm người dùng (User Experience - UX) là một khái niệm quan trọng trong thiết kế website. Nó... | 0 | 2024-07-06T13:51:50 | https://dev.to/terus_technique/trai-nghiem-nguoi-dung-ux-la-gi-cach-toi-uu-hieu-qua-kj7 | website, digitalmarketing, seo, terus |
Trải nghiệm người dùng (User Experience - UX) là một khái niệm quan trọng trong thiết kế website. Nó đề cập đến cảm nhận, cách thức và phản ứng của người dùng khi tương tác với sản phẩm số. Trải nghiệm này bao gồm các yếu tố như sự dễ sử dụng, tính thẩm mỹ, hiệu suất và độ tin cậy.
Tối ưu hóa trải nghiệm người dùng là rất quan trọng đối với các doanh nghiệp vì nó ảnh hưởng đến nhiều khía cạnh khác nhau:
Tính chuyên nghiệp của doanh nghiệp: Trải nghiệm tốt giúp tạo ấn tượng chuyên nghiệp, tin cậy và thu hút khách hàng.
Giảm tỷ lệ thoát - tăng tỷ lệ giữ chân khách hàng: Trải nghiệm người dùng tốt giúp giảm số lượng khách hàng rời bỏ website, đồng thời tăng số lượng khách hàng trung thành.
Tăng tỷ lệ chuyển đổi: Khi trải nghiệm người dùng được tối ưu, họ sẽ dễ dàng hoàn thành các hành động mong muốn, như đăng ký, mua hàng, liên hệ...
Để tối ưu hóa trải nghiệm người dùng, các doanh nghiệp có thể áp dụng những cách sau:
Thấu hiểu người dùng: Nghiên cứu và phân tích nhu cầu, hành vi và mong đợi của khách hàng.
[Thiết kế website chuẩn giao diện người dùng](https://terusvn.com/thiet-ke-website-tai-hcm/): Tạo ra giao diện trực quan, dễ hiểu và dễ sử dụng.
Cung cấp nội dung chất lượng cao: Đảm bảo nội dung website luôn hữu ích, đáng tin cậy và cập nhật.
Đảm bảo website hoạt động nhanh chóng và ổn định: Tối ưu hiệu suất và độ tin cậy để tránh gây phiền toái cho người dùng.
Thu thập phản hồi của người dùng: Lắng nghe và phản hồi kịp thời các ý kiến, góp ý của khách hàng.
Sử dụng thử nghiệm người dùng: Tiến hành các buổi thử nghiệm với người dùng để đánh giá và cải thiện trải nghiệm.
Phân tích dữ liệu người dùng: Thu thập và phân tích dữ liệu về hành vi, nhu cầu người dùng để đưa ra cải tiến phù hợp.
Giữ cho website luôn mới mẻ: Cập nhật giao diện, tính năng và nội dung thường xuyên để đáp ứng nhu cầu người dùng.
Cung cấp dịch vụ khách hàng tuyệt vời: Đảm bảo hỗ trợ khách hàng nhanh chóng, tận tình và hiệu quả.
[Tối ưu hóa trải nghiệm người dùng website](https://terusvn.com/thiet-ke-website-tai-hcm/) đóng vai trò then chốt trong việc xây dựng sự tin tưởng, tăng tỷ lệ chuyển đổi và giữ chân khách hàng - những yếu tố then chốt cho sự thành công của doanh nghiệp trong thời đại số. Các doanh nghiệp cần liên tục theo dõi, phân tích và cải thiện trải nghiệm người dùng để đảm bảo sự hài lòng và lòng trung thành của khách hàng.
Tìm hiểu thêm về [Trải Nghiệm Người Dùng (UX) Là Gì? Cách Tối Ưu Hiệu Quả](https://terusvn.com/thiet-ke-website/trai-nghiem-nguoi-dung-la-gi/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,811 | Functional Patterns: The Monad | This is the final part of a series of articles entitled Functional Patterns. Make sure to check out... | 0 | 2024-07-06T13:46:27 | https://dev.to/if-els/functional-patterns-the-monad-cc2 | python, haskell, learning, programming | > This is the final part of a series of articles entitled *Functional Patterns*.
>
> Make sure to check out the rest of the articles!
>
> 1. [The Monoid](https://dev.to/if-els/functional-patterns-the-monoid-22ef)
> 2. [Compositions and Implicitness](https://dev.to/if-els/functional-patterns-composition-and-implicitness-4n08)
> 3. [Interfaces and Functors](https://dev.to/if-els/functional-patterns-interfaces-and-functors-359e)
> 4. [Recursion and Reduces](https://dev.to/if-els/functional-patterns-recursions-and-reduces-jhk)
> 5. [Zips and the Applicative](https://dev.to/if-els/functional-patterns-zips-and-the-applicative-14om)
## What's the problem?
> A monad is just a monoid in the category of endofunctors, what's the problem?
Is a quote from [A Brief, Incomplete, and Mostly Wrong History of Programming Languages](http://james-iry.blogspot.com/2009/05/brief-incomplete-and-mostly-wrong.html), when he mentioned Haskell.
Though memed throughout the times, this statement actually manages to hold some truth to it still, being a pretty good description on what *monads* are.
No pattern had *fascinated* me more than the Monad, and for a while I had obssessed over being able to understand it, only for it to slip out of my grasp every single time. Monads had been so notable to me as there's a long running joke that monads are a mystery— because when you learn it, you forget all ability to teach and describe it.
For a while I had been reading about this pattern that kept getting *praised* in the functional programming community, but I hadn't come across a definition— an explanation, that did *it* for me.
But somewhere along that road, after all those times sunk into understanding this pattern— I felt like I could comfortably say that I had reached an understanding on it. It stopped being an "Aha! I think I got it!"
And that really was the motivation behind this article series, to help curious individuals tackling this niche I devled into a year prior, have a better time than I did. I told myself:
> Six articles, building up to a decent explanation on the Monad.
And here we are. I hope I hadn't lost you on the way here, but we've made it. What's left now is tackling the main pattern itself.
## In the Category of Endofunctors
Let's slowly take apart the quote describing monads.
> ... in the *category* of *endofunctors*.
These are terms we had already encountered, and what this is telling us is that the `Monad` *deals* with endofunctors, not any normal value we're used to. Let's take a look at its Haskell definition.
```hs
class Applicative m => Monad m where
(>>=) :: m a -> (a -> m b) -> m b
return :: a -> m a
-- ...
```
There it is! We see that to be a `Monad`, you first must be under the `Applicative` typeclass (which are endofunctors that can be applied using `<*>`), which further requires you be under the `Functor` type class in the first place (you can map `endofunctors` using `fmap`).
So, like the article on `Functor` and `Applicative`, we are going to be talking about functions applying onto some data type, some struct, we have defined. Notably using this `>>=` operator here, also referred to as `bind`.
We also have this function `return`, which should already be pretty familiar to us.
```hs
class Functor f => Applicative f where
pure :: a -> f a
-- ..
class Applicative m => Monad m where
return :: a -> m a
-- ..
```
It's essentially an alias for our `pure` function previously defined in `Applicative`! Surely there has to be a reason why it's called `return` now? We'll discover that shortly.
## A Monoid
Recall our definition of a `Monoid`.
> A type is said to be a Monoid over some binary function or operation if the result remains within the domain of the type, AND there exists an identity element.
That can only mean one thing, a `Monad` is just defining some *binary* operation *over* endofunctors! This is the next piece of our puzzle, let's take a look at the definition of `bind` specifically:
> If you're a bit confused, remember that a `Monoid` is merely an interface that requires you have an operation that takes two arguments of the same type, and produce the same type. This is why we can say `+` is a Monoid over `Int`, and also `Int` is a monoid over `+`.
```hs
class Applicative m => Monad m where
(>>=) :: m a -> (a -> m b) -> m b
-- ..
```
We see that `bind` is not only a *binary* function, but also that it returns a data type `m b`, which corresponds to the same category as our input `m a`, despite them having differing internal types— this has to be our `Monoid` operation! Let's compare it with the other operations defined in the previous type classes leading up to it, renaming all type constructors as `f`, for clarity.
```hs
(<$>) :: (a -> b) -> f a -> f b -- fmap
(<*>) :: f (a -> b) -> f a -> f b -- apply
(>>=) :: f a -> (a -> f b) -> f b -- bind
```
Let's add a few spaces to highlight the pattern and swap out `>>=` with `=<<`, its flipped equivalent (arguments are swapped places).
```hs
(<$>) :: (a -> b) -> f a -> f b
(<*>) :: f (a -> b) -> f a -> f b
(=<<) :: (a -> f b) -> f a -> f b
```
So we see that they all in fact *deal* with some functor, but in slightly different ways.
- `fmap` takes a *function* and then a *wrapped* value, mapping the function *over* the wrapped value.
- `<*>` takes a *wrapped* function and a wrapped value, applying the wrapped function over the wrapped value.
- `>>=` takes a wrapped value, a function that *returns* a wrapped value, and then returns that wrapped value.
Moreover, because it is a monoid *over* endofunctors, this means:
- We can chain these together *associatively*
- Our final return type is an endofunctor in the *same* category
- which in turn means, our final type *stays* in the same category.
## Monads in Practice
Lets say we have an arbitrary *cipher*, wherein characters in the alphabet are converted to any other arbitrary character in the alphabet. We keep this cipher as a *dictionary* (also known as a *hashmap*) that takes an encoded `Char` and returns the decoded `Char`.
```hs
import qualified Data.Map as M
cipher :: M.Map Char Char
cipher = undefined -- definition omitted
```
Now we create a `decode` function, remember that this operation *might* fail (when the key doesn't exist), so we have to use the `Maybe` data type.
```hs
decodeChar :: Char -> Maybe Char
decodeChar = (`M.lookup` cipher) -- wrapping in backticks turn a function into infix form
-- so we're partially applying the second argument
-- equivalent to:
-- decodeChar = flip M.lookup cipher -- C-combinator, flips the arguments
```
`M.lookup` is a function that, well, does a lookup on a `M.Map`, with your given key (in this case our encoded `Char`), and returns a `Maybe Char`, because the key might not exist in the `M.Map` in which case it will return a `Nothing`.
Now say we want to *then* lowercase the resulting characters of our decoding. We would have to compose `toLower` function to our call, but there's one issue!
```hs
toLower :: Char -> Char
```
`toLower` doesn't take a `Maybe Char`! If we recall the available functor composers we have, this is actually no problem as this is just an `fmap`.
```hs
decodeChar = fmap toLower . (`M.lookup` cipher)
-- or even ...
-- we wrap the function in Maybe, then apply using `<*>`
decodeChar = (pure toLower <*>) . (`M.lookup` cipher)
```
Now say we want to convert our lowercased character into its **ASCII** value, we would have to do *another* composition on `fmap`.
```hs
decodeChar :: Char -> Maybe Int
decodeChar = fmap ord . fmap toLower . (`M.lookup` cipher)
```
And we can continue this for god knows how long, but the issue is starting to rear its head. This type of composition is kind of annoying to write! Let's try to write it using `Maybe`'s Monad `bind`.
```hs
decodeChar :: Char -> Maybe Int
decodeChar c =
M.lookup c cipher
>>= return . toLower
>>= return . ord
```
This works! And is so much cleaner. We can see `return` make its appearance here, and the reason it's called `return`, is not because it *returns* value in the imperative sense, but because it's usually the last call you make inside a function required by `bind`, because you have to *return* to your Monad type!
Let's think about that even deeper and realize that the reason we have to *return* to our Monad is because: while we're inside the function required by our `bind`, we implicitly *"unwrap"* our value, so we can do our own logic on it, before rewrapping it at the end, so we can now completely abstract "unwrapping"!
> Note the double-quotes on *unwrapping*, it's because we *aren't* actually unwrapping the value, as that might cause a runtime error depending on your data type's logic (unwrapping a `Nothing` causes an error).
```hs
decodeChar :: Char -> Maybe Int
decodeChar c =
M.lookup c cipher
>>= return . ord . toLower
```
So now we can do our usual compositions, inside our Monad type! Moreover, Haskell has an even more legible syntax for this, the `do`.
```hs
decodeChar :: Char -> Maybe Int
decodeChar c = do
decoded <- M.lookup c cipher -- Make value inside Maybe accessible
return . ord . toLower $ decoded
```
And in this form, the return being at the end of the call even resembles an *imperative* language!
Note that because we've done our functions without unwrapping, we never risk unwrapping into a runtime error! Moreover, when you implement a `Monad`, it's up to you how you want to do their compositions, as long as you follow the 3 axioms of *left-identity*, *right-identity*, and *associativity*!
> These axioms won't be covered here, but they shouldn't get in your way that often (and you'll rarely need to implement a monad in the first place)
```hs
concat . map (replicate 2) $ [1, 2, 3] -- [ 1, 1, 2, 2, 3, 3 ]
concatMap (replicate 2) $ [1,2,3]
-- `bind` for the List monad is equivalent to `concatMap`!
[1,2,3] >>= replicate 2
```
## Imperatively speaking,
> But how is the concept of the Monad relevant to languages outside of Haskell and other functional languages? Is it relevant?
