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1,910,247 | Temporary saving of work using git stash | Introduction git stash to temporarily save changes you are working on. How to... | 0 | 2024-07-03T13:34:12 | https://dev.to/untilyou58/temporary-saving-of-work-using-git-stash-hpl | git, beginners, tutorial, programming | ## Introduction
`git stash` to temporarily save changes you are working on.
## How to use it
### Save changes temporarily
```cmd
git stash
```
This saves the changes in your current working directory to a stash, leaving your working directory clean.
### Apply the stash
```cmd
git stash apply
```
This applies the latest stash to the current working directory. The stash remains in place and can be reapplied.
### Apply and remove the stash
```cmd
git stash pop
```
This will apply the latest stash and remove it from the stash at the same time.
### Display a list of stashes
```cmd
git stash list
```
This will display a list of saved stashes.
### Apply a specific stash
```cmd
git stash apply stash@{1}
```
If multiple stashes exist, you can apply a specific stash by using the format stash@{n}.
### Drop a specific stash
```cmd
git stash drop stash@{1}
```
To drop a specific stash, use the following command.
This will remove the stash at stash@{1}.
## Conclusion
A git stash is useful for temporarily storing changes you are working on so you can do other work or switch branches.
| untilyou58 |
1,910,248 | Automate and Scale with Cutting-Edge DevOps Solutions | In today's fast-paced digital landscape, businesses are increasingly turning to DevOps practices to... | 0 | 2024-07-03T13:34:04 | https://dev.to/jasonstathum6/automate-and-scale-with-cutting-edge-devops-solutions-3fe5 | devops, ai | In today's fast-paced digital landscape, businesses are increasingly turning to DevOps practices to streamline their development processes and accelerate time-to-market. At the heart of DevOps lies the philosophy of merging development (Dev) and operations (Ops) to foster collaboration and efficiency throughout the software development lifecycle. However, the true power of DevOps extends far beyond just collaboration—it lies in its ability to automate and scale operations with cutting-edge solutions.
## The Power of Automation in DevOps
Automation forms the backbone of DevOps practices, enabling teams to automate repetitive tasks, reduce human error, and speed up deployment cycles. By leveraging automation tools for configuration management, continuous integration/continuous deployment (CI/CD), and infrastructure as code (IaC), organizations can achieve consistency, reliability, and scalability across their development and operations environments.
## Key Benefits of Automation:
**Enhanced Efficiency:** Automating manual processes frees up valuable time and resources, allowing teams to focus on innovation rather than routine tasks.
**Improved Quality:** Automated testing and deployment pipelines ensure that software updates are thoroughly tested and deployed consistently, minimizing the risk of bugs and failures.
**Faster Time-to-Market:** Rapid, automated deployments enable organizations to release new features and updates to customers more frequently, gaining a competitive edge in the market.
## Scaling Operations with DevOps
As businesses grow, so do the demands on their IT infrastructure and development teams. DevOps provides the framework and tools necessary to scale operations efficiently, ensuring that systems can handle increased workload and complexity without sacrificing performance or reliability.
## Strategies for Scaling with DevOps:
**Elastic Infrastructure:** Utilizing cloud computing and containerization technologies (such as Docker and Kubernetes) allows organizations to dynamically scale their infrastructure based on demand, ensuring optimal performance and cost-efficiency.
**Horizontal and Vertical Scaling:** DevOps practices enable both horizontal scaling (adding more instances of servers or containers) and vertical scaling (increasing the resources of existing servers or containers), providing flexibility to meet changing business needs.
**Monitoring and Optimization:** Continuous monitoring and performance optimization are integral to scaling operations effectively. DevOps teams leverage monitoring tools to identify bottlenecks, optimize resource allocation, and proactively address potential issues before they impact end-users.
## Embracing Cutting-Edge DevOps Solutions
To stay competitive in today's digital economy, organizations must continuously evolve their DevOps practices and adopt cutting-edge solutions that drive innovation and efficiency. Emerging technologies such as serverless computing, microservices architecture, and AI-driven analytics are transforming how [DevOps teams](https://parangat.com/blog/devops-consulting-services/) design, deploy and manage software applications.
## Implementing Advanced DevOps Solutions:
**Serverless Computing:** Eliminates the need for managing infrastructure, allowing developers to focus solely on writing code and deploying functions, thereby reducing operational overhead and improving scalability.
**Microservices Architecture:** This breaks down monolithic applications into smaller, independent services that can be developed, deployed, and scaled independently, promoting agility and resilience.
**AI and Machine Learning:** Integrating AI-driven analytics and automation into DevOps processes enables predictive analytics, anomaly detection, and intelligent decision-making, enhancing operational efficiency and reliability.
## Conclusion
In conclusion, DevOps is not just a methodology—it's a transformative approach to software development and operations that empowers organizations to automate, scale, and innovate with unparalleled efficiency. By embracing cutting-edge DevOps solutions and practices, businesses can achieve faster time-to-market, improved scalability, and sustained competitive advantage in an increasingly digital world.
Are you ready to automate and scale your operations with cutting-edge DevOps solutions? Contact us today to discover how our expert [DevOps services](https://www.parangat.com/devops-services-and-solutions) can drive your business forward.
| jasonstathum6 |
1,910,246 | Finding Numbers Divisible by 3 and 5 | Hey Dev Community! Are you diving into C programming and looking for a hands-on exercise to sharpen... | 0 | 2024-07-03T13:32:11 | https://dev.to/moksh57/finding-numbers-divisible-by-3-and-5-30cb | c, programming |
Hey Dev Community!
Are you diving into C programming and looking for a hands-on exercise to sharpen your skills? I've just published a new blog post where I walk you through writing a simple C program to find numbers between 1 and 50 that are divisible by both 3 and 5. This exercise is perfect for beginners aiming to understand loops and conditional statements in C.
In the blog, I cover:
-
Setting up a for loop to iterate through numbers
-
Using conditional statements to check for divisibility
-
Printing the results and counting the qualifying numbers
Check out the full blog [here](https://mokshelearning.blogspot.com/2024/07/19-program-1-To-50-DivisibleBy-3-and-5.html)
I'd love to hear your feedback and any questions you may have. Let's learn and code together! 💻🎉 | moksh57 |
1,910,245 | My first Django project, the problem I faced and how I overcome it. | I started learning Django framework some months ago, as a developer I believe that the main purpose... | 0 | 2024-07-03T13:26:19 | https://dev.to/jamiukayode27/my-first-django-project-the-problem-i-faced-and-how-i-overcome-it-4j23 | I started learning Django framework some months ago, as a developer I believe that the main purpose of learning is to use it to solve a problem and to be able to solve a big problem you must start from solving small small problems, by pushing and critical thinking I know I will be able to solve a problem where world 🌎 will be beneficiary. Before I started my journey as a backend developer, whenever I signed up on a any website with a particular information, whenever I want to sign in, if I didn't provide the information that I provided when I was signing up, I won't be able to login, I was wondering how this works, how computer understand that the information I wanted to use to log in is not as the same with the one I used during sign up, and some other things I used to think about on how it works. So after I completed my course as a backend developer, I also tried to create an API using Django where a user will provide their email and password to sign up and their information will store in database (MySQL) and if user can't provide the same it won't be able to login, after I was done with it, I tested it using Postman during the development stage, after that I connected it with fronted project (bootstrap) for client side. And everything works perfectly. But during the development stage I encounter some issues but I always run to Google to look for the solution and most of the solution I got it from stack overflow and some time I read Django documentation too.
Conclusion
Whatever you can dream in this life you can achieve it, where you started doesn't matter but have a clear goal and as a developer you must have it in your mind that you are a problem solver and the people that will solve problems must be someone who can think and reason, I also learned from this small project importance of connection and being with people that can help. That what makes me look forward to connect to great people in tech industry and I found HNG internship my first day in workspace made me connect to professional in tech industry, who can solve big problems and tackle them with critical thinking and they are also always available to help when you are stuck. What are you looking for join today [(https://hng.tech/internship]
and your dream will be achieved because it's full with experienced people, networking opportunities and it changes career. I'm happy to be part of this great community, look forward to see you. Join now and thank me later [https://hng.tech/hire] | jamiukayode27 | |
1,910,244 | SDK | Комплект для разработки программного обеспечения ( SDK ) — это набор инструментов для разработки... | 0 | 2024-07-03T13:23:13 | https://dev.to/asadbekit/sdk-1k6n | Комплект для разработки программного обеспечения ( SDK ) — это набор инструментов для разработки программного обеспечения в одном устанавливаемом пакете. Они облегчают создание приложений, имея компилятор, отладчик и иногда программную структуру . Они обычно специфичны для комбинации аппаратной платформы и операционной системы. Для создания приложений с расширенными функциями, такими как реклама, push-уведомления и т. д., большинство разработчиков прикладного программного обеспечения используют специальные комплекты для разработки программного обеспечения.
Некоторые SDK требуются для разработки платформенно-зависимых приложений. Например, для разработки приложения Android на платформе Java требуется Java Development Kit . Для приложений iOS (apps) требуется iOS SDK . Для универсальной платформы Windows может использоваться .NET Framework SDK . Существуют также SDK, которые добавляют дополнительные функции и могут быть установлены в приложениях для предоставления аналитики, данных об активности приложения и вариантов монетизации. Некоторые известные создатели этих типов SDK включают Google, Smaato, InMobi и Facebook.
SDK может принимать форму интерфейсов прикладного программирования [1] в виде библиотек многократно используемых функций на устройстве, используемых для взаимодействия с определенным языком программирования , или может быть таким же сложным, как аппаратно-зависимые инструменты, которые могут взаимодействовать с определенной встроенной системой . [2] Общие инструменты включают средства отладки и другие утилиты , часто представленные в интегрированной среде разработки . [3] SDK могут включать образцы программного обеспечения и/или технические заметки вместе с документацией и учебными пособиями, помогающими прояснить моменты, изложенные в первичном справочном материале. [4] [5]
SDK часто включают лицензии , которые делают их непригодными для создания программного обеспечения, предназначенного для разработки по несовместимой лицензии. Например, проприетарный SDK, как правило, несовместим с разработкой свободного программного обеспечения , в то время как GNU General Public License 'd SDK может быть несовместим с разработкой проприетарного программного обеспечения по юридическим причинам. [6] [7] Однако SDK, созданные по GNU Lesser General Public License, обычно можно использовать для проприетарной разработки. [8] В случаях, когда базовая технология является новой, SDK могут включать аппаратное обеспечение. Например, AirTag 's 2021 Near-field communication SDK включал как платную, так и считывающую половины необходимого аппаратного стека. [9]
Среднестатистическое мобильное приложение Android реализует 15,6 отдельных SDK, а игровые приложения реализуют в среднем 17,5 различных SDK. [10] Наиболее популярными категориями SDK для мобильных приложений Android являются аналитика и реклама. [10]
SDK могут быть небезопасными (потому что они реализованы в приложениях, но запускают отдельный код). Вредоносные SDK (с честными намерениями или нет) могут нарушать конфиденциальность данных пользователей , ухудшать производительность приложений или даже приводить к запрету приложений в Google Play или App Store . [11] Новые технологии позволяют разработчикам приложений контролировать и отслеживать клиентские SDK в режиме реального времени.
Поставщики SDK для конкретных систем или подсистем иногда заменяют термин software более конкретным термином . Например, и Microsoft [12] , и Citrix [13] предоставляют комплект для разработки драйверов для разработки драйверов устройств . | asadbekit | |
1,910,243 | Temu coupon code AAV67880 OR AAF63818: 2024 for existing customers | Temu provides exclusive coupons and vouchers for specific products, allowing you to save more on your... | 0 | 2024-07-03T13:23:06 | https://dev.to/sonuprasad/temu-coupon-code-aav67880-or-aaf63818-2024-for-existing-customers-4c9j | Temu provides exclusive coupons and vouchers for specific products, allowing you to save more on your favorite items. Make sure to check the product pages for any available discounts and apply them at checkout.
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| sonuprasad | |
1,910,235 | CLR | Common Language Runtime (англ. CLR — общеязыковая исполняющая среда) — исполняющая среда для... | 0 | 2024-07-03T13:21:57 | https://dev.to/fazliddin7777/clr-3p3e | Common Language Runtime (англ. CLR — общеязыковая исполняющая среда) — исполняющая среда для байт-кода CIL (MSIL), в который компилируются программы, написанные на .NET-совместимых языках программирования (C#, Managed C++, Visual Basic .NET, F# и прочие). CLR является одним из основных компонентов пакета Microsoft .NET Framework.
Среда CLR является реализацией спецификации CLI (англ. Common Language Infrastructure), спецификации общеязыковой инфраструктуры компании Microsoft.
CLR реализует виртуальную систему выполнения (VES), как определено в стандарте Common Language Infrastructure (CLI), изначально разработанном самой Microsoft. Общедоступный стандарт определяет спецификацию общеязыковой инфраструктуры.
CLR компилирует код приложения на языке CIL (реализация компиляции которого компанией Microsoft называется MSIL) во время его исполнения, а также предоставляет MSIL-программам (а следовательно, и программам, написанным на языках высокого уровня, поддерживающих .NET Framework) доступ к библиотеке классов .NET Framework, или так называемой .NET FCL (англ. Framework Class Library). | fazliddin7777 | |
1,910,227 | Open Source Scams | Look carefully at the image for this article. Did you see anything "funny" about it? Let me enlighten... | 0 | 2024-07-03T13:21:14 | https://dev.to/polterguy/open-source-scams-4jb3 | lowcode, security | Look carefully at the image for this article. Did you see anything _"funny"_ about it? Let me enlighten you.
What you're looking at is an Open Source project. They're worth 1.2 billion US dollars according to their latest VC evaluation. Specifically you're looking at the history of their _"Star gazers"_ according to GitHub. They were able to get a couple of hundreds of millions in VC funding from tier one VC funds in Silicon Valley some few years back ago.
Initially you can see organic growth. Then somewhere in early 2021 they got some traction, probably because of attention related to their VC funding, alternatively because of a major release going a little bit viral somewhere.
Afterwards you see it flattening out more, but still having some _"hickups"_ here and there over the next 2 years, until December of 2022, at which point the curve goes completely _"flat"_. Flat here implies it goes into a 100% perfectly straight line.
What you're looking at is what scientists will refer to as _"a statistical anomaly impossible to explain using natural phenomenas"_. Such anomalies was the reason why Bernie Madoff was suspected of running a Ponzi scheme. His numbers were simply too good to believe.
Anomalies such as these simply don't occur in _"natural systems"_ because of the laws of entropy prohibiting nature from creating such straight lines. Don't believe me, go find something resembling that line in nature.
Their line _should_ be moving more like a _"rugged line"_ with ups and down over time. Below I have emphasised the largest anomaly in the graph ...
Basically, since the end of 2022 _they probably didn't get more than 1% organic likes on their GitHub project_!
## They bought GitHub Accounts
I tried to write about this a couple of years ago, the exact same company, but I didn't understand why so many of their _"Star gazers"_ were mature GitHub accounts back then - So I started questioning myself, not 100% sure if I was right.
Yesterday I understood how they do it. To understand how they did it look carefully at the following screenshot from an E-Commerce website ...
Notice how they're even selling _"mature GitHub accounts"_? Implying accounts older than one year, with actual content and activity?
Interestingly, their AI chatbot is a Shopify chatbot, so they're probably running their little scam as a Shopify website ... 🤪
> Got scam ideas? No problem bro, we at Shopify will help you sell it 😂
## The Open Source VC Hoax
I don't know where the above merchant is getting these GitHub usernames. If I should guess, it's probably a combination of purchasing GitHub accounts from students, combined with having their click farm employees registering new accounts, for then to store these in _"their aging vault"_ for some months before they're putting these out for sale.
They're also selling Gmail accounts, even aged Gmail accounts, so they've obviously got no shortage of handles you can buy to artificially inflate your open source project with fake likes. The reason anyone would do this is two folded.
1. It gives justification for their evaluation, since VC firms and others will count star gazers, before evaluating the company
2. It creates social proof, making others believing in that the platform must be valuable and good, since so many users have been liking it
> Basically, it's a hoax! A good old fashion scam
The name of the company is [Supabase](https://supabase.com), but they're not the only company doing this. If I'd guess I say probably 80 to 98 percent of every single VC funded company out there are using similar tactics to artificially inflate their evaluation.
There are even entire libraries written about such mechanisms, most of these are using words such as Pyramid scheme or Ponzi scheme to explain what's going on.
You will find the same mechanisms at _every single social game_ in existence out there. Luckily for those applying such tactics, few are smart enough to smell them out, and even fewer are willing to publicly write about them - Such as me.
To understand the price we collectively pay for such scams, I want you to carefully read the entire article below.
* [How I got 50 Followers on ProductHunt in 5 Minutes using AI](https://ainiro.io/blog/how-i-got-50-followers-on-producthunt-in-5-minutes-using-ai)
... then come tell me how this is just some _"innocent gaming hustling some few bucks out of rich investors"_ ...
## The price for your Soul
I did some math on the above merchant's offers, and to purchase 68,000 accounts such as Supabase probably did, would cost you somewhere between $70,000 and $1.2 million, depending upon how many mature accounts you'd want.
Supabase got some 100 million in VC funding in total, implying they spent less than 0.5% of their liquidity on purchasing their likes. For a CFO and a CMO strategising to figure out how to grow their company, this is practically _"free marketing"_, sustaining the illusion of a popular project worth billions of dollars, allowing them to milk their investors for even more money, to buy whatever it is they want to buy for other peoples' money ...
However, once money is involved, it's still security fraud - Especially once institutionalised investors are involved. The brilliance of the scam is that the VC firm will never publicly admit they were taken for a ride, it's simply too embarrassing for them, so Supabase probably got away 100% clean ...
> The irony ... 😕
Supabase's CEO once patronised me by saying; _"Your system is really good at sending emails"_ - Well, I wouldn't expect anything more from somebody who can only deliver fake value based upon Ponzi schemes, created to dupe money from investors, by gaming the world ...
... maybe I should send his investors some emails ...? 😉
## Conclusion
Since late 2022, less than 1% of Supabase's GitHub star gazers are actually real living human being, the rest are likes they've purchased. In the period before that, starting from 2021, probably 95% or more of their likes are fake.
Any mathematician can verify that what I tell you is the truth. It is simply statistically impossible for nature to create such a smooth line in a natural system ...
This implies that when Supabase is telling you _"We've installed 1 million databases"_, you would be wise removing at least 2 zeros from their numbers, implying they've probably not got more than some 3,000 to 4,000 actual likes, and probably somewhere around 10,000 to 100,000 real legitimate users.
The above should put their evaluation down by at least 1 to 3 zeros, implying instead of being worth 1 billion US dollars, their real evaluation is rather somewhere between 10 million dollars to 100 million dollars somewhere ...
## A Healthy GitHub Project
**Edit** - Below is how a healthy GitHub project should look like. This project obviously has exclusively organic Stargazers.
The straight line you find in projects such as Supabase, and also MongoDB for that matter, is simply not possible to explain using any known natural phenomenas.
**Edit** - _"That feeling"_ when you know somebody is **really, really, really** angry at you ... 😂
**Edit 2** - A follow up article about [Supabase versus Magic](https://dev.to/polterguy/supabase-versus-magic-you-win-5n) to explain what I _really_ feel about it ... | polterguy |
1,901,703 | Optimizing RAG Through an Evaluation-Based Methodology | In today's fast-paced, information-rich world, AI is revolutionizing knowledge management. The... | 0 | 2024-07-03T13:18:22 | https://qdrant.tech/articles/rapid-rag-optimization-with-qdrant-and-quotient/ | rag, tutorial, opensource, datascience | In today's fast-paced, information-rich world, AI is revolutionizing knowledge management. The systematic process of capturing, distributing, and effectively using knowledge within an organization is one of the fields in which AI provides exceptional value today.
> The potential for AI-powered knowledge management increases when leveraging Retrieval Augmented Generation (RAG), a methodology that enables LLMs to access a vast, diverse repository of factual information from knowledge stores, such as vector databases.
This process enhances the accuracy, relevance, and reliability of generated text, thereby mitigating the risk of faulty, incorrect, or nonsensical results sometimes associated with traditional LLMs. This method not only ensures that the answers are contextually relevant but also up-to-date, reflecting the latest insights and data available.
While RAG enhances the accuracy, relevance, and reliability of traditional LLM solutions, **an evaluation strategy can further help teams ensure their AI products meet these benchmarks of success.**
## Relevant tools for this experiment
In this article, we’ll break down a RAG Optimization workflow experiment that demonstrates that evaluation is essential to build a successful RAG strategy. We will use Qdrant and Quotient for this experiment.
[Qdrant](https://qdrant.tech/) is a vector database and vector similarity search engine designed for efficient storage and retrieval of high-dimensional vectors. Because Qdrant offers efficient indexing and searching capabilities, it is ideal for implementing RAG solutions, where quickly and accurately retrieving relevant information from extremely large datasets is crucial. Qdrant also offers a wealth of additional features, such as quantization, multivector support and multi-tenancy.
Alongside Qdrant we will use Quotient, which provides a seamless way to evaluate your RAG implementation, accelerating and improving the experimentation process.
[Quotient](https://www.quotientai.co/) is a platform that provides tooling for AI developers to build evaluation frameworks and conduct experiments on their products. Evaluation is how teams surface the shortcomings of their applications and improve performance in key benchmarks such as faithfulness, and semantic similarity. Iteration is key to building innovative AI products that will deliver value to end users.
> 💡 The [accompanying notebook](https://github.com/qdrant/qdrant-rag-eval/tree/master/workshop-rag-eval-qdrant-quotient) for this exercise can be found on GitHub for future reference.
## Summary of key findings
1. **Irrelevance and Hallucinations**: When the documents retrieved are irrelevant, evidenced by low scores in both Chunk Relevance and Context Relevance, the model is prone to generating inaccurate or fabricated information.
2. **Optimizing Document Retrieval**: By retrieving a greater number of documents and reducing the chunk size, we observed improved outcomes in the model's performance.
3. **Adaptive Retrieval Needs**: Certain queries may benefit from accessing more documents. Implementing a dynamic retrieval strategy that adjusts based on the query could enhance accuracy.
4. **Influence of Model and Prompt Variations**: Alterations in language models or the prompts used can significantly impact the quality of the generated responses, suggesting that fine-tuning these elements could optimize performance.
Let us walk you through how we arrived at these findings!
## Building a RAG pipeline
To evaluate a RAG pipeline , we will have to build a RAG Pipeline first. In the interest of simplicity, we are building a Naive RAG in this article. There are certainly other versions of RAG :
The illustration below depicts how we can leverage a RAG Evaluation framework to assess the quality of RAG Application.
We are going to build a RAG application using Qdrant’s Documentation and the premeditated [hugging face dataset]([https://huggingface.co/datasets/atitaarora/qdrant_doc](https://huggingface.co/datasets/atitaarora/qdrant_doc)).
We will then assess our RAG application’s ability to answer questions about Qdrant.
To prepare our knowledge store we will use Qdrant, which can be leveraged in 3 different ways as below :
```python
##Uncomment to initialise qdrant client in memory
#client = qdrant_client.QdrantClient(
# location=":memory:",
#)
##Uncomment below to connect to Qdrant Cloud
client = qdrant_client.QdrantClient(
os.environ.get("QDRANT_URL"),
api_key=os.environ.get("QDRANT_API_KEY"),
)
## Uncomment below to connect to local Qdrant
#client = qdrant_client.QdrantClient("http://localhost:6333")
```
We will be using [Qdrant Cloud](https://cloud.qdrant.io/login) so it is a good idea to provide the `QDRANT_URL` and `QDRANT_API_KEY` as environment variables for easier access.
Moving on, we will need to define the collection name as :
```python
COLLECTION_NAME = "qdrant-docs-quotient"
```
In this case , we may need to create different collections based on the experiments we conduct.
To help us provide seamless embedding creations throughout the experiment, we will use Qdrant’s native embedding provider [Fastembed]([https://qdrant.github.io/fastembed/](https://qdrant.github.io/fastembed/)) which supports [many different models]([https://qdrant.github.io/fastembed/examples/Supported_Models/](https://qdrant.github.io/fastembed/examples/Supported_Models/)) including dense as well as sparse vector models.
We can initialize and switch the embedding model of our choice as below :
```python
## Declaring the intended Embedding Model with Fastembed
from fastembed.embedding import TextEmbedding
## General Fastembed specific operations
##Initilising embedding model
## Using Default Model - BAAI/bge-small-en-v1.5
embedding_model = TextEmbedding()
## For custom model supported by Fastembed
#embedding_model = TextEmbedding(model_name="BAAI/bge-small-en", max_length=512)
#embedding_model = TextEmbedding(model_name="sentence-transformers/all-MiniLM-L6-v2", max_length=384)
## Verify the chosen Embedding model
embedding_model.model_name
```
Before implementing RAG, we need to prepare and index our data in Qdrant.
This involves converting textual data into vectors using a suitable encoder (e.g., sentence transformers), and storing these vectors in Qdrant for retrieval.
```python
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain.docstore.document import Document as LangchainDocument
## Load the dataset with qdrant documentation
dataset = load_dataset("atitaarora/qdrant_doc", split="train")
## Dataset to langchain document
langchain_docs = [
LangchainDocument(page_content=doc["text"], metadata={"source": doc["source"]})
for doc in dataset
]
len(langchain_docs)
#Outputs
#240
```
You can preview documents in the dataset as below :
```python
## Here's an example of what a document in our dataset looks like
print(dataset[100]['text'])
```
## Evaluation dataset
To measure the quality of our RAG setup, we will need a representative evaluation dataset. This dataset should contain realistic questions and the expected answers.
Additionally, including the expected contexts for which your RAG pipeline is designed to retrieve information would be beneficial.
We will be using a [prebuilt evaluation dataset](https://huggingface.co/datasets/atitaarora/qdrant_doc_qna).
If you are struggling to make an evaluation dataset for your use case , you can use your documents and some techniques described in this [notebook](https://github.com/qdrant/qdrant-rag-eval/blob/master/synthetic_qna/notebook/Synthetic_question_generation.ipynb)
### Building the RAG pipeline
We establish the data preprocessing parameters essential for the RAG pipeline and configure the Qdrant vector database according to the specified criteria.
Key parameters under consideration are:
- **Chunk size**
- **Chunk overlap**
- **Embedding model**
- **Number of documents retrieved (retrieval window)**
Following the ingestion of data in Qdrant, we proceed to retrieve pertinent documents corresponding to each query. These documents are then seamlessly integrated into our evaluation dataset, enriching the contextual information within the designated **`context`** column to fulfil the evaluation aspect.
Next we define methods to take care of logistics with respect to adding documents to Qdrant
```python
def add_documents(client, collection_name, chunk_size, chunk_overlap, embedding_model_name):
"""
This function adds documents to the desired Qdrant collection given the specified RAG parameters.
"""
## Processing each document with desired TEXT_SPLITTER_ALGO, CHUNK_SIZE, CHUNK_OVERLAP
text_splitter = RecursiveCharacterTextSplitter(
chunk_size=chunk_size,
chunk_overlap=chunk_overlap,
add_start_index=True,
separators=["\n\n", "\n", ".", " ", ""],
)
docs_processed = []
for doc in langchain_docs:
docs_processed += text_splitter.split_documents([doc])
## Processing documents to be encoded by Fastembed
docs_contents = []
docs_metadatas = []
for doc in docs_processed:
if hasattr(doc, 'page_content') and hasattr(doc, 'metadata'):
docs_contents.append(doc.page_content)
docs_metadatas.append(doc.metadata)
else:
# Handle the case where attributes are missing
print("Warning: Some documents do not have 'page_content' or 'metadata' attributes.")
print("processed: ", len(docs_processed))
print("content: ", len(docs_contents))
print("metadata: ", len(docs_metadatas))
## Adding documents to Qdrant using desired embedding model
client.set_model(embedding_model_name=embedding_model_name)
client.add(collection_name=collection_name, metadata=docs_metadatas, documents=docs_contents)
```
and retrieving documents from Qdrant during our RAG Pipeline assessment.
```python
def get_documents(collection_name, query, num_documents=3):
"""
This function retrieves the desired number of documents from the Qdrant collection given a query.
It returns a list of the retrieved documents.
"""
search_results = client.query(
collection_name=collection_name,
query_text=query,
limit=num_documents,
)
results = [r.metadata["document"] for r in search_results]
return results
```
### Setting up Quotient
You will need an account log in, which you can get by requesting access on [Quotient's website](https://www.quotientai.co/). Once you have an account, you can create an API key by running the `quotient authenticate` CLI command.
<aside>
💡 Be sure to save your API key, since it will only be displayed once (Note: you will not have to repeat this step again until your API key expires).
</aside>
**Once you have your API key, make sure to set it as an environment variable called `QUOTIENT_API_KEY`**
```python
# Import QuotientAI client and connect to QuotientAI
from quotientai.client import QuotientClient
from quotientai.utils import show_job_progress
# IMPORTANT: be sure to set your API key as an environment variable called QUOTIENT_API_KEY
# You will need this set before running the code below. You may also uncomment the following line and insert your API key:
# os.environ['QUOTIENT_API_KEY'] = "YOUR_API_KEY"
quotient = QuotientClient()
```
**QuotientAI** provides a seamless way to integrate *RAG evaluation* into your applications. Here, we'll see how to use it to evaluate text generated from an LLM, based on retrieved knowledge from the Qdrant vector database.
After retrieving the top similar documents and populating the `context` column, we can submit the evaluation dataset to Quotient and execute an evaluation job. To run a job, all you need is your evaluation dataset and a `recipe`.
***A recipe is a combination of a prompt template and a specified LLM.***
**Quotient** orchestrates the evaluation run and handles version control and asset management throughout the experimentation process.
***Prior to assessing our RAG solution, it's crucial to outline our optimization goals.***
In the context of *question-answering on Qdrant documentation*, our focus extends beyond merely providing helpful responses. Ensuring the absence of any *inaccurate or misleading information* is paramount.
In other words, **we want to minimize hallucinations** in the LLM outputs.
For our evaluation, we will be considering the following metrics, with a focus on **Faithfulness**:
- **Context Relevance**
- **Chunk Relevance**
- **Faithfulness**
- **ROUGE-L**
- **BERT Sentence Similarity**
- **BERTScore**
### Evaluation in action
The function below takes an evaluation dataset as input, which in this case contains questions and their corresponding answers. It retrieves relevant documents based on the questions in the dataset and populates the context field with this information from Qdrant. The prepared dataset is then submitted to QuotientAI for evaluation for the chosen metrics. After the evaluation is complete, the function displays aggregated statistics on the evaluation metrics followed by the summarized evaluation results.
```python
def run_eval(eval_df, collection_name, recipe_id, num_docs=3, path="eval_dataset_qdrant_questions.csv"):
"""
This function evaluates the performance of a complete RAG pipeline on a given evaluation dataset.
Given an evaluation dataset (containing questions and ground truth answers),
this function retrieves relevant documents, populates the context field, and submits the dataset to QuotientAI for evaluation.
Once the evaluation is complete, aggregated statistics on the evaluation metrics are displayed.
The evaluation results are returned as a pandas dataframe.
"""
# Add context to each question by retrieving relevant documents
eval_df['documents'] = eval_df.apply(lambda x: get_documents(collection_name=collection_name,
query=x['input_text'],
num_documents=num_docs), axis=1)
eval_df['context'] = eval_df.apply(lambda x: "\n".join(x['documents']), axis=1)
# Now we'll save the eval_df to a CSV
eval_df.to_csv(path, index=False)
# Upload the eval dataset to QuotientAI
dataset = quotient.create_dataset(
file_path=path,
name="qdrant-questions-eval-v1",
)
# Create a new task for the dataset
task = quotient.create_task(
dataset_id=dataset['id'],
name='qdrant-questions-qa-v1',
task_type='question_answering'
)
# Run a job to evaluate the model
job = quotient.create_job(
task_id=task['id'],
recipe_id=recipe_id,
num_fewshot_examples=0,
limit=500,
metric_ids=[5, 7, 8, 11, 12, 13, 50],
)
# Show the progress of the job
show_job_progress(quotient, job['id'])
# Once the job is complete, we can get our results
data = quotient.get_eval_results(job_id=job['id'])
# Add the results to a pandas dataframe to get statistics on performance
df = pd.json_normalize(data, "results")
df_stats = df[df.columns[df.columns.str.contains("metric|completion_time")]]
df.columns = df.columns.str.replace("metric.", "")
df_stats.columns = df_stats.columns.str.replace("metric.", "")
metrics = {
'completion_time_ms':'Completion Time (ms)',
'chunk_relevance': 'Chunk Relevance',
'selfcheckgpt_nli_relevance':"Context Relevance",
'selfcheckgpt_nli':"Faithfulness",
'rougeL_fmeasure':"ROUGE-L",
'bert_score_f1':"BERTScore",
'bert_sentence_similarity': "BERT Sentence Similarity",
'completion_verbosity':"Completion Verbosity",
'verbosity_ratio':"Verbosity Ratio",}
df = df.rename(columns=metrics)
df_stats = df_stats.rename(columns=metrics)
display(df_stats[metrics.values()].describe())
return df
main_metrics = [
'Context Relevance',
'Chunk Relevance',
'Faithfulness',
'ROUGE-L',
'BERT Sentence Similarity',
'BERTScore',
]
```
## Experimentation
Our approach is rooted in the belief that improvement thrives in an environment of exploration and discovery. By systematically testing and tweaking various components of the RAG pipeline, we aim to incrementally enhance its capabilities and performance.
In the following section, we dive into the details of our experimentation process, outlining the specific experiments conducted and the insights gained.
### Experiment 1 - Baseline
Parameters
- **Embedding Model: `bge-small-en`**
- **Chunk size: `512`**
- **Chunk overlap: `64`**
- **Number of docs retrieved (Retireval Window): `3`**
- **LLM: `Mistral-7B-Instruct`**
We’ll process our documents based on configuration above and ingest them into Qdrant using `add_documents` method introduced earlier
```python
#experiment1 - base config
chunk_size = 512
chunk_overlap = 64
embedding_model_name = "BAAI/bge-small-en"
num_docs = 3
COLLECTION_NAME = f"experiment_{chunk_size}_{chunk_overlap}_{embedding_model_name.split('/')[1]}"
add_documents(client,
collection_name=COLLECTION_NAME,
chunk_size=chunk_size,
chunk_overlap=chunk_overlap,
embedding_model_name=embedding_model_name)
#Outputs
#processed: 4504
#content: 4504
#metadata: 4504
```
Notice the `COLLECTION_NAME` which helps us segregate and identify our collections based on the experiments conducted.
To proceed with the evaluation, let’s create the `evaluation recipe` up next
```python
# Create a recipe for the generator model and prompt template
recipe_mistral = quotient.create_recipe(
model_id=10,
prompt_template_id=1,
name='mistral-7b-instruct-qa-with-rag',
description='Mistral-7b-instruct using a prompt template that includes context.'
)
recipe_mistral
#Outputs recipe JSON with the used prompt template
#'prompt_template': {'id': 1,
# 'name': 'Default Question Answering Template',
# 'variables': '["input_text","context"]',
# 'created_at': '2023-12-21T22:01:54.632367',
# 'template_string': 'Question: {input_text}\\n\\nContext: {context}\\n\\nAnswer:',
# 'owner_profile_id': None}
```
To get a list of your existing recipes, you can simply run:
```python
quotient.list_recipes()
```
Notice the recipe template is a simplest prompt using `Question` from evaluation template `Context` from document chunks retrieved from Qdrant and `Answer` generated by the pipeline.
To kick off the evaluation
```python
# Kick off an evaluation job
experiment_1 = run_eval(eval_df,
collection_name=COLLECTION_NAME,
recipe_id=recipe_mistral['id'],
num_docs=num_docs,
path=f"{COLLECTION_NAME}_{num_docs}_mistral.csv")
```
This may take few minutes (depending on the size of evaluation dataset!)
We can look at the results from our first (baseline) experiment as below :
Notice that we have a pretty **low average Chunk Relevance** and **very large standard deviations for both Chunk Relevance and Context Relevance**.
Let's take a look at some of the lower performing datapoints with **poor Faithfulness**:
```python
with pd.option_context('display.max_colwidth', 0):
display(experiment_1[['content.input_text', 'content.answer','content.documents','Chunk Relevance','Context Relevance','Faithfulness']
].sort_values(by='Faithfulness').head(2))
```
In instances where the retrieved documents are **irrelevant (where both Chunk Relevance and Context Relevance are low)**, the model also shows **tendencies to hallucinate** and **produce poor quality responses**.
The quality of the retrieved text directly impacts the quality of the LLM-generated answer. Therefore, our focus will be on enhancing the RAG setup by **adjusting the chunking parameters**.
### Experiment 2 - Adjusting the chunk parameter
Keeping all other parameters constant, we changed the `chunk size` and `chunk overlap` to see if we can improve our results.
Parameters :
- **Embedding Model : `bge-small-en`**
- **Chunk size: `1024`**
- **Chunk overlap: `128`**
- **Number of docs retrieved (Retireval Window): `3`**
- **LLM: `Mistral-7B-Instruct`**
We will reprocess the data with the updated parameters above:
```python
## for iteration 2 - lets modify chunk configuration
## We will start with creating seperate collection to store vectors
chunk_size = 1024
chunk_overlap = 128
embedding_model_name = "BAAI/bge-small-en"
num_docs = 3
COLLECTION_NAME = f"experiment_{chunk_size}_{chunk_overlap}_{embedding_model_name.split('/')[1]}"
add_documents(client,
collection_name=COLLECTION_NAME,
chunk_size=chunk_size,
chunk_overlap=chunk_overlap,
embedding_model_name=embedding_model_name)
#Outputs
#processed: 2152
#content: 2152
#metadata: 2152
```
Followed by running evaluation :
and **comparing it with the results from Experiment 1:**
We observed slight enhancements in our LLM completion metrics (including BERT Sentence Similarity, BERTScore, ROUGE-L, and Knowledge F1) with the increase in *chunk size*. However, it's noteworthy that there was a significant decrease in *Faithfulness*, which is the primary metric we are aiming to optimize.
Moreover, *Context Relevance* demonstrated an increase, indicating that the RAG pipeline retrieved more relevant information required to address the query. Nonetheless, there was a considerable drop in *Chunk Relevance*, implying that a smaller portion of the retrieved documents contained pertinent information for answering the question.
**The correlation between the rise in Context Relevance and the decline in Chunk Relevance suggests that retrieving more documents using the smaller chunk size might yield improved results.**
### Experiment 3 - Increasing the number of documents retrieved (retrieval window)
This time, we are using the same RAG setup as `Experiment 1`, but increasing the number of retrieved documents from **3** to **5**.
Parameters :
- **Embedding Model : `bge-small-en`**
- **Chunk size: `512`**
- **Chunk overlap: `64`**
- **Number of docs retrieved (Retrieval Window): `5`**
- **LLM: : `Mistral-7B-Instruct`**
We can use the collection from Experiment 1 and run evaluation with modified `num_docs` parameter as :
```python
#collection name from Experiment 1
COLLECTION_NAME = f"experiment_{chunk_size}_{chunk_overlap}_{embedding_model_name.split('/')[1]}"
#running eval for experiment 3
experiment_3 = run_eval(eval_df,
collection_name=COLLECTION_NAME,
recipe_id=recipe_mistral['id'],
num_docs=num_docs,
path=f"{COLLECTION_NAME}_{num_docs}_mistral.csv")
```
Observe the results as below :
Comparing the results with Experiments 1 and 2 :
As anticipated, employing the smaller chunk size while retrieving a larger number of documents resulted in achieving the highest levels of both *Context Relevance* and *Chunk Relevance.* Additionally, it yielded the **best** (albeit marginal) *Faithfulness* score, indicating a *reduced occurrence of inaccuracies or hallucinations*.
Looks like we have achieved a good hold on our chunking parameters but it is worth testing another embedding model to see if we can get better results.
### Experiment 4 - Changing the embedding model
Let us try using **MiniLM** for this experiment
****Parameters :
- **Embedding Model : `MiniLM-L6-v2`**
- **Chunk size: `512`**
- **Chunk overlap: `64`**
- **Number of docs retrieved (Retrieval Window): `5`**
- **LLM: : `Mistral-7B-Instruct`**
We will have to create another collection for this experiment :
```python
#experiment-4
chunk_size=512
chunk_overlap=64
embedding_model_name="sentence-transformers/all-MiniLM-L6-v2"
num_docs=5
COLLECTION_NAME = f"experiment_{chunk_size}_{chunk_overlap}_{embedding_model_name.split('/')[1]}"
add_documents(client,
collection_name=COLLECTION_NAME,
chunk_size=chunk_size,
chunk_overlap=chunk_overlap,
embedding_model_name=embedding_model_name)
#Outputs
#processed: 4504
#content: 4504
#metadata: 4504
```
We will observe our evaluations as :
Comparing these with our previous experiments :
It appears that `bge-small` was more proficient in capturing the semantic nuances of the Qdrant Documentation.
Up to this point, our experimentation has focused solely on the *retrieval aspect* of our RAG pipeline. Now, let's explore altering the *generation aspect* or LLM while retaining the optimal parameters identified in Experiment 3.
### Experiment 5 - Changing the LLM
Parameters :
- **Embedding Model : `bge-small-en`**
- **Chunk size: `512`**
- **Chunk overlap: `64`**
- **Number of docs retrieved (Retrieval Window): `5`**
- **LLM: : `GPT-3.5-turbo`**
For this we can repurpose our collection from Experiment 3 while the evaluations to use a new recipe with **GPT-3.5-turbo** model.
```python
#collection name from Experiment 3
COLLECTION_NAME = f"experiment_{chunk_size}_{chunk_overlap}_{embedding_model_name.split('/')[1]}"
# We have to create a recipe using the same prompt template and GPT-3.5-turbo
recipe_gpt = quotient.create_recipe(
model_id=5,
prompt_template_id=1,
name='gpt3.5-qa-with-rag-recipe-v1',
description='GPT-3.5 using a prompt template that includes context.'
)
recipe_gpt
#Outputs
#{'id': 495,
# 'name': 'gpt3.5-qa-with-rag-recipe-v1',
# 'description': 'GPT-3.5 using a prompt template that includes context.',
# 'model_id': 5,
# 'prompt_template_id': 1,
# 'created_at': '2024-05-03T12:14:58.779585',
# 'owner_profile_id': 34,
# 'system_prompt_id': None,
# 'prompt_template': {'id': 1,
# 'name': 'Default Question Answering Template',
# 'variables': '["input_text","context"]',
# 'created_at': '2023-12-21T22:01:54.632367',
# 'template_string': 'Question: {input_text}\\n\\nContext: {context}\\n\\nAnswer:',
# 'owner_profile_id': None},
# 'model': {'id': 5,
# 'name': 'gpt-3.5-turbo',
# 'endpoint': 'https://api.openai.com/v1/chat/completions',
# 'revision': 'placeholder',
# 'created_at': '2024-02-06T17:01:21.408454',
# 'model_type': 'OpenAI',
# 'description': 'Returns a maximum of 4K output tokens.',
# 'owner_profile_id': None,
# 'external_model_config_id': None,
# 'instruction_template_cls': 'NoneType'}}
```
Running the evaluations as :
```python
experiment_5 = run_eval(eval_df,
collection_name=COLLECTION_NAME,
recipe_id=recipe_gpt['id'],
num_docs=num_docs,
path=f"{COLLECTION_NAME}_{num_docs}_gpt.csv")
```
We observe :
and comparing all the 5 experiments as below :
**GPT-3.5 surpassed Mistral-7B in all metrics**! Notably, Experiment 5 exhibited the **lowest occurrence of hallucination**.
## Conclusions
Let’s take a look at our results from all 5 experiments above
We still have a long way to go in improving the retrieval performance of RAG, as indicated by our generally poor results thus far. It might be beneficial to **explore alternative embedding models** or **different retrieval strategies** to address this issue.
The significant variations in *Context Relevance* suggest that **certain questions may necessitate retrieving more documents than others**. Therefore, investigating a **dynamic retrieval strategy** could be worthwhile.
Furthermore, there's ongoing **exploration required on the generative aspect** of RAG.
Modifying LLMs or prompts can substantially impact the overall quality of responses.
This iterative process demonstrates how, starting from scratch, continual evaluation and adjustments throughout experimentation can lead to the development of an enhanced RAG system.
## Watch this workshop on YouTube
> A workshop version of this article is [available on YouTube](https://www.youtube.com/watch?v=3MEMPZR1aZA). Follow along using our [GitHub notebook](https://github.com/qdrant/qdrant-rag-eval/tree/master/workshop-rag-eval-qdrant-quotient).
<iframe width="560" height="315" src="https://www.youtube.com/embed/3MEMPZR1aZA?si=n38oTBMtH3LNCTzd" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" referrerpolicy="strict-origin-when-cross-origin" allowfullscreen></iframe> | atita_arora |
1,910,187 | Understanding SEO: Why It Matters and How to Use It | As developers, we often find ourselves lost in the intricacies of code, focusing on functionality and... | 0 | 2024-07-03T13:18:00 | https://dev.to/best_codes/understanding-seo-why-it-matters-and-how-to-use-it-45pe | webdev, beginners, tutorial, website | As developers, we often find ourselves lost in the intricacies of code, focusing on functionality and design. However, there's another crucial aspect of web development that we sometimes overlook: Search Engine Optimization (SEO). In this post, we'll explore why SEO is essential for developers and how we can incorporate it into our workflow.
SEO isn't just about keywords and meta tags; it's about creating a better, more accessible web. At its core, SEO aims to make our websites more discoverable and user-friendly. When we optimize for search engines, we're really optimizing for users.
One of the fundamental aspects of SEO is content quality. Search engines prioritize sites that provide valuable, relevant information to users. As developers, we need to work closely with content creators to ensure that our sites not only function well but also deliver meaningful content structured in a way that both users and search engines can easily understand.
Site performance is another critical factor. Search engines favor fast-loading sites, which aligns perfectly with our goals as developers. By optimizing our code, minimizing HTTP requests, leveraging browser caching, and efficiently handling assets like images, we're not just improving SEO – we're creating a better user experience.
Mobile-friendliness has become increasingly important with Google's move to mobile-first indexing. This means that responsive design isn't just a nice-to-have; it's essential for SEO. As developers, we need to ensure our sites perform well across all devices.
Security is another aspect where SEO and good development practices intersect. Implementing HTTPS not only protects user data but also gives a slight boost in search rankings. It's a win-win situation that aligns with our responsibility to create secure web applications.
Semantic HTML and structured data (like Schema.org markup) play a crucial role in helping search engines understand our content. By using appropriate HTML5 elements and implementing structured data, we're essentially speaking the language of search engines, helping them to better interpret and display our content in search results.
While some aspects of SEO, like link building, may seem outside a developer's purview, understanding these concepts can help us create sites that are more likely to attract quality backlinks. By focusing on performance, accessibility, and user experience, we're laying the groundwork for a site that others will want to link to.
Incorporating SEO into our development process doesn't have to be overwhelming. Start by focusing on the basics: clean, semantic code, fast load times, mobile responsiveness, and secure connections. As you become more comfortable with these concepts, you can dive deeper into more advanced SEO techniques.
Remember, SEO is an ongoing process, not a one-time task. Stay curious, keep learning, and don't be afraid to ask for help. By embracing SEO, we can create websites that not only function beautifully but also reach and serve our intended audience effectively.
What are your thoughts on SEO as a developer? Have you found ways to incorporate SEO best practices into your development workflow? Share your experiences and let's learn from each other!
For more info, check out https://developers.google.com/search/docs/fundamentals/seo-starter-guide. | best_codes |
1,910,186 | 5-Step Guide to Mobile App Testing Automation | The global mobile app market has been growing at more than 11.5% per year and is now worth more than... | 0 | 2024-07-03T13:17:24 | https://dev.to/morrismoses149/5-step-guide-to-mobile-app-testing-automation-199g | mobileapp, testing, automation, testgrid | The global mobile app market has been growing at more than 11.5% per year and is now worth more than $154.06 billion after the COVID-19 shift toward remote work has increased and time spent online has gone up.
With over 10.97 billion mobile connections worldwide, the demand for sophisticated, high-performance B2B and B2C mobile apps is increasing.
The main reason for app abandonment is poor user experience. This includes a perplexing UI/UX and an excessive number of bugs. Loading times are slow.
Continuous testing for mobile applications is required to ensure that a mobile app functions properly on both iOS and Android. In addition, mobile app testing can be difficult, involving numerous platforms, operating systems, and network connections.
This post will walk you through the entire mobile app testing process step by step. Our experience in this field will assist you in avoiding traps and pitfalls.
Testing is essential for developing a dependable product.
Testing is an essential component of the lifecycle of a mobile application. However, due to the time and effort required to complete the entire cycle of app testing, it is frequently overlooked by developers.
A product should be tested at each stage to ensure that it is reliable and enjoyable to use.
In essence, mobile application testing is similar to website testing.
In this post, we’ll go over all stages of application testing and explain how to test mobile apps.
## Step-By-Step Guide to Mobile App Testing Automation
### Step 1. Setup Mobile App Automation Testing Goals
Software testing is a crucial step in the development process to ensure that an app will function as intended and be resilient to unforeseen circumstances.
**How can mobile apps be tested?**
The way you develop is similar to how you test mobile applications.
To ensure that your applications function properly, you should perform testing frequently during development and maintenance.
As you climb the pyramid, the end user is closer to you. User feedback is a form of testing. The closer you are to the user, the harder it is to automate your testing.
### Step 2: Plan Test Cases
The test cases you will use as your project develops are described in the [Agile testing](https://testgrid.io/blog/agile-test-automation/) matrix/testing quadrants. It’s critical to remember that testing is not a sequential procedure or a step in the product development process. Instead, it’s a crucial component of each Agile sprint.
The crucial test case is:
- Repeated often or is repetitive
- Involves time-consuming data entry
- Subject to human error
- Low risk
Automation is not a good fit for a test case that relies on subjective feedback (such as UI/UX) or involves many steps. Additionally, writing automation code for a test that will only be run once is not worthwhile. You want automation to be helpful because it takes time.
The most typical mobile app testing scenarios that can be automated include unit tests, functional tests, and integration tests.
### Step 3: Choose A Test Automation Framework
After determining which test cases you want to automate, you must select the appropriate automation framework. This integrated system establishes automated procedures for your test.
Let’s examine the top six mobile app testing automation frameworks.
Frameworks for Mobile Automation.
#### 01 Linear Automation Framework
The “record-and-playback model” is another name for this framework, which is very linear and incremental. It’s perfect for straightforward programs or unit tests.
#### 02. Modular-Based Testing Framework
We use a modular testing framework to create scenarios. Greater testing scenarios can be created by combining modules. More significant test scenarios can be created by combining modules.
#### 03 Testing Library Architecture Framework
The modular test framework and this framework are very similar. However, we divide common tasks into functional groups rather than using modules.
After that, functions are kept in a library. Therefore, it is possible to reference this library when writing test cases, simplifying the process.
#### 04 Data-Driven Frameworks
Data-driven frameworks acknowledge that even though the test may stay the same, the data may change. This framework retrieves data from an external system when testing a functionality like a login.
#### 05 A Framework Driven By Keywords
Table-driven is an alternative name for this framework. It enables the development of table-driven frameworks by coupling external test data with actions kept in a table, like Excel.
However, these frameworks can be time-consuming, even though various test scripts can access the exact keywords.
#### 06 A Hybrid Testing Framework
Two or more of these frameworks are referred to as hybrid frameworks. Teams can then design the ideal test environment, thanks to this.
## Step 4: Select the Right Automation Testing Tool
You can write test scripts using one or more of the tests mentioned above in automation frameworks with the aid of mobile automation testing tools.
A basic understanding of the frameworks can help ensure you get the right tool for the job at hand, even though it is not necessary to thoroughly comprehend them to select the best mobile testing tool.
Mobile Application Testing Checklist.
When choosing a mobile app testing tool, you may want to take into account the following factors:
- OS support
- Type of tests supported (unit tests, regression tests, functional tests, etc.)
- Ease of use, including script-less test creation, clear and in detail reporting
- Integration with existing CI/CD tools
- Cost and scalability
## Step 5: Virtual Devices vs. Real Devices
The hardware and the operating system (OS) will be subject to thorough mobile app testing (device). However, testing mobile devices is logistically impossible due to the wide range of mobile device types and configurations.
Even for Apple, there are 14 generations of devices, with multiple models for each generation, so it may be nice to test on actual devices.
Best practices advise testing on at least one of each target device (most recent iOS device, top Android phone, etc.) to be realistic, with the remaining testing being done on virtual devices (known as simulators or emulators).
With a slight loss in accuracy, virtual devices can mimic many features of actual devices more quickly and cheaply.
## Conclusion
The entire application life cycle must include testing for mobile applications. Successful testing guarantees that the system will operate effectively and satisfactorily and that security regulations will be followed.
You need to look no further than TestGrid if you want to test a mobile application. We have tested hundreds of software projects in various industries, so we are constantly aware of the most recent developments and best practices. Browse our services to find the one that best suits your needs.
Source : This blog is originally published at [TestGrid](https://testgrid.io/blog/guide-to-mobile-app-testing-automation/)
| morrismoses149 |
1,910,185 | .Net | .Netga xush kelibsiz. Siz buni ishlab chiqish uchun C#, F#, Visual Basic tillaridan foydalanish... | 0 | 2024-07-03T13:16:32 | https://dev.to/jurabek777/net-14oe | .Netga xush kelibsiz. Siz buni ishlab chiqish uchun C#, F#, Visual Basic tillaridan foydalanish mumkin.
.NET Framework — bu kodning bajarilishini boshqaruvchi Common Language Runtime (CLR) va ilovalarni yaratish uchun sinflarning boy kutubxonasini ta’minlovchi Base Class Library (BCL) larni o’z ichiga olgan ishlab chiqish platformasi. .Net bu Windowsda ishlaydi.
C# --> tarixi C# kelib chiqishi 2000 yilga borib taqaladi. C# Javascript bilan asosiy raqobatchi hisoblanadi.
C# ning juda ko’p versiyalari mavjud, ularning barchasi dasturiy ta’minotga yanada ko’proq yangilanishlar kiritdi.
CLR .NET ning asosiy qismidir. Bu codlarni boshqaradigan va turli xizmatlarni taqdim etish orqali ishlab chiqish jarayonini osonlashtirishga yordam beradi. | jurabek777 | |
1,910,183 | Implementing Email and Mobile OTP Verification in Django: A Comprehensive Guide | In today's digital landscape, ensuring the authenticity of user accounts is paramount for web... | 0 | 2024-07-03T13:13:53 | https://dev.to/rupesh_mishra/implementing-email-and-mobile-otp-verification-in-django-a-comprehensive-guide-4oo0 |
In today's digital landscape, ensuring the authenticity of user accounts is paramount for web applications. One effective method to achieve this is through email and mobile number verification using One-Time Passwords (OTPs). This article will guide you through the process of implementing OTP verification in a Django project, explaining its importance and providing actionable steps for implementation.
## Table of Contents
1. [Introduction](#introduction)
2. [Why OTP Verification Matters](#why-otp-verification-matters)
3. [Prerequisites](#prerequisites)
4. [Step-by-Step Implementation](#step-by-step-implementation)
5. [Best Practices and Considerations](#best-practices-and-considerations)
6. [Conclusion](#conclusion)
## Introduction
One-Time Passwords (OTPs) are unique, temporary codes used to verify a user's identity. By implementing OTP verification for both email and mobile numbers, you add an extra layer of security to your application, ensuring that users have access to the contact methods they've provided.
## Why OTP Verification Matters
1. **Enhanced Security**: OTP verification significantly reduces the risk of unauthorized access and account takeovers.
2. **User Authentication**: It confirms that users have provided valid contact information, which is crucial for account recovery and communication.
3. **Fraud Prevention**: It helps prevent the creation of fake accounts, as users must prove ownership of their email and phone number.
4. **Compliance**: Many regulatory standards require multi-factor authentication, which OTP verification can help satisfy.
5. **User Trust**: Implementing strong security measures like OTP verification builds user confidence in your application.
## Prerequisites
Before we begin, make sure you have the following:
- Python 3.x installed
- Basic knowledge of Django
- A Django project set up (if not, we'll cover that in the steps)
## Step-by-Step Implementation
Let's dive into the process of implementing OTP verification in a Django project.
### Step 1: Set up the Django project and app
First, let's create a new Django project and app:
```bash
django-admin startproject otp_verification
cd otp_verification
python manage.py startapp user_auth
```
Add 'user_auth' to INSTALLED_APPS in your project's settings.py file:
```python
INSTALLED_APPS = [
...
'user_auth',
]
```
### Step 2: Install required packages
We'll need a couple of additional packages:
```bash
pip install django-otp pyotp
```
### Step 3: Create the User model
In your `user_auth/models.py` file, create a custom user model:
```python
from django.contrib.auth.models import AbstractUser
from django.db import models
class CustomUser(AbstractUser):
email = models.EmailField(unique=True)
mobile_number = models.CharField(max_length=15, unique=True)
is_email_verified = models.BooleanField(default=False)
is_mobile_verified = models.BooleanField(default=False)
email_otp = models.CharField(max_length=6, null=True, blank=True)
mobile_otp = models.CharField(max_length=6, null=True, blank=True)
```
### Step 4: Create OTP generation and verification functions
Create a new file `user_auth/utils.py`:
```python
import pyotp
from datetime import datetime, timedelta
def generate_otp():
totp = pyotp.TOTP(pyotp.random_base32(), interval=300) # 5 minutes validity
return totp.now()
def verify_otp(otp, user_otp):
return otp == user_otp
```
### Step 5: Create views for registration and OTP verification
In your `user_auth/views.py` file:
```python
from django.shortcuts import render, redirect
from django.contrib.auth import login
from .models import CustomUser
from .utils import generate_otp, verify_otp
from django.core.mail import send_mail
from django.conf import settings
def register(request):
if request.method == 'POST':
username = request.POST['username']
email = request.POST['email']
mobile_number = request.POST['mobile_number']
password = request.POST['password']
user = CustomUser.objects.create_user(username=username, email=email,
mobile_number=mobile_number, password=password)
# Generate and save OTPs
email_otp = generate_otp()
mobile_otp = generate_otp()
user.email_otp = email_otp
user.mobile_otp = mobile_otp
user.save()
# Send email OTP
send_mail(
'Email Verification OTP',
f'Your OTP for email verification is: {email_otp}',
settings.EMAIL_HOST_USER,
[email],
fail_silently=False,
)
# Send mobile OTP (you'll need to integrate with an SMS service)
# For this example, we'll just print it
print(f"Mobile OTP: {mobile_otp}")
return redirect('verify_otp', user_id=user.id)
return render(request, 'register.html')
def verify_otp(request, user_id):
user = CustomUser.objects.get(id=user_id)
if request.method == 'POST':
email_otp = request.POST['email_otp']
mobile_otp = request.POST['mobile_otp']
if verify_otp(email_otp, user.email_otp) and verify_otp(mobile_otp, user.mobile_otp):
user.is_email_verified = True
user.is_mobile_verified = True
user.email_otp = None
user.mobile_otp = None
user.save()
login(request, user)
return redirect('home')
else:
return render(request, 'verify_otp.html', {'error': 'Invalid OTP'})
return render(request, 'verify_otp.html')
```
### Step 6: Create URL patterns
In your `user_auth/urls.py` file:
```python
from django.urls import path
from . import views
urlpatterns = [
path('register/', views.register, name='register'),
path('verify_otp/<int:user_id>/', views.verify_otp, name='verify_otp'),
]
```
Don't forget to include these URLs in your project's main `urls.py` file.
### Step 7: Create templates
Create two HTML templates in your `templates` directory:
`register.html`:
```html
<form method="post">
{% csrf_token %}
<input type="text" name="username" placeholder="Username" required>
<input type="email" name="email" placeholder="Email" required>
<input type="text" name="mobile_number" placeholder="Mobile Number" required>
<input type="password" name="password" placeholder="Password" required>
<button type="submit">Register</button>
</form>
```
`verify_otp.html`:
```html
<form method="post">
{% csrf_token %}
<input type="text" name="email_otp" placeholder="Email OTP" required>
<input type="text" name="mobile_otp" placeholder="Mobile OTP" required>
<button type="submit">Verify OTP</button>
</form>
```
### Step 8: Configure email settings
In your project's `settings.py` file, add the following email configuration:
```python
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.gmail.com' # Use your email provider's SMTP server
EMAIL_PORT = 587
EMAIL_USE_TLS = True
EMAIL_HOST_USER = 'your_email@gmail.com'
EMAIL_HOST_PASSWORD = 'your_email_password'
```
Replace the placeholder values with your actual email credentials.
### Step 9: Run migrations
Apply the database migrations:
```bash
python manage.py makemigrations
python manage.py migrate
```
### Step 10: Run the server
Start the Django development server:
```bash
python manage.py runserver
```
## Best Practices and Considerations
1. **Security**: In a production environment, use more secure methods for storing OTPs, such as hashing them before saving to the database.
2. **SMS Integration**: Integrate with a reliable SMS service provider to send mobile OTPs.
3. **OTP Expiry**: Implement a mechanism to expire OTPs after a certain time period.
4. **Rate Limiting**: Implement rate limiting to prevent abuse of the OTP generation and verification endpoints.
5. **Error Handling**: Add robust error handling and user feedback for a smoother user experience.
6. **Resend OTP**: Provide an option for users to request a new OTP if they don't receive the first one.
7. **Progressive Enhancement**: Allow users to access limited functionality even if they haven't verified their contact methods, but require verification for sensitive actions.
## Conclusion
Implementing email and mobile OTP verification in your Django application significantly enhances security and user trust. By following this guide, you've learned how to set up a basic OTP verification system. Remember to adapt this implementation to your specific needs and always prioritize user data security.
As you continue to develop your application, consider integrating additional security measures and regularly updating your authentication methods to stay ahead of potential threats. With OTP verification in place, you're taking a crucial step towards building a more secure and trustworthy web application.
Connect with me on my social media platforms for more updates and insights:
- **Twitter**: [@rupeshmisra2002](https://twitter.com/rupeshmisra2002)
- **LinkedIn**: [Rupesh Mishra](https://www.linkedin.com/in/rupeshmishra2002)
- **GitHub**: [Rupesh Mishra](https://github.com/solvibrain) | rupesh_mishra | |
1,910,182 | . | .NET основана на .NET Framework. Платформа .NET отличается от неё модульностью,... | 0 | 2024-07-03T13:08:43 | https://dev.to/asadbekit/-57b1 | .NET основана на .NET Framework. Платформа .NET отличается от неё модульностью, кроссплатформенностью, возможностью применения облачных технологий, и тем, что в ней произошло разделение между библиотекой CoreFX и средой выполнения CoreCLR[6].
.NET — модульная платформа. Каждый её компонент обновляется через менеджер пакетов NuGet, а значит можно обновлять её модули по отдельности, в то время как .NET Framework обновляется целиком. Каждое приложение может работать с разными модулями и не зависит от единого обновления платформы[21].
CoreFX — это библиотека, интегрированная в .NET. Среди её компонентов: System.Collections, System.IO, System.Xml[22].
CoreCLR — это среда выполнения, включающая в себя RyuJIT (JIT-компилятор), встроенный сборщик мусора и другие компоненты[23]. | asadbekit | |
1,910,181 | . | .NET основана на .NET Framework. Платформа .NET отличается от неё модульностью,... | 0 | 2024-07-03T13:08:41 | https://dev.to/asadbekit/-2n9g | .NET основана на .NET Framework. Платформа .NET отличается от неё модульностью, кроссплатформенностью, возможностью применения облачных технологий, и тем, что в ней произошло разделение между библиотекой CoreFX и средой выполнения CoreCLR[6].
.NET — модульная платформа. Каждый её компонент обновляется через менеджер пакетов NuGet, а значит можно обновлять её модули по отдельности, в то время как .NET Framework обновляется целиком. Каждое приложение может работать с разными модулями и не зависит от единого обновления платформы[21].
CoreFX — это библиотека, интегрированная в .NET. Среди её компонентов: System.Collections, System.IO, System.Xml[22].
CoreCLR — это среда выполнения, включающая в себя RyuJIT (JIT-компилятор), встроенный сборщик мусора и другие компоненты[23]. | asadbekit | |
1,910,179 | Bug Report For SAW | Click to view the bug report Exploratory Test Report for Scrapeanywebsite Desktop... | 0 | 2024-07-03T13:08:05 | https://dev.to/godsgift_uloamaka_72c38ef/bug-report-for-saw-4h6l | programming, testing, design | [Click to view the bug report ](https://eu.docworkspace.com/d/sIO-_2OKHAYjslLQG)
## Exploratory Test Report for Scrapeanywebsite Desktop application
[Scrape Any Website](https://scrapeanyweb.site/)
Date: July 3, 2024
**Objective:** The objective of this test is to explore the functionalities, usability issues and bug within SAW-ScrapeanyWebsite
**Tested Environment:**
- Browser: Chrome 91.0.4472.124
- Operating System: Windows 11
- Device: Laptop
For this exploration, I utilized [Scrape Any Website](https://apps.microsoft.com/detail/9mzxn37vw0s2?hl=en-us&gl=NG), a popular SAW application. Starting with the happy paths, I tested core functionalities like URL extraction, data filtering, and export options. The application successfully extracted data from various websites, allowing me to customize scraping parameters and export results in different formats.
## Test Case:
**Functionality Test:**
The application crashes when attemping to scrape without providing any input for the URL, and then clicking on save.
**Limited Error Handling:**
When encountering unexpected website structures or invalid URLs, the application sometimes crashed abruptly without informative error messages. This left me troubleshooting in the dark. Also error of 3xx and 5xx where not taken into consideration a the desktop app, causing a difference in the scrape count to the error code recorded in the scrape statistics sections.
**Usability Issue:**
The user interface encounters some frustrating glitches when minimizing and maximizing the application. After minimizing and then maximizing, the log content section doesn't fully return to view. Additionally, when switching to dark mode, the text color remains unchanged, failing to invert with the rest of the UI. This makes it difficult to see if the text box is even accepting user input.
**Recommendations for a Smoother SAW Experience**
The application should strive to avoid crashing abruptly when encountering unexpected website structures or invalid URLs. Instead, it should implement robust error handling routines that:
1. Identify the issue:
Log or display a clear error message pinpointing the specific problem encountered (e.g., "Invalid URL format" or "Unexpected website structure").
2. Offer recovery options:
Whenever possible, provide the user with options to recover from the error. This might involve allowing them to correct the URL, adjust scraping parameters, or skip the problematic website altogether.
3. Provide user guidance:
Include suggestions for troubleshooting common errors within the error message itself, empowering users to resolve issues independently.
4. Dynamic Theme Adaptation:
Integrate functionality to dynamically adjust the text color based on the chosen theme (light or dark mode). When dark mode is enabled, the text color should invert to ensure proper contrast with the background. This will improve readability and make it clear whether the text box is accepting user input.
5. Visual Cues for User Input:
Consider adding visual cues to the text box to indicate its active state, especially when dark mode reduces text contrast. This could include a subtle change in the text box border or a faint cursor indicator to provide better user feedback.
---
Despite the identified issues, [Scrape Any Website](https://apps.microsoft.com/detail/9mzxn37vw0s2?hl=en-us&gl=NG) offers a valuable tool for web data extraction. With the suggested improvements, SAW applications like Scrape Any Website can become even more user-friendly and powerful for anyone looking to leverage website data efficiently. It's also worth noting that SAW applications come in various forms, so if Scrape Any Website doesn't suit your specific needs, exploring the Windows Store [Link to Windows Store download page] might reveal alternative options that cater to your scraping requirements.
Interested to view bug report for SAW?
[Click to view the bug report ](https://eu.docworkspace.com/d/sIO-_2OKHAYjslLQG)
| godsgift_uloamaka_72c38ef |
1,910,178 | Okay! Next.js 🤯 is not that bad. | I have a love-hate relationship with JavaScript! Having worked with it for more than 10 years... | 0 | 2024-07-03T13:04:17 | https://dev.to/kwnaidoo/okay-nextjs-is-not-that-bad-1e37 | watercooler, productivity, webdev, nextjs | I have a love-hate relationship with JavaScript! Having worked with it for more than 10 years building sliders, jQuery UIs, and React SPAs, I know its warts and imperfections fairly well, but alas compared to its lesser-known competitor VBScript, I'll take JS thank you!
Fast forward to 2024, you can't get very far without deep diving into React for all the UI fanciness that modern apps demand. My favorite web frameworks are Echo (Golang), Laravel(PHP), and Django (Python) but just sometimes, it's better to do everything in one stack.
## Typescript is weird 🤷
I am all too familiar with strongly typed languages like Go and C#, but TypeScript just feels more verbose and "dirty". I am Minimalist at heart - so that's probably why.
Anyway, after throwing up a bit 🤮 I got over the weirdness and am fairly comfortable with it now. Not my favorite language ever, but it's okay I guess.
## Next.js is lean and clean
One of my major problems with Laravel; don't get me wrong, it's a beautiful and powerful framework, but there's just too much stuff! Controllers, routes, views, livewire, and the list goes on and on...
Next.js favors convention over configuration; the skeleton template comes with just a handful of folders/files and a big bonus: you get React baked in.
The routing is a breeze, maybe I'm too lazy 🙄 but setting up a Controller, then a view, and then a route in Laravel is tedious.
In Next.js, you just create a folder with "page.tsx" file, and Tada! you have a working route at "/something".
The same applies to API routes. Simple directory-based routing, it's like PHP from back in the day.
I like the MVC structure but heavy UI apps with React will then require a hundred API endpoints and "Axios" or "fetch", plus authentication and all that Jazz! I ain't got time for that!
Furthermore, since you writing your views in React and Typescript, you can easily share code between the frontend and backend with ease.
## Next.js is innovative for startups
Server-side components are like the old Microsoft Web Pages concept re-invented with a touch of class!
Having this close binding with the frontend makes me so much more productive. I am an innovator and spend a large percentage of my time researching and building MVPs.
Scaling and unit testing, all the enterprise stuff at this stage is not essential, the goal is to build a proof of concept or find product market fit usually, thus server-side components make the most sense for frontend rich SaaS-type apps.
## I would stick with Golang or Laravel for bigger projects
While Next.js is cool and makes building frontend-rich apps much easier, large commercial-type apps with lots of backend heavy lifting probably are not a good fit.
Laravel's biggest weakness is also its biggest strength, for bigger enterprise-type applications, you basically can find all the packages and tools in one place optimized and maintained by the Laravel core team.
In Next.js you often have to rely on 3rd party packages for nearly everything. Even something as simple as a CRON job is not natively baked into the framework 😱 | kwnaidoo |
1,910,177 | Coaxial Cable Shielding: Protecting Against Electromagnetic Interference | Are you dying to watch your favourite TV serial but the fuzzy signals and somewhat uncertain... | 0 | 2024-07-03T13:04:07 | https://dev.to/guadalupe_porters_c7ccb16/coaxial-cable-shielding-protecting-against-electromagnetic-interference-25fg | design | Are you dying to watch your favourite TV serial but the fuzzy signals and somewhat uncertain disconnections are breaking the fun!(: You are not the only one who had to deal with this annoying problem! Electromagnetic interference (EMI) is what causes these interruptions. Coaxial cable shielding saviors the day and makes sure your that transmissions keep rolling, smooth and unobstructed.
Shielding on a Coax Cable Explained
The shielding of a coaxial cable is essentially an extra layer, usually made to protect the wires in your cables using material that can conduct electricity; examples being copper. The function of this shield is to murder all wrapping electromagnetic interference that may have disrupted the copper solid wire quality of your signal. At the same time, it limits that signal to inside the cable, where you want it in order to get from A-to-B as rapidly and efficiently as possible.
Benefits of Coaxial Cable Shieldings
Perhaps the most notable aspect of coaxial cable shielding is its capacity to deflect EMI, which in turn lets your signal shine through loud and clear. EMI can enter into your home through motors, or transformers but if proper shielding is done it will be blocked. In addition, the coaxial cable shielding is widely recognized for its great quality and almost zero signal loss capability creating a premium transmission line suitable not only for TV but also with internet applications.
Revoltionary Coaxial Cable Shielding Technology
As technology advances, so does the realm of coaxial cable shielding. There have been innovations, like adding layers of shielding or using new materials such as aluminum and steel to help shield against EMI. Moreover, methods such as braided shielding have been a very effective method to minimize the EMI up to substantial level. These advancements have gone a long way in providing the users with connection robustness and seamless connectivity exposure over coaxial cables, without any attenuation of signals.
Safety precautions to consider
Though coaxial cable shielding is generally safe for use, it still highly important to ensure safety during installation. Despite the cables being shielded, you should treat them carefully since they are capable of carrying electrical currents. But dont forget to wear a rubber glove and keep distance from an electric source when you are setting up the cables.
Shielding in Coaxial Cable for Proper Usage
The first step in getting proper use out of the shielding, is understanding what type of connection your setup calls for. For homes that are coaxial-enabled, connecting the cables is a cinch -- just plug in your rg58 coax cable device with an outlet connection and you're good to stream. If you have an older home without coaxial wiring installed already, you may need a very short run of coax using our female-to-female adapter. The adapter can then be connected to the un used output of your device and by linking one end odof cable into both the adapters ahd wall socket.
How Shielded Coax Cables Improve Service Quality
Using Coaxial Cable shielding always helps you in getting better services. In addition to other technical advantages, such as less signal interference and cross-talk between cables in your home - an attribute thanks mainly to its shielding system that makes it harder for them to detach from their jacks when inserted into the device you are hooking up with (although whether this truly saves hassle or not is debatable) so they stay connected more firmly than most thus yielding fewer interruptions during use time &, hopefully allowing only high quality transmission all throughout without any dropouts whatsoever! In addition, the high-quality coaxial cables have a long lifespan and thus last for several years in proper condition you do not face any problems.
Coaxial Cable Shielding Varieties
While wireless internet is prevalent in our world, maintaining a solid signal from your television and laptop relies on coaxial cable shielding. In addition, in big residential and commercial buildings where signal coverage might be a problem to processional coaxial cable shielding offers significant help providing strong stable functioning signals without any interruptions.
To Conclude
To sum up, it can be said that the shielding of coaxial cable presents itself as a required factor for all those who choose with cables. It does not only improve the reliability of connection but helps in reducing any external interfacing that may affect your screen time. This way, with safe installation and the right quality rg58 cable you can enjoy a reliable connection without EMI related annoyances. | guadalupe_porters_c7ccb16 |
1,910,175 | Wednesday Links - Edition 2024-07-03 | Choosing the Right JDK Version: An Unofficial Guide (7... | 6,965 | 2024-07-03T13:00:43 | https://dev.to/0xkkocel/wednesday-links-edition-2024-07-03-20ch | java, jvm, testcointainers, uuid | Choosing the Right JDK Version: An Unofficial Guide (7 min)🪃
https://blogs.oracle.com/java/post/choosing-the-right-jdk-version
Wait you can place Java annotations there? (3 min)🐒
https://mostlynerdless.de/blog/2024/06/28/wait-you-can-place-java-annotations-there/
Reducing Testcontainers Execution Time with JUnit 5 Callbacks (8 min)🤙
https://rieckpil.de/reducing-testcontainers-execution-time-with-junit-5-callbacks/
TIL: 8 versions of UUID and when to use them (2 min)🆔
https://ntietz.com/blog/til-uses-for-the-different-uuid-versions | 0xkkocel |
1,910,174 | Personal Front End Journey | welcome folks 😀, I decided it was long overdue for me to learn some front end skills. Being educated... | 0 | 2024-07-03T12:59:19 | https://dev.to/marcos_/personal-front-end-journey-4h56 | webdev, beginners | welcome folks 😀,
I decided it was long overdue for me to learn some front end skills. Being educated in computer engineering I learned many things about opperating systems, compilers, and computer architecture.
However surprisingly little about webdev. For the next few weeks I intend to self teach some of the basics of webdev (particularly frontend).
This year is the year to confidently say "Yes I can build you a website" | marcos_ |
1,910,155 | The HNG11 Internship program can significantly help me achieve my goals in several ways: | https://hng.tech/ Professional Objectives: Design Leadership: HNG's team-based projects and... | 0 | 2024-07-03T12:54:55 | https://dev.to/jeremiah_leke_e65e49d6a2f/the-hng11-internship-program-can-significantly-help-me-achieve-my-goals-in-several-ways-4jf9 | webdev, beginners, javascript, programming | https://hng.tech/
Professional Objectives:
1. _Design Leadership_: HNG's team-based projects and collaborations can help me develop leadership skills and experience.
2. _Expertise Expansion_: HNG's diverse projects and mentorship can expose me to emerging design technologies and best practices.
3. _Cross-Functional Collaboration_: HNG's interdisciplinary teams and feedback sessions can enhance my collaboration skills with developers, product managers, and other stakeholders.
4. _Design Innovation_: HNG's project challenges and hackathons can provide opportunities for innovative design thinking and problem-solving.
5. _Design System Development_: HNG's emphasis on design systems and consistency can help me develop skills in creating and maintaining design systems.
https://hng.tech/internship
Personal Objectives:
1. _Continuous Learning_: HNG's mentorship, workshops, and feedback sessions can support my continuous learning and skill development.
2. _Mentorship_: HNG's experienced mentors can provide guidance and support, helping me achieve my goals.
3. _Personal Projects_: HNG's flexible project structure can allow me to work on personal projects and receive feedback from peers and mentors.
4. _Networking_: HNG's community of designers, developers, and product managers can expand my professional network and connections.
5. _Wellness and Balance_: HNG's emphasis on work-life balance and self-care can help me prioritize your well-being and maintain a healthy lifestyle.
By actively participating in the HNG Internship program, I believe i can leverage these opportunities to achieve my goals and accelerate my growth as a designer.
https://hng.tech/internship
https://www.figma.com/design/r5mkepkQ6pXO2KneD6h6fs/lee-design-tutorial?m=auto&t=hdjNqgDqvFcIi4oc-6 | jeremiah_leke_e65e49d6a2f |
1,910,173 | Harnessing Durability: The Role of Chopped Strand Mat in Reinforced Plastics | Durability begins to take the stage: Chopped Strand Mat in reinforced plastics You may have read... | 0 | 2024-07-03T12:52:08 | https://dev.to/guadalupe_porters_c7ccb16/harnessing-durability-the-role-of-chopped-strand-mat-in-reinforced-plastics-4f3p | design | Durability begins to take the stage: Chopped Strand Mat in reinforced plastics
You may have read about reinforced plastics, if you are familiar with different kinds of plastic. These are essentially the plastics we use in our everyday lives but a bit better - they are actually sterner and more resistant. Chopped strand mat is one of the main elements that help deliver this increased muscle.
Features of Chopped Strand Mat
Here are a few things you may or may not know about chopped strand mat going into this. Glass fibers made item, essential during plastic reinforcement Resins, a form of plastic usually accompany glass fiber to produce reinforced plastics. Here are the great and notable benefits of a chopped strand mat;
With the application of advanced polymers, it is a cost-effective option to strengthen which makes silk woven mesh an obvious choice across many sectors.
The flexibility of the substance allows it to be easily molded into different shapes, furthering its usefulness.
This material is used for various applications ranging from making automobile components to boat hulls.
Advanced Reinforced Plastics in Innovation
Although chopped strand mat is not a new concept, ongoing developments have expanded the capabilities of reinforced plastics. Modern cast chopped strand mats comply with new levels of strength and safety that have been certified.
One of the key advancements is in cutting glass fibres with computer-controlled machinery at an extremely high level of precision. This provides great precision while making it perfect for creating a 3k twill carbon fiber design tailored to your needs.
There is also a very innovative application of coatings to improve the bond between chopped / strand mat and resin. The integration to a near-total extent makes for the ultimate strength and longevity in an end-product.
Safety Considerations
When using chopped strand mat, it is important to observe safety protocol diligently
Glass fibers contained in the chopped strand mat are an inhalation hazard. Therefore, workers must protect themselves while dealing with insulation.
Keeping the material in dry, clean conditions away from heat and flame sources is necessary to avoid its spoilage and pollution.
How to Use Chopped Strand Mat
We will discuss a step by step procedure of chopped strand mat in the production of reinforced plastics
First off, cut the chopped strand mat to desired shape and size.
Layer your tin or surface nicely.
Paint with resin and let the paint dry completely.
Ensuring that there are no wrinkles or air pockets will not on provide a great and even layout, but strength at the seams. In addition, the choice of resin will also play a key role in effecting the properties of this final 3k twill weave carbon fiber product.
Service and Quality
However, pad printing can be a complex method to master so it is important that by partnering with reputable supplier for this decoration technique.
Look for a supplier with an extensive selection of chopped strand mat choices so that more applications can be accounted for.
Choose a provider that will offer world class guidance and products of phenomenal standard.
Reinforced Plastics Applications
From industrial through commercial to residential reinforced plastics can be found in all sectors. Used in constructing everything from auto parts to the structure of a boat, roofing for commercial buildings and even furniture pieces these materials are intended using durable composite construction processes.
Chopped strand reinforced plastics are much stronger and more durable than normal plastic, which is obviously useful in high reliability; applications.
In conclusion, the addition of chopped strand mat to composites has always been a definite improvement for plastics. Its durability, flexibility and low-cost make it the preferred choice among other applications. Working with a reliable supplier guarantees the availability of top-notch 4 oz fiberglass cloth materials, leading to outstanding final results. It is essential to follow safety regulations when cutting chopped strand mat material for a safer workplace. | guadalupe_porters_c7ccb16 |
1,910,172 | Linux User Creation Bash Script | Problem Statement Your company hng has employed many new developers. As a SysOps engineer,... | 0 | 2024-07-03T12:51:58 | https://dev.to/don-fortune/linux-user-creation-bash-script-73h | ## Problem Statement
Your company [hng](https://hng.tech/internship) has employed many new developers. As a SysOps engineer, write a bash script called `create_users.sh` that reads a text file containing the employee’s usernames and group names, where each line is formatted as `user;groups`. The script should create users and groups as specified, set up home directories with appropriate permissions and ownership, generate random passwords for the users, and log all actions to `/var/log/user_management.log`. Additionally, store the generated passwords securely in `/var/secure/user_passwords.txt`. Ensure error handling for scenarios like existing users and provide clear documentation and comments within the script.
## Case Study
Let's start with a text file, `developers.txt` for [hng hire](https://hng.tech/hire):
`light;sudo,dev,www-data
idimma;sudo
mayowa;dev,www-data`
The above file lists the developers: light, idimma, and mayowa, with a list of groups separated by commas `sudo, www-data, dev`.
Our job now is to create a bash script that will take this file (`developers.txt`) and process it.
## Solution
1. `#!/usr/bin/bash`
- The shebang line tells the system that this script should run with the bash shell.
2.
`
log() {
echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" >> "$LOG_FILE"
}
`
- Defines a function `log` to log messages with timestamps to the log file specified by `LOG_FILE`.
3.
`
generate_password() {
local password_length=8
tr -dc A-Za-z0-9 </dev/urandom | head -c $password_length
}
`
- Defines a function to generate a random password for developers.
4.
`
if [ "$(id -u)" -ne 0 ]; then
echo "Run script as root user or try using sudo " >&2
log "Script not run as root or with sudo privileges"
exit 1
fi
`
- Verifies that the script is run as root user.
5.
`
USER_FILE="$1"
LOG_FILE="/var/log/user_management.log"
PASSWORD_FILE="/var/secure/user_passwords.txt"
`
- Define Paths:
- `USER_FILE` = first argument
- `LOG_FILE` = keeps operational logs
- `PASSWORD_FILE` = stores the randomly generated passwords
6.
`
if [ -z "$USER_FILE" ]; then
echo "Usage: $0 <name-of-text-file>"
log "Error: No file provided. Usage: $0 <name-of-text-file>"
exit 1
fi
`
- Checks if a filename is provided as an argument. If not, logs an error and exits.
7.
`
if [ ! -f "$USER_FILE" ]; then
echo "File does not exist"
log "File '$USER_FILE' not found"
exit 1
fi
`
- Checks if the provided user file exists. If not, logs an error and exits.
8.
`
if [ ! -f "$LOG_FILE" ]; then
touch "$LOG_FILE"
chmod 0600 "$LOG_FILE"
log "Log file created: $LOG_FILE"
fi
`
- Creates the log file if it doesn't exist and sets its permissions to be readable and writable only by the owner.
9.
`
if [ ! -f "$PASSWORD_FILE" ]; then
mkdir -p /var/secure
touch "$PASSWORD_FILE"
chmod 0600 "$PASSWORD_FILE"
log "Password file created: $PASSWORD_FILE"
fi
`
- Creates the password file if it doesn't exist, ensuring it is stored securely by setting appropriate permissions.
10.
`
users_created=false
user_creation_failed=false
password_setting_failed=false
group_creation_failed=false
home_directory_setup_failed=false
all_users_exist=true
any_users_created=false
`
- Initializes various flags to track the success or failure of different operations.
11.
`
validate_username() {
if [[ ! "$1" =~ ^[a-zA-Z0-9_-]+$ ]]; then
return 1
fi
return 0
}
validate_groups() {
IFS=',' read -ra group_list <<< "$1"
for group in "${group_list[@]}"; do
if [[ ! "$group" =~ ^[a-zA-Z0-9_-]+$ ]]; then
return 1
fi
done
return 0
}
`
- Defines functions `validate_username` and `validate_groups` to ensure usernames and groups are valid, using regex checks.
12.
`
while IFS=';' read -r username groups; do
# Trim whitespace from username and groups
username=$(echo "$username" | xargs)
groups=$(echo "$groups" | xargs)
`
- Reads the user file line by line, splitting each line into `username` and `groups` variables, and trims any whitespace.
13.
`
if [ -z "$username" ] || [ -z "$groups" ]; then
log "Invalid line format in user file: '$username;$groups'"
user_creation_failed=true
continue
fi
if ! validate_username "$username"; then
log "Invalid username format: '$username'"
user_creation_failed=true
continue
fi
if ! validate_groups "$groups"; then
log "Invalid group format: '$groups'"
group_creation_failed=true
continue
fi
`
- Validates the format of each line in the user file, logging errors and setting flags as necessary.
14.
`
if id "$username" &>/dev/null; then
log "User $username already exists."
continue
fi
# User does not exist, so there's work to be done
all_users_exist=false
`
- Checks if the user already exists. If so, logs a message and skips to the next user. Otherwise, sets a flag indicating new users need to be created.
15.
`
if ! getent group "$username" > /dev/null; then
if groupadd "$username"; then
log "Group $username created."
else
log "Failed to create group $username."
group_creation_failed=true
continue
fi
fi
`
- Creates a personal group for the user if it doesn't already exist, logging the outcome.
16.
`
IFS=',' read -ra group_list <<< "$groups"
for group in "${group_list[@]}"; do
if ! getent group "$group" > /dev/null; then
if groupadd "$group"; then
log "Group $group created."
else
log "Failed to create group $group."
group_creation_failed=true
fi
fi
done
unset IFS
`
- Creates any additional groups if they don't already exist, logging the outcome.
17.
`
if useradd -m -g "$username" -G "$groups" "$username"; then
log "User $username created and added to groups $groups"
users_created=true
any_users_created=true
else
log "Failed to create user $username"
user_creation_failed=true
continue
fi
`
- Creates the user, assigns them to the primary group, and adds them to additional groups, logging the outcome.
18.
`
password=$(generate_password)
log "Generated password for $username"
`
- Generates a random password and sets the user's password, storing it securely.
`
# Set the user's password
if echo "$username:$password" | chpasswd; then
# Store the password securely in TXT format
echo "$username,$password" >> "$PASSWORD_FILE"
log "Password set for $username and stored securely"
else
log "Failed to set password for $username"
password_setting_failed=true
continue
fi
`
19.
`
if chown "$username:$username" "/home/$username" && chmod 700 "/home/$username"; then
log "Home directory for $username set up with appropriate permissions."
else
log "Failed to set up home directory for $username"
home_directory_setup_failed=true
fi
`
- Sets the correct permissions and ownership for the user's home directory, logging the outcome.
20.
`
done < "$USER_FILE"
`
- Ends the while loop that processes each line of the user file.
21.
`
log "User creation script run completed."
if [ "$any_users_created" = true ]; then
echo "$(date '+%Y-%m-%d %H:%M:%S') - User creation script completed successfully."
elif [ "$all_users_exist" = true ]; then
echo "Users already exist. Nothing left to do"
else
echo "$(date '+%Y-%m-%d %H:%M:%S') - No users were created successfully. Check log file."
log "No users were created successfully. Please check the input file format: username;group1,group2,group3."
fi
`
- Logs a summary of the script's execution and prints appropriate messages to the console based on the success or failure of user creation.
22.
`
[ "$user_creation_failed" = true ] && echo "Users creation incomplete." && log "Some users were not created due to errors. Check file format"
[ "$password_setting_failed" = true ] && echo "Users' passwords creation incomplete." && log "Some users' passwords were not set due to errors. Check file format"
[ "$group_creation_failed" = true ] && echo "Groups creation incomplete." && log "Some groups were not created due to errors. Check file format"
[ "$home_directory_setup_failed" = true ] && echo "Home directories creation incomplete." && log "Some home directories were not set up due to errors."
`
- Checks various flags and logs additional error messages if any failures occurred during the script's execution.
23.
`
exit 0
`
- Exits the script with a success status code.
To call the script `create_users.sh`, you need to provide the path to the user file as an argument. The user file should contain lines formatted as `username;group1,group2,group3`.
Here's the general format for calling the script:
`
sudo ./create_users.sh <name-of-text-file>
`
| don-fortune | |
1,910,171 | 토토커뮤니티 | 2024년, 온라인 토토사이트 커뮤니티는 더욱 활발하게 성장하고 있습니다. 이 가운데 '아웃룩 인디아 토토커뮤니티 플러그인 플레이 먹튀로얄'은 사용자들에게 안전하고 신뢰할 수 있는... | 0 | 2024-07-03T12:49:34 | https://dev.to/totocommunity02/totokeomyuniti-292c | 2024년, 온라인 토토사이트 커뮤니티는 더욱 활발하게 성장하고 있습니다. 이 가운데 '아웃룩 인디아 토토커뮤니티 플러그인 플레이 먹튀로얄'은 사용자들에게 안전하고 신뢰할 수 있는 베팅 환경을 제공하며, 다양한 스포츠 이벤트와 게임 옵션으로 큰 인기를 끌고 있습니다. 이번 기사에서는 '먹튀로얄'이 왜 2024년 최고의 토토사이트 커뮤니티로 선정되었는지, 그 이유와 장점, 제공하는 서비스에 대해 자세히 살펴보겠습니다.
아웃룩 인디아: 신뢰할 수 있는 정보 제공
아웃룩 인디아'는 토토사이트의 신뢰성과 안전성을 평가하고 검증하는 데 중요한 역할을 합니다. '먹튀'란 사용자가 베팅을 통해 얻은 금액을 제대로 지급받지 못하는 경우를 말하며, 이는 온라인 베팅 사용자들에게 큰 문제로 다가옵니다. '아웃룩 인디아'는 이러한 먹튀 사례를 예방하고자 정기적으로 사이트를 모니터링하며, 신뢰할 수 있는 사이트 목록을 업데이트합니다. 이를 통해 사용자들은 안전한 베팅 환경에서 마음 놓고 즐길 수 있습니다.
플러그인 플레이: 간편하고 빠른 접근성
플러그인 플레이' 기능은 사용자들에게 빠르고 간편한 접근성을 제공합니다. 복잡한 설치 과정 없이 바로 웹 브라우저를 통해 게임과 베팅을 즐길 수 있어 많은 사용자들에게 큰 호응을 얻고 있습니다. 이러한 접근성은 특히 이동 중이거나 다양한 기기를 사용하는 현대인들에게 매우 유용합니다. 언제 어디서나 쉽게 접속할 수 있다는 점은 사용자 편의를 극대화하는 중요한 요소입니다.