First of all, it's not all about you, imperative programmer! Second, leveraging the concept of monads allow us to write *succinct* (well, after you write the code to force FP into your imperative program), and *chainable* code.
Behold, the `Maybe` monad in Python:
```python
class Maybe:
def __init__(self, value) -> None:
self.value = value
@staticmethod
def just(value):
return Maybe(value)
@staticmethod
def nothing():
return Maybe(None)
def __str__(self) -> str:
match self.value:
case None:
return "Nothing"
case x:
return f"Just {x}"
def __eq__(self, other) -> bool:
return self.value == other.value
def bind(self, *fns):
for fn in fns:
if self.value == None:
return self.nothing()
self.value = fn(self.value).value
return self.just(self.value)
def search(n, lst) -> Maybe:
for i, v in enumerate(lst):
if v == n:
return Maybe.just(i)
return Maybe.nothing()
```
```python
result = search(4, [3, 4, 2]).bind(lambda a: Maybe.just(a+5))
print(result) # Just 6
result = search(5, [3, 4, 2]).bind(lambda a: Maybe.just(a+5))
print(result) # Nothing
```
Incredible and outrageous. *Just* the perfect mix.
---
And that just about does it! I hope you enjoyed this entire series, it has been about a year in the making. I hope you learned something, and most importantly, enjoyed the time you invested! If you have any questions, feel free to contact me in my socials, or in the comments down below, I will try to make time.
> What's the problem?
---
I'd like to thank Sharmaigne for proof-reading, [Tsoding](https://www.youtube.com/@TsodingDaily) for being a very helpful resource, and myself for actually committing to this grind. | if-els |
1,913,810 | Cách Tối Ưu Tốc Website Hiệu Quả, Nhanh Chóng | Tốc độ website, nó không chỉ ảnh hưởng đến trải nghiệm của người dùng mà còn là một chỉ số mà Google... | 0 | 2024-07-06T13:46:10 | https://dev.to/terus_technique/cach-toi-uu-toc-website-hieu-qua-nhanh-chong-4c24 | website, digitalmarketing, seo, terus |
Tốc độ website, nó không chỉ ảnh hưởng đến trải nghiệm của người dùng mà còn là một chỉ số mà Google sử dụng để đánh giá tính thân thiện với người dùng của website. Điều này có thể ảnh hưởng đến xếp hạng website của bạn trên Google Search.
Trải nghiệm của người dùng và lòng trung thành của khách hàng sẽ bị ảnh hưởng trực tiếp bởi các yếu tố như tốc độ website, thời gian tải và khả năng đáp ứng các yêu cầu của người dùng. Sự nhanh chóng của website ảnh hưởng đến sự hài lòng của người dùng.
Việc [tối ưu thời gian tải website](https://terusvn.com/thiet-ke-website-tai-hcm/) của bạn cũng ảnh hưởng đến khả năng người dùng tìm thấy website. Khi xếp hạng website, Google xem xét một số yếu tố, một trong số đó là tốc độ website. Các website có trải nghiệm người dùng tồi tệ sẽ giảm quảng cáo trong kết quả tìm kiếm của Google.
Một yếu tố quan trọng ảnh hưởng đến hiệu quả SEO cũng như trải nghiệm người dùng là [tối ưu tốc độ website](https://terusvn.com/thiet-ke-website-tai-hcm/). Một website có tốc độ tải trang nhanh sẽ làm tăng sự hài lòng của người dùng, tăng khả năng quay lại trang và cải thiện thứ hạng trong kết quả tìm kiếm. Dưới đây là 19 lời khuyên hiệu quả để tăng tốc độ website:
Sử dụng Mạng phân phối nội dung (CDN)
Di chuyển website của bạn sang một máy chủ lưu trữ tốt hơn
Tối ưu hóa kích thước hình ảnh trên website của bạn
Giảm số lượng plugin và extension không cần thiết
Giảm thiểu số lượng tệp JavaScript và CSS
Sử dụng bộ nhớ đệm website
Triển khai nén Gzip
Tối ưu hóa cơ sở dữ liệu trong CMS
Giảm việc sử dụng phông chữ web
Phát hiện lỗi 404
Giảm chuyển hướng
Sử dụng kỹ thuật tìm nạp trước
Thực hiện phương pháp tiếp cận ưu tiên các thiết bị di động
Chọn Theme phù hợp
Sử dụng Google PageSpeed
Loại bỏ hoặc giảm bớt các quảng cáo trên website
Sử dụng Cache Plugin
Nâng cấp PHP
Bật nén Brotli của Google
Nhìn chung, tốc độ tải trang là một yếu tố quan trọng không thể bỏ qua khi xây dựng và vận hành một trang web WordPress. Một trang web tải chậm không chỉ ảnh hưởng đến trải nghiệm người dùng, mà còn có thể gây ra những tác động tiêu cực đến kết quả tìm kiếm và hiệu quả của các chiến dịch tiếp thị trực tuyến.
Tìm hiểu thêm về [Cách Tối Ưu Tốc Website Hiệu Quả, Nhanh Chóng](https://terusvn.com/thiet-ke-website/tips-toi-uu-toc-do-website/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,809 | Building a Local AI Chatbot with Gemini Nano, Chrome Canary, Angular, and Kendo AI Prompt | The race for AI continues. Alternatives like Ollama help us interact with AI models on our machines.... | 0 | 2024-07-06T13:43:09 | https://www.danywalls.com/building-a-local-ai-chatbot-with-gemini-nano-chrome-canary-angular-and-kendo-ai-prompt | angular, frontend, ai, kendo | The race for AI continues. Alternatives like Ollama help us interact with AI models on our machines. However, the Chrome and Google teams are moving one step forward by enabling Chrome with Gemini Nano running in our browsers.
> Note this API is experimental and works in Chrome Canary
The Chrome team is working to have a small LLM in our browser to perform common and simple tasks without needing an external API like OpenAI or running Ollama to build and interact with an LLM. The API helps us with tasks like summarizing, classifying, and rephrasing. We can read about the API, but a scenario is the best way to learn and see it in action.
## Scenario
We work at a company that wants to create a proof of concept (POC) to interact with common tasks in an LLM model. Our goal is to have a chat where users can ask questions or choose from a list of common questions.
## How can we do it?
- Use Angular 18 and Kendo AI Prompt to build a clean interface.
- Use Gemini Nano in Chrome Canary LLM interaction.
Let's get started!
## Enable Gemini Nano in Chrome Canary
First, download and install Chrome Canary https://www.google.com/chrome/canary/ after that enable the Prompt API for Gemini Nano.
Next, activate Gemini Nano in the browser with the following flags.
- chrome://flags/#prompt-api-for-gemini-nano
- chrome://flags/#optimization-guide-on-device-model
After activating these options, remember to restart Chrome.
The Gemini Nano takes time to download. To confirm, open Chrome Canary and go to chrome://components. Check if the Optimization Guide On Device Model has version 2024.6.5.2205.
> Note: Thanks to Bezael Pérez feedback, be sure to have at least 2GB of Free space in your machine
After that, we are ready to start coding! Let's go!
## Set Up the Project
First, set up your Angular application with the command `ng new gemini-nano-angular`
```bash
ng new gemini-nano-angular
cd gemini-nano-angular
npm install
```
Kendo UI offers a schematics command to register its Angular Conversational UI
```bash
ng add @progress/kendo-angular-conversational-ui
ℹ Using package manager: npm
✔ Found compatible package version: @progress/kendo-angular-conversational-ui@16.3.0.
✔ Package information loaded.
The package @progress/kendo-angular-conversational-ui@16.3.0 will be installed and executed.
Would you like to proceed? Yes
✔ Packages successfully installed.
UPDATE package.json (1663 bytes)
UPDATE angular.json (2893 bytes)
✔ Packages installed successfully.
UPDATE src/main.ts (295 bytes)
UPDATE tsconfig.app.json (455 bytes)
UPDATE tsconfig.spec.json (461 bytes)
UPDATE angular.json (2973 bytes)
```
Perfect, we have all things configured, let's start to create our chat prompt interface with Kendo AI Prompt.
## Using AI Prompt
We want to build a clean interface to interact with the LLM, so I choose to use [AI Prompt](https://www.telerik.com/kendo-angular-ui/aiprompt). The AI Prompt is a component of Kendo UI that allows us to create a stylish interface for interacting with the LLM. It also includes common actions like copy, retry, or rate the answer, and more.
> I highly recommend checking out the [official docs](https://www.telerik.com/kendo-angular-ui/components/conversational-ui/aiprompt/) with great demos.
The `kendo-aiprompt` comes with a set of child components and properties. First, open the `app.component.html`, remove the default HTML markup, and add two components: `kendo-aiprompt-prompt-view` and `kendo-aiprompt-output-view`.
> Remember to add the `AIPromptModule` in the imports sections.
We customize the `kendo-aiprompt-view` title with the property `buttonText` set to "☺️ Ask your question".
```xml
<h2>Free Local Gemini</h2>
<kendo-aiprompt>
<kendo-aiprompt-prompt-view
[buttonText]="'☺️ Ask your question'"
/>
<kendo-aiprompt-output-view/>
</kendo-aiprompt>
```
Save changes and run `ng serve -o` and tada!! 🎉 we have our clean chatbot UI ready!
t's time to customize the [kendo-aiprompt](https://www.telerik.com/kendo-angular-ui/components/conversational-ui/aiprompt/) to allow the user to change the activeView, set default suggestions, and, of course, set promptOutputs from the LLM and handle the promptRequest. Let's do it!
## Customize AIPrompt
Open `app.component.ts`. Here, we need to perform the following actions. First, we add the properties. These properties will be bound to the `<kendo-aiprompt>` component to customize and react to changes.
* `view`: to switch between views.
* `promptOutputs`: to get the output from LLM.
* `suggestions`: a list of default text suggestions.
Last, create an empty method `onPromptRequest` to get the text from `kendo-aiprompt.` The final code looks like this:
```javascript
export class AppComponent {
public view: number = 0;
public promptOutputs: Array<PromptOutput> = [];
public suggestions: Array<string> = [
'Tell me a short joke',
'Tell me about Dominican Republic'
]
public onPromptRequest(ev: PromptRequestEvent): void {
console.log(ev)
}
}
```
Next move to the `app.component.html`, and bind `kendo-aiprompt` with the properties and method, the final code looks like:
```javascript
<h2>Free Local Gemini</h2>
<kendo-aiprompt
[(activeView)]="view"
[promptSuggestions]="suggestions"
[promptOutputs]="promptOutputs"
(promptRequest)="onPromptRequest($event)"
>
<kendo-aiprompt-prompt-view
[buttonText]="' ☺️ Ask your question'"
/>
<kendo-aiprompt-output-view/>
</kendo-aiprompt>
```
We have the component ready, but what about LLM and Gemini ?, well we need to create a service to interact with the new API `window.ai.`
## Using `window.ai` API
First, create a service using the Angular CLI `ng g s services/gemini-nano` and open the `gemini-nano.service.ts` file.
Next, declare the private variable `system_prompt`. It adds extra information to the prompt for the LLM.
```javascript
import {Injectable} from '@angular/core';
@Injectable({providedIn: 'root'})
export class GeminiNanoService {
#system_prompt = 'answer in plain text without markdown style'
}
```
Next, create the method `generateText` with a string as a parameter. This method will return a promise from the `window.ai` API. Wrap the body of the method with a try-catch block to handle cases where the user is not using Chrome Canary.
The `window.ai` API provides a set of methods, but in this example, I will use `createTextSession` to enable an LLM session. It returns an instance to interact with the LLM.
Create a new variable `textSession` and store the result from the `window.ai.createSession` method.
```javascript
try {
const textSession = await window.ai.createTextSession();
}
catch (err){
return 'Ups! please use chrome canary and enable IA features'
}
```
Oops, I can't access `window.ai.createTextSession`. I received the error: **Property 'ai' does not exist on type 'Window & typeof globalThis'**.
## The error: Property does not exist on type Window & typeof globalThis
When working with the `Window` type, the definition is in `lib.dom`. However, since `ai` is not defined there, you will encounter the `TS2339: Property ai does not exist on type Window & typeof globalThis` error.
But how do you fix this? Just follow these steps:
1. Create an `index.d.ts` file in the `src/types` directory.
2. Export and declare the `globalWindow` interface, then add the necessary properties. In my case, I declare only the methods needed for this example.
What are the methods of `window.ai`? Open the developer tools in Chrome Canary and type `window.ai`. It will return a list of methods.
We define an interface for each method and type declaration. To save you time, here is the complete AI API type declaration.
```typescript
export {};
declare global {
interface AISession {
promptStreaming: (prompt: string) => AsyncIterableIterator<string>;
prompt: (prompt: string) => Promise<string>;
destroy: () => void;
}
interface AI {
canCreateGenericSession: () => Promise<string>;
canCreateTextSession: () => Promise<string>;
createGenericSession: () => Promise<AISession>;
createTextSession: () => Promise<AISession>;
defaultGenericSessionOptions: () => object;
defaultTextSessionOptions: () => object;
}
interface Window {
ai: AI
}
}
```
Finally, add a reference to the file in the `tsconfig.json` file.
```javascript
"typeRoots": [
"src/types"
]
```
Ok, let's continue working with the `window.ai` api.