먹튀로얄: 고급스러운 경험과 다양한 이벤트
먹튀로얄'은 고급스러운 디자인과 사용자 친화적인 인터페이스로 유명합니다. 이 사이트는 다양한 스포츠 이벤트와 게임을 제공하며, 특히 라이브 베팅 기능을 통해 실시간으로 경기를 관람하며 베팅을 즐길 수 있습니다. 또한 정기적인 프로모션과 보너스 이벤트를 통해 사용자들에게 더 많은 혜택을 제공합니다. 이러한 이벤트들은 사용자들이 더욱 즐겁고 흥미롭게 베팅을 즐길 수 있도록 돕습니다.
**_[토토커뮤니티](https://www.outlookindia.com/plugin-play/%EB%A8%B9%ED%8A%80%EB%A1%9C%EC%96%84-2024-%EB%85%84-best-no1-%ED%86%A0%ED%86%A0%EC%82%AC%EC%9D%B4%ED%8A%B8-%EC%BB%A4%EB%AE%A4%EB%8B%88%ED%8B%B0)_**
다양한 게임과 스포츠 베팅
먹튀로얄'은 사용자들이 다양한 게임과 스포츠 베팅을 즐길 수 있도록 광범위한 옵션을 제공합니다. 축구, 농구, 야구, 테니스 등 인기 스포츠부터 e스포츠, 카지노 게임까지 다양한 선택지가 준비되어 있어, 모든 사용자들의 취향을 만족시킬 수 있습니다. 또한, 각종 스포츠 이벤트에 대한 라이브 베팅 기능을 통해 실시간으로 경기를 관람하며 베팅을 즐길 수 있는 점도 큰 장점입니다.
사용자 친화적인 인터페이스
먹튀로얄'의 인터페이스는 매우 직관적이고 사용자 친화적입니다. 복잡하지 않은 메뉴 구성과 명확한 정보 제공으로 초보자도 쉽게 이용할 수 있습니다. 이러한 편리한 사용성은 많은 사용자들에게 큰 호응을 얻고 있으며, 사이트의 전반적인 사용자 경험을 크게 향상시키고 있습니다.
먹튀로얄의 철저한 보안 시스템
먹튀로얄'이 2024년 BEST NO.1 토토사이트로 선정된 이유 중 하나는 철저한 보안 시스템입니다. 온라인 베팅 사이트에서 가장 중요한 요소 중 하나는 사용자 정보와 자산의 안전입니다. '먹튀로얄'은 최첨단 보안 기술을 도입하여 사용자들의 개인 정보와 베팅 자산을 보호합니다. 정기적인 보안 점검과 업데이트를 통해 해킹이나 정보 유출의 위험을 최소화하고, 안전한 베팅 환경을 제공합니다.
먹튀 방지 시스템
먹튀로얄'은 철저한 먹튀 방지 시스템을 갖추고 있습니다. 사이트는 정기적으로 검증을 통해 신뢰할 수 있는 파트너와만 협력하며, 모든 거래와 베팅 기록을 투명하게 관리합니다. 또한, 사용자들의 불만 사항이나 문제를 신속하게 해결하기 위한 전문 고객 지원팀을 운영하고 있습니다.
사용자 지원 서비스
먹튀로얄'은 사용자들에게 최고의 서비스 경험을 제공하기 위해 다양한 지원 서비스를 운영하고 있습니다. 24시간 운영되는 고객 지원 센터를 통해 사용자들은 언제든지 질문이나 문제를 해결할 수 있습니다. 전문적인 고객 지원팀은 신속하고 친절하게 사용자들의 요청에 대응하며, 사이트 이용에 불편함이 없도록 돕습니다.
고객 만족을 위한 다양한 혜택
먹튀로얄'은 사용자 만족을 최우선으로 생각합니다. 정기적인 프로모션과 보너스 이벤트를 통해 사용자들에게 더 많은 혜택을 제공하며, 다양한 리워드 프로그램을 통해 충성도 높은 사용자들에게 추가적인 보상을 제공합니다. 이러한 혜택들은 사용자들이 더욱 오랫동안 사이트를 이용하고, 즐거운 베팅 경험을 할 수 있도록 돕습니다.
토토사이트 커뮤니티의 역할
토토사이트 커뮤니티는 단순히 베팅을 즐기는 공간을 넘어, 사용자들 간의 정보 공유와 소통의 장입니다. '먹튀로얄'은 이러한 커뮤니티 형성을 적극 지원하며, 사용자들이 서로의 경험을 공유하고 조언을 얻을 수 있도록 다양한 커뮤니티 기능을 제공합니다. 이를 통해 사용자들은 더욱 안전하고 즐거운 베팅 경험을 할 수 있습니다.
커뮤니티 기능의 장점
먹튀로얄' 커뮤니티는 사용자들이 베팅 관련 정보를 공유하고, 최신 스포츠 뉴스와 경기를 논의할 수 있는 공간을 제공합니다. 또한, 베팅 전략이나 팁을 교환하며 서로에게 도움을 줄 수 있는 유익한 정보 교류의 장입니다. 이러한 커뮤니티 기능은 사용자들이 보다 나은 베팅 결정을 내릴 수 있도록 돕고, 전체적인 베팅 경험을 향상시킵니다.
결론
아웃룩 인디아 토토커뮤니티 플러그인 플레이 먹튀로얄'은 2024년 BEST NO.1 토토사이트 커뮤니티로서 그 명성을 확립하고 있습니다. 신뢰성 있는 정보 제공, 간편한 접근성, 다양한 게임과 이벤트, 철저한 보안 시스템, 사용자 친화적인 인터페이스, 그리고 탁월한 고객 지원 서비스를 통해 많은 사용자들에게 사랑받고 있는 '먹튀로얄'은 앞으로도 온라인 베팅 커뮤니티에서 중요한 역할을 할 것입니다. 사용자들은 '먹튀로얄'을 통해 안전하고 즐거운 베팅 경험을 이어갈 수 있을 것입니다. | totocommunity02 | |
1,910,170 | Learn Backend Development for Free: Top Websites to Get You Started 🎓✨ | Hey everyone 👋 Whether you're a newbie or looking to sharpen your skills, these resources have you... | 0 | 2024-07-03T12:49:10 | https://dev.to/devella/learn-backend-development-for-free-top-websites-to-get-you-started-1d3j | beginners, webdev, programming, backend | **Hey everyone 👋**
**Whether you're a newbie or looking to sharpen your skills, these resources have you covered ✅**
> _Explore interactive tutorials, comprehensive courses, and hands-on projects that make learning fun and effective._
Here are **10 websites to learn backend development for free** ⬇️:
_**》Share with your friends《**_
**1. Codecademy**
→ _Interactive coding lessons in a variety of programming languages._
🔷️ [Link](https://www.codecademy.com/)
**2. FreeCodeCamp**
→ _Learn by building projects and earning certifications._
🔺️ [Link](https://www.freecodecamp.org/learn/back-end-development-and-apis/)
**3. W3Schools**
→ _Web development tutorials, examples, and reference materials._
🔷️ [Link](https://www.w3schools.com/)
**4. Mozilla Developer Network**
→ _Documentation and tutorials on web development technologies._
🔺️ [Link](https://developer.mozilla.org/)
**5. GeeksforGeeks**
→ _Programming concepts, examples, and interview practice._
🔷️ [Link](https://www.geeksforgeeks.org/)
**6. The Odin Project**
→ _Free, open-source curriculum for learning web development._
🔺️ [Link](https://www.theodinproject.com/)
**7. Edabit**
→ _Interactive coding lessons and exercises in a range of programming languages._
🔷️ [Link](https://edabit.com/)
**8. Dev.to**
🔺️ [Link](https://dev.to/devella)
**9. Codewars**
→ _Martial arts-themed coding challenges and exercises._
🔷️ [Link](https://www.codewars.com/)
**10. YouTube**
🔺️ [Link](https://youtu.be/_uQrJ0TkZlc?si=ndu6fkQkR_mcWnwY)
**Follow For More @devella For More Content ‼️**
> _Feel free to share your favorite resources in the comments below! ⬇️👩💻🧑💻_
| devella |
1,910,029 | 【TypeScript】Displaying ChatGPT-like Streaming Responses with trpc in React | Purpose In chat services powered by generative AI like OpenAI's ChatGPT and Anthropic's... | 0 | 2024-07-03T12:49:09 | https://dev.to/mikan3rd/typescript-displaying-chatgpt-like-streaming-responses-with-trpc-in-react-3mnb | trpc, openai, typescript, react | # Purpose
In chat services powered by generative AI like OpenAI's ChatGPT and Anthropic's Claude, a **UI that gradually displays text by receiving data streamed from the generative AI model** is adopted. With a typical request/response format, you need to wait until the AI processing is completely finished, which can cause the client side to display a loading screen for tens of seconds depending on the processing content. Therefore, **receiving and displaying data little by little through streaming is good for UX**. As services using AI increase in the future, such use cases may increase. From a development perspective, while there are official examples for such implementations on the server side, I found few implementation examples for receiving and displaying streaming data on the client side. Therefore, this time I considered an **implementation example using trpc + React (Next.js) to support OpenAI's streaming responses** which I personally expect.
# Premise
### trpc
> Move Fast and Break Nothing.
End-to-end typesafe APIs made easy.
Experience the full power of TypeScript inference to boost productivity
for your full-stack application.
https://trpc.io/
In short, **trpc is an RPC framework that allows you to reuse the request and response type definitions written on the server side with TypeScript on the client side**.
For example, in REST API, there is no schema definition for requests and responses, so even if the request content from the client side is wrong or the response content from the server side is wrong, the process continues and unexpected errors may occur. While it is possible to define schemas by introducing tools like OpenAPI, you would need to introduce additional tools to check whether the actual requests and responses match those schema definitions.
In GraphQL or gRPC, schema definitions are built into the specification, but since schema definitions are done in their own languages, there is a learning cost and effort required for that, and since you have to manage both the actual code and the schema, you need to consider both when making changes.
(Of course, each has its own advantages, so they cannot be simply evaluated.)
On the other hand, in trpc, the TypeScript type definitions written on the server side are directly reflected and reusable on the client side, so **you only need to know TypeScript, and there is no need to define separate schemas, making it easy to change** and develop with very high productivity. Although there is a premise that the server side must also be implemented in TypeScript, given that TypeScript is so widespread that it's almost indispensable in recent frontend development, I personally think it is a good choice to write the backend in TypeScript to match the frontend.
Additionally, while it is often thought that libraries related to generative AI are only in Python, there are actually official supports for TypeScript in generative AI libraries like `openai-node`, `anthropic-sdk-typescript`, and `langchainjs`, which is another advantage of adopting TypeScript on the backend.
# Deliverable
An app was created where the response text is gradually displayed like ChatGPT after entering a prompt and clicking a button!
# Implementation
The app created this time can be checked on GitHub.
https://github.com/mikan3rd/trpc-openai-stream-sample
## Create a base for the trpc app
This time, we will create a base using `Next.js starter with Prisma`.
```bash
pnpx create-next-app --example https://github.com/trpc/trpc --example-path examples/next-prisma-starter trpc-prisma-starter
```
ref: https://trpc.io/docs/example-apps
## Enable stream with openai-node on the server side
There is an official library to handle OpenAI's API with TypeScript, so let's add it.
https://github.com/openai/openai-node
To receive results by passing a prompt like ChatGPT, use `openai.chat.completions.create()`. To enable streaming, just add `stream: true` as an argument.
```ts
import OpenAI from 'openai';
// https://platform.openai.com/docs/api-reference/streaming
const openai = new OpenAI({
apiKey: process.env.OPEN_AI_API_KEY,
});
const stream = await openai.chat.completions.create({
model: 'gpt-3.5-turbo',
messages: [
{
role: 'user',
content: text,
},
],
stream: true,
});
```
Please note that in order to use the API, you need to issue an API KEY and set up payment in advance.
ref: https://platform.openai.com/docs/quickstart/step-2-set-up-your-api-key
## Define an asynchronous generator function on the server side to control the stream
In trpc, you can implement streaming responses by defining an asynchronous generator function with `async function*` and returning an AsyncGenerator object. If you want to save the final data to a DB or similar, you can refer to the `fullContent` part.
```ts
let fullContent = '';
for await (const chunk of stream) {
const targetIndex = 0;
const target = chunk.choices[targetIndex];
const content = target?.delta?.content ?? '';
yield content;
fullContent += content;
}
console.log({ fullContent });
```
https://github.com/mikan3rd/trpc-openai-stream-sample/blob/431de4780d0c3f8f7494d8265f71cd686c0e55f0/src/server/functions/openai.ts
In the router, just call the above asynchronous generator function with `yield*`.
```ts
openai: publicProcedure
.input(
z.object({
text: z.string().min(1),
}),
)
.query(async function* ({ input }) {
yield* chatLangChain({ modelType: 'openai', text: input.text
});
```
https://github.com/mikan3rd/trpc-openai-stream-sample/blob/707892551c509863dc7d5006b219a7696b729401/src/server/routers/_app.ts
ref: https://trpc.io/docs/client/links/httpBatchStreamLink#generators
For those who might not be familiar with generators, here is a reference article.
(I had only used it in redux-saga.)
https://zenn.dev/qnighy/articles/112af47edfda96
## Replace with httpBatchStreamLink on the client side
To receive the stream on the client side, use `unstable_httpBatchStreamLink` in the `links` argument of `createTRPCNext`.
```ts
import { unstable_httpBatchStreamLink } from '@trpc/client';
unstable_httpBatchStreamLink({
url: `${getBaseUrl()}/api/trpc`,
})
```
https://github.com/mikan3rd/trpc-openai-stream-sample/blob/431de4780d0c3f8f7494d8265f71cd686c0e55f0/src/utils/trpc.ts
ref: https://trpc.io/docs/client/links/httpBatchStreamLink#streaming-mode
Though it is marked `unstable_`, it is safe to use in production, indicating only that there is a possibility of change.
(`experimental_` would indicate insufficient testing.)
https://trpc.io/docs/faq#unstable
## Display data on the client side
As with usual data fetching methods, using `useQuery()`, data is reflected in the `data` of the return value as the API is called, so just render it.
```ts
const [inputText, setInputText] = useState<string>(
'ChatGPT、Claude、LangChainについて簡潔に説明してください',
);
const openai = trpc.examples.openai.useQuery(
{ text: inputText },
{
enabled: false,
placeholderData: keepPreviousData,
},
);
const submitByQuery = async () => {
await openai.refetch();
};
return (
<p className="py-4 break-all whitespace-pre-wrap">
{openai.data?.map((chunk, index) => (
<Fragment key={index}>{chunk}</Fragment>
))}
</p>
);
```
https://github.com/mikan3rd/trpc-openai-stream-sample/blob/431de4780d0c3f8f7494d8265f71cd686c0e55f0/src/pages/index.tsx
ref: https://trpc.io/docs/client/react/useQuery#streaming
By the way, `@trpc/react-query` wraps `@tanstack/react-query`, and if you want to fetch data at an arbitrary timing, set `enabled: false` and call `refetch()`.
Additionally, if variables (in this example, the `{ text: inputText }` part) are changed, `data` is reset, so if you want to retain `data` until refetching, specify `placeholderData: keepPreviousData`.
## That's all!
With the trpc setup done, it was possible to implement a ChatGPT-like UI with simple and minimal code.
Also, if you want to save data, you would use a mutation instead of a query. I tried implementing that as well, but `data` remained an AsyncGenerator object, so it needed to be handled with `for await` as shown below.
```ts
const [text, setText] = useState<string>('');
const openai2 = trpc.examples.openai2.useMutation();
const submitByMutation = async () => {
openai2.mutate(
{ text: inputText },
{
onSuccess: async (data) => {
setText('');
for await (const val of data) {
setText((prev) => prev + val);
}
},
},
);
};
```
https://github.com/mikan3rd/trpc-openai-stream-sample/blob/431de4780d0c3f8f7494d8265f71cd686c0e55f0/src/pages/index.tsx
(Currently discussing if this can be fixed in the following issue)
https://github.com/trpc/trpc/issues/5846
# Bonus
Since it was an opportunity, I also implemented the same with Claude and LangChain.
## Claude
I also supported Anthropic's Claude, which has been well-reviewed recently. Although the API specifications are slightly different, the implementation was almost similar.
https://github.com/anthropics/anthropic-sdk-typescript
```ts
import Anthropic from '@anthropic-ai/sdk';
// https://docs.anthropic.com/en/api/messages-streaming
const anthropic = new Anthropic({
apiKey: process.env.ANTHROPIC_API_KEY,
});
export const messageCreateStream = async function* (text: string) {
const stream = await anthropic.messages.create({
max_tokens: 1024,
messages: [{ role: 'user', content: text }],
model: 'claude-3-haiku-20240307',
stream: true,
});
let fullContent = '';
for await (const messageStreamEvent of stream) {
switch (messageStreamEvent.type) {
case 'content_block_delta':
switch (messageStreamEvent.delta.type) {
case 'text_delta':
const text = messageStreamEvent.delta.text;
yield text;
fullContent += text;
break;
default:
break;
}
break;
default:
break;
}
}
console.log({ fullContent });
};
```
https://github.com/mikan3rd/trpc-openai-stream-sample/blob/431de4780d0c3f8f7494d8265f71cd686c0e55f0/src/server/functions/anthropicAI.ts
In this case as well, issuing an API KEY and setting up payment in advance is necessary.
## LangChain
By using LangChain, it was possible to call LLMs from OpenAI and Anthropic with more common code. It seems more convenient to use LangChain if you want to switch between or compare multiple LLMs.
https://github.com/langchain-ai/langchainjs
```ts
import { ChatOpenAI } from '@langchain/openai';
import { ChatAnthropic } from '@langchain/anthropic';
// https://js.langchain.com/v0.2/docs/how_to/streaming/
const chatOpenAI = new ChatOpenAI({
apiKey: process.env.OPEN_AI_API_KEY,
model: 'gpt-3.5-turbo',
});
const chatAnthropic = new ChatAnthropic({
apiKey: process.env.ANTHROPIC_API_KEY,
model: 'claude-3-haiku-20240307',
});
export const chatLangChain = async function* (args: {
modelType: 'openai' | 'anthropic';
text: string;
}) {
const { modelType, text } = args;
const model = (() => {
switch (modelType) {
case 'openai':
return chatOpenAI;
case 'anthropic':
return chatAnthropic;
default:
// eslint-disable-next-line @typescript-eslint/restrict-template-expressions
throw new Error(`Unknown modelType: ${modelType}`);
}
})();
const stream = await model.stream([['user', text]]);
let fullContent = '';
for await (const chunk of stream) {
const { content } = chunk;
if (typeof content !== 'string') {
console.log({ content });
throw new Error('Expected content to be a string');
}
yield content;
fullContent += content;
}
console.log({ fullContent });
};
```
https://github.com/mikan3rd/trpc-openai-stream-sample/blob/431de4780d0c3f8f7494d8265f71cd686c0e55f0/src/server/functions/langchain.ts
# Epilogue
I hope trpc becomes more widespread.
| mikan3rd |
1,910,169 | Distributed Hash Generation Algorithm in Python — Twitter Snowflake Approach | Into The Background… In any software development lifecycle, unique IDs play a major role... | 0 | 2024-07-03T12:46:18 | https://dev.to/manandoshi1301/distributed-hash-generation-algorithm-in-python-twitter-snowflake-approach-48mf | distributedsystems, softwaredevelopment, hashing, systemdesign | ## Into The Background…
In any software development lifecycle, unique IDs play a major role in manipulating and showcasing data. A lot depends on the uniqueness of each data segment associated with user transactions.
There are several ways to generate unique IDs, but when it comes to generating hashes at a rate of approximately <u>10,000 hashes per second</u> in a distributed fashion, it becomes a computational challenge.
The Twitter Snowflake approach is a widely used concept in recent advancements in distributed algorithms. Several other approaches can be used for hash generation, which will be covered in a future article!
## Some Knowledge on Approach…
To enable distributed hash generation, this algorithm employs the principle of “_divide and conquer_” on a 64-bit hash. The algorithm uses five different parameters to establish uniqueness while generating the hash and ensuring there are no collisions.
The five parameters are as follows:
- **Timestamp (41 bits)**: This is the binary version of the total milliseconds from the difference between the current time and the default epoch set by the party developing this algorithm. (In our example, we have set it to Twitter’s default epoch, i.e., November 4, 2010, at 1:42:54 UTC.)
- **Datacenter ID (5 bits)**: This is the binary version of the Datacenter ID, which can accommodate 2⁵ datacenters, totaling 32 data centers.
- **Machine ID (5 bits)**: This is the binary version of the Machine ID, which can accommodate 2⁵ machines per datacenter, totaling 32 machines per datacenter. (Virtual addressing can be introduced to increase the count, but currently, the algorithm limits it to 32 machines.)
- **Sequence Number (12 bits)**: This is the binary format of the sequence number, which counts the number of hashes generated by a machine/process within any millisecond. The sequence number resets to 0 after each millisecond. After each ID generation, the sequence number increments by one if the request is received within the same millisecond.
- **Sign Bit (1-bit defaults to 0)**: The one extra bit in the system is reserved for any custom case while using this algorithm on a large scale. It can be used as parity, to distinguish between signed and unsigned numbers, to set flags, or for any future uses.
Each machine in the system involved in generating hashes can run the following templates to generate a hash:
## Let’s Code…
While writing the code for generating a hash, if you don’t have a distributed architecture or the resources to implement one, you can set the default bits of ‘Datacenter ID’ as ‘00000’ and ‘Machine ID’ as ‘00000’. This scenario is also reflected in the following code:
```
from datetime import datetime, timedelta
class GenerateHash:
def __init__(self):
self.sequence_timestamp = datetime.utcnow()
self.sequence_number = 0
# Setting default epoch to 04 November 2010 at 1:42:54 UTC Time
self.time_ref = datetime(2010, 11, 4, 1, 42,54)
def generate(self):
## Sign bit: Will be useful for future references
sign_bit = '0'
## Datacenter bit (Default Datacenter: '00000')
datacenter_bit = '0' * 5
## Machine bit (Default Machine: '00000')
mac_bit = '0' * 5
## Timestamp bit
# Getting Current Time in utc
time_now = datetime.utcnow()
# Time Difference since default epoch
time_diff = time_now - self.time_ref
# Total time_diff in miliseconds
ms = int(time_diff.total_seconds() * 1000)
# Miliseconds conversion in binary to 41 bits
ms_bin = format(ms, '41b')
timestamp_bit = ms_bin
## Sequence bit
# Time difference since last request on this machine
time_difference = time_now - self.sequence_timestamp
# If time_difference > 1 ms: reset the sequence number
if time_difference > timedelta(milliseconds=1):
self.sequence_number = 0
# Set the sequence timestamp to current requests timestamp
self.sequence_timestamp = time_now
# Joining all strings
# Also formatting self.sequence_number int -> binary of twelve bytes
final_bin = sign_bit + timestamp_bit + datacenter_bit + mac_bit + format(self.sequence_number, '12b')
# Replacing all spaces with zero as bit
final_bin = final_bin.replace(' ', '0')
# Incrementing the sequence_number
self.sequence_number += 1
# Converting final binary to decimal and decimal to hex value
hex_val = hex(int(final_bin, 2))
# Avoiding extracting string 0x.. generated due to hex() function
final_hex = hex_val[2:]
return final_hex
hash_generator = GenerateHash()
new_hash = hash_generator.generate()
print(new_hash)
```
Here we have used the ‘<u>_datetime_</u>’ library to support time operations since we use universal time to employ machines/servers globally.
## The Benefits, Concerns, and more…
**Benefits First :)**
1. We generate alphanumeric hashes in a distributed fashion ensuring consistency and scalability across our systems.
2. These hashes are timestamp-based, allowing us to track their creation time, sort them accordingly, and trace clicks on features, among other uses.
3. Not only can we control when these hashes are generated, but we can also customize how they are generated. This flexibility enables us to modify or update our hash generation methods as our systems evolve.
4. This algorithm supports the generation of at least 10,000 hashes per second.
**Some Concerns :(**
1. The hash IDs are timestamp-based and include specific data center and machine IDs, which makes them vulnerable to the prediction of future generated IDs.
2. Due to the predefined guidelines for hash generation and the lengthy hash string, there is limited scope for customization. This constraint can restrict the algorithm’s utility and adaptability in various systems.
**Something more to focus on…**
- In our current algorithm, we do not have built-in support for clock synchronization in a multi-machine environment. We currently assume that our ID generation servers have synchronized clocks. However, the optimal and widely adopted solution would be to implement the Network Time Protocol (NTP), which we will cover in future articles. So stay tuned…
<u>Thank you so much for getting this far!</u> | manandoshi1301 |
1,910,168 | 토토커뮤니티 | 2024년, 온라인 토토사이트 커뮤니티는 더욱 활발하게 성장하고 있습니다. 이 가운데 '아웃룩 인디아 토토커뮤니티 플러그인 플레이 먹튀로얄'은 사용자들에게 안전하고 신뢰할 수 있는... | 0 | 2024-07-03T12:46:05 | https://dev.to/totocommunity02/totokeomyuniti-57dn | 2024년, 온라인 토토사이트 커뮤니티는 더욱 활발하게 성장하고 있습니다. 이 가운데 '아웃룩 인디아 토토커뮤니티 플러그인 플레이 먹튀로얄'은 사용자들에게 안전하고 신뢰할 수 있는 베팅 환경을 제공하며, 다양한 스포츠 이벤트와 게임 옵션으로 큰 인기를 끌고 있습니다. 이번 기사에서는 '먹튀로얄'이 왜 2024년 최고의 토토사이트 커뮤니티로 선정되었는지, 그 이유와 장점, 제공하는 서비스에 대해 자세히 살펴보겠습니다.
아웃룩 인디아: 신뢰할 수 있는 정보 제공
아웃룩 인디아'는 토토사이트의 신뢰성과 안전성을 평가하고 검증하는 데 중요한 역할을 합니다. '먹튀'란 사용자가 베팅을 통해 얻은 금액을 제대로 지급받지 못하는 경우를 말하며, 이는 온라인 베팅 사용자들에게 큰 문제로 다가옵니다. '아웃룩 인디아'는 이러한 먹튀 사례를 예방하고자 정기적으로 사이트를 모니터링하며, 신뢰할 수 있는 사이트 목록을 업데이트합니다. 이를 통해 사용자들은 안전한 베팅 환경에서 마음 놓고 즐길 수 있습니다.
**_[토토커뮤니티](https://www.outlookindia.com/plugin-play/%EB%A8%B9%ED%8A%80%EB%A1%9C%EC%96%84-2024-%EB%85%84-best-no1-%ED%86%A0%ED%86%A0%EC%82%AC%EC%9D%B4%ED%8A%B8-%EC%BB%A4%EB%AE%A4%EB%8B%88%ED%8B%B0)_**
플러그인 플레이: 간편하고 빠른 접근성
플러그인 플레이' 기능은 사용자들에게 빠르고 간편한 접근성을 제공합니다. 복잡한 설치 과정 없이 바로 웹 브라우저를 통해 게임과 베팅을 즐길 수 있어 많은 사용자들에게 큰 호응을 얻고 있습니다. 이러한 접근성은 특히 이동 중이거나 다양한 기기를 사용하는 현대인들에게 매우 유용합니다. 언제 어디서나 쉽게 접속할 수 있다는 점은 사용자 편의를 극대화하는 중요한 요소입니다.
먹튀로얄: 고급스러운 경험과 다양한 이벤트
먹튀로얄'은 고급스러운 디자인과 사용자 친화적인 인터페이스로 유명합니다. 이 사이트는 다양한 스포츠 이벤트와 게임을 제공하며, 특히 라이브 베팅 기능을 통해 실시간으로 경기를 관람하며 베팅을 즐길 수 있습니다. 또한 정기적인 프로모션과 보너스 이벤트를 통해 사용자들에게 더 많은 혜택을 제공합니다. 이러한 이벤트들은 사용자들이 더욱 즐겁고 흥미롭게 베팅을 즐길 수 있도록 돕습니다.
다양한 게임과 스포츠 베팅
먹튀로얄'은 사용자들이 다양한 게임과 스포츠 베팅을 즐길 수 있도록 광범위한 옵션을 제공합니다. 축구, 농구, 야구, 테니스 등 인기 스포츠부터 e스포츠, 카지노 게임까지 다양한 선택지가 준비되어 있어, 모든 사용자들의 취향을 만족시킬 수 있습니다. 또한, 각종 스포츠 이벤트에 대한 라이브 베팅 기능을 통해 실시간으로 경기를 관람하며 베팅을 즐길 수 있는 점도 큰 장점입니다.
사용자 친화적인 인터페이스
먹튀로얄'의 인터페이스는 매우 직관적이고 사용자 친화적입니다. 복잡하지 않은 메뉴 구성과 명확한 정보 제공으로 초보자도 쉽게 이용할 수 있습니다. 이러한 편리한 사용성은 많은 사용자들에게 큰 호응을 얻고 있으며, 사이트의 전반적인 사용자 경험을 크게 향상시키고 있습니다.
먹튀로얄의 철저한 보안 시스템
먹튀로얄'이 2024년 BEST NO.1 토토사이트로 선정된 이유 중 하나는 철저한 보안 시스템입니다. 온라인 베팅 사이트에서 가장 중요한 요소 중 하나는 사용자 정보와 자산의 안전입니다. '먹튀로얄'은 최첨단 보안 기술을 도입하여 사용자들의 개인 정보와 베팅 자산을 보호합니다. 정기적인 보안 점검과 업데이트를 통해 해킹이나 정보 유출의 위험을 최소화하고, 안전한 베팅 환경을 제공합니다.
먹튀 방지 시스템
먹튀로얄'은 철저한 먹튀 방지 시스템을 갖추고 있습니다. 사이트는 정기적으로 검증을 통해 신뢰할 수 있는 파트너와만 협력하며, 모든 거래와 베팅 기록을 투명하게 관리합니다. 또한, 사용자들의 불만 사항이나 문제를 신속하게 해결하기 위한 전문 고객 지원팀을 운영하고 있습니다.
사용자 지원 서비스
먹튀로얄'은 사용자들에게 최고의 서비스 경험을 제공하기 위해 다양한 지원 서비스를 운영하고 있습니다. 24시간 운영되는 고객 지원 센터를 통해 사용자들은 언제든지 질문이나 문제를 해결할 수 있습니다. 전문적인 고객 지원팀은 신속하고 친절하게 사용자들의 요청에 대응하며, 사이트 이용에 불편함이 없도록 돕습니다.
고객 만족을 위한 다양한 혜택
먹튀로얄'은 사용자 만족을 최우선으로 생각합니다. 정기적인 프로모션과 보너스 이벤트를 통해 사용자들에게 더 많은 혜택을 제공하며, 다양한 리워드 프로그램을 통해 충성도 높은 사용자들에게 추가적인 보상을 제공합니다. 이러한 혜택들은 사용자들이 더욱 오랫동안 사이트를 이용하고, 즐거운 베팅 경험을 할 수 있도록 돕습니다.
토토사이트 커뮤니티의 역할
토토사이트 커뮤니티는 단순히 베팅을 즐기는 공간을 넘어, 사용자들 간의 정보 공유와 소통의 장입니다. '먹튀로얄'은 이러한 커뮤니티 형성을 적극 지원하며, 사용자들이 서로의 경험을 공유하고 조언을 얻을 수 있도록 다양한 커뮤니티 기능을 제공합니다. 이를 통해 사용자들은 더욱 안전하고 즐거운 베팅 경험을 할 수 있습니다.
커뮤니티 기능의 장점
먹튀로얄' 커뮤니티는 사용자들이 베팅 관련 정보를 공유하고, 최신 스포츠 뉴스와 경기를 논의할 수 있는 공간을 제공합니다. 또한, 베팅 전략이나 팁을 교환하며 서로에게 도움을 줄 수 있는 유익한 정보 교류의 장입니다. 이러한 커뮤니티 기능은 사용자들이 보다 나은 베팅 결정을 내릴 수 있도록 돕고, 전체적인 베팅 경험을 향상시킵니다.
결론
아웃룩 인디아 토토커뮤니티 플러그인 플레이 먹튀로얄'은 2024년 BEST NO.1 토토사이트 커뮤니티로서 그 명성을 확립하고 있습니다. 신뢰성 있는 정보 제공, 간편한 접근성, 다양한 게임과 이벤트, 철저한 보안 시스템, 사용자 친화적인 인터페이스, 그리고 탁월한 고객 지원 서비스를 통해 많은 사용자들에게 사랑받고 있는 '먹튀로얄'은 앞으로도 온라인 베팅 커뮤니티에서 중요한 역할을 할 것입니다. 사용자들은 '먹튀로얄'을 통해 안전하고 즐거운 베팅 경험을 이어갈 수 있을 것입니다. | totocommunity02 | |
1,910,167 | PROCESS OF REGISTERING FOR UDYAM REGISTERATION | Certainly! Here's a step-by-step guide to registering for Udyam Registration in India: Step 1: Visit... | 0 | 2024-07-03T12:45:29 | https://dev.to/neelu_jarika_3239ec190277/process-of-registering-for-udyam-registeration-2d1l | udyamregisteration, business |
Certainly! Here's a step-by-step guide to registering for
[Udyam Registration](https://udyogaadhaaronline.org/) in India:
Step 1: Visit the Udyam Registration Portal
Go to the Udyam Registration portal
Step 2: Create an Account (if necessary)
If you're visiting the portal for the first time, you may need to create an account. Ensure you have a valid email address and mobile number handy for verification purposes.
Step 3: Fill in the Udyam Registration Form
Once logged in, fill out the Udyam Registration form with the required details:
Personal Details: Enter your Aadhaar number, name, social category, gender, and whether you are handicapped.
Business Details: Provide your PAN (Permanent Account Number), business name, type of organization (like proprietorship, partnership, company, etc.), location (district, state), and previous registration details (if any).
Activities: Specify the main business activity (manufacturing or service) and the NIC (National Industrial Classification) code related to your business activities. You can select multiple activities if applicable.
Investment in Plant & Machinery/Equipment: Enter the total amount invested in plant & machinery or equipment, excluding land and building.
Bank Account Details: Provide your bank account number and IFSC code.
Optional: Optional details include employment details and turnover details.
Step 4: Submit the Form
Double-check all the information provided in the form for accuracy. Once satisfied, submit the form electronically.
Step 5: Acknowledgment and Verification
After submission, an acknowledgment containing the Udyam Registration Number (URN) will be generated and sent to your registered email address and mobile number.
Step 6: No Documents Required Initially
No documents or proof are required to be uploaded or submitted at the time of registration. Self-declaration is sufficient.
Step 7: Verification Process
The details provided during registration will be verified subsequently by the authorities based on government records and self-declared information.
Step 8: Receipt of Registration Certificate
Upon successful verification, a certificate of registration will be issued with the Udyam Registration Number (URN) and the date of issue.
##Additional Tips:
Ensure all details provided during registration are accurate and up-to-date.
Keep your registration details safe for future reference.
There is no fee for Udyam Registration.
This step-by-step guide should help you navigate through the Udyam Registration process smoothly. If you encounter any issues or need further assistance, consider visiting the official Udyam Registration portal or contacting an MSME facilitation center for guidance.
## Udyam registration certificate process
After completing the Udyam Registration process online, you will receive an acknowledgment in the form of a Udyam Registration Number (URN) immediately. This acknowledgment serves as proof of your registration as an MSME (Micro, Small, and Medium Enterprise) in India. Here’s how the process unfolds further to obtain the Udyam Registration certificate:
## Step-by-Step Process to Obtain Udyam Registration Certificate
:
Acknowledgment Receipt:
Upon successful submission of the Udyam Registration form online, you will receive an acknowledgment with your Udyam [Registration](https://simple.wikipedia.org/wiki/Registration) Number (URN) on the registered email address and mobile number.
Verification Process:
The details provided in your registration form will undergo verification by the authorities. This verification may involve cross-referencing with government databases and self-declared information.
Issuance of Registration Certificate:
Once the verification process is completed and your details are found to be accurate, a certificate of registration will be issued.
The Udyam Registration Certificate will contain your Udyam Registration Number (URN), date of issue, and other relevant details of your MSME registration.
Accessing the Certificate:
You can download and print the Udyam Registration Certificate from the Udyam Registration portal. It will be available in PDF format.
Login to the Udyam Registration portal using your credentials.
Navigate to the section where certificates are available.
Download the certificate and save it for your records.
Validity and Renewal:
The Udyam Registration Certificate is valid for a lifetime. There is no need for renewal of the certificate.
However, you may need to update your information if there are any changes to your business details.
Benefits of Registration:
With the Udyam Registration Certificate, you can avail various benefits provided by the government for MSMEs, such as subsidies, incentives, priority sector lending, etc.
It also facilitates participation in government tenders and schemes that are exclusively available to MSMEs.
## Important Points to Note:
No Physical Certificate: The Udyam Registration Certificate is issued electronically in PDF format. There is no physical certificate provided.
Self-Service: The process of obtaining the certificate is primarily self-service through the Udyam Registration portal.
By following these steps, you can successfully obtain and access your Udyam Registration Certificate, demonstrating your official status as an MSME registered under the Udyam Registration scheme in India. If you encounter any issues or delays, you may contact the MSME helpline or visit an MSME facilitation center for assistance.
NOTE: APPLYING FOR [UDYAM RE REGISTRATION](https://udyogaadhaaronline.org/udyam-re-registration-form.php) THROUGH UDYAM PORTAL
## CONCLUSION
In summary, Udyam Registration is a straightforward online process for MSMEs in India. Upon submission of the registration form, you receive an immediate acknowledgment with a unique registration number. After verification, a lifetime validity Udyam Registration Certificate is issued electronically. This certificate grants access to various government benefits and schemes aimed at supporting MSMEs in the country.
| neelu_jarika_3239ec190277 |
1,910,166 | Advantages of BitPower Loop DeFi | Introduction The rapid development of blockchain technology has brought revolutionary changes to the... | 0 | 2024-07-03T12:45:26 | https://dev.to/woy_ca2a85cabb11e9fa2bd0d/advantages-of-bitpower-loop-defi-4phi | btc |
Introduction
The rapid development of blockchain technology has brought revolutionary changes to the financial industry, and decentralized finance (DeFi) has become one of the important innovations. The BitPower Loop DeFi platform is a decentralized smart contract protocol based on the Ethereum Virtual Machine (EVM), which aims to provide efficient, secure and transparent financial services. This article will explore the advantages of BitPower Loop DeFi and analyze its advantages in decentralization, smart contract security, profit mechanism and user experience.
Advantages of decentralization
1. No intermediary intervention
BitPower Loop DeFi relies entirely on smart contracts to operate, without centralized management agencies or intermediaries. All transactions and operations are automatically executed by smart contracts, eliminating the risk of human intervention. This decentralized mechanism ensures the transparency and fairness of the system, and all participants operate according to the same rules.
2. Transparency and openness
All transaction records and smart contract codes are public and can be viewed by anyone on the blockchain. This transparency increases the credibility of the system, allowing users to participate with confidence because they can view and verify their transaction records and earnings at any time.
Security of smart contracts
1. Immutability
BitPower Loop DeFi's smart contracts cannot be changed once deployed. This immutability ensures the stability and reliability of the contract terms, and users do not need to worry about the rules being changed at will.
2. Automation and efficiency
The automated execution of smart contracts eliminates human errors and delays and improves the efficiency of the system. For example, in BitPower Loop, users' earnings are automatically transferred to their wallets after maturity without manual operation. This automation not only improves efficiency but also reduces operating costs.
3. Secure asset collateral
The BitPower Loop DeFi platform supports users to borrow and lend by providing collateral, and the smart contract automatically adjusts the interest rate and collateral value according to market conditions. This mechanism ensures the security of the lending process and reduces the risks of both borrowers and lenders.
Advantages of the yield mechanism
1. High yield
The yield offered by BitPower Loop is more attractive than traditional financial products. For example, users can get the following returns by providing liquidity on the platform:
1 day: 100.4%
7 days: 104%
14 days: 109.5%
28 days: 124%
This high rate of return has attracted a large number of users to participate, injecting sufficient liquidity into the platform.
2. Compound interest mechanism
BitPower Loop also provides a compound interest mechanism, and users can obtain higher annualized returns by continuously reinvesting. For example:
1 day: 429%
7 days: 773%
14 days: 1065%
28 days: 1638%
This compound interest mechanism significantly increases users' long-term returns, further enhancing the attractiveness of the platform.
3. Referral rewards
BitPower Loop has designed a complete referral reward mechanism, and users can get additional benefits by inviting friends to join the platform. The specific reward structure is as follows:
First-generation friends: 20%
Second-generation friends: 10%
Third to seventh-generation friends: 5%
Eighth to tenth-generation friends: 3%
Eleventh to seventeenth-generation friends: 1%
This multi-level referral reward mechanism encourages users to actively promote the platform and help the platform quickly expand its user base.
Advantages of user experience
1. Simple and easy to use
BitPower Loop's platform interface design is simple and intuitive, and the operation process is simple and clear. Whether it is a novice or an experienced user, you can easily get started and quickly complete operations such as lending and liquidity provision.
2. Global services
BitPower Loop DeFi platform supports global user participation, and users do not need to worry about geographical restrictions. The platform's smart contracts are completely decentralized, and users anywhere in the world can fairly participate and enjoy the financial services provided by the platform.
3. Zero handling fees
BitPower Loop does not charge any platform commissions or additional fees, and all participants can use the platform's services for free. This zero-handling fee design further reduces the user's participation cost and increases user stickiness.
Conclusion
As an innovative decentralized financial platform, BitPower Loop DeFi has significant advantages in decentralization, smart contract security, profit mechanism and user experience. By eliminating intermediaries, providing high transparency and security, designing high-yield and compound interest mechanisms, and optimizing user experience, BitPower Loop provides users with an efficient, secure and attractive financial service platform. In the future, with the continuous development and popularization of blockchain technology, BitPower Loop DeFi is expected to attract more users worldwide and promote the development of decentralized finance. | woy_ca2a85cabb11e9fa2bd0d |
1,910,164 | Top Reasons Why Businesses with Hybrid Web Apps are More Successful in 2024 An Experts Overview | Do you know why smartphones have become so popular in such a short time? Smartphones can do various... | 0 | 2024-07-03T12:45:10 | https://dev.to/ashe_leo/top-reasons-why-businesses-with-hybrid-web-apps-are-more-successful-in-2024-an-experts-overview-519d | webdev, web, website, mobile |
Do you know why smartphones have become so popular in such a short time? Smartphones can do various things, including sending emails, watching films, and using social networks. They are becoming more popular as they make daily tasks easier. The popularity of smartphones in recent years has increased demand for mobile apps.
This is because there is need to define the required nature of the mobile apps based on the needs of the customers as well as the business goals. So it is necessary to develop hybrid mobile applications as both native and web-based applications have their own advantages. Their ability to transition through different stages is directly related to their ability to perform consistently across multiple stages. Hybrid app development aims to create a single application that performs consistently across various stages.
According to Forbes, 37 of America's top 50 retail apps are hybrids. Furthermore, popular platforms like Twitter, Instagram, Gmail, Uber, etc., use hybrid apps.
Most businesses and individuals choose hybrid mobile and Web Design Milwaukee for a variety of reasons other than the fact that it is a new technology. The main reasons for hybrid app development are listed below.
## **Top 10 Reasons Why Businesses with Hybrid Web Apps are more successful in 2024:**
Hybrid app development benefits businesses, particularly start-ups, by enabling them to simultaneously enter the mobile market on all major platforms.
Here are the Top Reasons Why Businesses with Hybrid Web Apps Will Be More Successful in 2024.
**1. Cost-Effectiveness:**
Developing and maintaining web application examples can be less expensive than traditional desktop applications. The unified development approach for web applications eliminates the need for separate versions for different operating systems. Furthermore, the cloud-based nature of web apps may result in cost savings for IT infrastructure.
**2. Wider audience:**
Native or web applications rely on a single platform, which results in a significant loss of profitable user share to other operating systems. In today's competitive environment, targeting a single audience results in stunted growth. Hybrid app development can help in such cases. The overall market share is 99 percent, with Android accounting for 73 percent and iOS accounting for 26 percent. Going hybrid means reaching a wider audience.
**3. Best Offline Support:**
Hybrid apps are best for users with limited data plans and poor internet connections. Some hybrid apps employ offline support in a few areas, enabling users to continue using the application even when his or her internet connection is unavailable. End users can also store data offline in hybrid apps using the device's APIs.
**4. Better UI/UX:**
Several tools are available to enhance the user interface and interactions within the development of hybrid applications. On the other hand, hybrid apps perform better and faster, improving the user experience. They can function successfully and efficiently across multiple platforms because they share the same features and code.
**5. Less time to market:**
Hybrid app development allows Web Design Milwaukee companies to write application code using their existing development tools. They do not need to look for new technologies or hire developers knowledgeable about platform-specific technologies to build their applications. In addition, you can reuse the same code for multiple platforms, eliminating the need to create a new codebase for each one. This saves significant time and shortens the time required to deploy the app.
**6. Cross-platform compatibility:**
Cross-platform compatibility is one of the most important benefits of creating a hybrid app. The developers must write code once and run it across multiple platforms. Hybrid apps unlike native apps are not restricted to any particular operating system or gadget. This makes them ideal for businesses that don't want to spend time and money to build separate apps for each platform.
**7. Faster Development:**
Hybrid mobile apps are easier and faster to develop than native apps. They allow businesses to use their existing web design talent pool to dominate the mobile market. Knowledge of JavaScript and HTML is required. Once the code is written, the application can run in either environment (Specifically, iOS and Android).
**8. Easy Integration:**
The reason for hybrid apps is that you do not have to look for other specific libraries of SDKs, APIs, and other related instruments. The same SDK and API libraries are sufficient for creating hybrid applications. Apps designed for one platform cannot be installed on another; however, apps intended for hybrid platforms overcome this limitation through simple integration and cross-platform functionality.
**9. Easy scalability:**
This brings another important issue in mobile application development which is scalability. A scalable app provides more flexibility, reliability, security, and the ability to add new functionality and features. Hybrid mobile app development allows for easy scalability because developers do not need to make significant changes to scale up the app across platforms. They can make one change to the code, which will be effective across all platforms.
**10. Easier Maintenance and Updates:**
Because web application examples are hosted on servers, updates can be distributed to all users simultaneously without requiring them to download and install them individually. It also makes certain that all the users are able to utilize the advanced elements. As a result, Web Design Milwaukee companies can expect lower support costs and a lighter load on IT departments.
**## Conclusion:**
So, when choosing the best app for business, consider the advantages and disadvantages of native, hybrid, and web applications.
Each application you select has advantages and much to offer for expanding your business. Select an application based on your target audience rather than your competitor's success. The choice of a mobile app is based on user expectations and business needs.
A hybrid app is a great option unless you're creating a game application because it's affordable and compatible with multiple platforms.
SoftCircles is a [Milwaukee web design company](https://softcircles.com/web-design-company-in-milwaukee-wi), and our experts are ready to help you overcome your business challenges. | ashe_leo |
1,910,162 | Advantages of BitPower Loop DeFi | Introduction The rapid development of blockchain technology has brought revolutionary changes to the... | 0 | 2024-07-03T12:43:16 | https://dev.to/woy_621fc0f3ac62fff68606e/advantages-of-bitpower-loop-defi-4eon | btc |
Introduction
The rapid development of blockchain technology has brought revolutionary changes to the financial industry, and decentralized finance (DeFi) has become one of the important innovations. The BitPower Loop DeFi platform is a decentralized smart contract protocol based on the Ethereum Virtual Machine (EVM), which aims to provide efficient, secure and transparent financial services. This article will explore the advantages of BitPower Loop DeFi and analyze its advantages in decentralization, smart contract security, profit mechanism and user experience.
Advantages of decentralization
1. No intermediary intervention
BitPower Loop DeFi relies entirely on smart contracts to operate, without centralized management agencies or intermediaries. All transactions and operations are automatically executed by smart contracts, eliminating the risk of human intervention. This decentralized mechanism ensures the transparency and fairness of the system, and all participants operate according to the same rules.
2. Transparency and openness
All transaction records and smart contract codes are public and can be viewed by anyone on the blockchain. This transparency increases the credibility of the system, allowing users to participate with confidence because they can view and verify their transaction records and earnings at any time.
Security of smart contracts
1. Immutability
BitPower Loop DeFi's smart contracts cannot be changed once deployed. This immutability ensures the stability and reliability of the contract terms, and users do not need to worry about the rules being changed at will.
2. Automation and efficiency
The automated execution of smart contracts eliminates human errors and delays and improves the efficiency of the system. For example, in BitPower Loop, users' earnings are automatically transferred to their wallets after maturity without manual operation. This automation not only improves efficiency but also reduces operating costs.
3. Secure asset collateral
The BitPower Loop DeFi platform supports users to borrow and lend by providing collateral, and the smart contract automatically adjusts the interest rate and collateral value according to market conditions. This mechanism ensures the security of the lending process and reduces the risks of both borrowers and lenders.
Advantages of the yield mechanism
1. High yield
The yield offered by BitPower Loop is more attractive than traditional financial products. For example, users can get the following returns by providing liquidity on the platform:
1 day: 100.4%
7 days: 104%
14 days: 109.5%
28 days: 124%
This high rate of return has attracted a large number of users to participate, injecting sufficient liquidity into the platform.
2. Compound interest mechanism
BitPower Loop also provides a compound interest mechanism, and users can obtain higher annualized returns by continuously reinvesting. For example:
1 day: 429%
7 days: 773%
14 days: 1065%
28 days: 1638%
This compound interest mechanism significantly increases users' long-term returns, further enhancing the attractiveness of the platform.
3. Referral rewards
BitPower Loop has designed a complete referral reward mechanism, and users can get additional benefits by inviting friends to join the platform. The specific reward structure is as follows:
First-generation friends: 20%
Second-generation friends: 10%
Third to seventh-generation friends: 5%
Eighth to tenth-generation friends: 3%
Eleventh to seventeenth-generation friends: 1%
This multi-level referral reward mechanism encourages users to actively promote the platform and help the platform quickly expand its user base.
Advantages of user experience
1. Simple and easy to use
BitPower Loop's platform interface design is simple and intuitive, and the operation process is simple and clear. Whether it is a novice or an experienced user, you can easily get started and quickly complete operations such as lending and liquidity provision.
2. Global services
BitPower Loop DeFi platform supports global user participation, and users do not need to worry about geographical restrictions. The platform's smart contracts are completely decentralized, and users anywhere in the world can fairly participate and enjoy the financial services provided by the platform.
3. Zero handling fees
BitPower Loop does not charge any platform commissions or additional fees, and all participants can use the platform's services for free. This zero-handling fee design further reduces the user's participation cost and increases user stickiness.
Conclusion
As an innovative decentralized financial platform, BitPower Loop DeFi has significant advantages in decentralization, smart contract security, profit mechanism and user experience. By eliminating intermediaries, providing high transparency and security, designing high-yield and compound interest mechanisms, and optimizing user experience, BitPower Loop provides users with an efficient, secure and attractive financial service platform. In the future, with the continuous development and popularization of blockchain technology, BitPower Loop DeFi is expected to attract more users worldwide and promote the development of decentralized finance. | woy_621fc0f3ac62fff68606e |
1,910,161 | Advantages of BitPower Loop DeFi | Introduction The rapid development of blockchain technology has brought revolutionary changes to the... | 0 | 2024-07-03T12:40:40 | https://dev.to/wot_ee4275f6aa8eafb35b941/advantages-of-bitpower-loop-defi-57ai | btc |
Introduction
The rapid development of blockchain technology has brought revolutionary changes to the financial industry, and decentralized finance (DeFi) has become one of the important innovations. The BitPower Loop DeFi platform is a decentralized smart contract protocol based on the Ethereum Virtual Machine (EVM), which aims to provide efficient, secure and transparent financial services. This article will explore the advantages of BitPower Loop DeFi and analyze its advantages in decentralization, smart contract security, profit mechanism and user experience.
Advantages of decentralization
1. No intermediary intervention
BitPower Loop DeFi relies entirely on smart contracts to operate, without centralized management agencies or intermediaries. All transactions and operations are automatically executed by smart contracts, eliminating the risk of human intervention. This decentralized mechanism ensures the transparency and fairness of the system, and all participants operate according to the same rules.
2. Transparency and openness
All transaction records and smart contract codes are public and can be viewed by anyone on the blockchain. This transparency increases the credibility of the system, allowing users to participate with confidence because they can view and verify their transaction records and earnings at any time.
Security of smart contracts
1. Immutability
BitPower Loop DeFi's smart contracts cannot be changed once deployed. This immutability ensures the stability and reliability of the contract terms, and users do not need to worry about the rules being changed at will.
2. Automation and efficiency
The automated execution of smart contracts eliminates human errors and delays and improves the efficiency of the system. For example, in BitPower Loop, users' earnings are automatically transferred to their wallets after maturity without manual operation. This automation not only improves efficiency but also reduces operating costs.
3. Secure asset collateral
The BitPower Loop DeFi platform supports users to borrow and lend by providing collateral, and the smart contract automatically adjusts the interest rate and collateral value according to market conditions. This mechanism ensures the security of the lending process and reduces the risks of both borrowers and lenders.
Advantages of the yield mechanism
1. High yield
The yield offered by BitPower Loop is more attractive than traditional financial products. For example, users can get the following returns by providing liquidity on the platform:
1 day: 100.4%
7 days: 104%
14 days: 109.5%
28 days: 124%
This high rate of return has attracted a large number of users to participate, injecting sufficient liquidity into the platform.
2. Compound interest mechanism
BitPower Loop also provides a compound interest mechanism, and users can obtain higher annualized returns by continuously reinvesting. For example:
1 day: 429%
7 days: 773%
14 days: 1065%
28 days: 1638%
This compound interest mechanism significantly increases users' long-term returns, further enhancing the attractiveness of the platform.
3. Referral rewards
BitPower Loop has designed a complete referral reward mechanism, and users can get additional benefits by inviting friends to join the platform. The specific reward structure is as follows:
First-generation friends: 20%
Second-generation friends: 10%
Third to seventh-generation friends: 5%
Eighth to tenth-generation friends: 3%
Eleventh to seventeenth-generation friends: 1%
This multi-level referral reward mechanism encourages users to actively promote the platform and help the platform quickly expand its user base.
Advantages of user experience
1. Simple and easy to use
BitPower Loop's platform interface design is simple and intuitive, and the operation process is simple and clear. Whether it is a novice or an experienced user, you can easily get started and quickly complete operations such as lending and liquidity provision.
2. Global services
BitPower Loop DeFi platform supports global user participation, and users do not need to worry about geographical restrictions. The platform's smart contracts are completely decentralized, and users anywhere in the world can fairly participate and enjoy the financial services provided by the platform.
3. Zero handling fees
BitPower Loop does not charge any platform commissions or additional fees, and all participants can use the platform's services for free. This zero-handling fee design further reduces the user's participation cost and increases user stickiness.
Conclusion
As an innovative decentralized financial platform, BitPower Loop DeFi has significant advantages in decentralization, smart contract security, profit mechanism and user experience. By eliminating intermediaries, providing high transparency and security, designing high-yield and compound interest mechanisms, and optimizing user experience, BitPower Loop provides users with an efficient, secure and attractive financial service platform. In the future, with the continuous development and popularization of blockchain technology, BitPower Loop DeFi is expected to attract more users worldwide and promote the development of decentralized finance.
| wot_ee4275f6aa8eafb35b941 |
1,907,530 | Django QuerySets Are Lazy | Introduction When working with Django's ORM, one of the fundamental aspects you'll... | 0 | 2024-07-02T08:08:37 | https://dev.to/doridoro/django-querysets-are-lazy-l01 | ## Introduction
When working with Django's ORM, one of the fundamental aspects you'll encounter is the laziness of QuerySets. This characteristic significantly impacts how you write and optimize your code. But what does it mean to say that "Django QuerySets are lazy"? Let's explore this concept, and understand the implications it has on our code.
#### Laziness of QuerySets
In Django, a QuerySet represents a collection of database queries, but it doesn't actually hit the database until the results are needed. This is what laziness refers to: the QuerySet is created, but no database query is executed until you "evaluate" the QuerySet.
QuerySets are evaluated only when you:
- Iterate over them
- Convert them to a list
- Slicing
- Pickle or cache them
- Call methods that require database access, such as `.exists()`, `.first()`, or `.count()`
### Practical Example: Validating Emails in a Form
Let's consider an example where you need to validate an email field in a Django form. You're tasked with checking if an email address is blacklisted. Here are two ways to achieve this:
```python
def clean_email(self):
email = self.cleaned_data['email']
blacklisted_users = User.objects.filter(email__iexact=email)
user = blacklisted_users.filter(is_blacklisted=True).first()
if user:
raise forms.ValidationError(
_('This email address is blacklisted.')
)
return email
```
```python
def clean_email(self):
email = self.cleaned_data['email']
if User.objects.filter(email__iexact=email, is_blacklisted=True).exists():
raise forms.ValidationError(
_('This email address is blacklisted.')
)
return email
```
### Analyzing the Two Approaches
At first glance, these methods seem quite similar, but understanding how Django QuerySets work will highlight why the second one is more efficient.
#### Approach 1: Chained QuerySets
In this approach, two separate queries are constructed:
1. `blacklisted_users = User.objects.filter(email__iexact=email)`
2. `user = blacklisted_users.filter(is_blacklisted=True).first()`
When `if user:` is evaluated, only then does the second query hit the database. Despite being chained, each call essentially constructs a new QuerySet.
#### Approach 2: Single Query
The second approach directly chains the filters in one QuerySet:
1. `User.objects.filter(email__iexact=email, is_blacklisted=True).exists()`
Here, the database query is executed only when `.exists()` is called, making it more efficient. This approach consolidates the query, resulting in only one hit to the database.
### Importance of Lazy Evaluation
Both examples illustrate Django's lazy evaluation of QuerySets. The queries are not executed until they are absolutely needed:
- When `if user:` is evaluated in the first approach
- When `exists()` is called in the second approach
### Efficiency Comparison
Even though the first approach appears to split the filtering process into two steps, Django's lazy evaluation sees no difference. The query is executed only when the final result is needed. However, the second approach is more concise and potentially more optimized due to:
- Fewer lines of code
- Only one database call, which is often more efficient
### Conclusion
Django's lazy QuerySets enable deferred execution, allowing you to chain operations without immediate database hits. While the first approach segments the query into steps, the second approach is preferable for its clarity and efficiency. Understanding and taking advantage of lazy evaluation can lead to more efficient and readable code.
By grasping this concept, you can write more optimized Django applications, reducing unnecessary database queries and improving overall performance.
| doridoro | |
1,910,160 | UK Proofreaders Services | UK Proofreaders Services because their experineces in a range of feilds sectors, our editors can... | 0 | 2024-07-03T12:40:12 | https://dev.to/ukproofreaders/uk-proofreaders-services-511a | [UK Proofreaders Services](https://www.ukproofreaders.co.uk) because their experineces in a range of feilds sectors, our editors can guarantee that your work is not that only error free but also compliant with industry norms and expectation. | ukproofreaders | |
1,910,158 | Paper detailing BitPower Loop’s security | Security Research of BitPower Loop BitPower Loop is a decentralized lending platform based on... | 0 | 2024-07-03T12:39:10 | https://dev.to/wgac_0f8ada999859bdd2c0e5/paper-detailing-bitpower-loops-security-1kpi | Security Research of BitPower Loop
BitPower Loop is a decentralized lending platform based on blockchain technology, dedicated to providing users with safe, transparent and efficient financial services. Its core security comes from multi-level technical measures and mechanism design, which ensures the robust operation of the system and the security of user funds. This article will introduce the security of BitPower Loop in detail from five aspects: smart contract security, decentralized management, data and transaction security, fund security and risk control mechanism.
1. Smart Contract Security
Smart contracts are the core components of BitPower Loop, and their codes must undergo strict security audits before deployment. These audits are usually conducted by third-party independent security companies to ensure that there are no vulnerabilities or malicious code in the contract. In addition, the immutability of smart contracts means that once deployed, no one (including the development team) can modify its rules and logic, which fundamentally eliminates the possibility of malicious operations. All operations are automatically executed by smart contracts, avoiding the risk of human intervention and ensuring the fairness and consistency of system operation.
2. Decentralized Management
BitPower Loop eliminates the risks brought by single point failures and central control through decentralized management. The system has no central management agency or owner, and all transactions and operations are jointly verified and recorded by blockchain nodes distributed around the world. This decentralized structure not only improves the system's anti-attack capabilities, but also enhances transparency. Users can publicly view all transaction records, which increases trust in the system.
3. Data and transaction security
BitPower Loop uses advanced encryption technology to protect users' data and transaction information. All data is encrypted during transmission and storage to prevent unauthorized access and data leakage. The consensus mechanism of the blockchain ensures the validity and immutability of each transaction, eliminating the possibility of double payment and forged transactions. In addition, the automated execution of smart contracts also avoids delays and errors caused by human operations, ensuring the real-time and accuracy of transactions.
4. Fund security
The secure storage of user funds is an important feature of BitPower Loop. Funds are stored on the blockchain through smart contracts and maintained by nodes across the entire network. Distributed storage avoids the risk of fund theft caused by centralized storage. In addition, the user's investment returns and shared commissions are automatically allocated to the user's wallet address by the smart contract after the conditions are met, ensuring the timely and accurate arrival of funds.
5. Risk Control Mechanism
BitPower Loop effectively manages lending risks by setting collateral factors and liquidation mechanisms. The collateral factors are independently set according to market liquidity and asset value fluctuations to ensure system stability and lending security. When the value of the borrower's assets falls below a certain threshold, the liquidation mechanism is automatically triggered, ensuring the repayment of the borrower's debt and protecting the interests of the fund provider. In addition, the immutability and automatic execution characteristics of smart contracts further enhance the security and reliability of the system.
Conclusion
BitPower Loop achieves high security and stability through multi-level security measures and mechanism design. Its smart contracts are strictly audited and immutable, decentralized management eliminates single point failure risks, advanced encryption technology protects data and transaction security, distributed storage ensures fund security, and risk control mechanisms manage lending risks. These security features together build a reliable decentralized financial platform that provides users with secure, transparent and efficient financial services.
| wgac_0f8ada999859bdd2c0e5 | |
1,910,157 | Advantages of BitPower Loop DeFi | Introduction The rapid development of blockchain technology has brought revolutionary changes to the... | 0 | 2024-07-03T12:38:57 | https://dev.to/wot_dcc94536fa18f2b101e3c/advantages-of-bitpower-loop-defi-17kk | btc | Introduction
The rapid development of blockchain technology has brought revolutionary changes to the financial industry, and decentralized finance (DeFi) has become one of the important innovations. The BitPower Loop DeFi platform is a decentralized smart contract protocol based on the Ethereum Virtual Machine (EVM), which aims to provide efficient, secure and transparent financial services. This article will explore the advantages of BitPower Loop DeFi and analyze its advantages in decentralization, smart contract security, profit mechanism and user experience.
Advantages of decentralization
1. No intermediary intervention
BitPower Loop DeFi relies entirely on smart contracts to operate, without centralized management agencies or intermediaries. All transactions and operations are automatically executed by smart contracts, eliminating the risk of human intervention. This decentralized mechanism ensures the transparency and fairness of the system, and all participants operate according to the same rules.
2. Transparency and openness
All transaction records and smart contract codes are public and can be viewed by anyone on the blockchain. This transparency increases the credibility of the system, allowing users to participate with confidence because they can view and verify their transaction records and earnings at any time.
Security of smart contracts
1. Immutability
BitPower Loop DeFi's smart contracts cannot be changed once deployed. This immutability ensures the stability and reliability of the contract terms, and users do not need to worry about the rules being changed at will.
2. Automation and efficiency
The automated execution of smart contracts eliminates human errors and delays and improves the efficiency of the system. For example, in BitPower Loop, users' earnings are automatically transferred to their wallets after maturity without manual operation. This automation not only improves efficiency but also reduces operating costs.
3. Secure asset collateral
The BitPower Loop DeFi platform supports users to borrow and lend by providing collateral, and the smart contract automatically adjusts the interest rate and collateral value according to market conditions. This mechanism ensures the security of the lending process and reduces the risks of both borrowers and lenders.
Advantages of the yield mechanism
1. High yield
The yield offered by BitPower Loop is more attractive than traditional financial products. For example, users can get the following returns by providing liquidity on the platform:
1 day: 100.4%
7 days: 104%
14 days: 109.5%
28 days: 124%
This high rate of return has attracted a large number of users to participate, injecting sufficient liquidity into the platform.
2. Compound interest mechanism
BitPower Loop also provides a compound interest mechanism, and users can obtain higher annualized returns by continuously reinvesting. For example:
1 day: 429%
7 days: 773%
14 days: 1065%
28 days: 1638%
This compound interest mechanism significantly increases users' long-term returns, further enhancing the attractiveness of the platform.
3. Referral rewards
BitPower Loop has designed a complete referral reward mechanism, and users can get additional benefits by inviting friends to join the platform. The specific reward structure is as follows:
First-generation friends: 20%
Second-generation friends: 10%
Third to seventh-generation friends: 5%
Eighth to tenth-generation friends: 3%
Eleventh to seventeenth-generation friends: 1%
This multi-level referral reward mechanism encourages users to actively promote the platform and help the platform quickly expand its user base.
Advantages of user experience
1. Simple and easy to use
BitPower Loop's platform interface design is simple and intuitive, and the operation process is simple and clear. Whether it is a novice or an experienced user, you can easily get started and quickly complete operations such as lending and liquidity provision.
2. Global services
BitPower Loop DeFi platform supports global user participation, and users do not need to worry about geographical restrictions. The platform's smart contracts are completely decentralized, and users anywhere in the world can fairly participate and enjoy the financial services provided by the platform.
3. Zero handling fees
BitPower Loop does not charge any platform commissions or additional fees, and all participants can use the platform's services for free. This zero-handling fee design further reduces the user's participation cost and increases user stickiness.
Conclusion
As an innovative decentralized financial platform, BitPower Loop DeFi has significant advantages in decentralization, smart contract security, profit mechanism and user experience. By eliminating intermediaries, providing high transparency and security, designing high-yield and compound interest mechanisms, and optimizing user experience, BitPower Loop provides users with an efficient, secure and attractive financial service platform. In the future, with the continuous development and popularization of blockchain technology, BitPower Loop DeFi is expected to attract more users worldwide and promote the development of decentralized finance. | wot_dcc94536fa18f2b101e3c |
1,910,065 | How to run Llama model locally on MacBook Pro and Function calling in LLM -Llama web search agent breakdown | Easily install Open source Large Language Models (LLM) locally on your Mac with Ollama.On a basic M1... | 0 | 2024-07-03T12:36:13 | https://dev.to/selvapal/how-to-run-llama-model-locally-on-macbook-pro-and-function-calling-in-llm-llama-web-search-agent-breakdown-12dl | llm, genai, langchain, functioncalling | Easily install Open source Large Language Models (LLM) locally on your Mac with Ollama.On a basic M1 Pro Macbook with 16GB memory, this configuration takes approximately 10 to 15 minutes to get going. The model itself starts up in less than ten seconds after the setup is finished.
1. Go to >> https://ollama.com/download/mac and download the software for your OS
2.Open the Ollama application and Move to Applications
3.
```
ollama run llama3
```
Depending on your network speed, the download and build take ten to fifteen minutes to finish.It is operating properly if the browser displays "Ollama is running" after accessing http://localhost:11434.
```
(venv) admin@admins-MacBook-Pro selvapal % ollama run llama3
>>> list the climate chnage reasons
Here are some of the main reasons contributing to climate change:
1. **Greenhouse gases**: The burning of fossil fuels such as coal, oil, and gas releases carbon dioxide (CO2), methane (CH4), and other greenhouse gases into the atmosphere, trapping heat
and leading to global warming.
2. **Deforestation**: The clearance of forests for agriculture, urbanization, and logging reduces the ability of trees to absorb CO2, a key greenhouse gas, contributing to climate change.
3. **Land use changes**: Changes in land use, such as the conversion of natural habitats into agricultural lands or cities, can lead to increased emissions of greenhouse gases and loss of
carbon sequestration capabilities.
4. **Agriculture**: The production of meat, especially beef, and other animal products leads to increased methane emissions and deforestation for livestock grazing and feed crop
production.
5. **Industrial processes**: Industrial activities such as cement production, steel manufacturing, and chemical processing release large amounts of greenhouse gases into the atmosphere.
6. **Population growth**: As the global population grows, so does the demand for energy, food, and resources, leading to increased emissions and consumption.
7. **Consumption patterns**: The way we live our daily lives, including transportation, diet, and consumer choices, contributes to climate change through energy use, waste generation, and
resource depletion.
8. **Waste management**: Inadequate waste management practices, such as the disposal of plastic waste in landfills or oceans, can lead to methane emissions and contribute to climate
change.
9. **Fugitive emissions**: The extraction, processing, and transportation of fossil fuels can release large amounts of greenhouse gases into the atmosphere, often unnoticed or unreported.
10. **Aerosol emissions**: The burning of biomass, such as wood or agricultural waste, releases aerosols that can trap heat and contribute to climate change.
11. **Nitrous oxide (N2O) emissions**: Agricultural practices, such as fertilizer use and manure management, release N2O, a potent greenhouse gas.
12. **Chlorofluorocarbons (CFCs)**: The use of CFC-containing products, such as refrigerants and propellants, can lead to the destruction of stratospheric ozone and contribute to climate
change.
13. **Methane emissions from natural sources**: Natural sources, such as wetlands, rice paddies, and termites, release methane into the atmosphere, which contributes to climate change.
14. **Ocean fertilization**: The addition of nutrients to the ocean to stimulate phytoplankton growth can lead to increased CO2 absorption but also releases other greenhouse gases and
alters marine ecosystems.
15. **Geoengineering**: Large-scale engineering projects aimed at mitigating climate change, such as solar radiation management or carbon capture and storage, can have unintended
consequences and potentially exacerbate climate change.
These are some of the main reasons contributing to climate change. It's essential to understand these factors to develop effective strategies for reducing greenhouse gas emissions and
mitigating the impacts of climate change.
>>> Send a message (/? for help)
```
**Benchmark Llama3 performance**
```
admin@admins-MacBook-Pro ~ % git clone https://github.com/selvakumarsai/llm-benchmark.git
Cloning into 'llm-benchmark'...
remote: Enumerating objects: 28, done.
remote: Counting objects: 100% (28/28), done.
remote: Compressing objects: 100% (25/25), done.
remote: Total 28 (delta 12), reused 6 (delta 1), pack-reused 0
Receiving objects: 100% (28/28), 16.26 KiB | 555.00 KiB/s, done.
Resolving deltas: 100% (12/12), done.
admin@admins-MacBook-Pro ~ % cd llm-benchmark
admin@admins-MacBook-Pro llm-benchmark % pip install -r requirements.txt
Defaulting to user installation because normal site-packages is not writeable
Collecting ollama (from -r requirements.txt (line 1))
Downloading ollama-0.2.1-py3-none-any.whl.metadata (4.2 kB)
Requirement already satisfied: pydantic in /Users/admin/Library/Python/3.9/lib/python/site-packages (from -r requirements.txt (line 2)) (2.8.0)
Requirement already satisfied: httpx<0.28.0,>=0.27.0 in /Users/admin/Library/Python/3.9/lib/python/site-packages (from ollama->-r requirements.txt (line 1)) (0.27.0)
Requirement already satisfied: annotated-types>=0.4.0 in /Users/admin/Library/Python/3.9/lib/python/site-packages (from pydantic->-r requirements.txt (line 2)) (0.7.0)
Requirement already satisfied: pydantic-core==2.20.0 in /Users/admin/Library/Python/3.9/lib/python/site-packages (from pydantic->-r requirements.txt (line 2)) (2.20.0)
Requirement already satisfied: typing-extensions>=4.6.1 in /Users/admin/Library/Python/3.9/lib/python/site-packages (from pydantic->-r requirements.txt (line 2)) (4.6.2)
Requirement already satisfied: anyio in /Users/admin/Library/Python/3.9/lib/python/site-packages (from httpx<0.28.0,>=0.27.0->ollama->-r requirements.txt (line 1)) (4.4.0)
Requirement already satisfied: certifi in /Users/admin/Library/Python/3.9/lib/python/site-packages (from httpx<0.28.0,>=0.27.0->ollama->-r requirements.txt (line 1)) (2023.5.7)
Requirement already satisfied: httpcore==1.* in /Users/admin/Library/Python/3.9/lib/python/site-packages (from httpx<0.28.0,>=0.27.0->ollama->-r requirements.txt (line 1)) (1.0.5)
Requirement already satisfied: idna in /Users/admin/Library/Python/3.9/lib/python/site-packages (from httpx<0.28.0,>=0.27.0->ollama->-r requirements.txt (line 1)) (3.4)
Requirement already satisfied: sniffio in /Users/admin/Library/Python/3.9/lib/python/site-packages (from httpx<0.28.0,>=0.27.0->ollama->-r requirements.txt (line 1)) (1.3.1)
Requirement already satisfied: h11<0.15,>=0.13 in /Users/admin/Library/Python/3.9/lib/python/site-packages (from httpcore==1.*->httpx<0.28.0,>=0.27.0->ollama->-r requirements.txt (line 1)) (0.14.0)
Requirement already satisfied: exceptiongroup>=1.0.2 in /Users/admin/Library/Python/3.9/lib/python/site-packages (from anyio->httpx<0.28.0,>=0.27.0->ollama->-r requirements.txt (line 1)) (1.2.1)
Downloading ollama-0.2.1-py3-none-any.whl (9.7 kB)
Installing collected packages: ollama
Successfully installed ollama-0.2.1
admin@admins-MacBook-Pro llm-benchmark % python3.10 -m pip install ollama
Collecting ollama
Using cached ollama-0.2.1-py3-none-any.whl.metadata (4.2 kB)
Requirement already satisfied: httpx<0.28.0,>=0.27.0 in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from ollama) (0.27.0)
Requirement already satisfied: anyio in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from httpx<0.28.0,>=0.27.0->ollama) (4.4.0)
Requirement already satisfied: certifi in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from httpx<0.28.0,>=0.27.0->ollama) (2024.6.2)
Requirement already satisfied: httpcore==1.* in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from httpx<0.28.0,>=0.27.0->ollama) (1.0.5)
Requirement already satisfied: idna in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from httpx<0.28.0,>=0.27.0->ollama) (3.7)
Requirement already satisfied: sniffio in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from httpx<0.28.0,>=0.27.0->ollama) (1.3.1)
Requirement already satisfied: h11<0.15,>=0.13 in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from httpcore==1.*->httpx<0.28.0,>=0.27.0->ollama) (0.14.0)
Requirement already satisfied: exceptiongroup>=1.0.2 in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from anyio->httpx<0.28.0,>=0.27.0->ollama) (1.2.1)
Requirement already satisfied: typing-extensions>=4.1 in /Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages (from anyio->httpx<0.28.0,>=0.27.0->ollama) (4.12.2)
Using cached ollama-0.2.1-py3-none-any.whl (9.7 kB)
Installing collected packages: ollama
Successfully installed ollama-0.2.1
admin@admins-MacBook-Pro llm-benchmark % python3.10 benchmark.py --verbose --prompts "how to do organic farming"
Verbose: True
Skip models: []
Prompts: ['how to do organic farming']
Evaluating models: ['llama3:latest', 'gemma:latest']
Benchmarking: llama3:latest
Prompt: how to do organic farming
Organic farming is a type of agriculture that avoids the use of synthetic fertilizers, pesticides, and genetically modified organisms (GMOs). Instead, organic farmers rely on natural methods to control pests and diseases, and use compost and other natural amendments to improve soil fertility. Here are some key principles and practices of organic farming:
1. **Soil conservation**: Organic farmers focus on building healthy soil through the use of crop rotations, cover crops, and organic amendments like compost.
2. **Crop rotation**: Rotating crops helps to break disease cycles, improves soil structure, and increases biodiversity.
3. **Composting**: Composting is a key process in organic farming that turns waste into nutrient-rich fertilizer.
4. **Manure management**: Organic farmers use animal manure as a natural fertilizer and to improve soil health.
5. **Integrated pest management (IPM)**: Instead of relying on pesticides, organic farmers use IPM techniques like crop rotation, biological control, and cultural controls to manage pests.
6. **Cover cropping**: Planting cover crops in the off-season helps to prevent erosion, adds nutrients to the soil, and provides habitat for beneficial insects.
7. **Biodiversity conservation**: Organic farming aims to conserve biodiversity by promoting ecosystem services and supporting beneficial insects and microorganisms.
8. **Minimum tillage or no-till**: Reducing soil disturbance helps to preserve soil structure, reduce erosion, and promote soil biota.
9. **Organic amendments**: Using natural amendments like compost, manure, or green manure instead of synthetic fertilizers.
10. **Record keeping**: Organic farmers keep detailed records of their farming practices, including crop rotations, pest management, and soil health.
Some specific techniques used in organic farming include:
1. **Biodynamic agriculture**: A holistic approach that considers the moon's cycles and uses natural preparations to promote soil fertility and plant growth.
2. **Permaculture**: A design system that aims to create self-sustaining ecosystems by mimicking nature's patterns and relationships.
3. **Agroforestry**: Integrating trees into agricultural landscapes to improve soil health, reduce erosion, and increase biodiversity.
4. **Green manure**: Planting legumes or other cover crops to fix nitrogen in the soil and add organic matter.
5. **Crop rotation with legumes**: Incorporating legume crops like beans or peas into crop rotations to improve soil fertility.
To get started with organic farming, you can:
1. **Research local regulations**: Familiarize yourself with national and regional laws regarding organic farming practices and certifications.
2. **Start small**: Begin by converting a small portion of your land to organic methods and gradually scale up as you gain experience.
3. **Join an organic farm network**: Connect with other organic farmers, attend workshops, and share knowledge to learn from their experiences.
4. **Develop a business plan**: Create a plan for marketing and selling your organic products, including pricing and target markets.
5. **Monitor and adjust**: Continuously monitor your soil health, crop yields, and pest management strategies, and make adjustments as needed.
Remember that transitioning to organic farming takes time, patience, and dedication. Start by making small changes and gradually build up your knowledge and skills.Response:
----------------------------------------------------
llama3:latest
Prompt eval: 13.14 t/s
Response: 6.23 t/s
Total: 6.31 t/s
Stats:
Prompt tokens: 16
Response tokens: 654
Model load time: 2.06s
Prompt eval time: 1.22s
Response time: 105.04s
Total time: 108.32s
----------------------------------------------------
Benchmarking: gemma:latest
Prompt: how to do organic farming
```
**Function Calling - Llama web search agent breakdown**
Larger models like GPT4, Claude anthorpics are fine tune to be able to perform function calling and can attach tools like online search and decide they need to use the tools or not and execute the tools.
Smaller models like Olama need precise definition and routing.
Langchain enables you to define conditional routing techniques to create a directed graph flows in the form of a state machine.
1. The web research agent first goes through a routing step where it looks at the user's query and determines whether or not we need context.
2. This is the first llm call. If it determines that context is not needed, it goes to the generation step where it generates its final output.
3. If it determines that context is needed, it goes to a transform query state where it takes the user's initial question and optimises it for a web search.
4. The optimised search query then goes into the web search step , and all of the context from the web search step used to generate the final report.
First load the longchain dependencies
```
# Displaying final output format
from IPython.display import display, Markdown, Latex
# LangChain Dependencies
from langchain.prompts import PromptTemplate
from langchain_core.output_parsers import JsonOutputParser, StrOutputParser
from langchain_community.chat_models import ChatOllama
from langchain_community.tools import DuckDuckGoSearchRun
from langchain_community.utilities import DuckDuckGoSearchAPIWrapper
from langgraph.graph import END, StateGraph
# For State Graph
from typing_extensions import TypedDict
import os
```
Setup the environment variables
```
# Environment Variables
#os.environ["LANGCHAIN_TRACING_V2"] = "true"
os.environ["LANGCHAIN_API_KEY"] = "xxxxxxxxxxxxxxxxxx"
os.environ["LANGCHAIN_PROJECT"] = "L3 Research Agent"
```
Next define the LLM
```
# Defining LLM
local_llm = 'llama3'
llama3 = ChatOllama(model=local_llm, temperature=0)
llama3_json = ChatOllama(model=local_llm, format='json', temperature=0)
```
Install websearch api
```
pip install -U duckduckgo-search
```
```
# Web Search Tool
wrapper = DuckDuckGoSearchAPIWrapper(max_results=25)
web_search_tool = DuckDuckGoSearchRun(api_wrapper=wrapper)
```
Create the different prompts first for function call routing and to define nodes
First Generate report Prompt
```
# Generation Prompt
generate_prompt = PromptTemplate(
template="""
<|begin_of_text|>
<|start_header_id|>system<|end_header_id|>
You are an AI assistant for Research Question Tasks, that synthesizes web search results.
Strictly use the following pieces of web search context to answer the question. If you don't know the answer, just say that you don't know.
keep the answer concise, but provide all of the details you can in the form of a research report.
Only make direct references to material if provided in the context.
<|eot_id|>
<|start_header_id|>user<|end_header_id|>
Question: {question}
Web Search Context: {context}
Answer:
<|eot_id|>
<|start_header_id|>assistant<|end_header_id|>""",
input_variables=["question", "context"],
)
# Chain
generate_chain = generate_prompt | llama3 | StrOutputParser()
```
Second define Router prompt
```
# Router
router_prompt = PromptTemplate(
template="""
<|begin_of_text|>
<|start_header_id|>system<|end_header_id|>
You are an expert at routing a user question to either the generation stage or web search.
Use the web search for questions that require more context for a better answer, or recent events.
Otherwise, you can skip and go straight to the generation phase to respond.
You do not need to be stringent with the keywords in the question related to these topics.
Give a binary choice 'web_search' or 'generate' based on the question.
Return the JSON with a single key 'choice' with no premable or explanation.
Question to route: {question}
<|eot_id|>
<|start_header_id|>assistant<|end_header_id|>
""",
input_variables=["question"],
)
# Chain
question_router = router_prompt | llama3_json | JsonOutputParser()
# Test Run
question = "What's up?"
print(question_router.invoke({"question": question}))
```
{'choice': 'generate'}
Third, Define Query transformation prompt to transform the user query to optimised query for websearch state
```
# Query Transformation
query_prompt = PromptTemplate(
template="""
<|begin_of_text|>
<|start_header_id|>system<|end_header_id|>
You are an expert at crafting web search queries for research questions.
More often than not, a user will ask a basic question that they wish to learn more about, however it might not be in the best format.
Reword their query to be the most effective web search string possible.
Return the JSON with a single key 'query' with no premable or explanation.
Question to transform: {question}
<|eot_id|>
<|start_header_id|>assistant<|end_header_id|>
""",
input_variables=["question"],
)
# Chain
query_chain = query_prompt | llama3_json | JsonOutputParser()
# Test Run
question = "What's happened recently with Tesla?"
print(query_chain.invoke({"question": question}))
```
{'query': 'Tesla recent news'}
**Define the Graph state and Nodes for the conditional routing **
```
# Graph State
class GraphState(TypedDict):
"""
Represents the state of our graph.
Attributes:
question: question
generation: LLM generation
search_query: revised question for web search
context: web_search result
"""
question : str
generation : str
search_query : str
context : str
# Node - Generate
def generate(state):
"""
Generate answer
Args:
state (dict): The current graph state
Returns:
state (dict): New key added to state, generation, that contains LLM generation
"""
print("Step: Generating Final Response")
question = state["question"]
context = state["context"]
# Answer Generation
generation = generate_chain.invoke({"context": context, "question": question})
return {"generation": generation}
# Node - Query Transformation
def transform_query(state):
"""
Transform user question to web search
Args:
state (dict): The current graph state
Returns:
state (dict): Appended search query
"""
print("Step: Optimizing Query for Web Search")
question = state['question']
gen_query = query_chain.invoke({"question": question})
search_query = gen_query["query"]
return {"search_query": search_query}
# Node - Web Search
def web_search(state):
"""
Web search based on the question
Args:
state (dict): The current graph state
Returns:
state (dict): Appended web results to context
"""
search_query = state['search_query']
print(f'Step: Searching the Web for: "{search_query}"')
# Web search tool call
search_result = web_search_tool.invoke(search_query)
return {"context": search_result}
# Conditional Edge, Routing
def route_question(state):
"""
route question to web search or generation.
Args:
state (dict): The current graph state
Returns:
str: Next node to call
"""
print("Step: Routing Query")
question = state['question']
output = question_router.invoke({"question": question})
if output['choice'] == "web_search":
print("Step: Routing Query to Web Search")
return "websearch"
elif output['choice'] == 'generate':
print("Step: Routing Query to Generation")
return "generate"
```
**Define and compile workflow **
```
# Build the nodes
workflow = StateGraph(GraphState)
workflow.add_node("websearch", web_search)
workflow.add_node("transform_query", transform_query)
workflow.add_node("generate", generate)
# Build the edges
workflow.set_conditional_entry_point(
route_question,
{
"websearch": "transform_query",
"generate": "generate",
},
)
workflow.add_edge("transform_query", "websearch")
workflow.add_edge("websearch", "generate")
workflow.add_edge("generate", END)
# Compile the workflow
local_agent = workflow.compile()
```
**Finally define the agent to run the query **
```
def run_agent(query):
output = local_agent.invoke({"question": query})
print("=======")
display(Markdown(output["generation"]))
```
**Test the different flows **
```
# Test it out!
run_agent("What's been up with Tesla recently?")
```
Step: Routing Query
Step: Routing Query to Web Search
Step: Optimizing Query for Web Search
Step: Searching the Web for: "Tesla recent news"
Step: Generating Final Response
Based on the provided web search context, here's what's been up with Tesla recently:
Tesla is reportedly preparing to build a $25,000 electric car built on its next-generation engineering platform.
Elon Musk has announced that Tesla will launch new EVs in 2025, including affordable ones, which will blend current and next-generation platforms.
The company has set a goal to start production of a new mass-market electric vehicle codenamed "Redwood" in mid-2025.
Tesla has produced its 20 millionth 4680 cell at Gigafactory Texas, a key step for its new vehicle programs. The 4680 cell is designed to reduce battery cost by over 50% and has a capacity of about 100 Wh.
Tesla reported first-quarter adjusted earnings per share of $0.45, below the estimated $0.52, on revenue of $21.30 billion, which missed forecasts for $22.3 billion.
The company set a new delivery record for the fourth quarter and met its 2023 delivery target, shaking off a third-quarter miss and assuaging investors concerned with any hiccups as it prepares to launch new products.
Tesla has issued two recalls on the Cybertruck, its third and fourth since the model was introduced late last year. The latest recall affects almost all of the nearly 12,000 trucks on the road.
The company is currently testing approximately 35 trucks for its long-range Semi, which will have a range of up to 500 miles.
Tesla's stock rose as much as 4.5% on Tuesday after the company delivered a record number of vehicles in the three months to the end of June.
Overall, it seems that Tesla is preparing to launch new products and expand its offerings, including affordable electric cars and long-range Semi trucks. The company has also faced some challenges, including recalls and missed earnings estimates, but has managed to set new delivery records and meet its 2023 delivery target.
```
# Test it out!
run_agent("How are you doing today?")
```
Step: Routing Query
Step: Routing Query to Generation
Step: Generating Final Response
I'm just an AI, I don't have feelings or emotions like humans do. I am functioning properly and ready to assist with any research questions you may have. I don't have personal experiences or opinions, so I won't be able to provide a subjective assessment of my "mood" or "well-being."
Ref : https://www.youtube.com/watch?v=-lnR9oU0Jl8&t=0s | selvapal |
1,910,154 | Describe and Discuss correlation and regression | Correlation evaluates the degree and direction of a linear relationship between two variables, with... | 0 | 2024-07-03T12:33:40 | https://dev.to/durga_trainer_98594e47328/describe-and-discuss-correlation-and-regression-268c | programming, datascience, database, datastructures | Correlation evaluates the degree and direction of a linear relationship between two variables, with values ranging from -1 (perfect negative) to +1 (perfect positive). It is assessed using a correlation coefficient.
Regression, especially linear regression, is the process of modelling the connection between a dependent variable and one or more independent variables. It presents an equation (y = mx + b) that predicts the dependent variable based on the independent variables. Correlation suggests relationship, whereas regression implies causality and anticipates results.
Correlation assesses relationships, whereas regression allows for prediction and causal conclusions.
SAS Clinical Online Course India, SAS Clinical Training Institute (saspowerbisasonlinetraininginstitute.in)
| durga_trainer_98594e47328 |
1,910,153 | Driving Innovation: Plastic Masterbatch Manufacturers Leading the Way | Plastic masterbatch manufacturers, as their name suggests, are companies that innovate in the fields... | 0 | 2024-07-03T12:32:37 | https://dev.to/kamila_bullockz_a15641e8e/driving-innovation-plastic-masterbatch-manufacturers-leading-the-way-23dn | design | Plastic masterbatch manufacturers, as their name suggests, are companies that innovate in the fields of coloring plastics. These are the ones that by using special pigments and additives, give a color to plastic products better than most. These manufacturers are essential to the operation of the industry by saving money and reducing waste for plastic manufacturers. They make sure that the colors in plastics are as bright and vivid or of top notch colour masterbatch quality when it comes to using technology.
The manufacturers are the cornerstone of innovation. They always work to release new colors and improve the overall quality of their products. They also are responsible about making plastics environmentally safer. For example, by using natural materials like bamboo and rice hulls in what they manufacture shows that the company is working towards sustainability issues as well as minimizing oil consumption which today in liberal terms means find every other source of power while coal kills us all.
Safety is the foremost aspect in plastics. Indeed, manufacturers have gone to great lengths in their own right to make the devices safer. We can find their advances in substances like biodegradable plastics," she continues, "which are materials that quickly disintegrate after being disposed of and have great potential to produce sustainable products with the contribution of saving our environment.
Plastic is utilized throughout a number of sectors which range from packaging in order to building. The most important is masterbatches used in manufacturing of plastics, which are the basic need in these sectors because to produce products with durability and versatility that meet all kinds of needs they use specific types of plastic. They have been applied in all sorts of things from household appliances to automotive parts, playthings and many other white masterbatches products.
The use of plastic masterbatch is different and this involves the addition to raw polymer during manufacturing a process. This process is a necessary evil as it ensures the pigments and additives are thoroughly distributed within the plastic, creating one flawless tidal wave of colour.
The choice of trusted plastic masterbatch manufacturer is essential. It is also important to consider the range of customer service features and quality that a vending machine manufacturer offers. This means that by opting for well-known manufacturer products, you can rest assured in the knowledge that these plastics are tested to industry standards and have a level of plastic masterbatches quality not found elsewhere.
The plastic industry is a continuously evolving market as the demand for new and safe plastic solutions are on its peak. Manufacturers of plastic masterbatch are key in fulfilling this demand and advancing the industry. To a great extent, their endeavors have brought remarkable success in all sectors and significantly improved the quality of plastics on the level of safety as well! The more calls for greener plastic replacements, the likelier these manufacturers are going to continue setting the standards of innovation and sustainability throughout its manufacturing processes. | kamila_bullockz_a15641e8e |
1,910,151 | Introduction to Business Analytics | Business analytics is the sophisticated practice of exploring organizational data to derive... | 0 | 2024-07-03T12:31:59 | https://dev.to/durga_trainer_98594e47328/introduction-to-business-analytics-24if | data, clinical, programming, sass | Business analytics is the sophisticated practice of exploring organizational data to derive actionable insights through statistical analysis. It involves leveraging historical and real-time data, employing advanced statistical techniques, and using predictive models to inform strategic decision-making and drive business outcomes.
The introduction of business analytics represents a transformative shift from traditional business intelligence. While traditional methods typically focus on descriptive analysis—explaining what has happened—business analytics delves deeper with predictive and prescriptive analysis. This enables organizations not only to forecast future trends but also to determine the best actions to optimize results.
Core components of business analytics include data mining, data aggregation, data modelling, and the application of advanced algorithms and statistical methods. Cutting-edge tools and technologies, such as data visualization, predictive modelling, and machine learning, are instrumental in extracting valuable insights from extensive datasets.