The `textSession` object provides the method `prompt` to interact. Before sending the user's question, we combine it with the system prompt to improve our query. We then send the combined prompt to the `session.prompt` method and return the promise.
The final code looks like this:
```javascript
import {Injectable} from '@angular/core';
@Injectable({providedIn: 'root'})
export class GeminiNanoService {
#system_prompt = 'answer in plain text without markdown style'
async generateText(question: string): Promise<string> {
try {
const textSession = await window.ai.createTextSession();
const prompt_question = `${question} ${this.#system_prompt}`;
return await textSession.prompt(prompt_question);
}
catch (err){
return 'Ups! please use chrome canary and enable IA features'
}
}
}
```
We have our service ready so it time to connect with the kendo-ai prompt to make it interactive.
## Interact with LLM
We are in the final step, so we only need to make a small changes in the `app.component.ts`, first inject the `GeminiNanoService`.
Next, we make a change in the `onPromptRequest`, by call the service method `generateText` pass the prompt and wait for the promise return, in the them method, we need to get the response and create a `PromptOut` object and unshift to the `promptOutputs` array and switch to the view one.
The final code looks like:
```javascript
import {Component, inject} from '@angular/core';
import { RouterOutlet } from '@angular/router';
import {GeminiNanoService} from "./services/gemini-nano.service";
import {
AIPromptModule, PromptOutput,
PromptRequestEvent
} from "@progress/kendo-angular-conversational-ui";
@Component({
selector: 'app-root',
standalone: true,
imports: [RouterOutlet, AIPromptModule],
templateUrl: './app.component.html',
styleUrl: './app.component.css'
})
export class AppComponent {
public view: number = 0;
public promptOutputs: Array<PromptOutput> = [];
public suggestions: Array<string> = [
'Tell me a short joke',
'Tell me about dominican republic'
]
private nanoService = inject(GeminiNanoService)
public onPromptRequest(ev: PromptRequestEvent): void {
this.nanoService.generateText(ev.prompt).then((v) => {
const output: PromptOutput = {
id: Math.random(),
prompt: ev.prompt,
output: v,
}
this.promptOutputs.unshift(output);
this.view = 1;
}
)
}
}
```
Save the changes, and now we can interact with Gemini Nano in Chrome Canary!
## Conclusion
We learned how to use Gemini Nano, an experimental local LLM running within Chrome Canary. We build a chat application with Angular 18 and Kendo UI Conversational AI Prompt and run our locally-run chatbot with just a few lines of code.
The fun doesn't stop here. I highly recommend checking out the official website to learn more about the AI API.
* Source: [https://github.com/danywalls/gemini-nano-with-angular](https://github.com/danywalls/gemini-nano-with-angular)
* [https://developer.chrome.com/docs/ai/built-in](https://developer.chrome.com/docs/ai/built-in)
* [https://deepmind.google/technologies/gemini/nano/](https://deepmind.google/technologies/gemini/nano/)
* [https://www.telerik.com/kendo-angular-ui/components/conversational-ui/aiprompt/](https://www.telerik.com/kendo-angular-ui/components/conversational-ui/aiprompt/)
| danywalls |
1,913,793 | BitPower Loop: A blockchain-based decentralized lending smart contract protocol | Introduction Driven by blockchain technology, decentralized finance (DeFi) has become an important... | 0 | 2024-07-06T13:03:50 | https://dev.to/wot_ee4275f6aa8eafb35b941/bitpower-loop-a-blockchain-based-decentralized-lending-smart-contract-protocol-13ge | btc |
Introduction
Driven by blockchain technology, decentralized finance (DeFi) has become an important trend in the field of financial technology. BitPower Loop, as a blockchain-based decentralized lending smart contract protocol, uses smart contract technology to provide a secure, efficient and transparent financial service solution. This article will introduce the core features, operating mechanism and advantages of BitPower Loop in the DeFi ecosystem.
Core features
BitPower Loop is a smart contract protocol deployed on the Ethereum Virtual Machine (EVM). Its main features include:
Decentralization: BitPower Loop is completely decentralized, with no centralized manager or owner, and all operations are automatically executed by smart contracts.
Transparency: All transaction records and smart contract codes are public and transparent, and users can view them at any time.
Security: The immutable nature of blockchain and the automatic execution ability of smart contracts ensure the security of funds and the reliability of transactions.
Efficiency: Automatic processing of lending and liquidity provision through smart contracts greatly improves the efficiency of financial services.
Low cost: Based on the fast transaction speed and low gas fee of Tron blockchain, BitPower Loop has extremely low operating costs.
Operation mechanism
The operation mechanism of BitPower Loop mainly includes the following aspects:
1. Liquidity provision
Users can provide liquidity to the platform through smart contracts, and BitPower Loop will give corresponding returns according to the length of time the liquidity is provided. For example, providing 1 day of liquidity can get a return of 0.4%, and providing 28 days of liquidity can get a return of 24%. This mechanism encourages users to hold assets for a long time and increase the liquidity of the platform.
2. Lending service
BitPower Loop allows users to borrow and lend by mortgaging assets. Borrowers need to provide corresponding collateral, and the platform automatically manages the value of the collateral and the loan amount through smart contracts to ensure the safety and stability of the loan.
3. Automated income distribution
All income and returns are automatically distributed through smart contracts, and users can get the income they deserve without manual operation. This automated mechanism not only improves efficiency, but also reduces the risk of human operation.
4. Referral Rewards
BitPower Loop has a unique referral reward mechanism. Users can invite new users to join through personal referral links and receive referral rewards at different levels. The proportion of referral rewards is calculated based on the referral level and liquidity amount, and up to 21 levels of rewards can be obtained. This mechanism effectively encourages users to promote the platform and expand the user base.
Advantages
BitPower Loop's advantages in the DeFi ecosystem are mainly reflected in the following aspects:
Complete decentralization: There is no centralized manager or owner, and all decisions and operations are automatically executed by smart contracts, ensuring the fairness and transparency of the platform.
High yield: By providing liquidity and participating in lending, users can obtain high returns, especially for users who hold assets for a long time, the returns are more significant.
Safe and reliable: The automatic execution of smart contracts and the immutability of blockchain ensure the security of funds and the reliability of transactions.
Convenient and efficient: Automated operating procedures and low-cost transaction fees allow users to participate in the DeFi ecosystem quickly and easily.
Broad community support: Through the referral reward mechanism, BitPower Loop has established a broad user community, promoting the rapid development and popularization of the platform.
Conclusion
As a blockchain-based decentralized lending smart contract protocol, BitPower Loop is injecting new vitality into the DeFi ecosystem through its unique operating mechanism and significant advantages. It not only provides safe, efficient and transparent financial services, but also attracts a large number of users through an innovative referral reward mechanism. With the continuous development of blockchain technology, BitPower Loop is expected to occupy an important position in the future decentralized finance field and become a trustworthy financial service platform for users.
Through this introduction, readers can understand the basic concepts, operating mechanisms and unique advantages of BitPower Loop in the DeFi ecosystem. I hope this paper can help more people recognize and understand BitPower Loop and provide valuable references for their exploration in the field of blockchain and decentralized finance.@BitPower | wot_ee4275f6aa8eafb35b941 |
1,913,808 | Practical Problem Solving Applying GenAI and Classic Computer Science | Many of you have been asking me, "How can we use ChatGPT to bring real business value?" It's a great... | 0 | 2024-07-06T13:41:35 | https://dev.to/iwooky/practical-problem-solving-applying-genai-and-classic-computer-science-4a2e | ai, computerscience, learning, machinelearning | Many of you have been asking me, "How can we use ChatGPT to bring real business value?" It's a great question, and one that's on the minds of leaders across industries.
At the same time, I've noticed a trend among some tech influencers claiming that "Computer Science" or "Algorithms" are becoming obsolete in today's AI-driven world. You simple do not need it!
To the first point: If you're just using ChatGPT as a fancy chatbot, you're missing the bigger picture.
To the second: Those claiming CS is obsolete couldn't be more wrong.
Let me prove you otherwise.
👉 I've just published another episode that's going to challenge everything you think you know about AI in business and Computer Science: https://iwooky.substack.com/p/practical-problem-solving-gen-ai
[](https://iwooky.substack.com/p/practical-problem-solving-gen-ai) | iwooky |
1,911,743 | Know Your Tools: JetBrains IDE | Throughout my career as a Product Manager, I’ve developed key principles. One of them is "Know Your... | 0 | 2024-07-06T13:40:40 | https://dev.to/zerocodilla/know-your-tools-jetbrains-ide-5aim | python, programming, tutorial | Throughout my career as a Product Manager, I’ve developed key principles. One of them is "Know Your Tools." This concept is inspired by [The Pragmatic Programmer](https://www.amazon.co.uk/Pragmatic-Programmer-Andrew-Hunt/dp/020161622X). “Tools amplify your talent. The better your tools, and the better you know how to use them, the more productive you can be”. For me, this means taking the time to thoroughly learn the tools you use every day.
Two years ago, I started learning Python (read more about [Technical Skills for Product Manager](https://dev.to/zerocodilla/technical-skills-for-product-manager-1m1p)). I soon realized the depth of the rabbit hole, and solving problems in Python quickly became my hobby. For my coding journey, I have used [PyCharm](https://www.jetbrains.com/pycharm/) and invested my time in mastering it. In this article, I invite you to discover simple yet powerful JetBrains IDE features that are accessible at any proficiency level and inspire you to explore further.
## Learning Tools
First of all, I highly recommend the onboarding tour to everyone using JetBrains' IntelliJ-based IDEs (Help -> Learn IDE Features). It's an absolute masterpiece and a truly enjoyable process. In my opinion, it sets the standard for what a learning guide should be.
However, people may hesitate to follow learning guides, finding it challenging to remember new features, which may not match their proficiency level or might simply be boring. That's why I prefer focusing on 4-6 features, mastering them, and then progressing to the next set.
## Search Everywhere
Press ⇧ (macOS) / Shift (Windows/Linux) twice to open Search Everywhere. Suppose you are looking for the file password_generation.py. Type “pg” as the initial letters of these words and see the results.
You can type any words or letters you think might be part of your file, and it will work. This feature is colloquially referred to as [Fuzzy Search](https://en.wikipedia.org/wiki/Approximate_string_matching). The same technology is available in the Find Action ⇧⌘A (macOS) / Ctrl+Shift+A (Windows/Linux).
## Restore Removed Code
If you removed some code fragments and made several valuable changes, the usual “undo” is not a suitable solution. But restoring code from history works perfectly. Right-click anywhere in the editor to open the context menu, and go to Local History -> Show History. Find the code fragment you need to restore and click the button >>
## Code Selection
In addition to the usual ⇧+Arrows (macOS) / Shift+Arrows (Windows/Linux), you can try the ⌥+Arrows (macOS) / Ctrl+Shift+Arrow (Windows/Linux) combination. Press ⌥+Up Arrow (macOS) / Ctrl+Shift+Up Arrow (Windows/Linux) to select the word, once again to select the whole string, and once again to include quotes in the selection.
Press ⌥+Down Arrow (macOS) / Ctrl+Shift+Down Arrow (Windows/Linux) to shrink the selection. If you move the caret to the beginning of code blocks, this action will select this segment.
## Move Code
Press ⌘⇧+Up/Down Arrows (macOS) / Shift+Alt+Up/Down Arrows (Windows/Linux) to move code fragments. For moving methods, the caret should be at the header of the method. Another shortcut ⌘+Del (macOS) / Ctrl+Y (Windows/Linux) is useful to remove lines.
## Syntax Quick-Fixes
JetBrains IDEs are a perfectionist's dream… and nightmare. They won't let you sleep until every warning is fixed. Thankfully, you can simply press ⌥+Return (macOS) / Alt+Enter (Windows/Linux) to reformat your file and turn imperfect code into polished perfection.
Another useful feature is removing redundant parameters from all the code. It’s really beautiful how this feature optimizes your code if needed.
You also can remove redundant imports.
## Automatic F-string Completion
If you have a simple Python string but want to convert it to an f-string, just start typing {whatever… select the suggested parameter, and the string will be transformed into an f-string automatically.
## Rename Refactoring
If you need to rename some variables in the files, the Rename Refactoring feature is your time saver. Press ⇧F6 (macOS) / Shift+F6 (Windows/Linux) to rename.
All usages of this parameter will be renamed automatically.
In difficult cases with many usages, you will be advised to choose files for refactoring.
## Explore Further
I use PyCharm Community Edition for my coding practice. However, PyCharm Professional offers support for many Python frameworks, has integrated DB tools, an HTTP client, and more. So, if you are working on a complex web-based commercial project, PyCharm Professional could be a more suitable tool. The AI Assistant also looks very intriguing and is next on my list to explore.