In practice, business analytics is indispensable across various domains including finance, marketing, supply chain management, and human resources. By harnessing business analytics, organizations can enhance decision-making processes, improve operational efficiency, uncover new market opportunities, and maintain a competitive edge.
Ultimately, business analytics transforms raw data into strategic intelligence. It empowers organizations to make informed, proactive decisions, fostering a data-driven culture that is essential for navigating the complexities of today's business environment.
SAS Clinical Online Course India, SAS Clinical Training Institute (saspowerbisasonlinetraininginstitute.in)
| durga_trainer_98594e47328 |
1,910,150 | Transformer is not a constructor React Native | error occurs when i launch app using npx react-native run-android it shows like | 0 | 2024-07-03T12:31:25 | https://dev.to/boss_rs_3bb893be31f75f98e/transformer-is-not-a-constructor-react-native-3l0i | reactnative, programming, react | error occurs when i launch app using npx react-native run-android it shows like
 | boss_rs_3bb893be31f75f98e |
1,910,149 | Mastering BI Dashboards for Business Success | Introduction In today's data-driven world, business intelligence (BI) dashboards are... | 0 | 2024-07-03T12:29:27 | https://dev.to/sejal_4218d5cae5da24da188/mastering-bi-dashboards-for-business-success-3gi2 | data, dataanalytics, businessintelligence | ## Introduction
In today's data-driven world, business intelligence (BI) dashboards are pivotal in transforming raw data into actionable insights. These powerful tools enable organizations to make informed decisions, enhance performance, and stay competitive. This blog explores how advanced BI dashboards can maximize business performance and the key features to look for in a robust dashboard solution.
## The Power of Business Intelligence Dashboards
BI dashboards consolidate data from various sources into a single, coherent view. This integration allows businesses to:
**• Monitor KPIs in Real-Time**: Real-time data monitoring ensures that key performance indicators (KPIs) are tracked continuously, providing immediate insights into business health and performance.
**• Identify Trends and Patterns**: Dashboards help in spotting trends and patterns, enabling proactive decision-making and strategic planning.
**• Enhance Data Accessibility**: Centralizing data from disparate sources improves accessibility, allowing stakeholders across the organization to view and analyze relevant data easily.
## Key Features of Advanced BI Dashboards
## 1. Customization and Flexibility
**o Tailored Views**: The ability to customize dashboard views to meet specific user needs is essential. Tailored views ensure that each stakeholder can focus on the most relevant data for their role.
**o Interactive Elements**: Features like drill-downs, filters, and dynamic charts enable users to interact with data, facilitating deeper analysis.
## 2. Real-Time Data Integration
**o Live Data Feeds**: Integrating real-time data feeds ensures that the dashboard reflects the most current information, allowing for timely decision-making.
**o Automated Updates**: Automated data updates reduce the risk of errors and ensure that all users have access to the latest data without manual intervention.
## 3. Advanced Analytics and Predictive Capabilities
**o Machine Learning Integration**: Incorporating machine learning algorithms can enhance predictive analytics, helping businesses forecast future trends and make data-driven predictions.
**o Advanced Statistical Tools**: Tools for advanced statistical analysis allow users to perform complex calculations and derive deeper insights from their data.
## 4. User-Friendly Interface
**o Intuitive Design**: A user-friendly interface ensures that users of all technical levels can navigate the dashboard and interpret data effectively.
**o Responsive Layouts**: Dashboards should be accessible on various devices, including desktops, tablets, and smartphones, to support remote and on-the-go access.
## 5. Security and Data Governance
**o Role-Based Access Control**: Implementing role-based access ensures that sensitive data is only accessible to authorized users, maintaining data security and compliance.
**o Audit Trails**: Keeping audit trails of data access and changes helps in maintaining transparency and accountability within the organization.
## Implementing BI Dashboards for Maximum Impact
To leverage BI dashboards effectively, businesses should:
**• Define Clear Objectives**: Establish clear objectives for what the dashboard should achieve, aligning it with business goals and KPIs.
**• Ensure Data Quality**: High-quality, accurate data is crucial for reliable insights. Implement data cleaning and validation processes to maintain data integrity.
**• Train Users**: Providing training for users ensures they can fully utilize the dashboard’s features and interpret the data correctly.
**• Continuously Improve**: Regularly review and update the dashboard to incorporate user feedback, new data sources, and evolving business needs.
## Conclusion
Advanced BI dashboards are invaluable tools for maximizing business performance. By integrating real-time data, offering customizable views, and providing advanced analytics, these dashboards empower organizations to make informed decisions and stay competitive.
For a deeper dive into how business intelligence dashboards can unlock success for your organization, read our detailed blog on [Unlocking Success with Business Intelligence Dashboards](https://www.pangaeax.com/2023/11/04/unlocking-success-with-business-intelligence-dashboards/).
| sejal_4218d5cae5da24da188 |
1,910,148 | Understanding the Token Bucket Algorithm | Introduction The Token Bucket algorithm is a popular mechanism used for network traffic shaping and... | 0 | 2024-07-03T12:29:22 | https://dev.to/keploy/understanding-the-token-bucket-algorithm-5800 | webdev, javascript, beginners, tutorial |
Introduction
The Token Bucket algorithm is a popular mechanism used for network traffic shaping and rate limiting. It controls the amount of data transmitted over a network, ensuring that traffic conforms to specified rates and preventing congestion. This article provides an in-depth look at the Token Bucket algorithm, its working principles, use cases, and implementation details.
What is the Token Bucket Algorithm?
The [Token Bucket](https://keploy.io/blog/community/create-api-rate-limiting-with-token-bucket) algorithm is a method for regulating data flow in a network. It controls the rate at which data packets are sent by using tokens, which represent the permission to send a certain amount of data. Tokens are added to the bucket at a fixed rate, and to send a packet, the bucket must have a sufficient number of tokens. This allows for bursty traffic patterns while maintaining an average rate over time.
How the Token Bucket Algorithm Works
1. Tokens and the Bucket: The bucket has a fixed capacity and holds tokens. Tokens are generated and added to the bucket at a constant rate, typically one token per unit of time.
2. Sending Packets: Each data packet requires a certain number of tokens to be sent. If the bucket has enough tokens, the packet is sent, and the corresponding tokens are removed from the bucket. If there aren't enough tokens, the packet is either queued until tokens are available or dropped, depending on the implementation.
3. Token Accumulation: If tokens are not used immediately, they accumulate in the bucket up to its maximum capacity, allowing for bursty traffic. Once the bucket is full, any additional tokens are discarded until some tokens are consumed.
4. Regulating Rate: By controlling the rate at which tokens are added and the maximum bucket capacity, the algorithm regulates the average data transmission rate and allows for short-term bursts.
Key Parameters of the Token Bucket Algorithm
1. Token Generation Rate (r): The rate at which tokens are added to the bucket, typically measured in tokens per second.
2. Bucket Capacity (b): The maximum number of tokens the bucket can hold, determining the size of the burst that can be accommodated.
3. Packet Size: The number of tokens required to send a packet. This can be fixed or variable depending on the packet size.
Advantages of the Token Bucket Algorithm
1. Flexibility: Supports both average rate control and bursty traffic, making it suitable for various applications.
2. Simplicity: Easy to implement and understand, with straightforward parameters.
3. Efficiency: Provides effective rate limiting with minimal overhead.
Use Cases of the Token Bucket Algorithm
1. Network Traffic Shaping: Controls the flow of data to prevent congestion and ensure smooth network performance.
2. Rate Limiting: Limits the rate of API requests, preventing abuse and ensuring fair usage.
3. Quality of Service (QoS): Guarantees a certain level of service by regulating traffic rates and prioritizing certain types of traffic.
4. Bandwidth Management: Allocates bandwidth to different users or applications based on predefined rates.
Implementing the Token Bucket Algorithm
Pseudocode Example
Here's a simple pseudocode example illustrating the Token Bucket algorithm:
pseudo
Copy code
initialize bucket with capacity b and rate r
current_tokens = b
last_checked_time = current_time()
function send_packet(packet_size):
current_time = current_time()
time_passed = current_time - last_checked_time
tokens_to_add = time_passed * r
current_tokens = min(b, current_tokens + tokens_to_add)
last_checked_time = current_time
if current_tokens >= packet_size:
current_tokens -= packet_size
send(packet)
return True
else:
return False
Python Implementation
Here's a Python implementation of the Token Bucket algorithm:
python
Copy code
import time
class TokenBucket:
def __init__(self, rate, capacity):
self.rate = rate
self.capacity = capacity
self.tokens = capacity
self.last_checked = time.time()
def get_tokens(self):
now = time.time()
time_passed = now - self.last_checked
self.tokens += time_passed * self.rate
if self.tokens > self.capacity:
self.tokens = self.capacity
self.last_checked = now
def consume(self, tokens):
self.get_tokens()
if self.tokens >= tokens:
self.tokens -= tokens
return True
return False
# Example usage
bucket = TokenBucket(rate=1, capacity=10)
def send_packet(packet_size):
if bucket.consume(packet_size):
print("Packet sent")
else:
print("Packet dropped")
# Simulate sending packets
send_packet(5)
time.sleep(1)
send_packet(5)
time.sleep(1)
send_packet(10)
Conclusion
The Token Bucket algorithm is a powerful tool for managing network traffic and enforcing rate limits. By allowing for controlled bursts and maintaining an average transmission rate, it provides a flexible and efficient way to regulate data flow. Understanding and implementing this algorithm can significantly enhance the performance and reliability of networked applications and services. | keploy |
1,910,147 | Master Clinical SAS at India's Best Online Training Institute | Unlock your potential in clinical data analysis with Durga Online Training Institute, Premier... | 0 | 2024-07-03T12:28:21 | https://dev.to/durga_trainer_98594e47328/master-clinical-sas-at-indias-best-online-training-institute-1fij | clinical, sass, database, data | Unlock your potential in clinical data analysis with Durga Online Training Institute, Premier destination for best clinical sas training institute in india . Gain a competitive edge in the healthcare industry with our comprehensive online courses. Our expert instructors will guide you through the intricacies of Clinical SAS, equipping you with the skills to handle real-world challenges.
Experience interactive virtual classes, hands-on projects, and personalized mentoring, all from the comfort of your home. Our industry-relevant curriculum, coupled with practical case studies, ensures you're job-ready upon completion. Join thousands of successful graduates who have excelled in their careers.
Elevate your prospects today. Enroll at Durga Online Training Institute, where excellence meets convenience.
https://forms.gle/R7AMfC5C9CGjdBm36
https://www.saspowerbisasonlinetraininginstitute.in/
| durga_trainer_98594e47328 |
1,910,073 | Automating Linux User Creation with Bash Scripting | Introduction: Streamlining the process of creating and managing multiples users account in an... | 0 | 2024-07-03T12:27:37 | https://dev.to/dev_sylvester/automating-linux-user-creation-with-bash-scripting-508d | aws, devops, linux, bash | Introduction:
Streamlining the process of creating and managing multiples users account in an organization where quite a number of developers have been recently onboarded can be very challenging for a SysOps engineer. Automating these tasks not only saves time but also ensures consistency and accuracy. This article will guide you through a Bash script that automates the process of creating users and groups on a Linux system. We will create a script that creates users and groups, sets passwords, and manages permissions. The script and article are part of the HNG Internship task, and you can learn more about the program by visiting the following links (https://hng.tech/internship) and (https://hng.tech/premium)
Script Breakdown
Prerequisites
Ensure that your system is authorized to create users, groups, and make changes to system files. To successfully run the script, you must have sudo access.
Script Overview:
# Set the log file and password file
```
LOG_FILE=/var/log/user_management.log
PASSWORD_FILE=/var/secure/user_passwords.txt
```
The script starts with a shebang (#!/bin/bash), indicating that it should be run in the Bash shell. It then sets the paths for the log file and the password file. These files will store logs of user creation actions and the generated passwords, respectively.
# Function to Create a User and Group
```
create_user() {
username=$1
groups=$2
# Create the user group
groupadd ${username}
# Create the user and set the password
useradd -m -g ${username} -G ${groups} ${username}
password=$(generate_password)
echo "${username}:${password}" | chpasswd
# Set ownership and permissions for the home directory
chown ${username}:${username} /home/${username}
chmod 700 /home/${username}
# Log the action
echo "Created user ${username} with groups ${groups}" >> ${LOG_FILE}
}
```
The create_user function takes two arguments: the username and the groups the user should belong to. It performs the following actions:
Creates a user-specific group with groupadd.
Creates the user with useradd, assigns the user to their own group, and any additional groups.
Generates a random password using the generate_password function and sets it for the user with chpasswd.
Sets the ownership and permissions of the user's home directory.
Logs the creation action to the specified log file.
# Function to Generate a Random Password
```
generate_password() {
< /dev/urandom tr -dc _A-Z-a-z-0-9 | head -c${1:-32}; echo
}
```
The generate_password function uses /dev/urandom to generate a stream of random characters, filters them to include only alphanumeric characters, and then extracts a password of a specified length (default is 32 characters).
# Reading the Input File
```
while IFS=';' read -r username groups; do
# Ignore whitespace
username=$(echo ${username} | tr -d '[:space:]')
groups=$(echo ${groups} | tr -d '[:space:]')
```
# Create the user and group
```
create_user ${username} ${groups}
done < "$1"
```
This section reads the input file line by line, splitting each line into the username and groups based on the semicolon (;) delimiter. It removes any whitespace from the username and groups, then calls the create_user function to create the user and their groups.
# Writing Passwords to the Password File
```
echo "Username,Password" > ${PASSWORD_FILE}
for user in $(cut -d: -f1 ${PASSWORD_FILE}); do
password=$(grep ${user} ${PASSWORD_FILE} | cut -d: -f2)
echo "${user},${password}" >> ${PASSWORD_FILE}
```
done
This part initializes the password file with a header (Username,Password), then iterates through each user, extracts their password from the log file, and writes it to the password file.
# Setting Permissions for the Password File
```
chmod 600 ${PASSWORD_FILE}
```
Finally, the script sets the permissions of the password file to 600, ensuring that only the file owner (root) can read it.
Usage:
To use this script, create a text file (users.txt) containing usernames and their respective groups in the format user;group1,group2,.... For example:
Lily_Johnson;hr,management
David_williams;sales,marketing
Grace_Paterson;it,developers
Run the script with the text file as an argument:
sudo bash create_users.sh users.txt
# Conclusion
This script automates the creation of users and groups, sets up home directories with appropriate permissions, generates random passwords, and logs all actions. By using this script, system administrators can efficiently manage user accounts, ensuring consistency and security.
By automating user management tasks, administrators can focus on more critical aspects of their work, improving overall system efficiency and security. This script serves as a robust foundation for further customization and integration into larger automation workflows. | dev_sylvester |
1,910,146 | Visual Studio Code 的工作區 (workspace) | Visual Studio Code 除了以單一資料夾為專案單位的方式以外, 如果你需要同時用到不同的資料夾, 也可以使用工作區 (workspace)。有些開發工具, 像是 PlatformIO... | 0 | 2024-07-03T12:27:20 | https://dev.to/codemee/visual-studio-code-de-gong-zuo-qu-workspace-1ojc | vscode | Visual Studio Code 除了以單一資料夾為專案單位的方式以外, 如果你需要同時用到不同的資料夾, 也可以使用[工作區 (workspace)](https://code.visualstudio.com/docs/editor/workspaces)。有些開發工具, 像是 PlatformIO 會強制在建立新專案的時候就建立工作區, 如果對工作區不瞭解, 一開始可能會被弄得暈頭轉向。
## 單一資料夾其實也是工作區
預設的情況下, 即使你沒有建立工作區, 開啟單一資料夾就形同是只有一個資料夾的工作區, 這時候完全不會感受到有**工作區**的存在, 但如果你開啟**設定**, 就會發現可以針對**使用者**或是**工作區**進行設定：
這裡的工作區指的就是你開啟的資料夾, **使用者**的設定是全域的, 而**工作區**的設定就只會影響目前開啟的資料夾, 會儲存在該資料夾下 .vscode/settings.json 中, 優先權大於全域的設定。
## 多資料夾的工作區 (multiple-root workspace)
以我自己的使用情境為例, 當我在測試使用 LangChain 框架的程式碼時, 我會把 LangChain 的原始檔複製下來方便除錯, 如果想要隨時查看 LangChain 的原始碼, 就可以把 LangChain 原始碼的資料夾也加入目前開啟的 Visual Studio Code 視窗中, 只要把 LangChain 的資料夾拖入左邊**檔案總管**窗格即可：
就會看到詢問是要將資料夾複製到目前開啟的資料夾中, 還是要將資料夾加入目前的工作區內。如果選擇**將資料夾新增至工作區**, 就會建立一個內含兩個資料夾的工作區：
你可以看到現在**檔案總管**理面有兩個資料夾, 而且最上面顯示**未命名 (工作區)**, 表示雖然建立工作區, 但沒有命名, 就跟你建立一個新檔案, 卻還沒有命名存檔一樣。
你也可以用『**檔案/將資料夾新增至工作區**』或是在**檔案總管**窗格中按滑鼠右鍵選**將資料夾新增到工作區**
如果你現在關閉 Visual Studio Code, 會看到這個交談窗：
詢問你要不要儲存工作區。如果不儲存, 剛剛加入工作區的結果就會消失, 下次若還需要對照看這兩個資料夾, 就要重新把資料夾加入工作區。如果選擇儲存, 會把工作區的設定儲存到副檔名為 .code-workspace 的檔案, 這個檔案可以自由命名、隨意儲存在任意位置。這裡我將他儲存為 test-langchain.code-workspace 檔。
之後, 如果你要重新開啟這個工作區, 只要使用 Visual Studio Code 開啟 .code-workspace 檔就可以了, 像是這樣：
```
# code .\test_langchain.code-workspace
```
或者也可以在 Visual Studio Code 中透過『**檔案/從檔案開啟工作區**』開啟 .code-workspace 檔。開啟後的工作區會長這樣：
剛剛存檔時的檔名就變成工作區的名稱了。
## 工作區與工作區內的資料夾專屬的設定
建立工作區後, 如果進入**設定**, 就會發現可以分別針對**使用者**、**工作區**、以及**資料夾**個別設定：
同樣項目的設定, **資料夾**的設定比**工作區**的設定優先, **工作區**的設定又比**使用者**的設定優先。工作區的設定會儲存在 .code-workspace 中。如此一來, 就可以針對需求設定了。
## 移除工作區內的資料夾
如果想要將資料夾從工作區中移除, 只要在左邊**檔案總管**窗格內在資料夾上按滑鼠郵件, 選**將資料夾從工作區中移除**即可。如果是移除工作區, 就只要把 .code-workspace 檔移除就可以了。
## 使用單一資料夾建立工作區
雖然開啟單一資料夾就形同是一個工作區, 但你可能會想要明確建立工作區, 甚至是幫同一個資料夾建立不同名稱的工作區, 這時每個工作區就等於是一個獨立的設定檔, 可以讓你依據不同需求使用對應的設定。
只要在開啟資料夾後, 透過『**檔案/另存工作區為...**』就可以建立一個工作區, 重複相同操作以不同名稱存檔, 就可以為同一個資料夾建立多個工作區了。 | codemee |
1,910,145 | Enhance Your Factory Car Radio's Bass with Affordable Upgrades | Factory-installed radios or navigation systems in vehicles often lack RCA outputs on the rear panel.... | 0 | 2024-07-03T12:27:15 | https://dev.to/lucas_harry_cbe392dbc31b9/enhance-your-factory-car-radios-bass-with-affordable-upgrades-2meh | car, radio, factory | Factory-installed radios or navigation systems in vehicles often lack RCA outputs on the rear panel. This can be a significant hurdle for car owners who wish to upgrade their standard sound systems to enjoy richer bass, enhancing the overall enjoyment of their music. The traditional approach of integrating an optional amplifier and subwoofer with an enclosure requires extensive wiring and RCA outputs typically found only on aftermarket radios. This is where active subwoofers come into play. Here, we present three models that provide substantial bass improvement without breaking the bank.
## Seamless Integration with High-Level Inputs
Active subwoofers offer a convenient solution for enhancing bass in your car's audio system, especially when dealing with factory-installed radios that lack RCA outputs. These subwoofers come equipped with high-level inputs, allowing them to connect directly to the speaker outputs of your factory radio. This eliminates the need for complex wiring and additional adapters, making the installation process straightforward and efficient. With high-level input compatibility, active subwoofers can seamlessly integrate into your existing setup, delivering powerful bass without the need for extensive modifications.
## 1. Audison APBX10-AS2 Active Subwoofer
The Audison APBX10-AS2 is a 10-inch active subwoofer delivering 800 watts of peak power, ideal for enhancing the bass quality in your vehicle. This subwoofer is perfect for complementing factory radios due to its built-in amplifier and compact size. The 25cm subwoofer features high-low and RCA inputs, making it compatible with factory radios and navigation systems. It has been awarded the ELSA Award for its performance.
· Component: Active Sub Box
· Subwoofer Size: 250 mm (10 inches)
· Voice Coil Diameter: 60 mm (2.36 inches)
· Peak Power: 800 Watts
· RMS Continuous Power: 400 Watts
· Impedance: 0.16 Ohms
· Sub Box Dimensions: 460 mm x 158 mm x 338 mm (18.11 inches x 6.22 inches x 13.31 inches)
· Weight: 9.4 kg (20.72 lbs)
· Magnet: High-density flux ferrite
· Cone: Water-repellent pressed paper
· Additional Features: Bass remote control HRC AP
## 2. Hertz DBA201-F Active Subwoofer
Discover the Hertz DBA201-F, a 20cm flat active subwoofer with a powerful 440-watt Class D amplifier. This subwoofer is designed for optimal performance and minimal power consumption, making it suitable for both OEM and aftermarket systems. Its plug-and-play connectivity allows for quick installation, and its compact under-seat design is perfect for saving space.
· High Power in a Super Flat Design
· Internal 440-Watt Class D Amplifier
· Compatible with Any Car Sound System
· Plug & Play Connection
· Comprehensive Set of Controls for Fine-Tuning Performance
· Automatic Turn-On and Standby Mode
· Includes Remote Control for Level Adjustment
## 3. CALIBER BC121US – 8-Inch Under-Seat Subwoofer
The CALIBER BC121US is the most affordable subwoofer in this lineup, featuring an 8-inch subwoofer with a built-in amplifier delivering 100 watts RMS. Its compact size allows it to fit easily under a seat, making it an excellent choice for those with limited space.
· Active Under-Seat Subwoofer
· Built-In Amplifier
· 500 Watts Max / 100 Watts RMS
· Dimensions: 29 cm x 21 cm x 7.2 cm (11.42 inches x 8.27 inches x 2.83 inches)
· Wired Remote Control (5 m)
· Includes Fused Connection Material
· RCA Input: 130 mV – 2 V
· Frequency Range: 50 Hz – 150 Hz
· Phase Switch: 0/180 Degrees
· Bass Boost: 0-12 dB at 45 Hz
## Enjoy Superior Sound
If you enjoy listening to your favorite songs during your drives, good sound is a must. Adding a subwoofer to your audio system significantly enhances the bass tones in your music, allowing you to enjoy the best sound experience on every trip. For installation tips and expert opinions, visit our [Auto Lautsprecher Einbautipps](https://auto-lautsprecher.eu/einbautipps/) guide.
## Why Choose auto-lautsprecher.eu?
At auto-lautsprecher.eu, we understand the importance of high-quality components and vehicle-specific solutions. As a specialist dealer for major brands such as Audison, Hertz, JL Audio, and STP Standardplast, we provide top-tier products for our customers. We also collaborate with manufacturers like Connects2, offering a wide range of adapters for steering wheel controls, enabling the use of aftermarket radios with your car's multifunction steering wheel. Additionally, we offer various radio fascia panels for numerous vehicle models, ensuring seamless integration and a professional look.
## Trusted Austrian Online Shop
As a trusted Austrian online shop, we are proud members of the Austrian Chamber of Commerce. Our commitment to quality and customer satisfaction has made us a leading expert in car audio solutions across the European market. We sell our products on platforms like Geizhals.at and Idealo.de, ensuring that customers across Europe can access our high-quality sound system upgrades.
## Upgrade Your Car's Sound System Today
Upgrade your car's sound system today and enjoy the best in audio quality with our premium products. Visit our website [Auto Lautsprecher Testsieger](https://auto-lautsprecher.eu/) at auto-lautsprecher.eu to explore our full range of car audio solutions, find detailed installation guides, and take advantage of our expert tips. With our high-quality products and comprehensive support, you can transform your car's audio experience and enjoy premium sound on every drive.
| lucas_harry_cbe392dbc31b9 |
1,910,144 | Understanding the Difference: Appreciating vs Depreciating Assets | Appreciating vs Depreciating Assets: A Key Distinction in Financial Planning In the realm of... | 0 | 2024-07-03T12:25:05 | https://dev.to/cesarwatkins/understanding-the-difference-appreciating-vs-depreciating-assets-1llf | <h3><strong>Appreciating vs Depreciating Assets: A Key Distinction in Financial Planning</strong></h3>
<p><span style="font-weight: 400;">In the realm of financial planning and investment, distinguishing between appreciating and depreciating assets is crucial for maximizing returns and minimizing risks. </span><strong>Appreciating assets</strong><span style="font-weight: 400;"> are those that typically increase in value over time, such as real estate in growing markets, stocks of successful companies, or collectibles with high demand. These assets tend to yield positive returns and can enhance your net worth over the long term.</span></p>
<p><span style="font-weight: 400;">On the other hand, </span><strong>depreciating assets</strong><span style="font-weight: 400;"> are prone to lose value over time or with use. Examples include vehicles, certain types of machinery, or technology that becomes obsolete quickly. While depreciating assets may provide immediate utility or enjoyment, they generally do not appreciate in value and can lead to financial losses if not managed carefully.</span></p>
<h3><strong>The Dynamics of Appreciating vs Depreciating Assets</strong></h3>
<p><span style="font-weight: 400;">Investors often prioritize appreciating assets due to their potential for capital growth. Real estate, for instance, can appreciate significantly in booming markets or desirable locations, offering both rental income and appreciation in property value. Stocks of established companies with strong earnings growth and dividends also fall under appreciating assets, providing investors with income and potential capital gains.</span></p>
<p><span style="font-weight: 400;">Conversely, depreciating assets require careful consideration in financial planning. While they may serve essential purposes, such as transportation or operational needs in businesses, their value tends to decline over time. Managing depreciating assets involves assessing their useful life, maintenance costs, and potential resale value, if any, to minimize financial losses.</span></p>
<h3><strong>Conclusion</strong></h3>
<p><span style="font-weight: 400;">In conclusion, understanding the distinction between appreciating and depreciating assets is fundamental to making informed financial decisions. </span><a href="https://www.thefreefinancialadvisor.com/appreciating-vs-depreciating-assets/"><strong>Appreciating vs Depreciating Assets</strong></a><span style="font-weight: 400;"> can significantly impact your wealth accumulation strategies and risk management approaches. By prioritizing appreciating assets in your portfolio and managing depreciating assets wisely, you can enhance your financial stability and long-term growth potential.</span></p> | cesarwatkins | |
1,910,143 | The Periodic Table of AI Tools | I recently came across an interesting image called 'The Periodic Table of AI Tools.' Out of... | 0 | 2024-07-03T12:24:42 | https://dev.to/jottyjohn/the-periodic-table-of-ai-tools-40ge | ai | I recently came across an interesting image called 'The Periodic Table of AI Tools.' Out of curiosity, I searched for it and found a couple of articles. I thought I would share the links here for anyone who is interested. There are many more.. Have a look!
[(https://gemmo.ai/the-periodic-table-of-deep-learning-ai-guide)]
[https://digital.ai/learn/devsecops-periodic-table/]
[https://www.coursera.org/resources/periodic-table-of-artificial-intelligence-principles]
| jottyjohn |
1,910,140 | WhatsApp's AI Selfie Generator: A New Frontier in Self-Expression or a Superficial Gimmick? | Meta's WhatsApp is on the cusp of a significant transformation with the introduction of its... | 0 | 2024-07-03T12:24:08 | https://dev.to/hyscaler/whatsapps-ai-selfie-generator-a-new-frontier-in-self-expression-or-a-superficial-gimmick-bdb | Meta's WhatsApp is on the cusp of a significant transformation with the introduction of its AI-powered "Imagine Me" feature. This tool promises to redefine profile pictures by enabling users to create fantastical avatars based on their selfies. By harnessing the power of AI, users can effortlessly generate a multitude of creative self-portraits, placing themselves in diverse settings and adopting different personas.
## How Does WhatsApp's AI Selfie Generator Work?
The process is remarkably simple. Users begin by uploading a selfie or a collection of selfies to the platform. Next, they input a text prompt starting with "Imagine me..." followed by their desired setting or persona. The AI then works its magic, producing a series of AI-generated images that seamlessly integrate the user's face into various environments and contexts. This innovative approach, reminiscent of Snapchat's "Dreams" feature, has the potential to captivate WhatsApp's billions of users, offering a vast playground for creativity and self-expression.
## Meta's Broader AI Ambitions
Meta's strategic investment in AI technology extends beyond the "Imagine Me" feature. The company has integrated AI chatbots across its platforms, including Facebook, Instagram, Messenger, and WhatsApp, aiming to enhance user experiences. Additionally, Meta is exploring the creation of AI avatars, blurring the lines between human and artificial identities. While these developments showcase Meta's commitment to AI innovation, they also raise questions about their long-term value and impact on user engagement.
## The Search for Meaningful AI Applications
The true potential of AI in social media lies in its ability to address real-world challenges and enhance user experiences beyond novelty. While AI-powered selfies and avatars are undoubtedly captivating, their long-term impact remains uncertain. To truly harness the power of AI, Meta must prioritize features that deliver tangible benefits, foster meaningful connections, and enrich the overall social media experience.
As Meta continues to invest heavily in AI research, it's crucial to strike a balance between innovation and practicality. By focusing on AI applications that address user needs and solve real-world problems, Meta can position itself as a leader in the AI-driven social media landscape.
## The Future of AI and Personal Identity
WhatsApp's AI Selfie Generator represents a significant step forward in AI-powered self-expression. However, its impact on personal identity and online interactions is a complex issue. As AI technology advances, it raises questions about authenticity, privacy, and the potential for manipulation.
The ability to create AI-generated avatars could lead to a proliferation of deepfakes and misinformation, highlighting the need for robust safeguards and ethical guidelines. Moreover, the reliance on AI-generated images could erode the authenticity of online interactions, making it increasingly difficult to distinguish between real and artificial content.
## Implications for Social Media and Beyond
The integration of AI into social media platforms has far-reaching implications beyond self-expression. AI-powered tools can be used to personalize content recommendations, improve user engagement, and even facilitate e-commerce. However, these advancements also raise concerns about data privacy, algorithmic bias, and the potential for social manipulation.
As AI technology continues to evolve, it's essential to develop ethical frameworks and regulations to ensure its responsible and beneficial use. By striking a balance between innovation and human values, we can harness the power of AI to create a more inclusive, equitable, and informed digital society.
| suryalok | |
1,910,141 | Why You Should Avoid `var` and Use `let` and `const` Instead | As a developer, writing clean, predictable, and maintainable code is crucial. One way to achieve this... | 0 | 2024-07-03T12:23:51 | https://dev.to/jatinrai/why-you-should-avoid-var-and-use-let-and-const-instead-434d | javascript, frontend, coding, webdev |
As a developer, writing clean, predictable, and maintainable code is crucial. One way to achieve this is by using `let` and `const` instead of `var` in your JavaScript projects. Here’s why:
#### 1. Block Scope
One of the primary advantages of `let` and `const` over `var` is their block-scoped nature.
- **`var`**: Function-scoped, meaning it is accessible within the entire function or globally if declared outside any function. This can lead to unexpected behavior, as variables declared with `var` are accessible outside the block they are declared in (e.g., inside loops or conditionals).
- **`let` and `const`**: Block-scoped, meaning they are only accessible within the block they are declared in (e.g., within a loop, if statement, etc.). This reduces the risk of variable collisions and unintended behavior.
```javascript
if (true) {
var x = 10;
}
console.log(x); // 10
if (true) {
let y = 10;
}
console.log(y); // ReferenceError: y is not defined
```
#### 2. Reassignment and Constants
- **`var`**: Allows for variable re-declaration and reassignment, which can lead to bugs and harder-to-read code.
- **`let`**: Allows reassignment but does not allow re-declaration within the same scope.
- **`const`**: Does not allow reassignment or re-declaration within the same scope, making it clear that the variable is a constant value.
```javascript
var a = 1;
var a = 2; // Valid but can be confusing
let b = 1;
// let b = 2; // SyntaxError: Identifier 'b' has already been declared
b = 2; // Valid
const c = 1;
// const c = 2; // SyntaxError: Identifier 'c' has already been declared
// c = 2; // TypeError: Assignment to constant variable.
```
#### 3. Hoisting
- **`var`**: Variables declared with `var` are hoisted to the top of their scope and initialized with `undefined`, which can lead to unexpected behavior if you try to use them before declaration.
- **`let` and `const`**: Also hoisted, but they are not initialized. Accessing them before declaration results in a `ReferenceError`.
```javascript
console.log(d); // undefined
var d = 1;
// console.log(e); // ReferenceError: Cannot access 'e' before initialization
let e = 1;
// console.log(f); // ReferenceError: Cannot access 'f' before initialization
const f = 1;
```
#### 4. Readability and Maintenance
Using `let` and `const` helps to make code more predictable and easier to understand. `const` clearly indicates that the value should not change, which helps other developers (and yourself) understand the intention behind the variable's usage.
By using `let` and `const`, you reduce the chance of accidentally overwriting variables, leading to fewer bugs and more maintainable code.
### Conclusion
In summary, `let` and `const` provide better control over variable scope and reassignment, leading to safer and more maintainable code compared to `var`. By adopting `let` and `const` in your JavaScript projects, you can write cleaner, more predictable code that is easier to understand and maintain.
_Thank you for reading. Happy coding!_ | jatinrai |
1,910,138 | Introduction to BitPower Smart Contracts | Introduction BitPower is a decentralized lending platform that provides secure and efficient lending... | 0 | 2024-07-03T12:21:28 | https://dev.to/aimm_y/introduction-to-bitpower-smart-contracts-4bkc | Introduction
BitPower is a decentralized lending platform that provides secure and efficient lending services through smart contract technology. This article briefly introduces the features of BitPower smart contracts.
Core features of smart contracts
Automatic execution
All transactions are automatically executed by smart contracts, which is fast and does not require human intervention.
Open and transparent
The smart contract code is open source and can be viewed and audited by anyone, increasing credibility.
No need for third-party trust
Smart contracts eliminate the reliance on intermediaries, and users interact directly with the platform to reduce risks.
High security
Once deployed, smart contracts cannot be tampered with, ensuring stable rules and protecting user assets.
Automatic liquidation
When the borrower fails to meet the collateral requirements, the smart contract will automatically liquidate to protect the interests of both parties.
Conclusion
BitPower has achieved efficient and secure decentralized lending through smart contract technology. Join BitPower and experience the financial innovation brought by smart contracts! | aimm_y | |
1,910,137 | Software Technology Trends In 2024: Exploring the Future | The rapidly evolving software development company is to hit a mark of $1.03 trillion in market value... | 0 | 2024-07-03T12:21:03 | https://dev.to/infowindtech57/software-technology-trends-in-2024-exploring-the-future-3b95 | softwaredevelopment, hirededicateddevelopers | The rapidly evolving **[software development company](https://www.infowindtech.com/technology-cat/mobile-app-development/)** is to hit a mark of $1.03 trillion in market value before 2027. This development will be powered by the increasing consumer request for better products as well as technological advancements. This growth reflects a consistent rise in market capitalization over time. As consumer needs expand and technology evolves, the software development sector continues to flourish. This impressive growth represents a CAGR of 25.54%, according to 2020 data.
We anticipate a CAGR increase of at least 5% as 2024 progresses. This highlights the industry’s rapid growth. Factors like greater investment and new technologies are driving this rise. Businesses are making significant investments in research and development. The rise of artificial intelligence and machine learning is also significant.
New trends and technology are driving this faster growth. These developments are revolutionizing entire sectors and establishing new benchmarks for efficiency, safety, and user involvement. To remain competitive and satisfy changing customer expectations, businesses need to recognize and take advantage of these changes. This article looks at software technology trends for 2024 and highlights how they will change industries and future environments. Businesses need to adapt as technology continues to advance quickly in order to survive and prosper in a changing marketplace. Planning strategically and achieving sustainable success in the digital age require an understanding of these tendencies.
Looking At The Latest Trends and Technologies
Over time, software trends have changed. In 2024, notable developments are expected. It’s useful to compare current trends with last year’s projections to foresee the future. This helps us understand the software industry’s evolving trends and the benefits of custom software development for businesses. It also sheds light on potential future advancements in the field.
Let’s now examine each trend in software development.
1. Progressive Web Apps (PWAs)
The popularity of Progressive Web Apps (PWAs) has exceeded recent limits. They combine features from web apps and mobile devices. Because they are platform agnostic, you can be sure of a seamless offline experience, quick loading, and platform independence. Companies find PWAs cost-effective for engaging users across different platforms.
According to Emergent Research, the PWA market would increase at a rate of 31.9% yearly and reach USD 10.44 billion by 2027. PWAs are being used by businesses more and more to increase user engagement and consumer reach. This trend reflects a shift towards versatile, efficient app development strategies.
5G Technology
The arrival of 5G technology is changing our online interactions. There’s no doubt that the demand for 5G technology will increase by approximately 48.3% every year worldwide. It is forecasted that in 2023, the sector will bring in $19.3 billion, while $994.8 billion will follow in 2033.
This technology is poised to advance remote healthcare, driverless vehicles, and smart cities significantly. These developments promise a future where connectivity drives unprecedented innovation and efficiency across various sectors.
IoT is on the Rise
IoT is increasingly used by gadgets to connect online. By 2024, the IoT market might reach $336 billion. It could exceed $621 billion by 2030, indicating rapid growth in this sector. This growth triples its revenue over a decade.
Healthcare solutions, industrial automation, and smarter homes are made possible by IoT. IoT, AI, and machine learning together will improve system intelligence by 2024. This integration promises more responsive and intelligent technological advancements.
Low Code Development
Low code platforms enable rapid application development with minimal hand-coding. They revolutionize the software industry by cutting development time and costs. Developers employ pre-built components and graphical user interfaces in creating applications.
In 2022, the low-code platform industry was estimated to be worth $22.5 billion globally. By 2024, it is predicted to surpass $32 billion. The industry is growing at a projected annual rate of 26.1%. This rapid growth reflects the increasing demand for low-code solutions. This growth underscores the rising popularity of low-code programming in tech.
Artificial Intelligence
Artificial intelligence (AI) is a force driving innovation. It is at the forefront of technology. AI revolutionizes how people use technology. It impacts various fields in diverse ways. Examples of these fields include chatbot technology. Virtual assistant software is another area AI influences. Predictive analytics applications are also driven by AI. These applications span across multiple sectors. By 2024, it will transform industries with its growing complexity. These developments promise a global sector-wide revolution, enhancing productivity and decision-making.
The next ten years should see substantial growth in the AI market. According to Statista, a 17.3% annual growth rate is anticipated by 2030 when it will have jumped to over $740 billion from merely $241.8 billion in 2023.
Quantum Computing
Quantum computing, because of its inexhaustible computation strength, can notably revolutionize the software sector. It calculates more quickly than conventional computers by utilizing quantum mechanics. This technology could transform artificial intelligence, drug discovery, cryptography, and optimization. Industries are eager to use quantum computing for solving complex problems.
The possibility exists that it could fundamentally change future technology development. By 2027, quantum computing is predicted to grow from $412 million in 2020 to $8.6 billion.
Quantum computing promises unprecedented processing power. This may result in advancements in areas such as medicine development, optimization issues, and cryptography. As research progresses, more practical applications are expected to emerge, transforming various industries. This progress will enable developers to explore new applications that address complex scientific and business challenges.
Infrastructure as Code (IaC)
Infrastructure-as-Code, or IaC, is a revolutionary approach to software development that leverages programming to govern computer infrastructure in place of human operations. This method calls for knowledgeable developers to automate configuration, guarantee consistency, and expedite deployment. IaC is supported by tools like AWS CloudFormation and Terraform, which provide scalable, dependable infrastructure with features for disaster recovery, continuous integration, and version control.
By 2022, infrastructure as code (IaC) was estimated to attain a market worth of $759.1 million. Anticipated growth from $908.7 million in 2023 to $3,304.9 million by 2030. This would see an increase in its use come 2024 because this leads to more efficient output. It also reduces error rates and supports DevOps and agile methodologies. These factors drive innovation and enhance operational efficiency in software development. As organizations seek faster and more reliable deployment methods, the demand for IaC solutions continues to grow steadily.
Cybersecurity with DevSecOps
There will be major software technological trends of cybersecurity and devsec-ops in 2024 in which DevSecOps integrates security into DevOps workflow to be able to provide continuous protection and such shall result in huge growth for the DevSecOps industry as of its inception in 2022 while its market is foreseen growing at a rate of 30.76% per year during this period so that it can hit about $ 41.66 billion by 2030 furthermore as cyber risks become more advanced DevSecOps has become inevitable in secure software development as well as deployment.
Protection is improved from development to deployment when security is integrated into DevOps. The rising adoption of DevSecOps reflects its critical role in modern software practices. This pattern demonstrates how the industry is moving toward preventative security solutions.
This methodology helps reduce risks and increase compliance levels by automating security audits and integrating security principles into software development cycles. In the current era of evolving cyber security threats, businesses should adopt this idea to safeguard their resources, ensure robustness in their systems as well as maintain users’ confidence in them. The adoption of a proactive strategy by companies for their software development and cyber security leads to modifications in their custom approaches and tactics.
Distributed Computing
As more organizations look to harness the power of many computer resources to address challenging issues, distributed computing is becoming more and more popular. This method enables increased fault tolerance, scalability, and processing efficiency.
Forecast growth for the distributed cloud market is 20.6% CAGR, from $4.4 billion in 2022 to $11.2 billion in 2027. By 2024, distributed computing innovations will propel IoT, AI, and big data analytics, propelling further market rise. In order to address the growing demands of contemporary digital applications, these technologies improve scalability, flexibility, and data processing capabilities by utilizing decentralized infrastructure.
Web 3.0
Web 3.0 features decentralized networks and enhanced user privacy. Web 3.0 promotes increased data ownership. It is driven by technologies such as blockchain. This aims to create a safer and more open online community. These developments emphasize security and autonomy while redefining how people engage with digital platforms.
In 2023, the global Web 3.0 market was estimated to be worth about USD 2.25 billion. This figure is set to grow at a compound annual rate of 49.3% from 2024 to 2030 while becoming more widely adopted amongst other platforms and applications by 2024. This adoption will profoundly change our digital interactions.
Cloud-Native Technologies
Businesses can create and implement scalable applications in cloud settings with the help of cloud-native technology. These technologies, which provide efficiency and flexibility, are essential to contemporary software development. These include serverless computing, microservices, and containerization—all of which improve resilience and adaptability. Accepting these innovations gives companies the ability to successfully respond to changing consumer needs.
Cloud-native technologies are gaining a lot of attention in the whole world market. Each year they are growing at 23.8%. This means that by 2032 $53.6 billion would be the worth of this industry whereas by 2022 it was estimated to be at $6.5 billion. The outlook for 2024 is encouraging because there will be an increase in the usage of cloud-native techniques. They will spur software development’s creativity and agility.
This shift enables faster deployment of applications and services. The rise of DevOps and microservices further fuels this growth. As companies prioritize digital transformation, cloud-native solutions become essential.
IOB (Internet of Behavior)
The IoB, or Internet of Behaviour, is a new movement that takes advantage of data to examine and modify human behavior. By using this data, it can gauge customer preferences and behaviors through digital interactions, social media as well as the Internet of Things devices. As a result, the organizations can adjust their plans depending on what they get from these customer feedbacks.
Comprehending these insights enables businesses to improve consumer experiences and efficiently optimize their marketing endeavors. The Internet of Business (IoB) refers to a significant change in the manner through which businesses use data for personalizing interactions to enhance consumer happiness levels.
The prediction of the Internet of Behaviors market size by 2032, places it at over 3592.6 billion dollars in 2032 after growing at a Compound Annual Growth Rate (CAGR) of 24.97% between 2023 and 2032 starting from 402.6 billion dollars estimates or performance evaluations done in 2022. IoB’s impact is expected to be significant across customer experience, healthcare, and tailored marketing.
Future Technology Ideas for the Software Industry
In the software industry, a few technological breakthroughs could end up as complete game changers. When it comes to solving problems whose complexity surpasses that which classical computers can handle at current quantum computing appears like something entirely new on our planet because it offers some extraordinary processing capabilities. In terms of future advancements, its potential applications in more accurate simulations, pharmaceutical development, optimization techniques, as well as secure communication means could be enormous in bringing about notable achievements either within the industry or the scientific community.
Let’s have a look at the innovations in software development which may change it forever. Edge computing is a new technology that lowers latency and permits real-time data processing by bringing processing resources nearer to data sources. This feature is significant for IoT, autonomous cars, and smart cities, where timely decisions are crucial. As an outcome system’s performance increases, less bandwidth is used and data is processed on-site via edge computing while also enhancing system performance
Digital twins are an emerging idea that is changing fields such as manufacturing, healthcare, and urban planning. They enable instant monitoring, simulation, and analysis. They are virtual copies of physical assets, processes, or systems. Digital twins are used to facilitate product development, and operations management, and predict maintenance needs by harnessing data from sensors and Internet of things devices and then analyzing it. All these contribute significantly to advances in the various sectors that use of this awesome technology has been employed in since it helps in providing useful insights that improve decision-making.
Security and Privacy in Software Development
With our environment becoming more and more digital, software development must have a strong emphasis on security and privacy. Due to the constantly evolving nature of cyber threats, software development companies must prioritize strict security measures and privacy standards.
Life Cycle of Secure Software Development (SDLC)
Approaches include integrating security measures in SDL at each point, from requirement gathering and design to coding, testing and deployment. Static and dynamic code analysis, secure coding standards, threat modeling, and frequent security audits are important procedures.
Data Encryption
Data encryption is one significant way to protect valuable data from intrusion. When it travels and when stored, the only option for data safety is encryption. Using encryption techniques ensures that data confidentiality is maintained throughout transport and storage without compromising your privacy.
MFA Or Multi-Factor Authentication
Sign-up forms require consumers to verify many different products. What this means is that multi-factor authentication provides extra security for consumers who want to sign up. This could consist of something the user knows (password), something the user possesses (security token), and something the user is (biometric verification). The risk of unwanted access is greatly decreased by MFA, even if one factor is compromised.
Regular Security Audits
Security audits must be carried out frequently to enable enterprises to identify weaknesses and ensure compliance with security standards and laws. To determine the possibility of harm and take correctional action, audits are performed on the software, hardware, and procedures that comprise an entity’s information system. Oftentimes such tests may consist of looking for holes in the network among other things like hair not touching policy compliance such as wearing gloves when handling certain types of information.
Privacy by Design
Privacy by Design” is a strategy, which is based on the principle of addressing privacy issues from the beginning when developing software. This means collecting less data, implementing strong access restrictions and, when possible, ensuring that data remains anonymous. In this case, prioritizing user privacy can help software companies gain trust and comply with such regulations as the CCPA or GDPR.
Secure APIs
APIs have become an important part of contemporary software since their use supports the integration of a wide range of services and systems. On the other hand, insecure APIs might reveal weaknesses and give attackers access points. Input validation, rate limitation, appropriate authentication and authorization, and frequent security testing are examples of secure API development techniques.
Incident Response Planning
Cyberattacks and data breaches are situations that can happen even with strong security measures. To react to security issues swiftly and efficiently, you must have an established incident response plan. This includes locating the issue, neutralizing the danger, eliminating the underlying cause, and restoring any compromised systems. Frequent drills and training can assist in guaranteeing that the response team is equipped to address problems that arise in the real world.
Wrapping It Up
2024 is for sure destined to be full of trends and breakthroughs with the software sector taking the lead in technological innovation. The future always has so many chances of coming up with different software developments that range from 5G, IoT, and AI up to Blockchain and Progressive Web Apps making it look endless. Security plus privacy should be the top considerations by software development firms since this will help build trust among end-users when adopting these trends due to today’s growing digital world.
Infowind Technologies highlights the critical role that security and privacy play in software development in this fast-paced digital age. These pillars promote confidence, which is essential for the broad adoption of developing technologies, while also protecting user data.
Infowind Technologies is dedicated to developing innovative solutions that will transform software development in the future and improve digital experiences for people all around the world, even as we manage the always-changing tech landscape.
FAQs
Which software technology advancements should we watch out for in 2024?
In two years, 2024 will feature those major software technological advancements that experts have forecasted. They are enhancing creativity and remaking numerous entities owing to their improved chances for effectiveness and human-computer dialogues including less code development, blockchain applications, the Internet of Things (IoT), 5G technology, Progressive Web Apps, artificial intelligence, augmented and virtual reality, and cloud-native technologies.
What function does blockchain serve outside of finance?
Blockchain technology is useful in fields other than finance, such as supply chain management that monitors products, and health care where patient data is safe and legal for smart contracts. This is because it ensures data integrity, reduces fraud, and is suitable for multiple applications due to its decentralization, transparency and security features.
Why is low code development becoming more and more common?
Low-code development platforms help in the instant development of applications by the use of visual interfaces and pre-built modules. This approach reduces the time and cost spent on developing new software products or services, allowing organizations to be more innovative while also being able to make fast adjustments in response to changes observed within their markets without needing very deep knowledge in programming.
How does 5G technology influence software development?
As much as 5G technologies propose highly responsive and rapidly migrating links, they make it feasible to create the most cutting-edge augmented reality, virtual reality internet-of-things applications that promote self-driving cars, telemedicine, distant health care as well as intelligent urban centers.
Why are Progressive Web Apps (PWAs) good?
In a mission to reduce startup time, Progressive Web Applications or simply web applications (WRAPS) and mobile applications (WRAPS) combine the best qualities of these two software types. This enables companies seeking a unified customer experience across multiple touch points– while keeping costs low – find suitable partners for their objectives.
How can we anticipate the Internet of Things (IoT) to grow by 2024?
By 2024, it is expected to grow in such a way as to connect more devices, and it will improve home control systems in terms of security, heating and lighting, amongst others. Manufacturing production lines are also expected to improve for the same reason—ensure that the flow of sentences consistently reflects the past, present, and future. | infowindtech57 |
1,910,127 | Best Practices for Implementing Microsoft Sentinel | Implementing an effective Security Information and Event Management (SIEM) system is essential for... | 0 | 2024-07-03T12:20:18 | https://dev.to/shivamchamoli18/best-practices-for-implementing-microsoft-sentinel-4o81 | siem, microsoftsentinel, azuresentinel, infosectrain | Implementing an effective Security Information and Event Management (SIEM) system is essential for securing your organization's digital infrastructure. Microsoft Sentinel is a cloud-native SIEM solution that provides organizations with sophisticated security analytics and threat intelligence to help them detect, investigate, and respond to threats more efficiently.
## **Best Practices for Implementing Microsoft Sentinel**
Implementing Microsoft Sentinel requires careful planning and adherence to best practices to ensure its effective deployment and utilization. Here are the best practices for implementing Microsoft Sentinel.
**1. Clearly Define Objectives and Use Cases**
Begin by clearly defining your objectives and use cases for implementing Microsoft Sentinel. Identify specific security goals, such as improving threat detection or enhancing incident response. Align the implementation strategy with these objectives to ensure focused and effective utilization of the SIEM system.
**2. Plan Data Collection and Integration**
Develop a comprehensive plan for data collection and integration. Identify the relevant data sources, including logs, events, and telemetry data. Determine the suitable data connectors and integration methods to ensure a seamless and reliable data flow into Microsoft Sentinel.
**3. Design a Proper Data Scheme and Mapping Strategy**
Create a well-designed data scheme and mapping strategy to effectively organize and structure the collected data. Define data fields, establish naming conventions, and ensure proper mapping between different data sources. This ensures consistency and facilitates accurate correlation and analysis of security events.
**4. Establish a Clear Incident Response Process**
Define a clear and well-documented incident response process that outlines the steps to be taken when security incidents occur. Clearly outline roles and responsibilities, establish effective communication channels, and incorporate automation where feasible. A well-defined process ensures efficient and coordinated incident management.
**5. Leverage Threat Intelligence**
Incorporate threat intelligence capabilities into Microsoft Sentinel by utilizing external threat intelligence feeds and services to improve the system's detection and response capabilities. Stay updated on the latest threat indicators, vulnerabilities, and attack techniques to defend against emerging threats proactively.
**6. Continuous Monitoring and Tuning**
Implement continuous monitoring of Microsoft Sentinel's performance and effectiveness. Regularly review and fine-tune detection rules, response playbooks, and alerting thresholds to ensure optimal performance. Stay proactive in monitoring evolving threats and adjust security measures accordingly.
**7. Foster Collaboration**
Promote collaboration and communication between security teams, IT departments, and relevant stakeholders. Encourage a collaborative environment that facilitates cross-functional cooperation and joint decision-making for improved security outcomes.
**8. Invest in Training and Skill Development**
Dedicate resources to training and skill development programs for Microsoft Sentinel security personnel. Provide comprehensive training on the system's features, data analysis techniques, and incident response procedures. Strengthening the skills and knowledge of the team enhances the system's effectiveness and maximizes its potential.
## **Microsoft Sentinel with InfosecTrain**
[InfosecTrain](https://www.infosectrain.com/) is a recognized provider of cybersecurity training and consulting services. We offer expertise in implementing and optimizing [Microsoft Sentinel Training](https://www.infosectrain.com/courses/azure-sentinel-training/), a powerful Security Information and Event Management (SIEM) solution. InfosecTrain can assist organizations by providing implementation guidance, specialized training programs, support in SOC development, integration of threat intelligence, and continuous monitoring and tuning. Collaborating with InfosecTrain enables organizations to effectively leverage Microsoft Sentinel, enhance their security capabilities, and strengthen their overall security posture. | shivamchamoli18 |
1,910,117 | Paper detailing BitPower Loop’s security | Security Research of BitPower Loop BitPower Loop is a decentralized lending platform based on... | 0 | 2024-07-03T12:17:26 | https://dev.to/sang_ce3ded81da27406cb32c/paper-detailing-bitpower-loops-security-1fni | Security Research of BitPower Loop
BitPower Loop is a decentralized lending platform based on blockchain technology, dedicated to providing users with safe, transparent and efficient financial services. Its core security comes from multi-level technical measures and mechanism design, which ensures the robust operation of the system and the security of user funds. This article will introduce the security of BitPower Loop in detail from five aspects: smart contract security, decentralized management, data and transaction security, fund security and risk control mechanism.
1. Smart Contract Security
Smart contracts are the core components of BitPower Loop, and their codes must undergo strict security audits before deployment. These audits are usually conducted by third-party independent security companies to ensure that there are no vulnerabilities or malicious code in the contract. In addition, the immutability of smart contracts means that once deployed, no one (including the development team) can modify its rules and logic, which fundamentally eliminates the possibility of malicious operations. All operations are automatically executed by smart contracts, avoiding the risk of human intervention and ensuring the fairness and consistency of system operation.
2. Decentralized Management
BitPower Loop eliminates the risks brought by single point failures and central control through decentralized management. The system has no central management agency or owner, and all transactions and operations are jointly verified and recorded by blockchain nodes distributed around the world. This decentralized structure not only improves the system's anti-attack capabilities, but also enhances transparency. Users can publicly view all transaction records, which increases trust in the system.
3. Data and transaction security
BitPower Loop uses advanced encryption technology to protect users' data and transaction information. All data is encrypted during transmission and storage to prevent unauthorized access and data leakage. The consensus mechanism of the blockchain ensures the validity and immutability of each transaction, eliminating the possibility of double payment and forged transactions. In addition, the automated execution of smart contracts also avoids delays and errors caused by human operations, ensuring the real-time and accuracy of transactions.
4. Fund security
The secure storage of user funds is an important feature of BitPower Loop. Funds are stored on the blockchain through smart contracts and maintained by nodes across the entire network. Distributed storage avoids the risk of fund theft caused by centralized storage. In addition, the user's investment returns and shared commissions are automatically allocated to the user's wallet address by the smart contract after the conditions are met, ensuring the timely and accurate arrival of funds.
5. Risk Control Mechanism
BitPower Loop effectively manages lending risks by setting collateral factors and liquidation mechanisms. The collateral factors are independently set according to market liquidity and asset value fluctuations to ensure system stability and lending security. When the value of the borrower's assets falls below a certain threshold, the liquidation mechanism is automatically triggered, ensuring the repayment of the borrower's debt and protecting the interests of the fund provider. In addition, the immutability and automatic execution characteristics of smart contracts further enhance the security and reliability of the system.
Conclusion
BitPower Loop achieves high security and stability through multi-level security measures and mechanism design. Its smart contracts are strictly audited and immutable, decentralized management eliminates single point failure risks, advanced encryption technology protects data and transaction security, distributed storage ensures fund security, and risk control mechanisms manage lending risks. These security features together build a reliable decentralized financial platform that provides users with secure, transparent and efficient financial services. | sang_ce3ded81da27406cb32c | |
1,910,116 | History of .Net | .NET Framework ("Dot Net" deb talaffuz qilinadi) Windows, Linux va macOS operatsion tizimlari uchun... | 0 | 2024-07-03T12:17:11 | https://dev.to/sarvar12345/history-of-net-30jo | .NET Framework ("Dot Net" deb talaffuz qilinadi) Windows, Linux va macOS operatsion tizimlari uchun bepul, ochiq manbali, boshqariladigan kompyuter dasturiy platformasi. Loyiha birinchi navbatda Microsoft xodimlari tomonidan .NET Foundation orqali ishlab chiqilgan va MIT litsenziyasi ostida tarqatiladi.
1990-yillarning oxirida Microsoft .NET Frameworkni o'z ichiga olgan .NET platformasining bir qismi sifatida boshqariladigan kodning ishlash vaqti va C# dasturlash tilini ishlab chiqishni boshladi. 2014-yilda .NET Frameworkning oʻzaro platformali, ochiq manbali versiyasi boʻlgan .NET Core taqdim etildi. Keyingi versiyalarga keyingi yillarda .NET Core 1.0, 2.0, 3.0 va .NET 5.0, 6.0, 7.0, 8.0 va 9.0 versiyalari kiradi.
Asosan musl libc-ni qo'llab-quvvatlaydigan va ishlatadigan Alpine Linux .NET Core 2.1 versiyasidan beri qo'llab-quvvatlanadi.
Windows Arm64 .NET 5 dan boshlab qo'llab-quvvatlanadi. Ilgari ARM dagi .NET x86 arxitekturasi uchun kompilyatsiya qilingan va ARM emulyatsiya qatlami orqali ishlaydigan ilovalarni nazarda tutgan. | sarvar12345 | |
1,910,115 | BitPower: Unlocking the Potential of Cryptocurrency | In the world of cryptocurrency and blockchain, BitPower is like a shining star. It is not only an... | 0 | 2024-07-03T12:15:46 | https://dev.to/pingz_iman_38e5b3b23e011f/bitpower-unlocking-the-potential-of-cryptocurrency-3fc9 |
In the world of cryptocurrency and blockchain, BitPower is like a shining star. It is not only an investment tool, but also a revolutionary financial platform. Blockchain technology provides a solid foundation for it, while smart contracts give it unparalleled transparency and security.
The core of BitPower lies in its unique income mechanism. It records all transactions on the blockchain through smart contracts, ensuring that every transaction is open, transparent and tamper-proof. This transparency allows users to invest with confidence without worrying about any human intervention or fraud.
For investors, BitPower provides a variety of income methods. The first is recurring income. Users can get daily, weekly or monthly returns by providing liquidity. Specifically, providing 10,000 USDT of liquidity will receive 10,040 USDT after one day, 10,400 USDT after seven days, 10,950 USDT after fourteen days, and 12,400 USDT after twenty-eight days. This high rate of return makes BitPower an attractive investment option.
In addition, BitPower also has a sharing reward mechanism. Users can earn extra income by inviting new users to join the platform. Depending on the amount of circulation, users can receive up to 17 levels of sharing rewards. This reward mechanism not only motivates users to actively promote the platform, but also greatly increases users' profit potential.
BitPower's smart contract technology is the key to its success. Through smart contracts, all transactions are automatically executed without any intermediary or third-party intervention. This not only improves the efficiency of transactions, but also reduces transaction costs. More importantly, smart contracts ensure that all transactions are tamper-proof and the security of users' assets is guaranteed to the greatest extent.
BitPower's success is inseparable from its decentralized characteristics. All transactions on the platform are peer-to-peer, and funds flow directly between users' personal wallets. The platform itself cannot access users' funds, which ensures that users' assets are always under their control.
Through blockchain technology, BitPower not only provides high-yield investment opportunities, but also provides a secure, transparent and efficient financial platform for users around the world. It is reshaping the financial industry and unlocking the huge potential of cryptocurrency for users. Whether it is individual investors or enterprises, BitPower provides them with a trustworthy investment option.
In short, BitPower is leading a new trend in cryptocurrency investment through its innovative revenue mechanism, transparent smart contract technology, and decentralized trading model. It not only brings considerable returns to users, but also provides them with unprecedented financial freedom and security. In the future, with the continuous development of blockchain technology, BitPower will continue to shine in the world of cryptocurrency. | pingz_iman_38e5b3b23e011f | |
1,910,114 | Expert Tips for Buying a Boat and Selecting Boston Whaler Accessories | Buying a boat is a significant decision that requires careful consideration and planning. From... | 0 | 2024-07-03T12:14:10 | https://dev.to/reginaldfuller/expert-tips-for-buying-a-boat-and-selecting-boston-whaler-accessories-3jjk | Buying a boat is a significant decision that requires careful consideration and planning. From choosing the right vessel to selecting essential boating accessories like those from Boston Whaler, every step contributes to creating enjoyable and safe boating adventures. Here’s a guide to help you navigate through the process effectively.
Tips for Effective Boat Buying
Begin your **[boat buying](https://boattest.com/)** journey by defining your boating needs and budget. Research different types of boats and their features, considering factors such as size, engine power, and intended use. **[Boston Whaler](https://boattest.com/)** boats are renowned for their craftsmanship and reliability, making them a popular choice among boaters seeking quality and performance.
Maximizing Your Boating Experience with Accessories
Equipping your boat with the right boating accessories enhances functionality and comfort on the water. Essential safety equipment like life vests and fire extinguishers are crucial for emergencies, while convenience items such as seating and storage solutions add convenience. Boston Whaler offers a diverse range of accessories designed to complement their boats, ensuring seamless integration and superior performance.
Conclusion
Mastering boat buying and selecting the best **[boating accessories](https://boattest.com/)** from Boston Whaler are key steps towards enjoying memorable boating experiences. By following these tips and exploring their accessory offerings, you'll be well-prepared to embark on safe, comfortable, and unforgettable adventures on the water.
| reginaldfuller | |
1,902,567 | JavaScript: Alterando a prioridade de execução | Eae gente bonita, beleza? Continuando nossos estudos em JavaScript, dessa vez eu irei falar algo... | 0 | 2024-07-03T12:13:45 | https://dev.to/cristuker/javascript-alterando-a-prioridade-de-execucao-472p | javascript, braziliandevs, beginners, programming | Eae gente bonita, beleza? Continuando nossos estudos em JavaScript, dessa vez eu irei falar algo muito interessante que é "e se nós pudessemos colocar coisas na frente da nossa pilha de execução" ou de uma forma mais simples, alterar a ordem de execução das funções do JavaScript, maneiro né? Então hoje vou te passar algumas formas de fazer isso. Recomendo também que leia o post sobre [callstack](https://dev.to/cristuker/javascript-o-que-e-callstack-3358) e também sobre [pilha](https://dev.to/cristuker/estrutura-de-dados-o-que-e-uma-pilha-296p).
## Tabela de conteúdo
* [A Callstack](#a-callstack)
* [Como alterar a ordem](#como-alterar-a-ordem)
* [Ordem de prioridade das funções](#ordem-de-prioridade-das-funcoes)
* [Referências](#referencias)
## A Callstack
Antes de começarmos a alterar e colocar coisas como prioridade é importante entendermos o que é a callstack e para isso precisamos entender também o que é uma pilha. Tenho artigo explicando os dois eles vão estar no começo e no fim do post. Vamos dar uma passada bem rápida antes de começarmos: bom uma pilha é a exatamente como uma pilha de moedas ou roupas, o primeiro item a entrar é o último a sair e o ultimo a entrar é o primeiro a sair, da mesma forma como empilhamos moedas uma em cima da outra e depois tiramos a primeira de cima e assim por diante. A Callstack não é muito diferente disso porém ao invés de falarmos de moedas estamos falando de funções onde uma função vai chamando a outra.
## Como alterar a ordem
Essa parte é de fato a mais simples. Para fazer isso nós temos as seguintes opções: process.nextTick, setImmediate, setTimeout e interval. E todas são executadas da mesma maneira, passando uma função de callback com as instruções que serão executadas.
Abaixo um exemplo:
```javascript
const Event = require('node:events');
const event = new Event();
const eventName = 'counter';
event.on(eventName, msg => console.log('counter update', msg));
const myCounter = {
counter: 0
};
const proxy = new Proxy(myCounter, {
set: (target, propertyKey, newValue) => {
console.log('proxy', { newValue, key: target[propertyKey] })
event.emit(eventName, { newValue, key: target[propertyKey] })
target[propertyKey] = newValue;
return true;
},
get: (object, prop) => {
// console.log('chamou', { object, prop });
return object[prop];
}
});
setInterval(function () {
proxy.counter +=1
if(proxy.counter === 10) clearInterval(this)
}, 200)
process.nextTick(() => {
proxy.counter = 2;
});
```
Aqui nós temos um exemplo que usei também para aprender sobre o Proxy o tema do ultimo post, mas vai funciona bem. De forma simples esse exemplo conta de 0 a 10. Porém com a adição do `process.nextTick` o contador irá iniciar em 2 e não em 0 pois foi alterada a prioridade de execução.
## Ordem de prioridade das funções
Acima eu citei 4 funções que alteram a prioridade na pilha de execução. Porém se ultilizarmos todas juntas existe uma ordem entre elas que será seguida, que é a seguinte:
1. process.nextTick
2. setImmediate
3. setTimeout
4. setInterval
> É importante dizer que apesar do process.nextTick parecer a melhor função a ser usada, o seu uso não é recomendado sendo uma má prática, pois ela da prioridade total na pilha de execução atrapalhando o ciclo de vida do node.
## Referências
* [Javascript: O que é Callstack](https://dev.to/cristuker/javascript-o-que-e-callstack-3358)
* [Estrutura de dados: Pilha](https://dev.to/cristuker/estrutura-de-dados-o-que-e-uma-pilha-296p).
-------
Espero que tenha sido claro e tenha ajudado a entender um pouco mais sobre o assunto, fique a vontade para dúvidas e sugestões abaixo!
Se chegou até aqui, me segue la nas [redes vizinhas]
(https://cristiansilva.dev/).
<img src="https://media.giphy.com/media/xULW8v7LtZrgcaGvC0/giphy.gif" alt="thank you dog" /> | cristuker |
1,910,113 | The Rise of Online Cricket Games: A Digital Revolution in Sports Entertainment | The advent Dream exchange ID of the digital age has transformed many aspects of human life, and... | 0 | 2024-07-03T12:12:10 | https://dev.to/arijit_badshah_cc2ff6817a/the-rise-of-online-cricket-games-a-digital-revolution-in-sports-entertainment-20jj | The advent [Dream exchange ID](https://dreamexch.live/) of the digital age has transformed many aspects of human life, and sports entertainment is no exception. Among various sports, cricket has seen a significant transition from traditional playfields to digital platforms. Online cricket games have become immensely popular, providing cricket enthusiasts with an engaging and immersive experience. This essay explores the evolution, popularity, impact, and future of online cricket games.of the digital age has transformed many aspects of human life, and sports entertainment is no exception. Among various sports, cricket has seen a significant transition from traditional playfields to digital platforms. Online cricket games have become immensely popular, providing cricket enthusiasts with an engaging and immersive experience. This essay explores the evolution, popularity, impact, and future of online cricket games. | arijit_badshah_cc2ff6817a | |
1,910,112 | Download Old Roll Mod APK (Latest Version) | Old Roll Premium Unloked 2024 is the best app that allows you to recreate old photos at any time free... | 0 | 2024-07-03T12:11:21 | https://dev.to/oldroll_oldrollpro_dc8b13/download-old-roll-mod-apk-latest-version-4e2i | **[Old Roll Premium Unloked 2024](https://oldrollpro.com/)** is the best app that allows you to recreate old photos at any time free of cost!. It also supports all classic cameras. | oldroll_oldrollpro_dc8b13 | |
1,910,111 | Discover Effective Diabetes Treatment Through Kerala Ayurveda | Are you searching for effective [diabetes treatment in... | 0 | 2024-07-03T12:11:09 | https://dev.to/keralaayurveda/discover-effective-diabetes-treatment-through-kerala-ayurveda-32f6 | ayurvedictreatmentinranchi, diabetesdoctorinranchi, ayurvedictreatment | Are you searching for effective [diabetes treatment in Ranchi(https://keralaayurvedaranchi.com/diabetes-treatment.html) that combines traditional wisdom with modern approaches? Look no further than Ayurveda, a holistic system of medicine that offers personalized care and natural solutions. In Ranchi, Ayurvedic treatments are gaining popularity for their ability to manage diabetes effectively while promoting overall health. Let’s explore why Ayurveda is considered the best option for diabetes treatment in Ranchi.
Ayurvedic Approach to Diabetes Treatment
Ayurveda views diabetes as a result of imbalances in the body’s doshas, primarily Kapha and Pitta, leading to impaired digestion and metabolism. In Ranchi, Ayurvedic practitioners tailor treatment plans to each individual, focusing on dietary modifications, herbal medicines, and lifestyle changes.
Herbal Medicines and Therapies
[Ayurvedic treatments in Ranchi](https://keralaayurvedaranchi.com/) utilize potent herbal medicines such as bitter gourd, fenugreek, and Indian gooseberry (amla) to regulate blood sugar levels naturally. These herbs are known for their ability to improve insulin sensitivity and support overall metabolic health.
Panchakarma Therapy
Panchakarma, a detoxification procedure offered in Ranchi’s Ayurvedic clinics, includes therapies like Virechana (therapeutic purgation) and Basti (medicated enema). These treatments help remove toxins from the body, rejuvenating the digestive system and supporting long-term management of diabetes.
Personalized Care and Treatment Plans
One of the key benefits of choosing Ayurvedic treatment in Ranchi is the personalized care provided by experienced practitioners. Each patient receives a customized treatment plan based on their unique constitution and health needs, ensuring effective results and holistic healing.
Why Choose Ayurvedic Treatment in Ranchi?
- Natural Healing: Ayurvedic treatments use natural herbs and therapies, minimizing side effects and promoting overall well-being.
- Comprehensive Approach: Unlike conventional medicine, Ayurveda addresses the root cause of diabetes, aiming for long-term management rather than symptomatic relief.
- Proven Effectiveness: Many individuals in Ranchi have experienced significant improvements in their diabetes management through Ayurvedic treatments, backed by centuries of traditional wisdom and modern research.
Conclusion
If you’re looking for the best Ayurvedic treatment for diabetes in Ranchi, consider exploring the holistic and personalized approach offered by Ayurveda. Whether you’re newly diagnosed or seeking alternative therapies, Ayurvedic clinics in Ranchi provide a supportive environment for your health journey. Embrace natural healing and experience the benefits of Ayurveda in managing diabetes effectively while enhancing your overall quality of life.
Discover the transformative power of Ayurveda in Ranchi and take proactive steps towards better health today.
| keralaayurveda |
1,910,110 | BitPower: Unlocking the Potential of Cryptocurrency | In the world of cryptocurrency and blockchain, BitPower is like a shining star. It is not only an... | 0 | 2024-07-03T12:10:28 | https://dev.to/pings_iman_934c7bc4590ba4/bitpower-unlocking-the-potential-of-cryptocurrency-5b5l |
In the world of cryptocurrency and blockchain, BitPower is like a shining star. It is not only an investment tool, but also a revolutionary financial platform. Blockchain technology provides a solid foundation for it, while smart contracts give it unparalleled transparency and security.
The core of BitPower lies in its unique income mechanism. It records all transactions on the blockchain through smart contracts, ensuring that every transaction is open, transparent and tamper-proof. This transparency allows users to invest with confidence without worrying about any human intervention or fraud.
For investors, BitPower provides a variety of income methods. The first is recurring income. Users can get daily, weekly or monthly returns by providing liquidity. Specifically, providing 10,000 USDT of liquidity will receive 10,040 USDT after one day, 10,400 USDT after seven days, 10,950 USDT after fourteen days, and 12,400 USDT after twenty-eight days. This high rate of return makes BitPower an attractive investment option.
In addition, BitPower also has a sharing reward mechanism. Users can earn extra income by inviting new users to join the platform. Depending on the amount of circulation, users can receive up to 17 levels of sharing rewards. This reward mechanism not only motivates users to actively promote the platform, but also greatly increases users' profit potential.
BitPower's smart contract technology is the key to its success. Through smart contracts, all transactions are automatically executed without any intermediary or third-party intervention. This not only improves the efficiency of transactions, but also reduces transaction costs. More importantly, smart contracts ensure that all transactions are tamper-proof and the security of users' assets is guaranteed to the greatest extent.
BitPower's success is inseparable from its decentralized characteristics. All transactions on the platform are peer-to-peer, and funds flow directly between users' personal wallets. The platform itself cannot access users' funds, which ensures that users' assets are always under their control.
Through blockchain technology, BitPower not only provides high-yield investment opportunities, but also provides a secure, transparent and efficient financial platform for users around the world. It is reshaping the financial industry and unlocking the huge potential of cryptocurrency for users. Whether it is individual investors or enterprises, BitPower provides them with a trustworthy investment option.
In short, BitPower is leading a new trend in cryptocurrency investment through its innovative revenue mechanism, transparent smart contract technology, and decentralized trading model. It not only brings considerable returns to users, but also provides them with unprecedented financial freedom and security. In the future, with the continuous development of blockchain technology, BitPower will continue to shine in the world of cryptocurrency. | pings_iman_934c7bc4590ba4 | |
1,910,109 | Introduction to BitPower Smart Contracts | Introduction BitPower is a decentralized lending platform that provides secure and efficient lending... | 0 | 2024-07-03T12:09:10 | https://dev.to/aimm_x_54a3484700fbe0d3be/introduction-to-bitpower-smart-contracts-ef4 | Introduction
BitPower is a decentralized lending platform that provides secure and efficient lending services through smart contract technology. This article briefly introduces the features of BitPower smart contracts.
Core features of smart contracts
Automatic execution
All transactions are automatically executed by smart contracts, which is fast and does not require human intervention.
Open and transparent
The smart contract code is open source and can be viewed and audited by anyone, increasing credibility.
No need for third-party trust
Smart contracts eliminate the reliance on intermediaries, and users interact directly with the platform to reduce risks.
High security
Once deployed, smart contracts cannot be tampered with, ensuring stable rules and protecting user assets.
Automatic liquidation
When the borrower fails to meet the collateral requirements, the smart contract will automatically liquidate to protect the interests of both parties.
Conclusion
BitPower has achieved efficient and secure decentralized lending through smart contract technology. Join BitPower and experience the financial innovation brought by smart contracts! | aimm_x_54a3484700fbe0d3be | |
1,910,108 | ReactJS vs React Native: A Comprehensive Comparison for Modern Developers | In the ever-evolving world of web and mobile development, choosing the right framework is crucial for... | 0 | 2024-07-03T12:08:59 | https://dev.to/scholarhat/reactjs-vs-react-native-a-comprehensive-comparison-for-modern-developers-11jj | In the ever-evolving world of web and mobile development, choosing the right framework is crucial for success. Two popular options that often come up in discussions are [ReactJS vs React Native](https://www.scholarhat.com/tutorial/react/difference-between-react-js-and-react-native). While they share a common lineage, these frameworks serve different purposes and have distinct characteristics. This article will delve deep into the similarities, differences, and use cases of ReactJS and React Native, helping you make an informed decision for your next project.
### Understanding the Basics: ReactJS and React Native Explained
## What is ReactJS?
ReactJS, commonly referred to as React, is an open-source JavaScript library developed by Facebook for building user interfaces, primarily for web applications. It allows developers to create reusable UI components and manage the state of these components efficiently. ReactJS has gained immense popularity due to its simplicity, flexibility, and performance optimizations.
## What is React Native?
React Native, on the other hand, is a framework for building cross-platform mobile applications using React and native platform capabilities. It allows developers to use ReactJS concepts to create mobile apps that can run on both iOS and Android devices. React Native bridges the gap between web and mobile development, offering a "learn once, write anywhere" approach.
## Key Differences Between ReactJS and React Native
While ReactJS and React Native share some common ground, they have several crucial differences that set them apart. Let's explore these differences in detail:
## 1. Platform and Output
## ReactJS:
Primarily used for web development
Outputs HTML, CSS, and JavaScript
Runs in web browsers
## React Native:
Used for mobile app development
Outputs native mobile UI components
Runs on mobile devices (iOS and Android)
## 2. Rendering Mechanism
## ReactJS:
Uses a virtual DOM (Document Object Model) for efficient rendering
Updates the actual DOM when changes occur
## React Native:
Uses native components and APIs
Renders to native UI elements specific to each platform
## 3. Styling Approach
## ReactJS:
Uses CSS for styling
Supports CSS modules, styled-components, and other CSS-in-JS solutions
## React Native:
Uses a JavaScript object for styling, similar to CSS
Provides a subset of CSS properties optimized for mobile
## 4. Component Libraries
## ReactJS:
Has a vast ecosystem of third-party component libraries
Popular libraries include Material-UI, Ant Design, and Chakra UI
## React Native:
Has a growing ecosystem of mobile-specific component libraries
Notable libraries include React Native Elements and NativeBase
## 5. Navigation
## ReactJS:
Uses libraries like React Router for navigation
Typically relies on browser history API
## React Native:
Uses specialized navigation libraries like React Navigation
Implements native navigation patterns for each platform
## Similarities Between ReactJS and React Native
## Despite their differences, ReactJS and React Native share several core concepts and features:
Component-Based Architecture: Both frameworks use a component-based approach to building user interfaces.
Virtual DOM: While React Native doesn't use a browser's DOM, it employs a similar concept for efficient updates.
JSX: Both frameworks use JSX, a syntax extension for JavaScript, to describe the UI structure.
Unidirectional Data Flow: They both follow a one-way data flow, making it easier to manage and debug application state.
React Hooks: Introduced in React 16.8, hooks are available in both ReactJS and React Native for managing state and side effects.
## When to Choose ReactJS
ReactJS is an excellent choice for various web development scenarios. Here are some situations where ReactJS shines:
## 1. Single-Page Applications (SPAs)
ReactJS excels at building SPAs, where the entire application runs on a single HTML page. Its efficient rendering and state management make it perfect for creating smooth, responsive user experiences.
## 2. Complex User Interfaces
For web applications with intricate UIs and frequent updates, ReactJS's component-based architecture and virtual DOM provide optimal performance and maintainability.
## 3. Progressive Web Apps (PWAs)
ReactJS can be used to create PWAs, which offer a native app-like experience within web browsers. This is ideal for businesses looking to provide a mobile-friendly experience without developing separate native apps.
## 4. Server-Side Rendering (SSR)
With frameworks like Next.js, ReactJS supports server-side rendering, which can significantly improve initial load times and SEO performance for content-heavy websites.
## 5. Large-Scale Web Applications
ReactJS's modularity and extensive ecosystem make it suitable for building and maintaining large-scale web applications with multiple developers working simultaneously.
## When to Choose React Native
React Native is the go-to choice for certain mobile development scenarios. Here's when you should consider using React Native:
## 1. Cross-Platform Mobile Apps
If you need to develop an app for both iOS and Android platforms with a single codebase, React Native is an excellent choice. It allows for significant code reuse between platforms, saving time and resources.
## 2. Rapid Prototyping
React Native's "hot reloading" feature enables developers to see changes in real-time, making it ideal for quickly prototyping and iterating on mobile app ideas.
## 3. Performance-Critical Mobile Apps
While not as performant as fully native apps in all scenarios, React Native can deliver near-native performance for many types of applications, especially when optimized correctly.
## 4. Apps with Simple to Moderate Complexity
React Native is well-suited for apps with straightforward to moderately complex user interfaces and functionality. It can handle a wide range of mobile app use cases efficiently.
## 5. Extending Existing Native Apps
React Native can be integrated into existing native iOS or Android apps, allowing developers to add new features or screens using React Native without rewriting the entire application.
## Performance Considerations: ReactJS vs React Native
When comparing ReactJS and React Native, performance is a crucial factor to consider. Let's examine how each framework performs in different scenarios:
## ReactJS Performance
**Virtual DOM:** ReactJS's virtual DOM minimizes actual DOM manipulations, resulting in faster rendering and updates.
Code Splitting: ReactJS supports code splitting, allowing developers to load only the necessary code for each route, improving initial load times.
Server-Side Rendering: With SSR, ReactJS can provide faster initial page loads and improved SEO.
Optimization Techniques: ReactJS offers various optimization techniques like memoization, lazy loading, and the use of PureComponent for better performance.
## React Native Performance
Native Components: React Native uses native UI components, which can lead to better performance compared to hybrid mobile frameworks.
JavaScript Core: React Native runs JavaScript code in a separate thread, preventing UI blocking and ensuring smooth animations.
Platform-Specific Optimizations: React Native allows developers to write platform-specific code when needed, optimizing performance for each platform.
Hermes Engine: Facebook's Hermes JavaScript engine, available for React Native, can significantly improve app start-up time and reduce memory usage.
## Development Experience: ReactJS vs React Native
The development experience is another crucial aspect to consider when choosing between ReactJS and React Native. Let's compare the two:
## ReactJS Development Experience
Extensive Ecosystem: ReactJS has a vast ecosystem of libraries, tools, and community support, making it easier to find solutions and resources.
Browser DevTools: Developers can use browser developer tools for debugging and inspecting ReactJS applications.
Fast Refresh: ReactJS supports fast refresh, allowing developers to see changes instantly without losing component state.
Flexible Styling: ReactJS offers multiple styling options, from traditional CSS to CSS-in-JS solutions.
## React Native Development Experience
Mobile-Specific Challenges: Developers need to consider mobile-specific issues like device fragmentation and platform differences.
Expo: Tools like Expo simplify React Native development by providing a set of pre-built components and services.
React Native CLI: The official CLI tool helps developers set up and manage React Native projects efficiently.
Platform-Specific Code: React Native allows writing platform-specific code when needed, providing flexibility in handling platform differences.
## Future Trends: ReactJS and React Native
As we look to the future, both ReactJS and React Native continue to evolve. Here are some trends and developments to watch:
## ReactJS Future Trends
Server Components: React Server Components aim to improve performance and reduce bundle sizes by rendering components on the server.
Concurrent Mode: This feature will enable React to work on multiple tasks simultaneously, improving responsiveness.
Suspense for Data Fetching: Suspense will provide a more straightforward way to handle asynchronous operations and loading states.
## React Native Future Trends
Improved Performance: Ongoing efforts to enhance React Native's performance, including work on the new architecture.
Better Integration with Native APIs: Continued improvements in bridging React Native with native platform capabilities.
Web Support: The React Native for Web project aims to bring React Native components and APIs to web browsers.
## Conclusion: Making the Right Choice
In the ReactJS vs React Native debate, there's no one-size-fits-all answer. The choice between these two powerful frameworks depends on your project requirements, target platform, and development goals.
Choose ReactJS if you're focused on web development, need to create complex single-page applications, or require server-side rendering capabilities. Its robust ecosystem and flexibility make it an excellent choice for a wide range of web projects.
Opt for React Native if your primary goal is to develop cross-platform mobile applications with a native look and feel. It's particularly useful when you want to leverage your React knowledge to build mobile apps efficiently.
Ultimately, both ReactJS and React Native are powerful tools in a developer's arsenal. By understanding their strengths, limitations, and use cases, you can make an informed decision that best suits your project needs and sets you up for success in the ever-evolving world of web and mobile development.
| scholarhat | |
1,910,107 | A Mysore, Ooty, Coorg Tour Package by Karnataka Holiday Vacations | Are you dreaming of an escape that blends rich heritage, breathtaking landscapes, and a touch of... | 0 | 2024-07-03T12:08:21 | https://dev.to/karnataka_holidayvacatio/a-mysore-ooty-coorg-tour-package-by-karnataka-holiday-vacations-59m2 | Are you dreaming of an escape that blends rich heritage, breathtaking landscapes, and a touch of adventure? Look no further than the captivating **[Mysore Ooty Coorg Tour Package](https://www.karnatakaholidayvacation.com/bangalore-mysore-coorg-ooty-tour-package-5n-6d/)** by Karnataka Holiday Vacations, your gateway to the soul of South India. This meticulously crafted itinerary promises an unforgettable journey, weaving together the cultural tapestry of Mysore with the serene beauty of Ooty and the verdant charm of Coorg.
Embark on a Royal Legacy in Mysore
Our adventure begins in the majestic city of Mysore, once the regal seat of the Wodeyar dynasty. Immerse yourself in the grandeur of the opulent Mysore Palace, a masterpiece of Indo-Saracenic architecture adorned with intricate carvings and stained-glass windows. Witness the grandeur of the daily Dussehra procession, a vibrant spectacle pulsating with cultural fervor (if your travel dates coincide with this festival).
Delve into the bustling heart of the city at the Devaraja Market, a treasure trove of spices, silks, and handcrafted souvenirs. Don't miss a captivating performance of Bharatanatyam, a classical Indian dance form, at the opulent Rangayana Theatre.
Unwind in the Serene Embrace of Ooty
From the regal charm of Mysore, we ascend to the serene hill station of Ooty, also known as the "Queen of Hills." Nestled amidst the emerald embrace of the Nilgiri Hills, Ooty offers a breath of fresh mountain air and captivating scenery. Take a stroll on the charming Coonoor toy train, traversing picturesque tea plantations and colonial-era landmarks.
Embark on a scenic ride on a boat across Ooty Lake, surrounded by lush greenery and majestic mountains. Explore the sprawling Botanical Garden, showcasing a vibrant tapestry of exotic flora. In the evenings, indulge in a cup of steaming Nilgiri tea, savoring its distinct aroma and flavor.
Embrace the Enchanting Coorg Hills
Our journey culminates in the captivating Coorg region, also known as the "Scotland of India." Sprawling coffee plantations, cascading waterfalls, and verdant hills paint a picture of idyllic beauty. Breathe in the refreshing aroma of freshly brewed coffee as you visit a local plantation and learn about the bean-to-cup journey.
Hike through lush green trails, encountering hidden waterfalls and breathtaking viewpoints. Engage in adventure activities like white water rafting on the Barapole River or indulge in a wildlife safari in Nagarhole National Park, home to diverse flora and fauna.
Karnataka Holiday Vacations: Crafting Memories That Last
At **[Karnataka Holiday Vacations](https://www.karnatakaholidayvacation.com)**, we understand that every traveler seeks a unique experience. We go beyond just creating itineraries; we curate bespoke journeys that cater to your specific interests and preferences. Whether you're a history buff enthralled by Mysore's royal heritage, a nature lover seeking solace in Ooty's serenity, or an adventurer yearning for Coorg's thrill, we have something for everyone.
Tailor-Made Experiences
Our Mysore, Ooty, and Coorg tour package is a mere starting point. We offer the flexibility to personalize your itinerary. Extend your stay in Mysore to delve deeper into its cultural heritage. Opt for a homestay experience in Coorg to get a taste of local life and savor authentic cuisine. Include a visit to Dubare Elephant Camp near Ooty for a unique encounter with these gentle giants.
Unwavering Support
Our dedicated team of travel experts is available 24/7 to assist you with every aspect of your journey. From booking comfortable accommodations to arranging transportation and providing local insights, we ensure a seamless and hassle-free experience.
Are you ready to embark on a captivating journey through the heart of South India? Get in touch with Karnataka Holiday Vacations today!
Book Your Dream Escape: For a personalized quote and to book your unforgettable Mysore, Ooty, and Coorg tour package, call us now at 8088703499.
Explore the Possibilities: Visit our website, https://www.karnatakaholidayvacation.com/, to explore our extensive range of tour packages and discover the magic of Karnataka.
Let Karnataka Holiday Vacations be your guide as you embark on a journey that will leave you with memories that last a lifetime.
| karnataka_holidayvacatio | |
1,910,106 | How to fix broken openshift cluster?. | A post by YR Nath | 0 | 2024-07-03T12:08:09 | https://dev.to/yr_nath_e4d2c151245a6e9e8/how-to-fix-broken-openshift-cluster-560m | yr_nath_e4d2c151245a6e9e8 | ||
1,910,105 | Nodejs and typescript boilerplate | Node Boilerplate Typescript This repo is boilerplate for typescript and nodejs... | 0 | 2024-07-03T12:07:19 | https://dev.to/bhumit070/nodejs-and-typescript-boilerplate-48i8 | # Node Boilerplate Typescript
- [This repo](https://github.com/bhumit070/node-boilerplate-ts) is boilerplate for typescript and nodejs projects
## What is included
- Server with express
- Security Packages
- [hpp](https://www.npmjs.com/package/hpp) - Express middleware to protect against HTTP Parameter Pollution attacks
- [helmet](https://www.npmjs.com/package/helmet) - Helmet helps secure Express apps by setting HTTP response headers.
- File uploading
- Sending Emails
- Logging
- By default it is configured to log on console but you can extend it to write to any file as well
- Object(s) Validation using zod
- Error Handling
- Express Req object extend with typescript support
## Routing
- The base path for api will be `api`.
- Any folder you put inside modules folder that container `routes.ts` file will be added to express router stack and that will be route for the api as well.
- So suppose if you make folder something like `modules/v1/file/routes.ts` then all the routes defined in that `routes.ts` file will be registered and will be available at `domain/api/modules/v1/file`.
- So think like routing as a file based routing.
- You must export router as default export from `routes.ts` file to make this happen.
## Error handling
- You can alway use try catch in your controllers to handle errors by your self, but here I have used different approach.
- Just wrap your any controller/middleware that receives express's `req,res` object wrap them in `PromiseHandler` function and this will handle the rest of the stuff.
- Also you can create custom errors in error folder as per your requirement and handle it in `handleApiError` according the way you want.
| bhumit070 | |
1,910,104 | Are Blockchain Games The Future? | What is Blockchain Gaming? Blockchain games are now the new trend in the gaming industry that is... | 0 | 2024-07-03T12:07:01 | https://dev.to/bellabardot/are-blockchain-games-the-future-4cj4 | blockchain, blockchaingames, blockchaingamedevelopment | **What is Blockchain Gaming?**
Blockchain games are now the new trend in the gaming industry that is receiving a whopping welcome among gamers and blockchain enthusiasts. Blockchain games surpass traditional games by offering military-grade security and ownership of in-game assets. The exceptional attributes of blockchain games are amassing new audiences and a plethora of blockchains that explicitly function for games.
Blockchain developers now rely on layer-3 blockchains to create games owing to their high throughput. The booming technologies such as artificial intelligence, virtual reality, augmented reality, web3, predictive analytics, etc are taking the blockchain gaming realm to a whole new level. This has intrigued gaming entrepreneurs to invest in [blockchain game development](https://maticz.com/blockchain-game-development). This blog takes you through the future of blockchain gaming and its potential over traditional gaming.
**What Makes Blockchain Games the future of gaming?**
**Security**
The security of blockchain games is heightened compared to traditional gaming. The blockchains offer enhanced encryption mechanisms that protect the games from data breaches and fraudulent attacks. Blockchain games are known for their transparency where every single transaction within the game is publicly available.