## Conclusion
We can't harness the full power of our brains, but we can maximize our use of JetBrains tools. Don't settle for a basic level of proficiency. Mastering tools can significantly boost your productivity and inspire you to bring new features into the products you create. | zerocodilla |
1,913,807 | Hosting a static website in Azure Storage | Table of Contents Step 1: Edit Static Website on Command Prompt Step 2: Sign in to Azure portal Step... | 0 | 2024-07-06T13:40:22 | https://dev.to/mabis12/hosting-a-static-website-in-azure-storage-4b0g | storageaccount, cloudcomputing, staticwebsite, powershell | **Table of Contents**
Step 1: Edit Static Website on Command Prompt
Step 2: Sign in to Azure portal
Step 3: Create Storage account
Step 4: Click Create
Step 5: Enable static website hosting
Step 6: Upload files
Step 7: Find the website URL
A storage account is a container that groups a set of Azure Storage services together. Only data services from Azure Storage can be included in a storage account (Azure Blobs, Azure Files, Azure Queues, and Azure Tables).
The following illustration shows step by step guide on how to host a static website.
**Step 1: Edit Static Website on Command Prompt**
A sample Static website
How to edit:
-
Open Command Prompt on your Window Laptop
-
Select File to open the downloaded file
-
Select Index and start editing words written with white ink carefully.
**Step 2: Sign in to Azure portal**
Sign-in to _portal.azure.com_ to get started.
**Step 3: Create Storage account**
On the Azure Portal page, create a storage account by performing the following steps:
Click on Storage accounts in the Azure services section
On the Storage accounts page, click on + Create.
Provide the following details on the Create a storage account page:
-
Resource group: Select any available group of your choice. Else, create a new one by clicking Create new.
Storage account name: Enter a unique name for your storage account
-
Region: Choose any appropriate region. In our case, it’s “East US.”
-
Click on Review + create. This will initiate the validation process.
**Step 4: Create and Deploy**
If the function passes the validation, you’ll see the Create button at the bottom of the page. Click on it. It will then start and complete its deployment process.
Then click on the _Go to resource button_ to visit the recently-created function’s page
**Step 5: Enable static website hosting**
Static website hosting is a feature that you have to enable on the storage account via azure Portal, Azure CLI or Powershell.
In the Overview pane, select the Capabilities tab. Next, select Static website to display the configuration page for the static website.
Select Enabled to enable static website hosting for the storage account.
-
In the Index document name field, specify a default index page eg index.html. The default index page is displayed when a user navigates to the root of your static website.
-
In the Error document path field, specify a default error page eg 404.html. The default error page is displayed when a user attempts to navigate to a page that does not exist in your static website.
-
Click Save to finish the static site configuration.
3.
A confirmation message is displayed. Your static website endpoints and other configuration information are shown within the Overview pane.
Diagram
**Step 6: Upload files**
-
In the Overview, navigate to the Data storage then click on Containers on the left navigation pane.
-
In the Containers pane, select the $web container to open the container's Overview pane.
In the Overview pane, select the Upload icon to open the Upload blob pane. Next, select the Files field within the Upload blob pane to open the file browser. Navigate to the file you want to upload, select it, then select Open to populate the Files field.
**Step 7: Find the website URL**
You can view the pages of your site from a browser by using the public URL of the website.
In the pane that appears beside the account overview page of your storage account, select Static Website. The URL of your site appears in the Primary endpoint field.
| mabis12 |
1,913,806 | HOW TO GET BACK STOLEN BITCOIN,Contact-THE HACK ANGELS. | I’m thrilled to tell you about my amazing experience working with THE HACK ANGELS, a recovery... | 0 | 2024-07-06T13:36:58 | https://dev.to/benjamin_liam_b5abfe2c30a/how-to-get-back-stolen-bitcoincontact-the-hack-angels-1i18 |
I’m thrilled to tell you about my amazing experience working with THE HACK ANGELS, a recovery company. I put $155,000 into a fictitious venture. following being a victim. I didn’t know whether I would ever see my hard-earned money again, and I was devastated. I’m glad that THE HACK ANGELS, who assisted me in getting my Bitcoin back, were discovered on Google. How THE HACK ANGELS helped me get my lost cryptocurrency back is something I will never forget. I never would have thought it was possible to recover cryptocurrency. For anyone who is in a similar situation, I suggest THE HACK ANGELS. their everlasting dedication to the welfare of their clients and their unmatched proficiency in cryptocurrency recovery. You can get in contact with them using,
Web: https://thehackangels.com
Mail Box; support@thehackangels. com
Whats Ap; +1 520) - 200, 23 20 | benjamin_liam_b5abfe2c30a | |
1,913,805 | Lazy Loading :) | Sometimes a user might not click and view a part of the code. In that case, it doesn't make sense to... | 0 | 2024-07-06T13:36:54 | https://dev.to/justanordinaryperson/lazy-loading--3f11 | webdev, react, javascript, programming | Sometimes a user might not click and view a part of the code. In that case, it doesn't make sense to load the component before we render the main screen. This is where Lazy Loading comes in.
Code example :
```
import React, { lazy, Suspense, useState } from 'react';
// Import component A directly (eager loading)
import A from './A';
// Lazy load component B
const B = React.lazy(() => import('./B'));
const App = () => {
const [showComponentB, setShowComponentB] = useState(false);
const handleClick = () => {
setShowComponentB(true);
};
return (
<div>
<A />
<button onClick={handleClick}>Click to view Component B</button>
{showComponentB && (
<Suspense fallback={<div>Loading...</div>}>
<B />
</Suspense>
)}
</div>
);
};
export default App;
```
Explanation:
Here, the code imports A directly, assuming it's needed on the landing page (eager loading). B is lazy loaded using React.lazy and Suspense.
The render doesn't have to wait for B, before rendering A :) | justanordinaryperson |
1,913,803 | Effortlessly Feed Your Code to AI Chatbots with CrazyNote! | Do you know how tedious it is to copy code from one file to another to give AI chatbot (or ChatGPT)... | 0 | 2024-07-06T13:31:34 | https://dev.to/globalkonvict/effortlessly-feed-your-code-to-ai-chatbots-with-crazynote-1njd | javascript, npm, chatgpt, ai | Do you know how tedious it is to copy code from one file to another to give AI chatbot (or ChatGPT) some context? It's like a never-ending game of digital hopscotch! That's why I created CrazyNote, a CLI app that automates this process. It’s customizable, so it works for almost any project.
## What is CrazyNote?
CrazyNote is my brainchild, designed to take the crazy out-of-context sharing processes! Imagine a tool that scans your project directory, reads file contents, and then creates comprehensive Markdown documentation. It's perfect for feeding data to AI chatbots. It's a kind of code flattener if you will but it doesn't merge everything as a single file rather creates a markdown file.
Why the name CrazyNote? Well, I was going to call it mad-structure (Which was the first iteration but then I decided to do a new iteration from scratch so there was already mad-structure folder in my drive and I felt too lazy to remove it) So it's nothing fancy.
## Features
- **Directory Traversal:** CrazyNote dives deep into your project directory, including all relevant files.
- **Ignore Patterns:** You can exclude specific files or directories based on patterns.
- **Custom Templates:** Use predefined or custom Handlebars templates to format your documentation.
- **Language Mapping:** Detects the programming language of files based on their extensions.
- **File Metadata:** Includes file size and last modified date in the documentation.
- **Initialization:** Quickly set up default configuration files and templates.
## How to Use CrazyNote
- You can install CrazyNote directly from npm. It's super easy!
```npm install -g crazynote```
- Setting Up CrazyNote in Your Project
- First, initialize the configuration file:
```crazynote --init```
- Or choose a template:
```crazynote --init --template detailed_explorer```
- Once initialized, run CrazyNote to generate your Markdown File with your project content:
`crazynote`
## Example
Let's use CrazyNote on CrazyNote itself. Here's the final output it generated: [CrazyNote Output](https://github.com/globalkonvict/crazynote/blob/main/example/output.md).
## Thanks and Suggestions
Thank you for checking out CrazyNote! Your feedback and suggestions are always welcome. I do hope it's useful to you.
| globalkonvict |
1,913,802 | Vuetify Tutorial: Design a Website About section using Vuetify || Vuetify Bangla Tutorial | YouTube Video: https://lnkd.in/gh_dWAjt Welcome to our comprehensive Vuetify tutorial in Bangla! In... | 0 | 2024-07-06T13:31:30 | https://dev.to/minit61/vuetify-tutorial-design-a-website-about-section-using-vuetify-vuetify-bangla-tutorial-5acp | javascript, vue, webdev |
YouTube Video: https://lnkd.in/gh_dWAjt
Welcome to our comprehensive Vuetify tutorial in Bangla! In this video, we'll guide you through designing a stunning website banner using Vuetify, a popular Vue.js framework. Whether you're a beginner or an experienced developer, this tutorial will help you create a professional-looking banner section for your website.
In This Video, You Will Learn:
How to set up Vuetify in your Vue.js project
The basics of Vuetify components and grid system
Step-by-step instructions to design a website banner
Tips and tricks for responsive and aesthetically pleasing desig
Why Watch This Tutorial?
Beginner-Friendly: Easy-to-follow instructions perfect for those new to Vuetify.
Bangla Language: Enjoy learning in your native language for better understanding.
Practical Examples: Real-world application to help you implement what you learn.
Don't forget to like, share, and subscribe for more tutorials in Bangla. Leave your comments and questions below, and we'll be happy to help!
📧 Contact Us:
For any queries or collaboration,
GitHub: https://lnkd.in/gXy8dVb7
Website: https://lnkd.in/g266fwzp
Facebook: https://lnkd.in/gpKJhs7N
YouTube: https://lnkd.in/gjVWT-_D
hashtag#BanglaTutorial hashtag#Vuetify3 hashtag#Vuejs3 hashtag#ResponsiveDesign hashtag#WebDevelopment hashtag#NavigationDrawers hashtag#BanglaCoding hashtag#minhazulmin | minit61 |
1,913,801 | Blockchain, Crypto and Web3: Understanding the correlations | Have you come across people talking about Blockchain, Crypto and Web3 but haven't had anyone explain... | 0 | 2024-07-06T13:21:24 | https://dev.to/neelxie/blockchain-crypto-and-web3-understanding-the-correlations-1f0f | Have you come across people talking about Blockchain, Crypto and Web3 but haven't had anyone explain them to you? I used to be like you a while back. You've probably come across these words on the internet and while they're all connected, they actually refer to different things. Let's break it down together.
First up, let's look at Blockchain. Think of blockchain as a network of computers that have the same copy of information. Every time anyone makes a transaction, or adds it gets recorded on this "chain" of computers. If you know what a ledger is, then this is some foundational massive ledger that anyone can see what is on it but as long as a change has been recorded on it, it can not be changed.
This technology is very secure, transparent and being tamper-proof so many industries are picking it up and are using it or rather innovating ways of integrating it's use. These industries span anything and everything you can think of, supply chain management, finance, voting systems, land ownership and so many more.
Now, onto Crypto which is short for Cryptocurrency. When people mention Crypto they refer to the currencies that operate on the blockchain technology. You have probably heard of Bitcoin and Ethereum and so many other coins which are all Crypto currencies. What makes them special?
Given that these currencies solely exist on the blockchain, they are decentralized meaning they are not controlled by any government or bank. They are managed by the network of computers. Why would the lack of control be a good thing?
The decentralization makes the transactions faster,cheaper and more secure. No bank or government bureaucracy on limits and charges. his has opened up new ways to think about money and finance in general and people are use the Crypto currencies for all sorts of things.
They are using them to make payments, buy stuff online, investing or even as a way to support projects they believe in. So given that cryptocurrencies rely on blockchain technology to keep everything, you get to see how the two are closely linked.
Finally we have Web3. If blockchain is the foundation and crypto is the currency , web3 is like the next evolution of the internet. In Web3 instead of a few big companies controlling everything, power is distributed among the users. (remember Decentralization?)
It is about a more open and fair user-controlled online environment, with users having control over their data and online interactions. This decentalization is on everything from decentralized apps commonly called dApps that run on the blockchain to new forms of online governance and digital identities.
By now, you can see how these concepts are related. Blockchain is the technology (providing the secure infrastructure) that makes everything possible. Cryptocurrencies operate within this infrastructure, offering new ways to transact and invest. Web3 leverages both to create a decentralized user-controlled internet experience.
Understanding these correlations helps you see the bigger picture and appreciate how these technologies might share our future.
Still curious?
There is so much more to explore in this space. Stick around--I've got plenty more insights and updates coming your way. Feel free to leave a comment or share this article with anyone else who might be wondering what all the fuss is about!
| neelxie | |
1,913,799 | Erfolgreiche SEO Strategien: Tipps und Tricks von einer erfahrenen SEO Agentur | Suchmaschinenoptimierung (SEO) ist ein entscheidender Faktor für den Online-Erfolg von Unternehmen.... | 0 | 2024-07-06T13:17:55 | https://dev.to/mahnoor_esha_/erfolgreiche-seo-strategien-tipps-und-tricks-von-einer-erfahrenen-seo-agentur-2d17 | seo | Suchmaschinenoptimierung (SEO) ist ein entscheidender Faktor für den Online-Erfolg von Unternehmen. Die richtigen SEO-Strategien können die Sichtbarkeit Ihrer Website erhöhen, mehr Traffic generieren und letztlich Ihre Umsätze steigern. In diesem Artikel teilen wir Tipps und Tricks von einer erfahrenen SEO Agentur, um Ihnen zu helfen, erfolgreiche SEO-Strategien zu entwickeln und umzusetzen. Unsere [SEO Agentur](https://likemeasap.com/) hilft Ihnen, Ihre Webseite für Suchmaschinen zu optimieren.