**Decentralized Ownership**
Blockchain games are completely decentralized and offer in-game asset ownership to players. In traditional games, the in-game assets are owned by the centralized authorities, and the ownership is limited to the players. The in-game assets are represented as NFTs which can be used by the players for in-game purchases.
**Cross-Game Compatibility**
Blockchain games offer cross-game compatibility where the players use the in-game assets across various blockchain games. This aids players in creating a collaborative gaming experience and enhances gaming by improving the possibilities to use their investments.
**Incentive Gaming Structures**
Blockchain games offer innovative incentive gaming structures such as play-to-earn, tap-to-earn, etc. The players earn by participating in the games where the rewards have real-world value which has fascinated gamers to delve into blockchain games.
**Community Engagement**
Blockchain games have a vast active community which has empowered them to create a strong foundation in the gaming industry. The blockchain games DAOs help the players to participate in major decision-making like game updates, changes in rules, etc.
**Wrapping Up**
The future of blockchain games is prodigious which tempts players and businesses to invest in blockchain games. Blockchain games are recognized as a lucrative business venture that promises to drive tremendous profits. The blockchain gaming industry continues to grow and key traits of blockchain games such as security, and in-game assets, boost the interest of the gamers and this improves the player retention rate. Businesses that are considering investing in blockchain games can connect with blockchain game development companies in the industry to create their blockchain games.
| bellabardot |
1,910,016 | Learnt C Language | Hello, fellow developers! I'm excited to journey of learning C programming with you all. C is known... | 0 | 2024-07-03T12:06:19 | https://dev.to/skandaprasaad/learnt-c-language-1cgc | Hello, fellow developers! I'm excited to journey of learning C programming with you all. C is known for its efficiency, portability, and low-level access to memory, making it ideal for system-level programming It serves as the foundational language for many modern programming languages, such as C++, Java, and Python.
💻 Syntax and Structure :
```
#include <stdio.h>
int main() {
int age = 30; // Variable declaration and initialization
printf("Hello, World! I am %d years old.\n", age); // Output statement
return 0; // Return statement
}
```
🌟 Personal Experience :
Learning C was both challenging and rewarding. Initially, understanding pointers and manual memory management was daunting. However, with consistent practice and debugging, I overcame these challenges. Writing small programs to reinforce concepts like pointers and memory allocation helped solidify my understanding.
🌟 Insights and Takeaways :
One significant insight was the importance of memory management. Unlike higher-level languages that handle memory automatically, C requires meticulous attention to memory allocation and deallocation to avoid leaks and other issues. This experience has given me a deeper appreciation for how computers manage resources.
🛠️ Learning :
During my learning journey, I’ve worked learnt language by understanding the codes and trying out in my local machine. You can find the code on my GitHub: {% embed https://github.com/skanda-prasaad/C_language %}
🛠️ PROJECTS :
I’ve worked on projects and exercises to solidify my understanding of C. You can find the code and detailed explanations of these projects on my GitHub:
[projects repo](https://github.com/skanda-prasaad/c-projects)
📣 Conclusion :
The C programming language remains a cornerstone of computer science. Its efficiency, portability, and low-level capabilities make it indispensable for system programming, embedded systems, and game development. Although learning C can be challenging, the skills and insights gained are invaluable, providing a solid foundation for any aspiring programmer.
I am eager to explore further tech stacks and programming languages to expand my skills and knowledge. I aim to broaden my understanding and contribute more effectively to diverse projects within the Open Source community.
Happy coding!
| skandaprasaad | |
1,910,103 | Ultimate Guide to React Native Image Components | Have you ever tried to work with images in your React Native app and felt a bit lost? Don't worry,... | 0 | 2024-07-03T12:06:04 | https://dev.to/syketb/ultimate-guide-to-react-native-image-components-4noa | javascript, reactnative, react, beginners | Have you ever tried to work with images in your React Native app and felt a bit lost? Don't worry, you're not alone! Handling images in React Native can seem a little different from what you're used to on the web, but once you understand the basics, it becomes a breeze.
Let's start with the Image component. React Native provides this built-in component to display images in your app, just like how you'd use a <img /> tag on the web. However, there's a catch: if you want to set an image as a background, you'll need to use a different component called ImageBackground.
Now, you might be thinking, "Why can't I just use the Image component for backgrounds too?" Well, the Image component is designed specifically for displaying standalone images, like profile pictures or product images. It's optimized for performance and comes with features like caching and resizing out of the box.
On the other hand, the <ImageBackground /> component is meant for, you guessed it, setting images as backgrounds for your app's views or components. This component acts as a container that stretches the image to fit its entire area, making it perfect for creating visually appealing backgrounds.
Today, our goal is to break down the Image component and explore how we can use it to meet our various requirements.
As I mentioned, the Image component is provided by React Native, so it's necessary to import the Image component from React Native.
```javascript
import { Image } from 'react-native';
```
Amazing! Now, we will show three different examples of using the Image component in React Native with various variations:
```javascript
import { StatusBar } from "expo-status-bar";
import { Image, View } from "react-native";
import { SafeAreaView } from "react-native-safe-area-context";
const Home = () => {
return (
<SafeAreaView className="flex-1 p-4">
<View className="flex-1 space-y-3">
<Image
className="w-28 h-28"
resizeMethod="contain"
source={require("../assets/images/image.jpg")}
/>
<Image
className="w-28 h-28 rounded-full"
source={{
uri: "https://letsenhance.io/static/8f5e523ee6b2479e26ecc91b9c25261e/1015f/MainAfter.jpg",
}}
/>
</View>
<StatusBar backgroundColor="#000" style="auto" />
</SafeAreaView>
);
};
export default Home;
```
Here is the output of the above code:
In the above component, you will notice two images. My concern is not with the images themselves but with the use of require() and URI. If you look closely, you'll see we used two different source options depending on the URL. For plain image URLs, you have to use URI instead of require(). If your images are already in your project directory in a static location, you can use the require() method.
I hope you understand how the Image component works in different setups. Depending on the situation, we can use either require() or a URI.
So far, we have covered the usage of the Image component. However, this is not the end of the story for the Image component, there are a couple of important things to discuss.
When it comes to the props of the Image component, the list is extensive. I highly recommend looking into the React Native Image component documentation. There, you will find numerous props that we can pass into the Image component, which can simplify our work based on your requirements.
For example, if we want to use the alt prop in the Image component, here is the code:
```javascript
<Image
className="w-28 h-28"
resizeMethod="contain"
source={require("../assets/images/image.jpg")}
alt="Wildlife image"
/>
```
It's one example of how you can leverage the prop in the Image component.
Well, we have covered almost all of the important points. Just one more thing I want to highlight is the usage of GIF and WebP support on Android.
When building your native code, GIF and WebP are not supported by default on Android. You will need to add some optional modules in android/app/build.gradle, depending on the needs of your app.
```
dependencies {
// If your app supports Android versions before Ice Cream Sandwich (API level 14)
implementation 'com.facebook.fresco:animated-base-support:1.3.0'
// For animated GIF support
implementation 'com.facebook.fresco:animated-gif:3.1.3'
// For WebP support, including animated WebP
implementation 'com.facebook.fresco:animated-webp:3.1.3'
implementation 'com.facebook.fresco:webpsupport:3.1.3'
// For WebP support, without animations
implementation 'com.facebook.fresco:webpsupport:3.1.3'
}
```
Amazing, I believe if you covered this part of the article, you won't have any problem using the Image component in your React Native applications. By thoroughly understanding the concepts and techniques discussed here, you'll be well-equipped to seamlessly integrate images into your projects, elevating the overall user experience and making your app more visually appealing.
I am Syket Bhattachergee, Software Engineer at CreoWis. If you want to discuss your technical writing needs or any role? You can reach out to me on [LinkedIn](https://linkedin.com/in/syketb) and follow my work on [GitHub](https://github.com/syket-git). | syketb |
1,910,102 | A Guide to Web Servers, Providers, and Management | The internet, a vast ocean of information, wouldn't be accessible without the silent workhorses... | 0 | 2024-07-03T12:05:43 | https://dev.to/65d0431e27fd/a-guide-to-web-servers-providers-and-management-4enh | The internet, a vast ocean of information, wouldn't be accessible without the silent workhorses behind the scenes: web servers. These powerful computers store websites and deliver their content to your browser whenever you enter a URL. But web servers are just one piece of the puzzle. Let's dive deep and explore what web servers are, who provides them, and how to manage them for a smooth online presence.
## Understanding Web Servers
Imagine a giant warehouse filled with shelves containing files, images, and videos – that's essentially what a web server is. When you type in a website address, your computer connects to this server, retrieves the relevant files, and displays them on your screen as a webpage. Web servers run specialized software that understands and responds to requests using a protocol called Hypertext Transfer Protocol (HTTP).
There are different types of web servers available, each catering to specific needs:
Apache HTTP Server: One of the most popular and free options, known for its reliability and security.
Nginx (pronounced Engine-X): Another popular choice, known for its efficiency and handling high traffic websites.
Microsoft IIS (Internet Information Services): Primarily used on Windows server systems.
## Top Web Server Providers
Now that you understand the core function, let's explore the world of web server providers. These companies offer the physical infrastructure (servers) and software needed to run your website. Here are some of the leading players:
Bluehost: A popular choice for beginners, offering shared hosting plans at affordable prices.
SiteGround: Known for its excellent speed and security features, perfect for growing websites.
HostGator: Another budget-friendly option with a user-friendly interface for easy management.
Cloudways: A managed cloud hosting provider, offering high-performance servers with excellent scalability.
Amazon Web Services (AWS): A powerful option for large enterprises with a wide range of cloud-based hosting solutions.
Choosing the right provider depends on your website's traffic, budget, and technical expertise. Shared hosting is a cost-effective option for smaller websites, while dedicated servers or cloud hosting offer better performance and scalability for larger sites.
## The Art of Server Management
Once you have your web server up and running, proper management becomes crucial. Here's what [server management](https://www.hostingseekers.com/blog/what-is-server-management/) entails:
Security Updates: Regularly update your web server software and operating system to patch security vulnerabilities.
Performance Monitoring: Track your server's performance metrics like uptime, response time, and resource usage to identify and address bottlenecks.
Backups: Regularly back up your website files and databases to prevent data loss in case of server failures.
Software Management: Install and configure additional software needed for your website's functionality, such as content management systems (CMS) or e-commerce platforms.
Managing a web server can be complex, especially for non-technical users. Many web hosting providers offer managed hosting plans where they take care of server maintenance and updates for you.
Also know what is [dedicated game server](https://www.hostingseekers.com/blog/dedicated-server-for-gaming/) and how to pick one.
Conclusion
Web servers are the backbone of the internet, silently delivering the content that powers our online world. By understanding web servers, the different providers available, and how to manage them, you're well on your way to building a strong foundation for your website's success. Remember, the right server solution can make a world of difference in terms of website speed, security, and scalability. | 65d0431e27fd | |
1,910,101 | BitPower: Unlocking the Potential of Cryptocurrency | In the world of cryptocurrency and blockchain, BitPower is like a shining star. It is not only an... | 0 | 2024-07-03T12:05:35 | https://dev.to/pingd_iman_9228b54c026437/bitpower-unlocking-the-potential-of-cryptocurrency-2ke0 |
In the world of cryptocurrency and blockchain, BitPower is like a shining star. It is not only an investment tool, but also a revolutionary financial platform. Blockchain technology provides a solid foundation for it, while smart contracts give it unparalleled transparency and security.
The core of BitPower lies in its unique income mechanism. It records all transactions on the blockchain through smart contracts, ensuring that every transaction is open, transparent and tamper-proof. This transparency allows users to invest with confidence without worrying about any human intervention or fraud.
For investors, BitPower provides a variety of income methods. The first is recurring income. Users can get daily, weekly or monthly returns by providing liquidity. Specifically, providing 10,000 USDT of liquidity will receive 10,040 USDT after one day, 10,400 USDT after seven days, 10,950 USDT after fourteen days, and 12,400 USDT after twenty-eight days. This high rate of return makes BitPower an attractive investment option.
In addition, BitPower also has a sharing reward mechanism. Users can earn extra income by inviting new users to join the platform. Depending on the amount of circulation, users can receive up to 17 levels of sharing rewards. This reward mechanism not only motivates users to actively promote the platform, but also greatly increases users' profit potential.
BitPower's smart contract technology is the key to its success. Through smart contracts, all transactions are automatically executed without any intermediary or third-party intervention. This not only improves the efficiency of transactions, but also reduces transaction costs. More importantly, smart contracts ensure that all transactions are tamper-proof and the security of users' assets is guaranteed to the greatest extent.
BitPower's success is inseparable from its decentralized characteristics. All transactions on the platform are peer-to-peer, and funds flow directly between users' personal wallets. The platform itself cannot access users' funds, which ensures that users' assets are always under their control.
Through blockchain technology, BitPower not only provides high-yield investment opportunities, but also provides a secure, transparent and efficient financial platform for users around the world. It is reshaping the financial industry and unlocking the huge potential of cryptocurrency for users. Whether it is individual investors or enterprises, BitPower provides them with a trustworthy investment option.
In short, BitPower is leading a new trend in cryptocurrency investment through its innovative revenue mechanism, transparent smart contract technology, and decentralized trading model. It not only brings considerable returns to users, but also provides them with unprecedented financial freedom and security. In the future, with the continuous development of blockchain technology, BitPower will continue to shine in the world of cryptocurrency. | pingd_iman_9228b54c026437 | |
1,910,099 | Transform Your Space with Expertise: Interior Designer in Noida | Discover the best interior designer in Noida for your home or office. From conceptualization to... | 0 | 2024-07-03T12:04:24 | https://dev.to/quartier_studio_75ca237b7/transform-your-space-with-expertise-interior-designer-in-noida-50kd | Discover the best [interior designer in Noida ](url)for your home or office. From conceptualization to execution, our skilled professionals specialize in creating personalized interiors that reflect your style and enhance functionality. Contact us today for a consultation and turn your space into a masterpiece.
| quartier_studio_75ca237b7 | |
1,910,098 | Generative AI: Transforming Industries and Driving Sustainable Innovation | 1. Introduction Generative AI is rapidly transforming various industries by... | 27,673 | 2024-07-03T12:03:37 | https://dev.to/rapidinnovation/generative-ai-transforming-industries-and-driving-sustainable-innovation-hb1 | ## 1\. Introduction
Generative AI is rapidly transforming various industries by providing
innovative solutions and enhancing creative processes. This technology, which
encompasses everything from natural language processing to image generation,
is not just a tool for automating tasks but is also becoming a fundamental
aspect of creating new content and solving complex problems.
## 2\. Understanding Generative AI
### 2.1. Definition and Core Concepts
Generative AI refers to the subset of artificial intelligence focused on
creating new content, whether that be text, images, audio, or other media
forms. This technology has the potential to revolutionize industries by
providing more efficient methods of content creation, personalized
experiences, and deeper insights into data analysis.
### 2.2. Evolution of Generative AI
Generative AI has evolved from simple algorithms to complex systems capable of
generating text, images, and even music that can mimic human creativity. Key
milestones include the development of Generative Adversarial Networks (GANs)
and Transformer models like GPT.
### 2.3. Key Technologies Powering Generative AI
Machine learning models, particularly deep learning models like CNNs and RNNs,
are at the heart of generative AI, enabling it to process and learn from data
to generate new content.
Neural networks, modeled after the human brain, recognize patterns in data and
are fundamental in clustering and classifying information, making them
essential for generative AI applications.
## 3\. The Role of Generative AI in Sustainable Innovation
### 3.1. Enhancing Product Development
Generative AI enables rapid and cost-effective innovation cycles by
automatically generating design alternatives and improving the accuracy of
simulations used in product testing.
### 3.2. Optimizing Resource Management
Generative AI optimizes resource management by predicting material needs,
enhancing data center efficiency, and improving agricultural practices through
precise resource allocation.
### 3.3. Improving Energy Efficiency
Generative AI enhances energy efficiency by optimizing HVAC systems, fuel
consumption in vehicles, and energy demand prediction in utility sectors.
## 4\. Case Studies: Generative AI in Action
### 4.1. Automotive Industry
Generative AI is transforming the automotive industry by optimizing vehicle
design for fuel efficiency, enhancing autonomous driving technology, and
integrating digital technology into vehicle operations.
### 4.2. Pharmaceutical Industry
In the pharmaceutical industry, AI accelerates drug discovery, enhances
personalized medicine, and improves drug delivery systems, leading to more
effective treatments.
### 4.3. Energy Sector
Generative AI optimizes solar energy systems by improving PV cell technology,
panel placement, and integrating advanced energy storage solutions.
Predictive maintenance in wind energy uses AI to forecast and prevent
equipment failures, reducing downtime and maintenance costs.
## 5\. Challenges and Ethical Considerations
### 5.1. Data Privacy and Security
Protecting sensitive information is crucial as data breaches and cyber threats
become more sophisticated. Adhering to regulations like GDPR and implementing
best practices is essential.
### 5.2. Bias and Fairness in AI Models
Combating bias in AI models requires diverse data sets, continuous testing,
and transparency to ensure fairness and build trust.
### 5.3. Regulatory Compliance
Adhering to laws and regulations ensures AI systems operate safely, ethically,
and legally, involving both legal and ethical considerations.
## 6\. Future Trends and Predictions for 2024
### 6.1. Advancements in AI Algorithms
2024 will see significant advancements in AI algorithms, driving smarter and
more efficient solutions across various sectors.
### 6.2. Integration with Other Emerging Technologies
AI will increasingly integrate with IoT, blockchain, and AR, creating hybrid
systems that solve complex problems more effectively.
### 6.3. Broader Adoption Across Industries
Advanced technologies will see broader adoption across industries,
transforming service delivery and customer experience in healthcare,
automotive, and finance.
## 7\. Conclusion
The exploration of advanced technologies illustrates a clear trend towards
digital transformation, driving significant improvements in business
operations and societal outcomes. Embracing this change is essential for
businesses aiming to remain competitive.
## 8\. References
IBM Watson Health: <https://www.ibm.com/watson-health>
<https://www.ibm.com/watson-health>
Automotive News: <https://www.autonews.com/>
<https://www.autonews.com/>
Financial Technology News: <https://www.fintechfutures.com/>
<https://www.fintechfutures.com/>
📣📣Drive innovation with intelligent AI and secure blockchain technology! Check
out how we can help your business grow!
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development/blockchain-app-development-company-in-usa) [AI
Development](https://www.rapidinnovation.io/ai-software-development-company-
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## URLs
* <https://www.rapidinnovation.io/post/sustainable-innovation-with-generative-ai-2024-technologies>
## Hashtags
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| rapidinnovation | |
1,910,097 | The Benefits of Cloud-Based Business Analytics Solutions | Introduction In today's fast-paced business environment, the ability to quickly and efficiently... | 0 | 2024-07-03T12:01:12 | https://dev.to/sganalytics/the-benefits-of-cloud-based-business-analytics-solutions-4h6n | business, analytics, solutions, cloud | Introduction
In today's fast-paced business environment, the ability to quickly and efficiently analyze data is crucial for making informed decisions and staying competitive. Traditional on-premises business analytics solutions often come with significant limitations, such as high costs, scalability issues, and complex maintenance requirements. Cloud-based [business analytics](https://www.sganalytics.com/data-management-analytics/business-analytics-consulting-services/) solutions, however, offer a compelling alternative. This blog will explore the numerous benefits of leveraging cloud-based business analytics solutions and how they can transform your organization's data-driven decision-making process.
1. Cost Efficiency
One of the most significant advantages of cloud-based [business analytics solutions](https://us.sganalytics.com/data-management-analytics-services/business-analytics-solutions/) is cost efficiency. Traditional on-premises solutions require substantial upfront investments in hardware, software, and infrastructure. Additionally, ongoing maintenance, upgrades, and IT support can be costly. Cloud-based solutions, on the other hand, operate on a subscription-based model, allowing businesses to pay only for the resources they use. This model eliminates the need for expensive hardware and reduces IT overhead, making advanced analytics accessible to organizations of all sizes.
2. Scalability and Flexibility
Cloud-based business analytics solutions offer unparalleled scalability and flexibility. As your business grows and your data needs evolve, cloud solutions can easily scale to accommodate increased data volumes and more complex analytical requirements. Whether you need to analyze data from multiple sources, run more sophisticated queries, or support a growing number of users, cloud-based solutions can seamlessly adjust to your needs without the need for significant infrastructure changes.
3. Faster Deployment and Time-to-Value
Implementing traditional on-premises business analytics solutions can be a time-consuming process, often taking months or even years to deploy fully. Cloud-based solutions, however, can be deployed quickly, allowing organizations to start analyzing data and gaining insights within days or weeks. This rapid deployment accelerates time-to-value, enabling businesses to quickly realize the benefits of their analytics investments and make data-driven decisions faster.
4. Enhanced Collaboration and Accessibility
Cloud-based business analytics solutions enable enhanced collaboration and accessibility. With data and analytics tools hosted in the cloud, employees can access the information they need from anywhere, at any time, using any device with an internet connection. This accessibility fosters collaboration across teams and departments, allowing stakeholders to work together more effectively, share insights, and make informed decisions regardless of their physical location.
5. Advanced Analytics Capabilities
Cloud-based solutions often come with advanced analytics capabilities, such as artificial intelligence (AI), machine learning (ML), and real-time data processing. These advanced tools enable businesses to perform sophisticated analyses, uncover hidden patterns, and gain deeper insights from their data. By leveraging AI and ML, organizations can automate data analysis, predict future trends, and make proactive decisions, driving innovation and competitive advantage.
6. Improved Data Security and Compliance
Data security and compliance are critical concerns for businesses of all sizes. Cloud-based business analytics providers invest heavily in security measures to protect their clients' data. These measures often include encryption, multi-factor authentication, and regular security audits. Additionally, many cloud providers offer compliance with industry standards and regulations, such as GDPR, HIPAA, and SOC 2, ensuring that your data is handled in accordance with legal and regulatory requirements.
7. Seamless Integration with Other Systems
Cloud-based business analytics solutions can seamlessly integrate with other cloud-based and on-premises systems, such as customer relationship management (CRM) systems, enterprise resource planning (ERP) systems, and various data sources. This integration capability allows businesses to create a unified data ecosystem, breaking down data silos and providing a holistic view of their operations. With integrated data, organizations can perform more comprehensive analyses and derive insights that drive strategic decision-making.
Conclusion
Cloud-based business analytics solutions offer numerous benefits, from cost efficiency and scalability to enhanced collaboration and advanced analytics capabilities. By leveraging the power of the cloud, businesses can quickly deploy analytics solutions, gain deeper insights from their data, and make more informed decisions. As the business landscape continues to evolve, cloud-based business analytics solutions will play an increasingly vital role in helping organizations stay competitive, innovate, and thrive in a data-driven world. Embrace the cloud to unlock the full potential of your business analytics initiatives and drive your organization forward.
| sganalytics |
1,910,096 | Using Firebase with Communication APIs | Explore how to integrate Firebase with Vonage APIs in our latest developer podcast. Learn about authentication, hosting, and more. | 25,852 | 2024-07-03T12:00:25 | https://codingcat.dev/podcast/using-firebase-with-communication-apis | webdev, javascript, beginners, podcast |
Original: https://codingcat.dev/podcast/using-firebase-with-communication-apis
{% youtube https://youtu.be/deAI0ZMdTrw %}
## Introduction and Background of Guest
* Amanda's Background: Amanda discusses her educational journey, starting from her early exposure to computers due to her father's work with assembly and Fortran, to studying computer science in Brazil and the UK. She also shares her initial aspirations to become a professor before transitioning into a developer role.
* Balancing Career and Parenthood: Amanda talks about her experience as a first-time mom while working in developer relations, touching on the challenges and strategies she uses to balance both responsibilities.
## Early Career and Education
* Early Exposure to Tech: Amanda's father played a significant role in her tech journey, exposing her to computers at a young age and encouraging her interest in tech.
* Educational Journey: Amanda elaborates on her academic path, including the challenges of studying math and moving from Brazil to the UK to complete her degree. She also discusses the multicultural environment at her Brazilian university.
## Professional Development and Career Growth
* Transition to Dev Role: Amanda shares her transition from academia to a developer role, learning Ruby on Rails on the job, and her preference for JavaScript.
* Post-Graduation Studies: During the pandemic, Amanda pursued a post-graduation degree, which brought her a sense of fulfillment and advanced her knowledge in the field.
## Community Engagement and Contributions
* Meetup Involvement: Upon moving to the UK, Amanda became actively involved in local meetups, eventually becoming an organizer and Women Techmakers ambassador.
* Hosting Events: Amanda organizes and hosts events such as "Women Techmakers Coffee and Code," fostering community engagement and knowledge sharing.
## Working at Vonage
* Joining Vonage: Amanda joined Vonage during the pandemic and discusses the international and supportive nature of her team. She also highlights the various roles and projects she has been involved in.
* Learning and Growth: Amanda emphasizes the diverse opportunities for learning and growth at Vonage, including her work with network APIs and contributing to product development.
## Using Firebase with Communication APIs
* Demo Overview: Amanda presents a demo on using Firebase with the Vonage Verify API for account recovery, showcasing a flow where users verify their identity via SMS to reset their password.
* Technical Details: The demo involves Firebase Functions, Firestore as the NoSQL database, and Vonage communication services to check SIM swap details and send verification codes.
## Setting Up Firebase and Integration with Vonage
* Firebase Setup: Amanda explains the process of setting up Firebase, including creating a project, configuring Google Cloud resources, and setting up the Firestore database.
* Integrating Vonage APIs: Details on setting up a Vonage account, generating keys, and using the Verify API for sending one-time codes are provided. Amanda also discusses handling environment variables and testing the setup with Firebase emulators.
## Content Creation and Community Contributions
* Blog Posts and Videos: Amanda shares various blog posts and videos she has created on topics like appointment schedulers, sending messages with Firebase, and migrating from Firebase generation one to two.
* Firebase Extensions: Amanda talks about contributing to Firebase extensions and the types of extensions available, such as multi-party video calls and message APIs from Vonage.
## Future Events and Conferences
* Upcoming Conferences: Amanda expresses her excitement about attending Google IO Connect in Berlin, mentioning her preference for smaller, more interactive events.
* Community Engagement: She discusses the importance of accessibility and how attending past conferences has profoundly impacted her understanding and implementation of inclusive design in her projects.
## Conclusion
* Community Involvement: Amanda invites viewers to join the Vonage developer community on Slack for further interaction and support.
* Final Thoughts: The session concludes with Amanda and Alex discussing the significance of professional networks, continuous learning, and the importance of community support in the tech industry. | codercatdev |
1,910,095 | The Crucial Role of Data Integration in Modern Enterprises | Data integration is the linchpin of modern enterprise operations, facilitating the seamless flow of... | 0 | 2024-07-03T11:59:58 | https://dev.to/linda0609/the-crucial-role-of-data-integration-in-modern-enterprises-2dcf | Data integration is the linchpin of modern enterprise operations, facilitating the seamless flow of information across various systems and departments. It involves consolidating data from disparate sources to enhance comprehension, streamline analysis, and support informed decision-making. This process is foundational for optimizing operational efficiencies, improving customer experiences, and driving strategic initiatives.
Understanding Data Integration Processes
Data integration encompasses several key processes:
1. Data Ingestion : Gathering data from multiple sources, including databases, applications, and external APIs.
2. Data Preparation : Cleaning, transforming, and enriching raw data to ensure consistency and usability.
3. Insight Extraction : Analyzing integrated data to derive actionable insights that drive business value.
These processes are typically facilitated through Extract, Transform, Load (ETL) or Extract, Load, Transform (ELT) pipelines, tailored to meet specific organizational needs and regulatory requirements.
Challenges and Solutions in Data Integration
Despite its critical importance, data integration faces several significant challenges. Let’s delve into these issues and explore how consulting experts recommend overcoming them.
1. Navigating Data Quality Challenges
Integrating data from diverse sources increases the risk of inconsistencies and inaccuracies. Poor data quality can undermine decision-making and operational efficiency. To mitigate these risks, organizations should implement robust data quality management (DQM) practices. This includes continuous monitoring, cleansing, and validation of data to ensure accuracy, completeness, and consistency. Consulting experts advocate for establishing data governance frameworks and implementing automated data quality checks to maintain high standards throughout the data lifecycle.
For example, leveraging [data lifecycle management](https://us.sganalytics.com/data-solutions/data-lifecycle-management/) can significantly enhance dataset integrity, making integration processes smoother. By evaluating relevance, freshness, and consistency, organizations can prevent inaccurate data ingestion, especially from unreliable sources such as social media or questionable news outlets. Implementing ecosystems that constantly monitor and recheck data quality ensures long-term accuracy and reliability.
2. Addressing Infrastructure and Technology Constraints
Legacy systems often present significant bottlenecks in data integration efforts. These outdated systems may lack the scalability, agility, and compatibility required to handle large volumes of data and support modern technologies like IoT and big data analytics. Upgrading both hardware and software is crucial to overcoming these infrastructure challenges. This includes adopting cloud-based solutions and implementing scalable data storage and processing architectures.
Consulting experts emphasize the importance of investing in robust IT infrastructure that supports agile data integration capabilities while enhancing security and resilience against cyber threats. Modernizing infrastructure to accommodate advancements like 5G networks and large language models will ensure seamless [data operations](Data integration is the linchpin of modern enterprise operations, facilitating the seamless flow of information across various systems and departments. It involves consolidating data from disparate sources to enhance comprehension, streamline analysis, and support informed decision-making. This process is foundational for optimizing operational efficiencies, improving customer experiences, and driving strategic initiatives.
Understanding Data Integration Processes
Data integration encompasses several key processes:
1. Data Ingestion : Gathering data from multiple sources, including databases, applications, and external APIs.
2. Data Preparation : Cleaning, transforming, and enriching raw data to ensure consistency and usability.
3. Insight Extraction : Analyzing integrated data to derive actionable insights that drive business value.
These processes are typically facilitated through Extract, Transform, Load (ETL) or Extract, Load, Transform (ELT) pipelines, tailored to meet specific organizational needs and regulatory requirements.
Challenges and Solutions in Data Integration
Despite its critical importance, data integration faces several significant challenges. Let’s delve into these issues and explore how consulting experts recommend overcoming them.
1. Navigating Data Quality Challenges
Integrating data from diverse sources increases the risk of inconsistencies and inaccuracies. Poor data quality can undermine decision-making and operational efficiency. To mitigate these risks, organizations should implement robust data quality management (DQM) practices. This includes continuous monitoring, cleansing, and validation of data to ensure accuracy, completeness, and consistency. Consulting experts advocate for establishing data governance frameworks and implementing automated data quality checks to maintain high standards throughout the data lifecycle.
For example, leveraging data lifecycle management can significantly enhance dataset integrity, making integration processes smoother. By evaluating relevance, freshness, and consistency, organizations can prevent inaccurate data ingestion, especially from unreliable sources such as social media or questionable news outlets. Implementing ecosystems that constantly monitor and recheck data quality ensures long-term accuracy and reliability.
2. Addressing Infrastructure and Technology Constraints
Legacy systems often present significant bottlenecks in data integration efforts. These outdated systems may lack the scalability, agility, and compatibility required to handle large volumes of data and support modern technologies like IoT and big data analytics. Upgrading both hardware and software is crucial to overcoming these infrastructure challenges. This includes adopting cloud-based solutions and implementing scalable data storage and processing architectures.
Consulting experts emphasize the importance of investing in robust IT infrastructure that supports agile data integration capabilities while enhancing security and resilience against cyber threats. Modernizing infrastructure to accommodate advancements like 5G networks and large language models will ensure seamless data operations and mitigate risks associated with physical damage or maintenance downtimes.
3. Ensuring Timely Data Availability
Delays in data availability can hinder decision-making and operational efficiency. Geographically dispersed teams and stakeholders may face connectivity issues or encounter delays in accessing critical data. Automation of data workflows, real-time data synchronization, and optimizing data transmission protocols are effective strategies for mitigating these challenges.
Consulting experts recommend leveraging technologies such as data virtualization and distributed caching to ensure timely access to accurate and up-to-date information across the organization. Additionally, training employees to maximize their efficiency and implementing AI-driven automation can reduce data acquisition, categorization, and transformation delays, ensuring near-real-time data integration.
4. Mitigating Vendor Lock-ins
Dependency on proprietary data integration platforms or tools can limit flexibility and increase operational costs. Vendor lock-ins occur when switching providers is cumbersome due to proprietary formats or restricted export capabilities. Organizations should prioritize interoperability and compatibility when selecting data integration solutions. Open-source frameworks and standards-based APIs enable seamless data exchange and facilitate easier migration between platforms.
Consulting experts advise conducting thorough vendor evaluations and negotiating flexible contract terms to avoid vendor lock-ins and maintain control over data integration processes. Auditing potential vendors' tools and verifying their documentation on data import, export, and bulk transfer options can safeguard against inconvenient and restrictive lock-ins.
5. Managing Ethical and Legal Considerations
Data integration involves handling sensitive information and complying with regulatory requirements such as data privacy laws (e.g., GDPR, CCPA) and industry-specific regulations (e.g., HIPAA for healthcare). Ensuring data security, protecting customer privacy, and adhering to ethical data practices are paramount. Collaboration with legal experts ensures adherence to regional directives and industry guidelines, fostering a governance culture that supports ethical data practices and regulatory compliance.
Confidentiality of investor communication and stakeholders’ privacy rights are two components of legal risk exposure due to enterprise data integration. Consulting experts stress the importance of transparency, accountability, and proactive compliance measures to navigate complex regulatory landscapes effectively. This approach helps improve business resilience and enhances trust with customers who value ethical data operations.
Insights and Best Practices from Consulting Experts
Consulting experts provide invaluable insights and best practices for overcoming data integration challenges:
- Embrace Agile Data Strategies : Adopt agile methodologies and iterative approaches to data integration to respond quickly to evolving business needs and technological advancements.
- Invest in Data Governance : Establish comprehensive data governance frameworks to ensure data integrity, compliance, and accountability across the organization.
- Harness Advanced Analytics : Leverage advanced analytics, machine learning, and AI technologies to derive actionable insights from integrated data and drive innovation.
- Foster a Culture of Collaboration : Encourage collaboration between IT, data management, and business teams to align data integration efforts with strategic objectives and enhance cross-functional synergy.
Conclusion
In conclusion, data integration plays a pivotal role in enabling organizations to harness the full potential of their data assets. By addressing key challenges such as data quality management, infrastructure constraints, and regulatory compliance, businesses can optimize operational efficiencies and bolster strategic decision-making capabilities. Collaboration with experienced consulting experts facilitates the development of robust data integration frameworks aligned with organizational objectives, ensuring competitive advantage and sustainability in a data-centric economy.
Embracing transparent, efficient, and ethical data practices not only mitigates risks but also enhances stakeholder trust and regulatory compliance, positioning organizations as leaders in their respective industries. Adopting data integration as a strategic imperative empowers businesses to thrive amidst rapid digital advancements, fostering innovation and growth in an increasingly interconnected global marketplace.) and mitigate risks associated with physical damage or maintenance downtimes.
3. Ensuring Timely Data Availability
Delays in data availability can hinder decision-making and operational efficiency. Geographically dispersed teams and stakeholders may face connectivity issues or encounter delays in accessing critical data. Automation of data workflows, real-time data synchronization, and optimizing data transmission protocols are effective strategies for mitigating these challenges.
Consulting experts recommend leveraging technologies such as data virtualization and distributed caching to ensure timely access to accurate and up-to-date information across the organization. Additionally, training employees to maximize their efficiency and implementing AI-driven automation can reduce data acquisition, categorization, and transformation delays, ensuring near-real-time data integration.
4. Mitigating Vendor Lock-ins
Dependency on proprietary data integration platforms or tools can limit flexibility and increase operational costs. Vendor lock-ins occur when switching providers is cumbersome due to proprietary formats or restricted export capabilities. Organizations should prioritize interoperability and compatibility when selecting data integration solutions. Open-source frameworks and standards-based APIs enable seamless data exchange and facilitate easier migration between platforms.
Consulting experts advise conducting thorough vendor evaluations and negotiating flexible contract terms to avoid vendor lock-ins and maintain control over data integration processes. Auditing potential vendors' tools and verifying their documentation on data import, export, and bulk transfer options can safeguard against inconvenient and restrictive lock-ins.
5. Managing Ethical and Legal Considerations
Data integration involves handling sensitive information and complying with regulatory requirements such as data privacy laws (e.g., GDPR, CCPA) and industry-specific regulations (e.g., HIPAA for healthcare). Ensuring data security, protecting customer privacy, and adhering to ethical data practices are paramount. Collaboration with legal experts ensures adherence to regional directives and industry guidelines, fostering a governance culture that supports ethical data practices and regulatory compliance.
Confidentiality of investor communication and stakeholders’ privacy rights are two components of legal risk exposure due to enterprise data integration. Consulting experts stress the importance of transparency, accountability, and proactive compliance measures to navigate complex regulatory landscapes effectively. This approach helps improve business resilience and enhances trust with customers who value ethical data operations.
Insights and Best Practices from Consulting Experts
Consulting experts provide invaluable insights and best practices for overcoming data integration challenges:
- Embrace Agile Data Strategies : Adopt agile methodologies and iterative approaches to data integration to respond quickly to evolving business needs and technological advancements.
- Invest in Data Governance : Establish comprehensive data governance frameworks to ensure data integrity, compliance, and accountability across the organization.
- Harness Advanced Analytics : Leverage advanced analytics, machine learning, and AI technologies to derive actionable insights from integrated data and drive innovation.
- Foster a Culture of Collaboration : Encourage collaboration between IT, data management, and business teams to align data integration efforts with strategic objectives and enhance cross-functional synergy.
Conclusion
In conclusion, data integration plays a pivotal role in enabling organizations to harness the full potential of their data assets. By addressing key challenges such as data quality management, infrastructure constraints, and regulatory compliance, businesses can optimize operational efficiencies and bolster strategic decision-making capabilities. Collaboration with experienced consulting experts facilitates the development of robust data integration frameworks aligned with organizational objectives, ensuring competitive advantage and sustainability in a data-centric economy.
Embracing transparent, efficient, and ethical data practices not only mitigates risks but also enhances stakeholder trust and regulatory compliance, positioning organizations as leaders in their respective industries. Adopting data integration as a strategic imperative empowers businesses to thrive amidst rapid digital advancements, fostering innovation and growth in an increasingly interconnected global marketplace. | linda0609 | |
1,910,094 | Concepts of Qualitative and Quantitative Market Research | Qualitative Market Research Definition: Qualitative market research focuses on... | 0 | 2024-07-03T11:59:09 | https://dev.to/sganalytics/concepts-of-qualitative-and-quantitative-market-research-3k7a | qualitative, quantitative, market, research | ## Qualitative Market Research
Definition:
[Qualitative market research](https://www.sganalytics.com/market-research/qualitative-market-research/) focuses on understanding the underlying reasons, opinions, and motivations behind consumer behaviors. It provides insights into the problem and helps to develop ideas or hypotheses for potential quantitative research.
Methods:
Focus Groups:
Small groups of people (typically 6-10) discuss a product, service, or concept.
A moderator guides the discussion to uncover deeper insights.
In-Depth Interviews:
One-on-one interviews that explore individual experiences and opinions.
These interviews can be conducted face-to-face, over the phone, or via video calls.
Ethnographic Research:
Researchers observe consumers in their natural environment.
This method helps understand how products are used in real-life contexts.
Case Studies:
Detailed investigations of a single entity (individual, group, or organization) to explore the causes of underlying principles.
Content Analysis:
Analyzing written, spoken, or visual communication to identify patterns or themes.
Advantages:
Provides in-depth understanding of consumer behavior.
Can uncover unexpected insights.
Flexible and adaptable to explore new areas of interest.
Disadvantages:
Time-consuming and often more expensive.
Findings may not be generalizable to the larger population.
Subject to researcher bias.
## Quantitative Market Research
Definition:
[Quantitative market research](https://www.sganalytics.com/market-research/quantitative-market-research/) involves the collection of numerical data that can be quantified and used to identify patterns and make predictions. It aims to measure the market phenomena and answer questions like "how many," "how much," and "how often."
Methods:
Surveys:
Structured questionnaires distributed to a large sample size.
Can be conducted online, by phone, by mail, or in person.
Experiments:
Controlled studies that manipulate one or more variables to determine their effect on an outcome.
Often used to test hypotheses.
Observational Research:
Observing consumer behavior in a structured manner, often with the aid of technological tools.
Can be done in natural settings or in simulated environments.
Secondary Data Analysis:
Analyzing existing data collected for other purposes.
Sources can include government reports, market studies, and previous research findings.
Longitudinal Studies:
Conducting research over a long period to track changes and developments over time.
Advantages:
Provides data that is statistically reliable and generalizable.
Can identify trends and correlations.
Useful for making predictions and informed decisions.
Disadvantages:
Lacks the depth and context provided by qualitative research.
Can be costly and time-consuming if large sample sizes are required.
The rigidity of structured questionnaires can limit the scope of insights.
Combining Qualitative and Quantitative Research
Many market research projects use a combination of both qualitative and quantitative methods to gain a comprehensive understanding. This approach is known as mixed-methods research. Here’s how they complement each other:
Exploratory Phase (Qualitative): Helps identify key variables and generate hypotheses.
Measurement Phase (Quantitative): Tests the hypotheses and measures the variables identified.
Interpretative Phase (Qualitative): Adds context to the quantitative data, explaining the "why" behind the numbers.
Conclusion
Both qualitative and quantitative market research have their own strengths and limitations. By understanding and effectively using both methods, businesses can gain deeper and more actionable insights into their markets and make more informed strategic decisions. | sganalytics |
1,910,052 | Easy задача с собеседования в Facebook: Contains Duplicate || | Задача. Дан массив целых чисел nums и число k. Нужно вернуть true, если в массиве есть два... | 0 | 2024-07-03T11:59:08 | https://dev.to/faangmaster/easy-zadacha-s-sobiesiedovaniia-v-facebook-contains-duplicate--4ief | interview, algorithms, faang | ## Задача.
Дан массив целых чисел nums и число k. Нужно вернуть true, если в массиве есть два уникальных индекса i и j, такие что nums[i] == nums[j] и abs(i-j)<=k.
Ссылка на leetcode: https://leetcode.com/problems/contains-duplicate-ii/
Примеры:
Input: nums = [1,2,3,1], k = 3
Output: true
nums[0] == nums[3] abs(3-0) <= k
Input: nums = [1,2,3,1,2,3], k = 2
Output: false
Одинаковые элементы есть, но расстояние между ними больше 2.
## Решение.
Переформулируем задачу более понятным языком:
> Нам нужно проверить, есть ли среди элементов массива повторяющиеся элементы, которые находятся на расстоянии меньше или равном
> k друг от друга.
### Brute force
Очевидное решение, которое приходит в голову - это сравнить все пары элементов в массиве, если они равны, вычислить расстояние между ними по индексам, если это расстояние меньше или равно k - вернуть true.
**Как перебрать все возможные пары элементов в массиве?**
**Ответ**: двумя вложенными циклами, причем вложенный цикл будет не от нуля, а от i + 1, чтобы не сравнивать элементы сами с собой, а также не перебирать одни и теже пары два раза (вроде пар (nums[1], nums[2]) и (nums[2], nums[1]), т.к. это по сути та же самая пара):
```java
for (int i = 0; i < nums.length; i++) {
for (int j = i + 1; j < nums.length; j++) {
//проверяем пару nums[i] и nums[j]
}
```
Дополним этот код проверкой, что у нас элементы пары равны между собой и расстояние между ними меньше или равно k:
```java
public boolean containsNearbyDuplicate(int[] nums, int k) {
for (int i = 0; i < nums.length; i++) {
for (int j = i + 1; j < nums.length; j++) {
if (nums[i] == nums[j] && j - i <= k) {
return true;
}
}
}
return false;
}
```
Временная сложность такого решения - **O(n^2)**, т.к. у нас 2 вложенных цикла по массиву. Сложность по памяти - **O(1)**.
**Sliding Window**
Можем ли мы улучшить наше решение по временной сложности? Да, мы можем применить подход, который называется **Sliding Window (скользящее окно).**
Для этого нам нужно заметить, что нас интересует **наличие дубликата на расстоянии меньше или равном k от произвольного текущего элемента массива.** Т.е. мы можем **всего один раз проитерироваться** по массиву и хравнить в памяти для быстрого доступа только k предыдущих элементов массива.
Например, для массива:
и k = 3, будем хранить предыдущие 3 элемента массива в некой структуре данных (скользящем окне).
Допустим, при итерациях вдоль массива мы достигли элемента с индексом i = 3:
Тогда в Sliding Window мы будем хранить предыдущие 3 элемента массива. Нам нужно проверить, есть ли текущий элемент среди элементов помещенных в Sliding Window. Если есть, то нужно вернуть true в качестве результата работы функции. Если нет, то перейдем к следующей итерации цикла и обновим Sliding Window, чтобы хранить там предыдущие 3 элемента массива:
И снова нам нужно повторить проверку, есть ли среди элементов в Sliding Window текущий элемент. В данном случае есть - поэтому вернем true.
Хорошо, алгоритм понятен. Как нам реализовать это в коде?
Т.к. нам нужно **иметь возможность быстро проверить наличие или отсутствие элемента в Sliding Window**, нам нужно использовать **что-то типа HashMap**. Но в данном случае нам будет достаточно **HashSet**, т.к. нам надо хранить только ключи, без значений.
```java
Set<Integer> slidingWindow = new HashSet<>();
```
По мере итераций, нам надо удалять из Sliding Window самый первый элемент и добавлять текущий. Самый первый элемент, это элемент на расстоянии k от текущего.
Тогда получим:
```java
Set<Integer> slidingWindow = new HashSet<>();
for(int i = 0 ; i < nums.length; i++) {
//удаляем первый элемент
//элемент на расстоянии k по индексам от текущего
slidingWindow.remove(nums[i - k - 1]);
...