1. Keyword-Recherche und -Optimierung
Eine gründliche Keyword-Recherche ist der erste Schritt zu einer erfolgreichen SEO-Strategie. Identifizieren Sie relevante Keywords, die von Ihrer Zielgruppe häufig gesucht werden, und integrieren Sie diese Keywords sinnvoll in Ihre Inhalte. Tools wie Google Keyword Planner oder SEMrush können Ihnen dabei helfen, die richtigen Keywords zu finden.
2. Qualitativ hochwertiger Content
Content ist das Herzstück jeder SEO-Strategie. Erstellen Sie informative, relevante und qualitativ hochwertige Inhalte, die einen Mehrwert für Ihre Nutzer bieten. Suchmaschinen wie Google bevorzugen Websites mit gutem Content und belohnen diese mit besseren Rankings. Achten Sie darauf, regelmäßig neuen Content zu veröffentlichen und bestehende Inhalte zu aktualisieren.
3. On-Page-Optimierung
Die On-Page-Optimierung umfasst alle Maßnahmen, die direkt auf Ihrer Website durchgeführt werden, um deren Sichtbarkeit zu verbessern. Dazu gehören die Optimierung von Meta-Tags (Titel, Beschreibungen), die Verwendung von Header-Tags (H1, H2, H3) zur Strukturierung Ihrer Inhalte, die Optimierung der URL-Struktur und die Verbesserung der internen Verlinkung. Auch die Optimierung von Bildern durch Alt-Tags und die Verwendung von Keywords in den Bildbeschreibungen ist wichtig.
4. Mobile-Freundlichkeit
In der heutigen Zeit greifen immer mehr Menschen über mobile Geräte auf das Internet zu. Daher ist es entscheidend, dass Ihre Website mobilfreundlich ist. Google berücksichtigt die mobile Nutzerfreundlichkeit bei der Bewertung von Websites und bevorzugt mobiloptimierte Seiten. Stellen Sie sicher, dass Ihre Website auf verschiedenen Geräten gut aussieht und funktioniert.
5. Schnelle Ladezeiten
Die Ladezeit Ihrer Website ist ein wichtiger Ranking-Faktor. Eine langsame Website kann zu hohen Absprungraten führen und Ihre Platzierungen in den Suchergebnissen negativ beeinflussen. Optimieren Sie die Ladezeiten Ihrer Website, indem Sie Bilder komprimieren, unnötige Plugins entfernen und Caching-Techniken verwenden.
6. Backlink-Aufbau
Backlinks sind Links von anderen Websites, die auf Ihre Website verweisen. Sie sind ein wichtiger Faktor für das Ranking in Suchmaschinen. Bemühen Sie sich um qualitativ hochwertige Backlinks von vertrauenswürdigen Websites in Ihrer Branche. Sie können Backlinks durch Gastbeiträge, Partnerschaften oder den Austausch von Links mit anderen relevanten Websites erhalten.
7. Technische SEO
Technische SEO umfasst alle Maßnahmen, die die technische Infrastruktur Ihrer Website betreffen. Dazu gehören die Optimierung der Website-Geschwindigkeit, die Sicherstellung einer sauberen URL-Struktur, die Implementierung von HTTPS und die Erstellung einer XML-Sitemap. Technische SEO sorgt dafür, dass Suchmaschinen Ihre Website effizient crawlen und indexieren können.
8. Lokale SEO
Für Unternehmen, die lokal tätig sind, ist lokale SEO von großer Bedeutung. Optimieren Sie Ihre Website für lokale Suchanfragen, indem Sie sich bei Google My Business registrieren, lokale Keywords verwenden und Bewertungen von Kunden sammeln. Lokale SEO hilft Ihnen, in den Suchergebnissen für lokale Suchanfragen besser sichtbar zu sein.
Zusammenfassung
Eine erfolgreiche SEO-Strategie erfordert eine umfassende Herangehensweise und kontinuierliche Anpassungen. Die Tipps und Tricks einer erfahrenen SEO Agentur können Ihnen dabei helfen, Ihre Website für Suchmaschinen zu optimieren und bessere Ergebnisse zu erzielen. Von der Keyword-Recherche über qualitativ hochwertigen Content bis hin zur technischen SEO – jede Maßnahme trägt dazu bei, Ihre Online-Sichtbarkeit zu erhöhen und Ihr Geschäft zu fördern. Indem Sie diese Strategien anwenden und sich auf die Bedürfnisse Ihrer Zielgruppe konzentrieren, können Sie langfristig erfolgreich sein und in den Suchmaschinenrankings aufsteigen.
| mahnoor_esha_ |
1,913,792 | HNG_11 Stage_1 | SAW Version: 1.1.19.0 Bug Report:... | 0 | 2024-07-06T13:03:41 | https://dev.to/mariam/hng11-stage1-3kg3 | hng11, saw | SAW Version: 1.1.19.0
Bug Report: https://docs.google.com/spreadsheets/d/1AlPX8KUSfTc7cwWc7RzkYy_KXRRJY29_/edit?usp=sharing&ouid=100913572815394374666&rtpof=true&sd=true
[Scrape Any Website](ms-windows-store://pdp?hl=en-us&gl=ng&referrer=storeforweb&productid=9mzxn37vw0s2&ocid=storeweb-pdp-open-cta)
[Scrape Any Website](https://scrapeanyweb.site/)
**ScrapeAnyWebsite: Conquering Common Bug Challenges**
ScrapeAnyWebsite is a powerful tool for extracting data from websites. But even the mightiest tools can encounter glitches. Today, I'll address three common issues that ScrapeAnyWebsite users might face: missing delete buttons, invalid URL scrapes, and app crashes triggered by blank URLs.
**- The Missing Delete Button Blues**
Imagine you've meticulously scraped data, but then realize you need to remove some unwanted entries. But where's the delete button? This missing functionality can be frustrating. Here's how to tackle it:
a. User-Friendly Interface: ScrapeAnyWebsite should prioritize a user-friendly interface. Implement clear and intuitive delete buttons next to each data entry. Consider using a trash can icon or a universally understood "Delete" label.
**- Taming Invalid URL Scrapes**
Invalid URLs can throw a wrench into your scraping plans, potentially leading to errors or unexpected behavior. Let's outsmart these URL offenders:
a. Graceful Error Handling: When ScrapeAnyWebsite encounters an invalid URL, it shouldn't scrape. Instead, it should implement informative error messages that politely explain the issue and guide users towards entering a valid URL.
b. URL Validation: Fortify ScrapeAnyWebsite's defenses by incorporating URL validation. This ensures that only valid URL formats and characters are accepted, preventing invalid entries from being processed. Regular expressions can be helpful for robust validation.
**- The Blank URL Trap – Preventing App Crashes**
A seemingly harmless blank URL can sometimes cause ScrapeAnyWebsite to crash. Here's how to prevent this:
a. Input Validation to the Rescue: Disallowing blank URLs from being submitted eliminates a potential crash trigger.
b. Clear User Guidance: Provide clear prompts or placeholder text within the URL input field. This nudges users towards entering a valid URL and avoids blank URL submissions.
| mariam |
1,913,798 | Garment Bag Manufacturing Factory | We are a factory with 20 years of expertise in custom garment bag manufacturing. Our offerings... | 0 | 2024-07-06T13:17:13 | https://dev.to/uanbag/garment-bag-manufacturing-factory-4p5b | We are a factory with 20 years of expertise in custom garment bag
manufacturing. Our offerings include a diverse range of materials and
designs, tailored to deliver premium, bespoke packaging solutions for clothing brands.
[](https://uanbag.com/) | uanbag | |
1,913,041 | Build your own DI Container in JavaScript. | What we will build In this chapter we will implement our own DI Container in... | 27,962 | 2024-07-06T13:14:13 | https://dev.to/emanuelgustafzon/build-your-own-di-container-in-javascript-2da3 | javascript, dependencyinversion, designpatterns | ## What we will build
In this chapter we will implement our own DI Container in JavaScript.
We will create a checkout simulation and we are going to use our DI Container to handle the dependency injection.
## The services
Here is the service classes and the flow of our application. We have a credit card, a shipping bag and then a class that handles the transaction and one that sends the order.
```
// Independent service
class CreditCard {
owner;
address;
number;
cvc;
set(owner, address, number, cvc) {
this.owner = owner;
this.address = address;
this.number = number;
this.cvc = cvc;
}
}
// Independent service
class ShoppingBag {
items = [];
total = 0;
addItem(item) {
this.items.push(item);
this.total += item.price;
}
}
// Dependent on credit card and shopping bag
class Transaction {
constructor(creditCard, shoppingBag) {
this.creditCard = creditCard;
this.shoppingBag = shoppingBag;
}
transfer() {
console.log(`Transfering ${this.shoppingBag.total} to ${this.creditCard.owner}`);
}
}
// dependent on credit card and shopping bag
class SendOrder {
constructor(creditCard, shoppingBag) {
this.creditCard = creditCard;
this.shoppingBag = shoppingBag;
}
send() {
console.log(`Sending ${this.shoppingBag.total} to ${this.creditCard.address}`);
}
}
```
## DI Container skeleton
```
class DIContainer {
services = new Map();
register() {}
resolve() {}
}
```
The DI container will have two methods, one to register the services and their dependencies and one to resolve the services and their dependencies.
The services are to be saved in a map with key-value pairs of the name of the service and the service/instance.
## Simple registration and resolving
```
class DIContainer {
services = new Map();
register(serviceName, serviceDefinition) {
this.services.set(serviceName, {
serviceDefinition
});
}
resolve(serviceName) {
const service = this.services.get(serviceName);
if (!service) {
throw new Error(`Service ${serviceName} not found`);
}
return new service.serviceDefinition();
}
}
```
Here we simply register a service by adding a key-value pair in the map with the service name and the service definition. The service definition is the class.
This is now like an instance generator.
```
const container = new DIContainer();
container.register('creditCard', CreditCard);
const creditCard1 = container.resolve('creditCard');
const creditCard2 = container.resolve('creditCard');
creditCard1.set('John Doe', 'Street 12', '0000-0000-0000', '123');
creditCard2.set('Jane Smith', 'Street 2', '0000-0000-0000', '123');
console.log(creditCard1, creditCard2)
```
## Resolve dependencies
An instance generator is not exciting so let’s add dependencies to the services.
These are the steps:
1. Add an array of all the names of the dependencies.
2. Resolve all the dependencies by looping over the array and calling the resolve function on all the services.
3. Add the resolved dependencies into the constructor of the service.
```
class DIContainer {
services = new Map();
register(serviceName, serviceDefinition, dependencies = []) {
this.services.set(serviceName, {
serviceDefinition,
dependencies
});
}
resolve(serviceName) {
const service = this.services.get(serviceName);
if (!service) {
throw new Error(`Service ${serviceName} not found`);
}
const resolvedDependencies = service.dependencies.map(dependency => this.resolve(dependency));
return new service.serviceDefinition(...resolvedDependencies);
}
}
```
Now it starts to be interesting. Go ahead and register the services with the dependencies array.
```
const container = new DIContainer();
container.register('creditCard', CreditCard);
container.register('shoppingBag', ShoppingBag);
container.register('transaction', Transaction, ['creditCard', 'shoppingBag'])
const creditCard= container.resolve('creditCard');
const shoppingBag = container.resolve('shoppingBag');
creditCard.set('John Doe', 'Street 12', '0000-0000-0000', '123');
shoppingBag.addItem({name: 'Apple', price: 1.99});
container.resolve('transaction').transfer();
```
It works BUT in the console, we get `Transfering 0 to undefined`.
That's because of `scope`. the data from the credit card and shopping bag does not persist because our container creates a new instance every time it is called. It has a transient scope.
# Add Scope
Let's add scope to our container. by adding a scope parameter in the register function.
```
register(serviceName, serviceDefinition, scope, dependencies = []) {
this.services.set(serviceName, {
serviceDefinition,
scope,
dependencies
});
}
```
### Add Transient
Our container already provides transient services but let's add an if statement for when it is transient and add the logic there.
```
resolve(serviceName) {
const service = this.services.get(serviceName);
if (!service) {
throw new Error(`Service ${serviceName} not found`);
}
if (service.scope === 'transient') {
const resolvedDependencies = service.dependencies.map(dependency => this.resolve(dependency));
return new service.serviceDefinition(...resolvedDependencies);
}
}
```
### Add Singleton
Let's also add support for singleton services. By doing so check if an instance already exists and if it does return the existing instance and don't create a new one.
In the resister function insiste an instance key in services and set it to null.
```
register(serviceName, serviceDefinition, scope, dependencies = []) {
this.services.set(serviceName, {
serviceDefinition,
scope,
dependencies,
instance: null // add instance property to store the instance of the service
});
}
```
In the resolve method add an if statement for singleton and always return the same instance.
```
if (service.scope === 'singleton') {
if (!service.instance) {
const resolvedDependencies = service.dependencies.map(dependency => this.resolve(dependency));
service.instance = new service.serviceDefinition(...resolvedDependencies);
}
return service.instance;
}
```
Now let’s register the credit card and shopping bag as singleton and the transaction as transient.
```
const container = new DIContainer();
container.register('creditCard', CreditCard, 'singleton');
container.register('shoppingBag', ShoppingBag, 'singleton');
container.register('transaction', Transaction, 'transient',['creditCard', 'shoppingBag'])
const creditCard= container.resolve('creditCard');
const shoppingBag = container.resolve('shoppingBag');
creditCard.set('John Doe', 'Street 12', '0000-0000-0000', '123');
shoppingBag.addItem({name: 'Apple', price: 1.99});
container.resolve('transaction').transfer();
```
And we get `Transfering 1.99 to John Doe` in the console.
BUT we are not there yet because the shopping bag and credit card will always have the same instance you can set different values but the instance is the same. So new users cannot add new cards or shopping bags.
watch the code below. We cannot resolve the credit card and shopping bag in different contexts. Let's add 2 cards and 2 bags and you see what I mean.
```
const creditCard= container.resolve('creditCard');
const shoppingBag = container.resolve('shoppingBag');
const creditCard2 = container.resolve('creditCard');
const shoppingBag2 = container.resolve('shoppingBag');
creditCard.set('John Doe', 'Street 12', '0000-0000-0000', '123');
shoppingBag.addItem({name: 'Apple', price: 1.99});
creditCard2.set('Dan Scott', 'Street 90', '1111-1111-1111', '321');
shoppingBag2.addItem({name: 'Orange', price: 2.99});
container.resolve('transaction').transfer();
```
### Add Request/Scoped
We need to add an HTTP context to our container. Let's add a context parameter to the resolve method and a `Map` hashtable to save the scoped services.
```
class DIContainer {
services = new Map();
scopedServices = new Map(); // save the scoped services
register(serviceName, serviceDefinition, scope, dependencies = []) {}
// Add context
resolve(serviceName, context = null) {}
}
```
Cool, add an if statement for scoped lifetimes in the resolve method.
Check if there is a context otherwise throw an error.
check if the current context already exists in the scopedServices Map otherwise create it.
```
if(service.scope === 'scoped') {
if (!context) {
throw new Error('Scoped services requires a context.');
}
if (!this.scopedServices.has(context)) {
// key value pair of context and a new map with the services
this.scopedServices.set(context, new Map());
}
}
```
Now we have saved the context, let's find the saved context, add the service name and its instance, as well as the dependencies names and instances, and then resolve them.
```
if(service.scope === 'scoped') {
if (!context) {
throw new Error('Scoped services requires a context.');
}
if (!this.scopedServices.has(context)) {
this.scopedServices.set(context, new Map());
}
const contextServices = this.scopedServices.get(context);
if (!contextServices.has(serviceName)) {
const resolvedDependencies = service.dependencies.map(dependency=> this.resolve(dependency, context)); // Don't forget to include context
const instance = new service.serviceDefinition(...resolvedDependencies);
contextServices.set(serviceName, instance);
}
return contextServices.get(serviceName);
}
```
The structure of the scoped services looks like this:
```
{
context1: {
serviceName: instance,
serviceName: instance
},
context2: {
serviceName: instance,
serviceName: instance
}
}
```
We also need to pass the context to all dependencies being resolved. so let's do that also for transient and singleton services.
```
if (service.scope === 'transient') {
// pass the context into dependencies
const resolvedDependencies = service.dependencies.map(dependency => this.resolve(dependency, context));
return new service.serviceDefinition(...resolvedDependencies);
}
if (service.scope === 'singleton') {
if (!service.instance) {
// pass the context into dependencies
const resolvedDependencies = service.dependencies.map(dependency => this.resolve(dependency, context));
service.instance = new service.serviceDefinition(...resolvedDependencies);
}
return service.instance;
}
```
#### Remove context
Now let's add a function that cleans up the scoped services.
We add one extra method to our DI Container called clearContext.
```
clearContext(context) {
this.scopedServices.delete(context);
console.log("Deleted context");
}
```
#### Let's try it out.
We simulate a httpContext by creating an httpContextobject and sending it as an argument to the resolve function.
```
const container = new DIContainer();
container.register('creditCard', CreditCard, 'scoped');
container.register('shoppingBag', ShoppingBag, 'scoped');
container.register('transaction', Transaction, 'transient',['creditCard', 'shoppingBag'])
container.register('sendOrder', SendOrder, 'transient',['creditCard', 'shoppingBag'])
const httpContext = {
headers: {
"content-type": "application/json"
},
body: {
url: "https://www.myStore.com/checkout"
}
}
const httpContext2 = {
headers: {
"content-type": "application/json"
},
body: {
url: "https://www.myStore.com/checkout"
}
}
const creditCard = container.resolve('creditCard', httpContext);
const shoppingBag = container.resolve('shoppingBag', httpContext);
const creditCard2 = container.resolve('creditCard', httpContext2);
const shoppingBag2 = container.resolve('shoppingBag', httpContext2);
creditCard.set('John Doe', 'Street 12', '0000-0000-0000', '123');
shoppingBag.addItem({name: 'Apple', price: 1.99});
creditCard2.set('Dan Scott', 'Street 90', '1111-1111-1111', '321');
shoppingBag2.addItem({name: 'Orange', price: 2.99});
container.resolve('transaction', httpContext).transfer();
container.resolve('transaction', httpContext2).transfer();
container.clearContext(httpContext);
container.clearContext(httpContext2);
```
In the console you should see:
`Transfering 1.99 to John Doe
Transfering 2.99 to Dan Scott
Deleted context
Deleted context`
Thanks for reading and happy coding!
#### Full example
```
class DIContainer {
services = new Map();
scopedServices = new Map();
register(serviceName, serviceDefinition, scope, dependencies = []) {
this.services.set(serviceName, {
serviceDefinition,
scope,
dependencies,
instance: null
});
}
resolve(serviceName, context = null) {
const service = this.services.get(serviceName);
if (!service) {
throw new Error(`Service ${serviceName} not found`);
}
if (service.scope === 'transient') {
const resolvedDependencies = service.dependencies.map(dependency => this.resolve(dependency, context));
return new service.serviceDefinition(...resolvedDependencies);
}
if (service.scope === 'singleton') {
if (!service.instance) {
const resolvedDependencies = service.dependencies.map(dependency => this.resolve(dependency, context));
service.instance = new service.serviceDefinition(...resolvedDependencies);
}
return service.instance;
}
if(service.scope === 'scoped') {
if (!context) {
throw new Error('Scoped services requires a context.');
}
if (!this.scopedServices.has(context)) {
this.scopedServices.set(context, new Map());
}
const contextServices = this.scopedServices.get(context);
if (!contextServices.has(serviceName)) {
const resolvedDependencies = service.dependencies.map(dependency=> this.resolve(dependency, context));
const instance = new service.serviceDefinition(...resolvedDependencies);
contextServices.set(serviceName, instance);
}
return contextServices.get(serviceName);
}
}
clearContext(context) {
this.scopedServices.delete(context);
console.log('Deleted context');
}
}
// Independent service
class CreditCard {
owner;
address;
number;
cvc;
set(owner, address, number, cvc) {
this.owner = owner;
this.address = address;
this.number = number;
this.cvc = cvc;
}
}
// Independent service
class ShoppingBag {
items = [];
total = 0;
addItem(item) {
this.items.push(item);
this.total += item.price;
}
}
// Dependent on credit card and shopping bag
class Transaction {
constructor(creditCard, shoppingBag) {
this.creditCard = creditCard;
this.shoppingBag = shoppingBag;
}
transfer() {
console.log(`Transfering ${this.shoppingBag.total} to ${this.creditCard.owner}`);
}
}
// dependent on credit card and shopping bag
class SendOrder {
constructor(creditCard, shoppingBag) {
this.creditCard = creditCard;
this.shoppingBag = shoppingBag;
}
send() {
console.log(`Sending ${this.shoppingBag.total} to ${this.creditCard.address}`);
}
}
const container = new DIContainer();
container.register('creditCard', CreditCard, 'scoped');
container.register('shoppingBag', ShoppingBag, 'scoped');
container.register('transaction', Transaction, 'transient',['creditCard', 'shoppingBag'])
container.register('sendOrder', SendOrder, 'transient',['creditCard', 'shoppingBag'])
const httpContext = {
headers: {
"content-type": "application/json"
},
body: {
url: "https://www.myStore.com/checkout"
}
}
const httpContext2 = {
headers: {
"content-type": "application/json"
},
body: {
url: "https://www.myStore.com/checkout"
}
}
const creditCard = container.resolve('creditCard', httpContext);
const shoppingBag = container.resolve('shoppingBag', httpContext);
const creditCard2 = container.resolve('creditCard', httpContext2);
const shoppingBag2 = container.resolve('shoppingBag', httpContext2);
creditCard.set('John Doe', 'Street 12', '0000-0000-0000', '123');
shoppingBag.addItem({name: 'Apple', price: 1.99});
creditCard2.set('Dan Scott', 'Street 90', '1111-1111-1111', '321');
shoppingBag2.addItem({name: 'Orange', price: 2.99});
container.resolve('transaction', httpContext).transfer();
container.resolve('transaction', httpContext2).transfer();
container.clearContext(httpContext);
container.clearContext(httpContext2);
```
| emanuelgustafzon |
1,913,796 | How to write better CSS | In order to write better CSS for styling websites you must first learn three things, which are... | 0 | 2024-07-06T13:12:28 | https://dev.to/syedumaircodes/how-to-write-better-css-2plo | webdev, beginners, css, html | In order to write better CSS for styling websites you must first learn three things, which are responsive design, your code is maintainable and scalable, and is performative.
Responsive design is all about making sure your website looks and behaves perfectly on every possible screen size. Since the number of screen sizes is ever increasing, responsive design is a fundamental concept that every frontend developer must learn and master.
The code you write must be written in such a way that other developers can also easily understand it and contribute to it. This makes the code more maintainable and can easily scale if the scope of the project increases.
> Use simple and meaningful class names and the markup should use semantic elements mostly.
The performance of CSS classes and styles can only be increased when you use the proper attributes and also use the latest available features to make your code more performant.
## Systemize your code
Always use a system when designing from scratch, break each section into independent components that can also be used later on. Design with components in mind not layouts.
> The BEM architecture is a great starting point for a systematic approach to CSS.
The 7-to-1 approach is also a good choice if your working primarily with large codebases and is not worth it for smaller projects. This approach outlines that you create seven different files for each type styling and then combine them into one single file.
---
Hope these tips help, if you have questions leave them in the comments and if you want to connect with me you can follow me on Twitter(X) or Linkedin: @SyedUmairCodes | syedumaircodes |
1,913,795 | Garment Bag Manufacturing Factory | We are a factory with 20 years of expertise in custom garment bag manufacturing. Our offerings... | 0 | 2024-07-06T13:06:23 | https://dev.to/uanbag/garment-bag-manufacturing-factory-8a7 | We are a factory with 20 years of expertise in custom garment bag
manufacturing. Our offerings include a diverse range of materials and
designs, tailored to deliver premium, bespoke packaging solutions for clothing brands.
[](https://uanbag.com/) | uanbag | |
1,913,794 | BitPower Loop: A blockchain-based decentralized lending smart contract protocol | Introduction Driven by blockchain technology, decentralized finance (DeFi) has become an important... | 0 | 2024-07-06T13:05:04 | https://dev.to/woy_ca2a85cabb11e9fa2bd0d/bitpower-loop-a-blockchain-based-decentralized-lending-smart-contract-protocol-2d3a |
Introduction
Driven by blockchain technology, decentralized finance (DeFi) has become an important trend in the field of financial technology. BitPower Loop, as a blockchain-based decentralized lending smart contract protocol, uses smart contract technology to provide a secure, efficient and transparent financial service solution. This article will introduce the core features, operating mechanism and advantages of BitPower Loop in the DeFi ecosystem.
Core features
BitPower Loop is a smart contract protocol deployed on the Ethereum Virtual Machine (EVM). Its main features include:
Decentralization: BitPower Loop is completely decentralized, with no centralized manager or owner, and all operations are automatically executed by smart contracts.
Transparency: All transaction records and smart contract codes are public and transparent, and users can view them at any time.
Security: The immutable nature of blockchain and the automatic execution ability of smart contracts ensure the security of funds and the reliability of transactions.
Efficiency: Automatic processing of lending and liquidity provision through smart contracts greatly improves the efficiency of financial services.
Low cost: Based on the fast transaction speed and low gas fee of Tron blockchain, BitPower Loop has extremely low operating costs.
Operation mechanism
The operation mechanism of BitPower Loop mainly includes the following aspects:
1. Liquidity provision
Users can provide liquidity to the platform through smart contracts, and BitPower Loop will give corresponding returns according to the length of time the liquidity is provided. For example, providing 1 day of liquidity can get a return of 0.4%, and providing 28 days of liquidity can get a return of 24%. This mechanism encourages users to hold assets for a long time and increase the liquidity of the platform.
2. Lending service
BitPower Loop allows users to borrow and lend by mortgaging assets. Borrowers need to provide corresponding collateral, and the platform automatically manages the value of the collateral and the loan amount through smart contracts to ensure the safety and stability of the loan.
3. Automated income distribution
All income and returns are automatically distributed through smart contracts, and users can get the income they deserve without manual operation. This automated mechanism not only improves efficiency, but also reduces the risk of human operation.
4. Referral Rewards
BitPower Loop has a unique referral reward mechanism. Users can invite new users to join through personal referral links and receive referral rewards at different levels. The proportion of referral rewards is calculated based on the referral level and liquidity amount, and up to 21 levels of rewards can be obtained. This mechanism effectively encourages users to promote the platform and expand the user base.
Advantages
BitPower Loop's advantages in the DeFi ecosystem are mainly reflected in the following aspects:
Complete decentralization: There is no centralized manager or owner, and all decisions and operations are automatically executed by smart contracts, ensuring the fairness and transparency of the platform.
High yield: By providing liquidity and participating in lending, users can obtain high returns, especially for users who hold assets for a long time, the returns are more significant.
Safe and reliable: The automatic execution of smart contracts and the immutability of blockchain ensure the security of funds and the reliability of transactions.
Convenient and efficient: Automated operating procedures and low-cost transaction fees allow users to participate in the DeFi ecosystem quickly and easily.
Broad community support: Through the referral reward mechanism, BitPower Loop has established a broad user community, promoting the rapid development and popularization of the platform.
Conclusion
As a blockchain-based decentralized lending smart contract protocol, BitPower Loop is injecting new vitality into the DeFi ecosystem through its unique operating mechanism and significant advantages. It not only provides safe, efficient and transparent financial services, but also attracts a large number of users through an innovative referral reward mechanism. With the continuous development of blockchain technology, BitPower Loop is expected to occupy an important position in the future decentralized finance field and become a trustworthy financial service platform for users.
Through this introduction, readers can understand the basic concepts, operating mechanisms and unique advantages of BitPower Loop in the DeFi ecosystem. I hope this paper can help more people recognize and understand BitPower Loop and provide valuable references for their exploration in the field of blockchain and decentralized finance.@BitPower | woy_ca2a85cabb11e9fa2bd0d | |
1,913,791 | LeetCode Meditations: House Robber II | The description for House Robber II is: You are a professional robber planning to rob houses along... | 26,418 | 2024-07-06T13:02:56 | https://rivea0.github.io/blog/leetcode-meditations-house-robber-ii | computerscience, algorithms, typescript, javascript | The description for [House Robber II](https://leetcode.com/problems/house-robber-ii) is:
> You are a professional robber planning to rob houses along a street. Each house has a certain amount of money stashed. All houses at this place are **arranged in a circle.** That means the first house is the neighbor of the last one. Meanwhile, adjacent houses have a security system connected, and **it will automatically contact the police if two adjacent houses were broken into on the same night**.
>
> Given an integer array `nums` representing the amount of money of each house, return _the maximum amount of money you can rob tonight **without alerting the police**_.
For example:
```
Input: nums = [2, 3, 2]
Output: 3
Explanation: You cannot rob house 1 (money = 2) and then rob house 3 (money = 2), because they are adjacent houses.
```
Or:
```
Input: nums = [1, 2, 3, 1]
Output: 4
Explanation: Rob house 1 (money = 1) and then rob house 3 (money = 3).
Total amount you can rob = 1 + 3 = 4.
```
Or:
```
Input: nums = [1, 2, 3]
Output: 3
```
---
We've seen [the previous problem](https://rivea0.github.io/blog/leetcode-meditations-house-robber) that was very similar, except that the first and last houses weren't counted as adjacent.
In fact, for the previous problem, our final solution looked like this:
```ts
function rob(nums: number[]): number {
let twoPrevMax = 0;
let prevMax = 0;
for (const n of nums) {
let maxUpToN = Math.max(prevMax, n + twoPrevMax);
twoPrevMax = prevMax;
prevMax = maxUpToN;
}
return prevMax;
}
```
We're using a bottom-up approach where we keep the "bottom" two values: `twoPrevMark` keeps the maximum amount of money we can have up until two houses prior. `prevMax` is the maximum until the previous house.
In the `for` loop, we calculate the maximum value for each house. Then, we return `prevMax` as it'll hold the last value, the maximum that we can have of all the houses.
We can reuse this solution, but we can't consider the first and last houses at the same time. In order to do that, we can pass the two versions of `nums` to this function as arguments: one will start from the first house and end at the house previous to the last one:
```ts
nums.slice(0, nums.length - 1)
```
The other will start from the second house and end at the last house:
```ts
nums.slice(1)
```
Then, we can get the maximum of those two values, which will be our return value.
---
First, we can start by renaming the above function to `robHelper`.
Our base cases will stay the same as the previous problem:
```ts
function rob(nums: number[]): number {
if (nums.length === 0) {
return 0;
}
if (nums.length === 1) {
return nums[0];
}
/* ... */
}
```
Then, we can consider those slices separately and get the maximum value from either of them:
```ts
function rob(nums: number[]): number {
/* ... */
return Math.max(
robHelper(nums.slice(0, nums.length - 1)),
robHelper(nums.slice(1)),
);
}
```
And, that's pretty much it. The final version looks like this:
```ts
function rob(nums: number[]): number {
if (nums.length === 0) {
return 0;
}
if (nums.length === 1) {
return nums[0];
}
return Math.max(
robHelper(nums.slice(0, nums.length - 1)),
robHelper(nums.slice(1)),
);
}
function robHelper(houses: number[]): number {
let twoPrevMax = 0;
let prevMax = 0;
for (const n of houses) {
let maxUpToN = Math.max(prevMax, n + twoPrevMax);
twoPrevMax = prevMax;
prevMax = maxUpToN;
}
return prevMax;
}
```
#### Time and space complexity
The time complexity is {% katex inline %} O(n) {% endkatex %} as we're iterating over each house twice. The space complexity is {% katex inline %} O(1) {% endkatex %} because we don't require additional storage whose size will grow as the input size grows.
---
Next up is [Longest Palindromic Substring](https://leetcode.com/problems/longest-palindromic-substring). Until then, happy coding.
| rivea0 |
1,913,790 | Website Chuẩn SEO Là Gì? Cách Đánh Giá Website Chuẩn SEO | Website chuẩn SEO là một website được thiết kế và xây dựng dựa trên các tiêu chí tối ưu hóa công cụ... | 0 | 2024-07-06T13:02:54 | https://dev.to/terus_technique/website-chuan-seo-la-gi-cach-danh-gia-website-chuan-seo-24b5 | website, digitalmarketing, seo, terus |
Website chuẩn SEO là một website được thiết kế và xây dựng dựa trên các tiêu chí tối ưu hóa công cụ tìm kiếm (SEO). Những website này được xây dựng với mục tiêu đạt được những kết quả tốt nhất trên các công cụ tìm kiếm như Google, Bing, Yahoo, v.v. Điều này đồng nghĩa với việc website sẽ hiện diện ở vị trí cao trên trang kết quả tìm kiếm (SERP) khi người dùng tìm kiếm các từ khóa liên quan.
Sở hữu một website chuẩn SEO sẽ mang lại các lợi ích sau:
Tăng lượng truy cập tự nhiên: Website chuẩn SEO sẽ giúp website của bạn xuất hiện ở vị trí cao trên trang kết quả tìm kiếm, từ đó thu hút nhiều lượt truy cập hơn.
Tiết kiệm chi phí marketing: Thay vì phải tốn chi phí quảng cáo, website chuẩn SEO sẽ giúp bạn thu hút khách hàng mục tiêu một cách tự nhiên.
Tăng trải nghiệm người dùng: Website chuẩn SEO được thiết kế với trải nghiệm người dùng (UX) tối ưu, giúp người dùng dễ dàng tìm kiếm và truy cập thông tin.
Terus là một công ty chuyên về [thiết kế và phát triển website chuyên nghiệp](https://terusvn.com/thiet-ke-website-tai-hcm/). Chúng tôi cung cấp dịch vụ thiết kế website chuẩn Insight, bao gồm:
Phân tích và thiết kế giao diện website dựa trên các tiêu chí SEO chuẩn.
Xây dựng cấu trúc nội dung và phân cấp thông tin logic.
Tối ưu hóa các yếu tố SEO như URL, thẻ tiêu đề, thẻ mô tả, v.v.
Đảm bảo website tương thích với các thiết bị di động.
Cung cấp các tính năng hiện đại và trải nghiệm người dùng tối ưu.
Với đội ngũ chuyên gia, Terus cam kết mang lại cho bạn một website chuẩn SEO, góp phần nâng cao vị thế của doanh nghiệp trên Internet.
Nếu bạn đang tìm kiếm một đơn vị cung cấp [dịch vụ thiết kế website chuẩn SEO](https://terusvn.com/thiet-ke-website-tai-hcm/), hãy liên hệ với Terus ngay hôm nay. Chúng tôi sẽ mang lại cho bạn một website chất lượng, góp phần tăng trưởng và thành công của doanh nghiệp.
Tìm hiểu thêm về [Website Chuẩn SEO Là Gì? Cách Đánh Giá Website Chuẩn SEO](https://terusvn.com/thiet-ke-website/website-chuan-seo-la-gi/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
1,913,789 | My WooCommerce Success Story | My entrepreneurial journey began with MovingOut, a real estate listing platform built on WooCommerce.... | 0 | 2024-07-06T13:02:43 | https://dev.to/karugaedwin/my-woocommerce-success-story-1aej | My entrepreneurial journey began with MovingOut, a real estate listing platform built on WooCommerce. We soared in Google rankings, attracting top Kenyan agents. However, competition with deeper pockets wielding Google Ads forced me to pivot.
Next came [CalculatorKenya](https://calculator.co.ke), a WordPress + WooCommerce creation. This platform, offering everything from [PAYE calculations](https://calculator.co.ke/kra-paye-calculator/) to [Pregnancy Dates](https://calculator.co.ke/pregnancy-due-date-calculator/), became a leading Kenyan resource, attracting AdSense and direct advertising revenue. But when the Kenyan Revenue Authority replicated the concept on their .gov website, my revenue declined.
Undeterred, I ventured into e-commerce with [AromaBox](https://aromabox.co.ke/), a haven for aroma diffusers and [Essential oils](https://aromabox.co.ke/gp/essential-oils/), powered by WooCommerce. Inspired by years of using AliExpress and Alibaba, I vividly recall the thrill of my first Sendy delivery. This success story continued with [cuppie menstrual cups](https://cuppie.co.ke/) and [Goexpress](https://goexpress.co.ke/), a courier service connecting Athi River and Nairobi – all built on the dependable foundation of WooCommerce. Last but not least, [DehumidMaster](https://dehumidmaster.co.ke/) a tool rental service for Dehumidifiers and [Thermopro](https://thermopro.co.ke/) for Hygrometers and Food Thermometers
Why WooCommerce is a Hidden Gem
Through these ventures, I discovered the true power of WooCommerce. Here's why this platform is an underrated gem for entrepreneurs:
Flexibility: WooCommerce seamlessly integrates with custom PHP, allowing for easy customization and scalability.
Cost-Effective: Unlike closed-source platforms, WooCommerce is free to use, minimizing initial investment costs.
Scalability: WooCommerce can grow with your business, accommodating a wider product range and increasing traffic without breaking a sweat.
Community Support: A vast and active community at StackOverFlow and users provides invaluable support and resources.
My entrepreneurial journey, fueled by WooCommerce, is a testament to its power. From managing user subscriptions to real estate leads and rental schedules, WooCommerce has been the backbone of my success. If you're looking for a robust and affordable e-commerce platform, look no further than WooCommerce. | karugaedwin | |
1,913,788 | BitPower Loop: A blockchain-based decentralized lending smart contract protocol | Introduction Driven by blockchain technology, decentralized finance (DeFi) has become an important... | 0 | 2024-07-06T13:02:30 | https://dev.to/wot_dcc94536fa18f2b101e3c/bitpower-loop-a-blockchain-based-decentralized-lending-smart-contract-protocol-445f | btc |
Introduction
Driven by blockchain technology, decentralized finance (DeFi) has become an important trend in the field of financial technology. BitPower Loop, as a blockchain-based decentralized lending smart contract protocol, uses smart contract technology to provide a secure, efficient and transparent financial service solution. This article will introduce the core features, operating mechanism and advantages of BitPower Loop in the DeFi ecosystem.
Core features
BitPower Loop is a smart contract protocol deployed on the Ethereum Virtual Machine (EVM). Its main features include:
Decentralization: BitPower Loop is completely decentralized, with no centralized manager or owner, and all operations are automatically executed by smart contracts.
Transparency: All transaction records and smart contract codes are public and transparent, and users can view them at any time.
Security: The immutable nature of blockchain and the automatic execution ability of smart contracts ensure the security of funds and the reliability of transactions.
Efficiency: Automatic processing of lending and liquidity provision through smart contracts greatly improves the efficiency of financial services.
Low cost: Based on the fast transaction speed and low gas fee of Tron blockchain, BitPower Loop has extremely low operating costs.
Operation mechanism
The operation mechanism of BitPower Loop mainly includes the following aspects:
1. Liquidity provision
Users can provide liquidity to the platform through smart contracts, and BitPower Loop will give corresponding returns according to the length of time the liquidity is provided. For example, providing 1 day of liquidity can get a return of 0.4%, and providing 28 days of liquidity can get a return of 24%. This mechanism encourages users to hold assets for a long time and increase the liquidity of the platform.
2. Lending service
BitPower Loop allows users to borrow and lend by mortgaging assets. Borrowers need to provide corresponding collateral, and the platform automatically manages the value of the collateral and the loan amount through smart contracts to ensure the safety and stability of the loan.
3. Automated income distribution
All income and returns are automatically distributed through smart contracts, and users can get the income they deserve without manual operation. This automated mechanism not only improves efficiency, but also reduces the risk of human operation.
4. Referral Rewards
BitPower Loop has a unique referral reward mechanism. Users can invite new users to join through personal referral links and receive referral rewards at different levels. The proportion of referral rewards is calculated based on the referral level and liquidity amount, and up to 21 levels of rewards can be obtained. This mechanism effectively encourages users to promote the platform and expand the user base.
Advantages
BitPower Loop's advantages in the DeFi ecosystem are mainly reflected in the following aspects:
Complete decentralization: There is no centralized manager or owner, and all decisions and operations are automatically executed by smart contracts, ensuring the fairness and transparency of the platform.
High yield: By providing liquidity and participating in lending, users can obtain high returns, especially for users who hold assets for a long time, the returns are more significant.
Safe and reliable: The automatic execution of smart contracts and the immutability of blockchain ensure the security of funds and the reliability of transactions.
Convenient and efficient: Automated operating procedures and low-cost transaction fees allow users to participate in the DeFi ecosystem quickly and easily.
Broad community support: Through the referral reward mechanism, BitPower Loop has established a broad user community, promoting the rapid development and popularization of the platform.
Conclusion
As a blockchain-based decentralized lending smart contract protocol, BitPower Loop is injecting new vitality into the DeFi ecosystem through its unique operating mechanism and significant advantages. It not only provides safe, efficient and transparent financial services, but also attracts a large number of users through an innovative referral reward mechanism. With the continuous development of blockchain technology, BitPower Loop is expected to occupy an important position in the future decentralized finance field and become a trustworthy financial service platform for users.
Through this introduction, readers can understand the basic concepts, operating mechanisms and unique advantages of BitPower Loop in the DeFi ecosystem. I hope this paper can help more people recognize and understand BitPower Loop and provide valuable references for their exploration in the field of blockchain and decentralized finance.@BitPower | wot_dcc94536fa18f2b101e3c |
1,913,787 | Let's do 3 Sum with JavaScript | This problem is similar to the “Two Sum” problem, and how can we come up with an efficient solution... | 0 | 2024-07-06T13:01:21 | https://dev.to/readwanmd/lets-do-3-sum-with-javascript-1j6l | javascript, leetcode, programming | This problem is similar to the “Two Sum” problem, and how can we come up with an efficient solution just by making a small modification. After that, we will also give you a try of the code so that you can understand it well. So let’s get started.
First of all, let’s make sure that we understand the problem statement correctly. In this problem, we have given an array of integers, and we have to find out all the unique triplets such that their sum is equal to 0, and there is one more condition: we cannot choose the same index twice. It simply means that if we have chosen an index, we cannot use it again to find the total sum of 0.
So given all of these conditions, we have to find out all of the possible triplets. Let us look at our sample test cases. In our first test case [-1, 0, 1, 2, -1, -4], right now, what are some of the triplets that, when summed, will give us the total sum of 0. First of all, I can find a triplet of -1, -1, and 2. If we add all of them, we will get the sum 0, and similarly, we can get one more triplet that will be 0, 1, and -1. In this particular array, we have two unique triplets by which we can form the total sum as 0. right? So for this particular test case, these two triplets will be our answer.
In our next test case, we have [0, 1, 1], so this is the only triplet, and if we sum all of these elements, the sum will not be 0, right? So for this particular test case, an empty array will be the answer.
Now let us look at our third test case. we can see that once again we have an array [0, 0, 0], and all of its elements are zero. Now we know that it says that these elements cannot be duplicated, but if we notice, we are not duplicating the indices. correct? Only the element is duplicated, so even if two elements have the same value and they are at different indices, we can pick them, so one such triplet that can be formed will be 0 0, and 0, and if we add them all up, we get the total sum of 0.
So for this particular test, only this triplet will be answered.
I want to let you know that this problem is based on a similar problem, “Two Sum,” where we have given an array and have to find out two integers whose sum equals a target value. I want you to take a recap and realize what we did wrong with our original and what we did right. We spotted this array correctly, and as soon as we sort it, we get our array something like [-4, -1, -1, 0, 1, 2] and let us have to find out two values that sum up and give our target value of -3.
_So what was the approach over here? We sorted the array, and then what did we do?_
We took two pointers first in the beginning, and then at the very end, we summed both of these values, so my current sum will be -4 plus 2 and that is -2. Now since this target value is smaller than my sum, that means we have to pick a smaller number, and how did we pick a smaller number? We moved our right pointer one space backward, and that is how we will try to get the sum as -4 plus 1, and that will be -3 for our pair.
_So just try to keep this in mind, and based upon this, we will build an efficient solution to our actual problem._
So once again, we have a sample array, and what did we do? First of all, we sorted it as soon as we found the array, and the array will look something like this: [-4, -1, -1, 0, 1, 2], and now we have to convert this problem to the two-sum problem.
So here is something that we can do. What we can do is pick our first element to be -4, so out of the triplet we get one value or we fix one value so that one of our values will be minus four, and we make a condition so that one of my values is -4, and what if the array that I’m remaining with is this entire array [-1, -1, 0, 1, 2]. right?
Now notice what our problem has reduced to: using this array, we can once again take a left pointer and a right pointer. correct? and we have one value that is fixed for now. Instead of finding the triplets, we have to find that pair plus this fixed value, and our total sum should be 0.
So we will apply the same approach as ours to some questions, and what we’re going to do is take the minor 4 value and then try to find a triplet such that when I add these three values, my total sum should be 0.
_Just wait for a little while, and all of this will start making sense._
For this particular condition, when we choose our first value as -4, we will not find a triplet, so this part is done. Now try to understand that we took care of all the triplets that could start with -4 right now. we have to move ahead, so what do we do this time? we are going to choose -1 as our fixed value. That is the value at the first index, so we fix our value to -1, and then what is the array that I’m remaining with? We are remaining with only [-1, 0, 1, 2]. So we have an array over here.
So once again, our problem changes. Now the fixed value is -1, and once again, we will take two pointers left and right, and then we will try to come up with a pair plus this -1, and the sum should be 0.
This should give us some triplets, so we have a value of -1, and then what can we do? we can try to find a triplet of -1 and 2 that will be 0, and then if we move ahead, we will find one more triplet of -1 plus 0 and then 1. that is once again equal to 0. So I found two triplets, and one added gives us the sum as 0, which is correct.
_I hope it has started to make a little bit of sense, so let us keep moving ahead._
This time I’m done with this -1 again, and if we see we have one more -1 for this time, I’m going to fix this value as my constant value. What is the array [0, 1, 2] that I’m remaining with? I am remaining with 0 1 and 2. So once again, my problem reduces to 0, 1, and 2, and I will take a left pointer and a right pointer, this is my fixed value, so once again, I will try to find a pair along with the sixth value and try to get the total reward of 0. This time I will get one more triplet, which is -1 plus 0 plus 1, and that is equal to 0. Just keep moving ahead now, so now I will fix my next value, which is 0, so I fix it, and what are the remaining values 1 and 2? So this is the new use case that I have to work with, and if we realize this, it will once again not give me any triplets. So while going through all of this, how many triplets did we find? we found this, this, and this, so there are three triplets. Since the problem asks for unique triplets, we can add all of these triplets to a function. All the duplicate values will just go away, and we cannot have duplicate elements left with our answer, and these will be our unique triplets.
---
```javascript
const threeSum = function (nums) {
const target = 0;
nums = nums.sort((a, b) => a - b);
let output = [];
for (let i = 0; i < nums.length; i++) {
let start = i + 1;
let end = nums.length - 1;
while (start < end) {
let sum = nums[i] + nums[start] + nums[end];
if (sum == target) {
output.push([nums[i], nums[start], nums[end]]);
start++;
end--;
} else if (sum < target) {
start++;
} else {
end--;
}
}
}
// remove duplicate arrays
const uniqueArrays = new Set(output.map(JSON.stringify));
const result = Array.from(uniqueArrays, JSON.parse);
return result;
};
let nums = [-1, 0, 1, 2, -1, -4];
console.log(threeSum(nums));
```
---
In conclusion, the problem at hand is to find unique triplets in an array such that their sum equals zero, with the constraint of not using the same index twice. To approach this efficiently, we draw parallels with the “Two Sum” problem, sorting the array and fixing one element at a time to transform the problem into finding pairs that sum up to a target value. By iteratively fixing elements and applying the two-pointer technique on the remaining array, we can identify unique triplets that satisfy the given conditions.
The key insight is to break down the problem into smaller subproblems, where each fixed element reduces the problem to finding pairs in the remaining array. This approach helps us avoid duplicate triplets and efficiently navigate through the array to identify all valid solutions.
By following this method and carefully handling edge cases, such as arrays with identical elements at different indices, we can find and accumulate unique triplets that meet the criteria. The final step involves ensuring uniqueness by eliminating duplicate triplets before presenting the solution.
Overall, this strategy optimizes the solution to the problem, providing a clear and systematic approach to finding unique triplets with a sum of zero in a given array.
_And Finally,
Please don’t hesitate to point out any mistakes in my writing and any errors in my logic.
I’m appreciative that you read my piece._ | readwanmd |
1,913,785 | Tối Ưu Hóa Giao Diện Người Dùng Cho Website | Tối ưu hóa giao diện website là quá trình cải thiện thiết kế, bố cục và các yếu tố trực quan của một... | 0 | 2024-07-06T12:56:49 | https://dev.to/terus_technique/toi-uu-hoa-giao-dien-nguoi-dung-cho-website-2752 | website, digitalmarketing, seo, terus |
[Tối ưu hóa giao diện website](https://terusvn.com/thiet-ke-website-tai-hcm/) là quá trình cải thiện thiết kế, bố cục và các yếu tố trực quan của một website nhằm tạo trải nghiệm tốt hơn cho người dùng, thúc đẩy chuyển đổi (conversion) và tăng hiệu quả SEO.
Mục tiêu tối ưu hóa giao diện website
Nâng cao trải nghiệm người dùng (UX): Giao diện website dễ dàng sử dụng, trực quan và thu hút người dùng.
Thúc đẩy chuyển đổi (Conversion): Thiết kế giao diện kích thích người dùng thực hiện các hành động mong muốn như đăng ký, mua hàng, liên hệ,...
Tăng hiệu quả SEO: Giao diện website tối ưu sẽ giúp cải thiện các tín hiệu quan trọng cho việc xếp hạng trên công cụ tìm kiếm.
Cách tối ưu hóa giao diện website tốt nhất hiện tại
Phông chữ tạo sự khác biệt: Lựa chọn phông chữ độc đáo, dễ đọc và phù hợp với thương hiệu.
Độ dài văn bản: Sử dụng nội dung ngắn gọn, súc tích để thu hút sự chú ý.
Cẩn thận với các nút trên màn hình: Đặt các nút CTA rõ ràng, dễ nhấn.
Sử dụng nút thay vì chữ: Thay thế các liên kết dạng văn bản bằng các nút trực quan hơn.
Sử dụng icon/hình ảnh tương ứng với nội dung: Kết hợp hình ảnh, icon để tăng tính trực quan.
Tận dụng khoảng trắng và màu sắc để phân cách: Sử dụng khoảng trắng và màu sắc hài hòa để tạo sự tổ chức, dễ quan sát.
Hạn chế sử dụng nhiều màu khi thiết kế giao diện: Chọn bảng màu ít, tạo sự nhất quán và dễ nhìn.
Tối ưu hóa giao diện website là một quá trình quan trọng nhằm mang lại trải nghiệm tốt hơn cho người dùng, thúc đẩy chuyển đổi và tối ưu hóa hiệu quả SEO. Bằng cách áp dụng các phương pháp và xu hướng [thiết kế giao diện website hiện đại](https://terusvn.com/thiet-ke-website-tai-hcm/), các doanh nghiệp có thể nâng cao tương tác, thu hút và giữ chân khách hàng.
Tìm hiểu thêm về [Tối Ưu Hóa Giao Diện Người Dùng Cho Website](https://terusvn.com/thiet-ke-website/cach-toi-uu-hoa-giao-dien-website/)
Digital Marketing:
· [Dịch vụ Facebook Ads](https://terusvn.com/digital-marketing/dich-vu-facebook-ads-tai-terus/)
· [Dịch vụ Google Ads](https://terusvn.com/digital-marketing/dich-vu-quang-cao-google-tai-terus/)
· [Dịch vụ SEO Tổng Thể](https://terusvn.com/seo/dich-vu-seo-tong-the-uy-tin-hieu-qua-tai-terus/)
Thiết kế website:
· [Dịch vụ Thiết kế website chuẩn Insight](https://terusvn.com/thiet-ke-website/dich-vu-thiet-ke-website-chuan-insight-chuyen-nghiep-uy-tin-tai-terus/)
· [Dịch vụ Thiết kế website](https://terusvn.com/thiet-ke-website-tai-hcm/) | terus_technique |
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