//Добавляем текущий/новый элемент
slidingWindow.add(nums[i]);
}
```
Т.к. мы вычисляем элемент на расстоянии k от текущего по формуле i - k - 1, то нам надо добавить проверку, чтобы мы не вышли за пределы массива:
```java
for(int i = 0 ; i < nums.length; i++) {
if (i > k) {
slidingWindow.remove(nums[i - k - 1]);
}
....
slidingWindow.add(nums[i]);
}
```
В таком виде, Sliding Window будет хранить только k предыдущих элементов массива. Теперь осталось только добавить проверку, что в Sliding Window есть текущий элемент:
```java
public boolean containsNearbyDuplicate(int[] nums, int k) {
Set<Integer> slidingWindow = new HashSet<>();
for(int i = 0 ; i < nums.length; i++) {
if (i > k) {
slidingWindow.remove(nums[i - k - 1]);
}
if (slidingWindow.contains(nums[i])) {
return true;
}
slidingWindow.add(nums[i]);
}
return false;
}
```
Временная сложность такого решения - **O(n)**. Сложность по памяти - **O(k)**, т.к. мы дополнительно храним k предыдущих элементов в Sliding Window.
| faangmaster |
1,910,092 | BitPower Smart Contract: | BitPower is a decentralized energy trading platform based on blockchain technology, aiming to improve... | 0 | 2024-07-03T11:55:00 | https://dev.to/xin_l_9aced9191ff93f0bf12/bitpower-smart-contract-4gml |
BitPower is a decentralized energy trading platform based on blockchain technology, aiming to improve the transparency and efficiency of the energy market. At its core are smart contracts that automate energy transactions through pre-written code. These smart contracts can not only automate the transaction process and reduce middlemen, but also ensure the fairness and security of transactions. BitPower’s smart contracts have the following features:
Automated transactions: Smart contracts can automatically match the needs of buyers and sellers, complete the entire process of energy transactions, and reduce human intervention and errors.
Efficient and transparent: All transactions are recorded on the blockchain, which is open, transparent and cannot be tampered with, increasing the credibility and security of transactions.
Reduced costs: By eliminating intermediaries, smart contracts significantly reduce transaction costs and improve market efficiency.
Programmability: Users can customize smart contracts according to their own needs to achieve diversified transaction models and complex business logic.
The application of BitPower smart contracts is expected to reshape the traditional energy market and promote the development of energy transactions in a more intelligent and sustainable direction. | xin_l_9aced9191ff93f0bf12 | |
1,852,732 | Cheat Sheet for React Bootstrap. Layout and Forms | Table of contents Breakpoints Grid system Container Row Col Stacks Forms Form... | 27,069 | 2024-07-03T11:54:08 | https://dev.to/jsha/cheat-sheet-for-react-bootstrap-layout-and-forms-5d75 | ## Table of contents
1. [Breakpoints](#breakpoints)
2. [Grid system](#grid-system)
3. [Container](#container)
4. [Row](#row)
5. [Col](#col)
6. [Stacks](#stacks)
8. [Forms](#forms)
9. [Form props](#form-props)
10. [Form.Label props](#form.label-props)
11. [fieldset props](#fieldset-props)
12. [Form.Control props](#form.control-props)
13. [Form.Text props](#form.text-props)
14. [Form.Select](#form.select)
15. [Form.Check](#form.check)
16. [Floating labels](#floating-labels)
17. [Form Layout](#form-layout)
18. [Validation](#validation)
## Breakpoints
- **xs**(X-Small) <576px
- **sm**(Small) ≥576px
- **md**(Medium) ≥768px
- **lg**(Large) ≥992px
- **xl**(Extra large) ≥1200px
- **xxl**(Extra extra large) ≥1400px
## Grid system
### Container
- element with Bootstrap's `container` class:
```html
<Container style={{border: '1px solid black'}}>
<Row>
<Col>1 of 1</Col>
</Row>
</Container>
```
#### Container props
- **fluid={true/'sm'/'md'/'lg'/'xl'/'xxl'}** - Container fills all available horizontal space until the specified breakpoint;
### Row
#### Row props
- **xs={number/'auto'}** - number indicates how many columns can fit in one row on extra small devices;
- **{breakpoint}={number/'auto'}**;
### Col
`Row` is a flexbox with 12 template columns, so we can set how many template columns each `Col` occupies.
#### Col props
- **{breakpoint}={number/'auto'}** - number indicates how many template columns Col can occupy in one row;
- **{breakpoint}={span: number, offset: number, order: {"first"/"last"/number}}** - `span` indicates number of template columns to occupy, `offset` indicates how many template columns to omit before starting Col.
## Stacks
Full-width flexbox with column direction by default:
```html
<Stack direction="horizontal" gap={3}>
<div className="p-2">First item</div>
<div className="p-2 ms-auto">Second item</div>
<div className="p-2">Third item</div>
</Stack>
```
### Stack props
- **gap={1-5}** - space between items;
- **direction="horizontal"** - makes horizontal stacked flexbox;
## Forms
```html
<Form>
<fieldset>
<Form.Group className="mb-3" controlId="formBasicEmail">
<Form.Label>Email address</Form.Label>
<Form.Control
type="email"
placeholder="Enter email"
/>
<Form.Text muted>
We'll never share your email with anyone else.
</Form.Text>
</Form.Group>
<Form.Group>
<Form.Label htmlFor="inputPassword">Password</Form.Label>
<Form.Control
type="password"
id="inputPassword"
aria-describedby="passwordHelpBlock"
/>
<Form.Text id="passwordHelpBlock" muted>
Your password must be 8-20 characters long, contain letters and numbers,
and must not contain spaces, special characters, or emoji.
</Form.Text>
</Form.Group>
</fieldset>
<Button variant="primary" type="submit">
Submit
</Button>
</Form>
```
- **Form.Group** - wrapper around label and input.
- **Form.Control** - renders `<input>` or `<textarea>`.
- **Form.Text** - form text below inputs, it can be help text, some restrictions for inputs.
> help text should be associated with the control using `aria-describedby`
### Form props
- **validated** - mark form as having been validated.
### Form.Label props
- **htmlFor={controlId}** - if label is not in `Form.Group` we should specify.
- **visuallyHidden** - hides the label visually while still allowing it to be accessible.
### fieldset props
- **disabled** - disabling all controls which were wrapped inside.
### Form.Control props
- **as={'input'|'textarea'|element}** - by default it's `input`;
- **size={'sm'|'lg'}** - input size variants;
- **htmlSize={number}** - number of characters that are visible. It's size attribute of the HTML `input`;
- **plaintext** - renders input as plain text. Usually used along side `readonly`;
- **readonly**;
- **disabled**;
- **value**;
- **onChange**;
- **type={string}**;
- **isValid**;
- **isInValid**.
### Form.Text props
- **muted** - add `text-muted` class.
### Form.Select
```html
<Form.Select aria-label="Default select example">
<option>Open this select menu</option>
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
</Form.Select>
```
#### Form.Select props
- **size={'sm'|'lg'}**;
- **htmlSize={number}**;
- **disabled**;
- **value**;
- **onChange**;
- **isValid**;
- **isInValid**.
### Form.Check
```html
<Form.Check
type='radio'
id='radio'
label='radio'
/>
```
We can implement toggle switch:
```html
<Form.Switch
id="custom-switch"
label="Check this switch"
/>
```
#### Form.Check with children
```html
<Form.Check type='radio' id='radio'>
<Form.Check.Input type='radio' isValid /> <Form.Check.Label>radio</Form.Check.Label>
<Form.Control.Feedback type="valid">
You did it!
</Form.Control.Feedback>
</Form.Check>
```
#### Form.Check props
- **inline** - groups controls horizontally;
- **reverse** - put checkboxes etc. on the opposite side;
- **disabled**;
- **title={str}**;
- **type={'radio'|'checkbox'|'switch'}**;
- **isValid**;
- **isInValid**;
- **feedback** - a message to display when the input is in a validation state;
- **feedbackType={'valid'|'invalid'}**.
#### Form.Check.Input props
- **type={'radio'|'checkbox'}**;
- **isValid**;
- **isInValid**;
### Floating labels
Labels floating over input fields.
```html
<FloatingLabel controlId="formBasicPassword" label="Password">
<Form.Control type="password" placeholder="Password" />
</FloatingLabel>
```
>`placeholder` in `<Form.Control>` is required since react-bootstrap uses `:placeholder-shown` pseudo-element.
#### FloattingLabel props
- **controlId={string}** - sets id and htmlFor;
- **label={string|node}** - form control label.
### Form Layout
#### Label and Control placed horizontally
```html
<Row>
<Form.Label column="lg" lg={2}>
Large Text
</Form.Label>
<Col>
<Form.Control size="lg" type="text" placeholder="Large text" />
</Col>
</Row>
<br />
<Row>
<Form.Label column lg={2}>
Normal Text
</Form.Label>
<Col>
<Form.Control type="text" placeholder="Normal text" />
</Col>
</Row>
```
### Validation
To "turn on" react-bootstrap validation style it's better to "turn off" built-in browser validator by adding `noValidate` in `Form`:
```javascript
const [validated, setValidated] = useState(false);
const handleSubmit = (e) => {
e.preventDefault();
const form = e.currentTarget;
if (form.checkValidity() === true) {
// submit logic
} else {
setValidated(true);
}
}
return(
<Form
onSubmit={handleSubmit}
noValidated
validated={validated}
>
// ...
</Form>
}
``` | jsha | |
1,843,892 | Cheat Sheet for React Bootstrap. Installation and components | Bootstrap Javascript is not recommended to use with React. React-Bootstrap creates each component as... | 27,069 | 2024-07-03T11:53:51 | https://dev.to/jsha/cheat-sheet-for-react-bootstrap-installation-and-components-4n43 | react, bootstrap | Bootstrap Javascript is not recommended to use with React. React-Bootstrap creates each component as a true React component so there won't be any conflict with React library.
## Table of contents
- [Installation and usage](#installation-and-usage)
- [**as** Prop API](#**as**-prop-api)
- [Theming](#theming)
- [Components](#components)
- [Accordion](#accordion)
- [Alerts](#alerts)
- [Badges](#badges)
- [Breadcrumbs](#breadcrumbs)
- [Buttons](#buttons)
- [Button group](#button-group)
- [Cards](#cards)
- [Carousels](#carousels)
- [Dropdowns](#dropdowns)
- [Images](#images)
- [List groups](#list-groups)
- [Modals](#modals)
- [Navs](#navs)
- [Navbars](#navbars)
- [Offcanvas](#offcanvas)
- [Progress bars](#progress-bars)
- [Spinners](#spinners)
- [Tables](#tables)
- [Tabs](#tabs)
- [Toasts](#toasts)
## Installation and usage
```bash
npm i react-bootstrap
```
If we don't want to customize Bootstrap CSS we can just include it using cdn, otherwise we should install vanilla bootstrap via package manager:
```bash
npm i bootstrap
```
Then we should import library in root module:
```javascript
import 'bootstrap/dist/css/bootstrap.min.css';
```
Importing Bootstrap CSS should be before importing css/scss files and React components if they use css/scss files.
To use react-bootstrap components we should import each individually where we need it:
```javascript
import Button from 'react-bootstrap/Button';
// or
import { Button } from 'react-bootstrap';
```
## **as** Prop API
If we want to keep styling of the certain React-Bootstrap component but change the final rendered component (different HTML tag, different custom component) we can use `as` prop:
```javascript
import { Button, Badge } from 'react-bootstrap';
const Component = () => {
return (
<>
<Button as="a">Link</Button>
<Badge as={Button}>Button</Badge>
</>
)
}
```
## Theming
We can set bootstrap theme using `data-bs-theme` attribute. Globally we should add it to `<html>` element. For example, if we want 'dark' color mode we add `data-bs-theme="dark"`.
## Components
### Accordion
Vertically collapsing element:
```html
<Accordion defaultActiveKey="0">
<Accordion.Item eventKey="0">
<Accordion.Header>Accordion Item #1</Accordion.Header>
<Accordion.Body>
Lorem ipsum
</Accordion.Body>
</Accordion.Item>
<Accordion.Item eventKey="1">
<Accordion.Header>Accordion Item #2</Accordion.Header>
<Accordion.Body>
Lorem ipsum
</Accordion.Body>
</Accordion.Item>
</Accordion>
```
#### Accordion props
- **defaultActiveKey={value}** - which `Accordion.Item` is open by default. The value corresponds to `eventKey`. If there is no `defaultActiveKey` no item is open by default;
- **flush** - removes the dafault background-color, borders.
- **alwaysOpen** - not close the item when another item is opened. If we want multiple items to be open by default:
```html
<Accordion
defaultActiveKey={["0","1"]}
alwaysOpen
>
```
- **onSelect={(selectedEventKey, event) => {}}** - fires when the active item changes.
### Alerts
Styled feedback message:
```html
<Alert variant='warning'>
<Alert.Heading>
Hey, just a warning
</Alert.Heading>
This is a 'warning' alert with <Alert.Link href="#">
an example link
</Alert.Link>.
</Alert>
```
#### Alert props
- **variant={value}** - style, where value may equal:
- 'primary',
- 'secondary',
- 'success',
- 'danger',
- 'warning',
- 'info',
- 'light',
- 'dark';
- **dismissible** - adds button that dismisses the alert;
- **show={Boolean}** - visual state of the Alert;
- **onClose={func}** - callback invoked when alert is closed
### Badges
Count and labeling component, that matches the size of the immediate parent:
```html
<Button variant="primary">
Profile <Badge bg="secondary">9</Badge>
<span className="visually-hidden">unread messages</span>
</Button>
```
#### Badge props
- **bg-{keyword}** - similar to apply bootstrap `.text-bg-{keyword}` class, where keyword is the same as variant in Alert component;
- **pill** - borders are more rounded.
### Breadcrumbs
Current page's location within a navigational hierarchy:
```html
<Breadcrumb>
<Breadcrumb.Item href="#">Home</Breadcrumb.Item>
<Breadcrumb.Item href="https://getbootstrap.com/docs/4.0/components/breadcrumb/">
Library
</Breadcrumb.Item>
<Breadcrumb.Item active>Data</Breadcrumb.Item>
</Breadcrumb>
```
#### Breadcrumb.Item props
- **href={value}**;
- **active** - it overrides 'href'; `span` element renders instead of `a` element .
### Buttons
#### Button props
- **variant={value}** - style, where value may equal:
- 'primary',
- 'secondary',
- 'success',
- 'danger',
- 'warning',
- 'info',
- 'light',
- 'dark',
- 'link',
- 'outline-primary' - no background color,
- 'outline-secondary',
- 'outline-success',
- 'outline-danger',
- 'outline-warning',
- 'outline-info',
- 'outline-light',
- 'outline-dark';
- **size={value}** - scale, where value may equal:
- 'lg',
- 'sm';
- **disabled**;
- **href={value}** - renders <a> element styled as button;
- **type={'button'/'reset'/'submit'/null}**
#### ToggleButton
It is used to style `checkbox`:
```html
<ToggleButton
id="toggle-check"
type="checkbox"
variant='outline-primary'
checked={checked}
value="1"
onChange={(e) => {
setChecked(e.currentTarget.checked);
}}
>
Controlled checked
</ToggleButton>
```
and `radio`:
```html
<ToggleButton
id="radio-1"
type="radio"
variant="outline-secondary"
name="radioOptions"
value="1"
checked={radioValue==='1'}
onChange={(e) => setRadioValue(e.currentTarget.value)}
>
radio option 1
</ToggleButton>
<ToggleButton
id="radio-2"
type="radio"
variant="outline-secondary"
name="radioOptions"
value="2"
checked={radioValue==='2'}
onChange={(e) => setRadioValue(e.currentTarget.value)}
>
radio option 2
</ToggleButton>
```
### Button group
- **`<ButtonGroup>`** - wrapper around group of `<Button>`, `<DropdownButton>` elements;
- **`<ButtonToolbar>`** - wrapper around sets of `<ButtonGroup>`, `<InputGroup>` elements.
#### ButtonGroup props
- **size={'sm'/'lg'}** - applying this size to all inner Buttons;
- **vertical** - making group of buttons vertically stacked ;
### Cards
Flexible and extensible container:
```html
<Card className="text-center">
<Card.Img variant="top" src="#" />
<Card.Header as="h3">Featured</Card.Header>
<Card.Body>
<Card.Title>Card Title</Card.Title>
<Card.Subtitle>Card Subtitle</Card.Subtitle>
<Card.Text>Card Text</Card.Text>
<Card.Link href="#">Card Link</Card.Link>
<Card.Link href="#">Another Link</Card.Link>
<Button variant="primary">Go somewhere</Button>
</Card.Body>
<Card.Footer>Footer</Card.Footer>
</Card>
```
`<Card.Body>` adds padding.
#### Card props
- **bg={'primary'/'secondary'/etc.}** - card background;
- **text={'muted'/'primary'/etc.}** - card text color;
- **border={'primary'/'secondary'/etc.}** - card border color.
#### Card.Img props
- **variant={top/bottom}** - styling image for top of the card or the bottom.
#### Image Overlays
Image is turned into a card background:
```html
<Card style={{ width: '18rem' }} className="text-center">
<Card.Img src="https://cdn.pixabay.com/photo/2024/05/05/05/55/goose-8740266_1280.jpg" />
<Card.ImgOverlay>
<Card.Header as="h3">Featured</Card.Header>
<Card.Body>
</Card.Body>
</Card.ImgOverlay>
</Card>
```
#### Navigation
```html
<Card.Header>
<Nav variant="tabs" defaultActiveKey="#first">
<Nav.Item>
<Nav.Link href="#first">Active</Nav.Link>
</Nav.Item>
<Nav.Item>
<Nav.Link href="#link">Link</Nav.Link>
</Nav.Item>
</Nav>
</Card.Header>
```
#### Card Groups
Row-directioned flexbox:
```html
<CardGroup>
<Card>
</Card>
<Card>
</Card>
</CardGroup>
```
### Carousels
Slideshow component for cycling through elements- images or slides of text:
```html
{/* uncontrolled */}
<Carousel style={{width: '17rem'}}>
<Carousel.Item>
<Card>
<Card.Img src="https://cdn.pixabay.com/photo/2024/04/25/06/50/banana-8719086_960_720.jpg" />
</Card>
<Carousel.Caption>
<h3>First slide label</h3>
<p>Nulla vitae elit libero, a pharetra augue mollis interdum.</p>
</Carousel.Caption>
</Carousel.Item>
<Carousel.Item>
<Card>
<Card.Img src="https://cdn.pixabay.com/photo/2024/04/25/06/50/banana-8719086_960_720.jpg" />
</Card>
<Carousel.Caption>
<h3>Second slide label</h3>
<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</p>
</Carousel.Caption>
</Carousel.Item>
</Carousel>
```
#### Carousel props
- **fade** - fade transition instead of a slide;
- **slide={false}** - remove slide animation;
- **controls={false}** - remove previous and next arrows;
- **indicators={false}** - remove slide position indicators;
- **activeIndex={number}** - current visible slide;
- **onSelect={(newIndex, event) => {}}** - fires when the active item changes;
- **interval={number/null}** - delay between automatically cycling an item.
#### Carousel.Item props
- **interval={value}** - how many milliseconds we stay on this slide;
### Dropdowns
Toggler for displaying lists of links:
```html
<Dropdown>
<Dropdown.Toggle id="dropdown-basic">
Dropdown Button
</Dropdown.Toggle>
<Dropdown.Menu>
<Dropdown.Header>Dropdown header</Dropdown.Header>
<Dropdown.Item href="#/action-1">Action</Dropdown.Item>
<Dropdown.Item href="#/action-2">Another action</Dropdown.Item>
<Dropdown.Divider />
<Dropdown.Item href="#/action-3">Something else</Dropdown.Item>
</Dropdown.Menu>
</Dropdown>
```
**DropdownButton** can replace some elements:
```html
<DropdownButton id="dropdown-basic-button" title="Dropdown button">
<Dropdown.Item href="#/action-1">Action</Dropdown.Item>
<Dropdown.Item href="#/action-2">Another action</Dropdown.Item>
<Dropdown.Item href="#/action-3">Something else</Dropdown.Item>
</DropdownButton>
```
#### Dropdown.Item
By default this element renders into links. However, we can use `as="button"` to change it.
We can also create non-iteractive items with `<Dropdown.ItemText>`.
#### Dropdown props
- **drop={value}** - direction and location of the Menu relative to Toggle, where value may equal to:
- 'up'
- 'up-centered'
- 'start'
- 'end'
- 'down'
- 'down-centered';
- **show** - make menu visible;
- **onToggle={func}** - controls show;
- **autoClose={value}** - how to close he dropdown, where value may equal to:
- true
- 'outside'
- 'inside'
- false.
#### Dropdown.Toggle props
- **split** - make Toggle split on button and toggler:
```html
<Dropdown as={ButtonGroup}>
<Button variant="success">Split Button</Button>
<Dropdown.Toggle id="dropdown-basic" split />
</Dropdown>
```
#### Dropdown.Menu props
- **variant={value}**
### Images
Responsive images element:
```html
<Container className="w-25" >
<Image src="https://cdn.pixabay.com/photo/2024/03/30/04/56/tea-8664063_960_720.jpg" roundedCircle fluid />
</Container>
```
#### Image props
- **fluid** - it scales image to the parent element;
- shape of the image can be changed by:
- **rounded**;
- **roundedCircle**;
- **thumbnail**.
### List groups
Flexible component for displaying series of content:
```html
<ListGroup numbered >
<ListGroup.Item>Cras justo odio</ListGroup.Item>
<ListGroup.Item>Dapibus ac facilisis in</ListGroup.Item>
</ListGroup>
```
#### ListGroup props
- **variant="flush"** - removes outer borders and rounded corners;
- **horizontal={true/'sm'/'md'/'lg'/'xl'/'xxl'}** - makes list horizonal starting at the breakpoint. It can't be combined with 'flush';
- **numbered** - make list with numbers;
#### ListGroup.Item props
- **variant={'primary'/'secondary'/etc.}**;
- **action** - additional hover:
```html
<ListGroup.Item action href='#'>...
<ListGroup.Item action onClick={()=>{}}>...
```
- **active** - style for active item;
- **disabled** - if item with `action` state becomes disabled;
- **href="#"**;
- **onClick={()=>{}}**.
### Modals
- These elements are over everything else in the document;
- Only one modal window at a time;
```javascript
const [show, setShow] = useState(false);
const handleClose = () => setShow(false);
const handleShow = () => setShow(true);
return (
<>
<Button variant="primary" onClick={handleShow}>
Launch demo modal
</Button>
<Modal show={show} onHide={handleClose}>
<Modal.Header closeButton>
<Modal.Title>Modal heading</Modal.Title>
</Modal.Header>
<Modal.Body>Woohoo, you are reading this text in a modal!</Modal.Body>
<Modal.Footer>
<Button variant="secondary" onClick={handleClose}>
Close
</Button>
<Button variant="primary" onClick={handleClose}>
Save Changes
</Button>
</Modal.Footer>
</Modal>
</>
)
```
#### Modal props
- **size={'sm'/'lg'/'xl'}**;
- **fullscreen={true/'sm-down'/'md-down'/'xl-down'/'xxl-down'}** - fullscreen modal when screen width is below breakpoint;
- **centered** - vertically centered dialog;
- **backdrop='static'/true/false** - if `static` or `false` modal will not close when clicking outside. If `false` there is no outside background;
- **keyboard=false** - not close modal when escape key is pressed;
- **scrollable** - allows scrolling `<Modal.Body>` instead of the entire Modal when overflowing;
- **animation=false** - remove animation when open and close modal;
- **show** - show modal;
- **onShow={()=>{}}** - fires when modal is opening;
- **onHide={()=>{}}** - fires when modal is closing.
#### Modal.Header props
- **closeButton** - show close button.
### Navs
**Nav** - flexbox:
```html
<Nav>
<Nav.Item>
<Nav.Link href="/home">Active</Nav.Link>
</Nav.Item>
<Nav.Item>
<Nav.Link eventKey="link-1">Link</Nav.Link>
</Nav.Item>
<Nav.Item>
<Nav.Link eventKey="link-2">Link</Nav.Link>
</Nav.Item>
<Nav.Item>
<Nav.Link eventKey="disabled" disabled>
Disabled
</Nav.Link>
</Nav.Item>
</Nav>
```
#### Nav props
- **variant={'tabs'/'pills'/'underline'}** - style items;
- **activeKey={eventKey/href}** - which item is active;
- **defaultActiveKey={eventKey/href}**;
- **fill** - items proportionately fill width;
- **justify** - items evenly fill width;
#### Nav.Link props
- **active**;
- **disabled**;
- **href={#}**;
- **eventKey={string/number}**;
#### NavDropdown
```html
<Nav>
<NavDropdown title="Dropdown" id="nav-dropdown">
<NavDropdown.Item eventKey="4.1">Action</NavDropdown.Item>
<NavDropdown.Item eventKey="4.2">Another action</NavDropdown.Item>
<NavDropdown.Item eventKey="4.3">Something else here</NavDropdown.Item>
<NavDropdown.Divider />
<NavDropdown.Item eventKey="4.4">Separated link</NavDropdown.Item>
</NavDropdown>
</Nav>
```
##### Props
- **title={string}** - text content of the button;
- **disabled**;
- **active**.
### Navbars
- `expand` prop collapses navbar at lower breakpoint;
- navbar is fluid by default;
```html
<Navbar expand="lg">
<Container>
<Navbar.Brand href="#home">React-Bootstrap</Navbar.Brand>
<Navbar.Toggle aria-controls="basic-navbar-nav" />
<Navbar.Collapse id="basic-navbar-nav">
<Navbar.Text href="#link">Not Link</Navbar.Text>
<Nav className="me-auto">
<Nav.Link href="#home">Home</Nav.Link>
<NavDropdown title="Dropdown" id="basic-nav-dropdown">
<NavDropdown.Item href="#action/3.1">Action</NavDropdown.Item>
<NavDropdown.Item href="#action/3.2">
Another action
</NavDropdown.Item>
<NavDropdown.Item href="#action/3.3">Something</NavDropdown.Item>
<NavDropdown.Divider />
<NavDropdown.Item href="#action/3.4">
Separated link
</NavDropdown.Item>
</NavDropdown>
</Nav>
</Navbar.Collapse>
</Container>
</Navbar>
```
> Toggler will appear only at `lg` breakpoint
#### Navbar props
- **expand={breakpoint}** - below breakpoint Navbar will collapse;
- **bg={'primary'/'secondary'}** - Bootstrap's `.bg-*` class;
- **fixed={'top'/'bottom'}**;
- **sticky={'top'/'bottom'}**;
- **collapseOnSelect**.
### Offcanvas
Hidden sidebars:
```html
<Button variant="primary" onClick={handleShow}>
Launch
</Button>
<Offcanvas show={show} onHide={handleClose}>
<Offcanvas.Header closeButton>
<Offcanvas.Title>Offcanvas</Offcanvas.Title>
</Offcanvas.Header>
<Offcanvas.Body>
Some text as placeholder. In real life you can have the elements you
have chosen. Like, text, images, lists, etc.
</Offcanvas.Body>
</Offcanvas>
```
#### Offcanvas props
- **backdrop='static'/true/false** - if `static` or `false` modal will not close when clicking outside. If `false` there is no outside background;
- **keyboard=false** - not close modal when escape key is pressed;
- **scroll** - allow body scrolling while offcanvas is open;
- **placement={'start'/'end'/'top'/'bottom'}** - from which side of the viewport offcanvas appears;
- **responsive={'sm'/'md'/'lg'/'xl'/'xxl'}** - from the breakpoint show content of the offcanvas.
### Progress bars
```html
<ProgressBar
now={current}
label={`${current}%`}
variant='info'
striped
animated
/>
```
#### ProgressBar props
- **min={number}**;
- **now={number}**;
- **max={number}**;
- **label={string}**;
- **visuallyHidden** - hides label visually;
- **striped** - striped effect;
- **animated** - if `striped` stripes are animated;
- **variant={'success'/'danger'/'warning'/'info'}** - background class;
### Spinners
Usually it's used to show the loading state:
```html
<Spinner animation="border" role="status">
<span className="visually-hidden">Loading...</span>
</Spinner>
```
#### Spinner props
- **variant={'primary'/'secondary'/etc.}**;
- **animation={'border'/'grow'}**;
- **size='sm'** - small spinner;
### Tables
#### Table props
- **striped/striped="columns"** - zebra-striping to rows or columns;
- **bordered** - adds borders to all sides of the table;
- **hover** - hover state on table rows;
- **variant={'primary'/'secondary'/etc.}**;
- **responsive={true/breakpoint}** - adds horizotal scroll.
### Tabs
```html
<Tabs
defaultActiveKey="profile"
id="uncontrolled-tab-example"
className="mb-3"
>
<Tab eventKey="home" title="Home">
Tab content for Home
</Tab>
<Tab eventKey="profile" title="Profile">
Tab content for Profile
</Tab>
<Tab eventKey="contact" title="Contact">
Tab content for Contact
</Tab>
</Tabs>
```
#### Tabs props
- **variant={'tabs'/'pills'/'underline'}**;
- **fill**;
- **justify**;
- **activeKey={string}**;
- **defaultActiveKey={string}**;
- **onSelect={(eventKey, event)=>{}}**.
#### Tab.Container
It's used for more complex layouts.
```html
<Tab.Container id="left-tabs-example" defaultActiveKey="first">
<Row>
<Col sm={3}>
<Nav variant="pills" className="flex-column">
<Nav.Item>
<Nav.Link eventKey="first">Tab 1</Nav.Link>
</Nav.Item>
<Nav.Item>
<Nav.Link eventKey="second">Tab 2</Nav.Link>
</Nav.Item>
</Nav>
</Col>
<Col sm={9}>
<Tab.Content>
<Tab.Pane eventKey="first">First tab content</Tab.Pane>
<Tab.Pane eventKey="second">Second tab content</Tab.Pane>
</Tab.Content>
</Col>
</Row>
</Tab.Container>
```
### Toasts
Push notifications:
```html
<Button onClick={handleShow}>Show Toast</Button>
<Toast show={show} onClose={handleClose}>
<Toast.Header>
<strong className="me-auto">Bootstrap</strong>
<small>11 mins ago</small>
</Toast.Header>
<Toast.Body>Hello, world! This is a toast message.</Toast.Body>
</Toast>
```
If there are multiple toasts:
```html
<ToastContainer position="bottom-end" className="p-3" style={{ zIndex: 1 }}>
<Toast>
<Toast.Header>
<strong className="me-auto">Bootstrap</strong>
<small className="text-muted">just now</small>
</Toast.Header>
<Toast.Body>See? Just like this.</Toast.Body>
</Toast>
<Toast>
<Toast.Header>
<strong className="me-auto">Bootstrap</strong>
<small className="text-muted">2 seconds ago</small>
</Toast.Header>
<Toast.Body>Heads up, toasts will stack automatically</Toast.Body>
</Toast>
</ToastContainer>
```
#### Toast props
- **autohide**;
- **delay={number}** - delay hiding for `number` milliseconds;
- **bg={'primary'/'secondary'/etc.}**;
#### ToastContainer props
- **position={value}** - where the toasts will be placed within container, where value may equal to:
- 'top-start'
- 'top-center'
- 'top-end'
- 'middle-start'
- 'middle-center'
- 'middle-end'
- 'bottom-start'
- 'bottom-center'
- 'bottom-end'
| jsha |
1,910,082 | BitPower Smart Contract: | BitPower is a decentralized energy trading platform based on blockchain technology, aiming to improve... | 0 | 2024-07-03T11:49:46 | https://dev.to/xin_lin_fc39c6250ef2ab451/bitpower-smart-contract-h91 | BitPower is a decentralized energy trading platform based on blockchain technology, aiming to improve the transparency and efficiency of the energy market. At its core are smart contracts that automate energy transactions through pre-written code. These smart contracts can not only automate the transaction process and reduce middlemen, but also ensure the fairness and security of transactions. BitPower’s smart contracts have the following features:
Automated transactions: Smart contracts can automatically match the needs of buyers and sellers, complete the entire process of energy transactions, and reduce human intervention and errors.
Efficient and transparent: All transactions are recorded on the blockchain, which is open, transparent and cannot be tampered with, increasing the credibility and security of transactions.
Reduced costs: By eliminating intermediaries, smart contracts significantly reduce transaction costs and improve market efficiency.
Programmability: Users can customize smart contracts according to their own needs to achieve diversified transaction models and complex business logic.
The application of BitPower smart contracts is expected to reshape the traditional energy market and promote the development of energy transactions in a more intelligent and sustainable direction. | xin_lin_fc39c6250ef2ab451 | |
1,910,091 | Technical Flame Retardant Fabrics: Ensuring Safety in Hazardous Environments | Why Are Technical Flame Retardant Fabrics So Important Nowadays, in the rapidly growing industries... | 0 | 2024-07-03T11:53:35 | https://dev.to/kamila_bullockz_a15641e8e/technical-flame-retardant-fabrics-ensuring-safety-in-hazardous-environments-2emn | design | Why Are Technical Flame Retardant Fabrics So Important
Nowadays, in the rapidly growing industries workplace safety is essential. In high-risk work environments, technical flame retardant fabrics are key to ensure the safety of workers. Developed to resist high temperatures and flames, these unique fabrics are used for industrial applications where employees come in contact with flammable parts and must be protected from getting on fire leading to catastrophic workplace accidents.
The Science Behind Flame Retardant Materials
The science of flame retardant fabrics To fully understand the significance behind using flame-retardants, it is essential to get down to brass tacks on what these substances are. Flame retardant treated fabrics typically experience a process of chemical treatment to help avoid flames ignite or propagate. This flame-out occurs in mere seconds, as the lining starves the fire from oxygen. Flame retardant 100% Cotton Fabric must adhere to the most stringent safety standards, and they are tested under strict testing conditions with the potential of tolerating high temperatures as well flames.
Flame Retardant Textiles Dependent Industries
The flame retardant textile market is utilized in several industries for worker safety. There is quite one example, the oil and gas field that involves literally flammable 100% Polyester Fabric materials and an atmosphere with very high temperatures on a daily basis. For facial protection goggles, use of a nominal safety helmets and flame retardant coveralls that are specialized would be necessary to ensure enough precautionary measures against hazards. In addition, fire retardant fabrics are also used in areas such as chemical work clothing, electrical operation apparel firefighting garb at military operations etc which enhance safety.
Factors When Choosing Flame-Retardant Fabrics
There are some key factors to consider when selecting the appropriate flame retardant fabric. The fabric you end up selecting should, first of all - meet your industry's safety standards. Besides, the fabric has to be comfortable and flexible enough for workers who are more likely going to wear functional 100% Nylon Fabric clothing if they feel comfort between their daily activities. It is equally significant to maintain flame retardant fabrics for their lasting properties.
Flame Resistant FR Clothing in Preventing Workplace Mishaps
Flame retardant fabrics help to significantly reduce workplace accidents by acting as a safeguard against high temperature and flames. These protections dramatically reduce the potential for harm in precarious fields. Furthermore, in addition to protecting workers, the use of flame retardant fabrics also helps prevent damage to equipment and facilities saving money on accident costs. | kamila_bullockz_a15641e8e |
1,839,837 | Cheat Sheet for Bootstrap. Utilities and helpers | Table of contents Sizing Spacing Text Background Borders Text... | 27,069 | 2024-07-03T11:53:30 | https://dev.to/jsha/cheat-sheet-for-bootstrap-utilities-and-helpers-20g2 | bootstrap | ## Table of contents
1. [Sizing](#sizing)
2. [Spacing](#spacing)
3. [Text](#text)
4. [Background](#background)
5. [Borders](#borders)
6. [Text color](#text-color)
7. [Display](#display)
8. [Position](#position)
9. [Color & background](#color-amp-background)
10. [Colored links](#colored-links)
11. [Stacks](#stacks)
12. [Stretched link](#stretched-link)
13. [Text truncation](#text-truncation)
14. [Visually hidden](#visually-hidden)
## Sizing
### Relative to the parent
We can set the following classes for child element to control its' width:
- `.w-25` - means 25% of the parent's width;
- `.w-50`;
- `.w-75`;
- `.w-100`;
- `.w-auto`
The same values go for `.h-*` class.
We can also set `max-widht: 100%` with `.mw-100` and `max-height: 100%` with `.mh-100`.
### Relative to viewport
- `.vw-100` - width is 100vw;
- `.vh-100` - height is 100vh;
- `.min-vw-100` - min-width is 100vw;
- `.min-vh-100` - min-height is 100vw;
## Spacing
### Margin and padding
Classes names are constructed using `{property}{sides}-{size}`, where
**property**:
- `m` - for margin;
- `p` - for padding.
**sides**:
- `t` - top;
- `b` - bottom;
- `s` - start(left);
- `e` - end(right);
- `x` - left and right;
- `y` - top and bottom.
**size**:
> `$spacer` variable is defined in `scss/_variables.scss` and equals to `1rem`
- `1` = `$spacer` * .25;
- `2` = `$spacer` * .5;
- `3` = `$spacer`;
- `4` = `$spacer` * 1.5;
- `5` = `$spacer` * 3;
- `auto`
We can also define margin and padding for breakpoints: `{property}{sides}-{breakpoint}-{size}`.
### Horizontal centering
If an element is displayed as `block`, we can center horizontally by applying `.mx-auto` class.
### Gap
For `grid` and `flex` we can apply `.gap-*`, `.row-gap-*` and `.column-gap-*` classes.
## Text
### Text alignment
- `.text-{breakpoint}-start`
- `.text-{breakpoint}-center`
- `.text-{breakpoint}-end`
### Word break
`.text-break` class sets `word-wrap: break-word`.
### Text transform
- `.text-lowercase`
- `.text-uppercase`
- `.text-capitalize`
## Background
To see how each color looks and the meaning stands for the name [visit](https://getbootstrap.com/docs/5.3/customize/color).
We can set predefined background colors applying `.bg-*` classes:
- `.bg-primary`;
- `.bg-secondary`;
- `.bg-success`;
- `.bg-danger`;
- `.bg-warning`;
- `.bg-info`;
- `.bg-light`;
- `.bg-dark`;
> For each of upper classes we can add `*-subtle` to make a class with more subtle background color like `.bg-primary-subtle`
- `.bg-body-secondary`;
- `.bg-body-tertiary`;
- `.bg-body`;
- `.bg-black`;
- `.bg-white`;
- `.bg-transparent`;
We can add `.bg-gradient` class to background color class - it results into semi-transparent top and fully colored bottom.
To add opacity to predefined background color, we should override `--bs-bg-opacity` variable in inline style:
```html
<div class="bg-primary" style="--bs-bg-opacity: .5;">
This is 50% opacity success background
</div>
```
## Borders
- `.border` - all four edges;
- `.border-*` - only specific edge (top, bottom, etc.);
- `.border-0` - remove all borders;
- `.border-*-0` - remove specific edge;
### Color
We can use the same keywords as in background colors (primary, danger, warning) for border color, using `.border-*` class.
### Width
To set width of border we need `.border-{number-of-pixels}` class. There are only 1-5 values available.
{% codepen https://codepen.io/juliashlykova/pen/bGJyXPw %}
### Radius
- `.rounded-{scale}` - scale is in range from 1 to 5;
- `.rounded` - a little rounded border;
- `.rounded-top` - top angles are rounded;
- `.rounded-bottom`;
- `.rounded-start`;
- `.rounded-end`;
- `.rounded-circle`;
- `.rounded-pill`.
We can combine these classes:
- `.rounded-5.rounded-top-0` - top angles are not rounded;
- `.rounded-end-circle` - only right angles are rounded with 50% value.
## Text color
Class `.text-*` has the same keywords as `.bg-*` class. However, instead of `-subtle` postfix there is `-emphasis` that means darker color:
{% codepen https://codepen.io/juliashlykova/pen/ExJBYvM %}
## Display
`.d-*` allows almost all CSS display rules:
- `.d-none`
- `.d-inline`
- `.d-inline-block`
- `.d-block`
- `.d-grid`
- `.d-inline-grid`
- `.d-table`
- `.d-table-cell`
- `.d-table-row`
- `.d-flex`
- `.d-inline-flex`
To set different display after certain breakpoint we can use `.d-{breakpoint}-*` class.
### Flex
For flexbox we can set direction:
```html
<div class="d-flex flex-row"></div>
<div class="d-flex flex-sm-row"></div>
<div class="d-flex flex-column-reverse"></div>
```
For wrapping we apply `.flex-wrap`.
We can also apply align items inside flex using `.justify-content-{breakpoint}-*` and `.align-items-{breakpoint}-*` where `*` is value in CSS corresponding rules.
For individual alignment we should use `.align-self-{breakpoint}-*`.
## Position
To set position we use `.position-*` class, where `*` can be `relative`, `absolute` etc.
To arrange elements we use:
- `.top-{0/50/100}`, where `50` means 50% edge position;
- `.start-{0/50/100}`;
- `.bottom-{0/50/100}`;
- `.end-{0/50/100}`.
We can center elements applying combination of upper classes and `.translate-middle` which applies `translateX(-50%)` and `translateY(-50%)`.
### Fast positioning
We can quickly configure the position of an element:
- `.fixed-top`
- `.fixed-bottom`
- `.sticky-{breakpoint}-top`
- `.sticky-{breakpoint}-bottom`
## Color & background
For the predefined background color we can use `.text-bg-{primary/secondary/success/etc}` class to get contrast text color (either black or white) to background. This class replaces both `.text-{color}` and `.bg-{color}`.
Boostrap uses its' own `color-contrast` function, which we can find in [https://github.com/twbs/bootstrap/blob/main/scss/_functions.scss](https://github.com/twbs/bootstrap/blob/main/scss/_functions.scss). It uses [relative luminance](https://en.wikipedia.org/wiki/Relative_luminance) to determine contrast.
## Colored links
We can color links and its' underline with `.link-{primary/secondary/success/etc}` class.
## Stacks
- `.vstack` - flexbox with column direction;
- `.hstack` - flexbox with row direction;
## Stretched link
`.stretched-link` - class for link which makes containing block clickable.
```html
<div>
<span>hey</span>
<a class="stretched-link" href="#">
link
</a>
</div>
```
Here, div element becomes clickable.
## Text truncation
For long content sometimes we need to cut it. In CSS we use `text-overflow: ellipsis; overflow: hidden; white-space: nowrap;` rules which results in **`.text-truncate`** bootstrap class:
```html
<span class='text-truncate' style='width:100px;'>
Contrasting text color to background colory
</span>
//results to 'Contrast...'
```
## Visually hidden
- `.visually-hidden` - hide an element visually while allowing it to stay exposed to assistive technologies.
- `.visually-hidden-focusable` - visually hide and element while display when focused (by keyboard-only user).
| jsha |
1,910,090 | BitPower: Unlocking the Potential of Cryptocurrency | In the world of cryptocurrency and blockchain, BitPower is like a shining star. It is not only an... | 0 | 2024-07-03T11:53:21 | https://dev.to/ping_iman_72b37390ccd083e/bitpower-unlocking-the-potential-of-cryptocurrency-4p2l |
In the world of cryptocurrency and blockchain, BitPower is like a shining star. It is not only an investment tool, but also a revolutionary financial platform. Blockchain technology provides a solid foundation for it, while smart contracts give it unparalleled transparency and security.
The core of BitPower lies in its unique income mechanism. It records all transactions on the blockchain through smart contracts, ensuring that every transaction is open, transparent and tamper-proof. This transparency allows users to invest with confidence without worrying about any human intervention or fraud.
For investors, BitPower provides a variety of income methods. The first is recurring income. Users can get daily, weekly or monthly returns by providing liquidity. Specifically, providing 10,000 USDT of liquidity will receive 10,040 USDT after one day, 10,400 USDT after seven days, 10,950 USDT after fourteen days, and 12,400 USDT after twenty-eight days. This high rate of return makes BitPower an attractive investment option.
In addition, BitPower also has a sharing reward mechanism. Users can earn extra income by inviting new users to join the platform. Depending on the amount of circulation, users can receive up to 17 levels of sharing rewards. This reward mechanism not only motivates users to actively promote the platform, but also greatly increases users' profit potential.
BitPower's smart contract technology is the key to its success. Through smart contracts, all transactions are automatically executed without any intermediary or third-party intervention. This not only improves the efficiency of transactions, but also reduces transaction costs. More importantly, smart contracts ensure that all transactions are tamper-proof and the security of users' assets is guaranteed to the greatest extent.
BitPower's success is inseparable from its decentralized characteristics. All transactions on the platform are peer-to-peer, and funds flow directly between users' personal wallets. The platform itself cannot access users' funds, which ensures that users' assets are always under their control.
Through blockchain technology, BitPower not only provides high-yield investment opportunities, but also provides a secure, transparent and efficient financial platform for users around the world. It is reshaping the financial industry and unlocking the huge potential of cryptocurrency for users. Whether it is individual investors or enterprises, BitPower provides them with a trustworthy investment option.
In short, BitPower is leading a new trend in cryptocurrency investment through its innovative revenue mechanism, transparent smart contract technology, and decentralized trading model. It not only brings considerable returns to users, but also provides them with unprecedented financial freedom and security. In the future, with the continuous development of blockchain technology, BitPower will continue to shine in the world of cryptocurrency. | ping_iman_72b37390ccd083e | |
1,825,658 | Cheat Sheet for Bootstrap. Layout | Bootstrap allows to use mobile-first flexbox grid to build layouts of all shapes and sizes. ... | 27,069 | 2024-07-03T11:53:09 | https://dev.to/jsha/cheat-sheet-for-bootstrap-layout-11bk | bootstrap | Bootstrap allows to use **mobile-first** flexbox grid to build layouts of all shapes and sizes.
## Table of contents
1. [Breakpoints](#breakpoints)
2. [Containers](#containers)
3. [Grid](#grid)
4. [Row](#row)
5. [Column](#column)
## Breakpoints
**Breakpoints** - customizable widths that makes the layout responsive.
Default breakpoints can be found in `scss/_variables.css`:
```scss
$grid-breakpoints: (
xs: 0,
sm: 576px,
md: 768px,
lg: 992px,
xl: 1200px,
xxl: 1400px
);
```
Usually, to simply divide mobile and desktop screens **md** breakpoint is used.
## Containers
**Containers** are the basic elements in Bootstrap grid.
The basic CSS representation of container's classes:
```css
width: 100%;
padding-right: 0.75rem;
padding-left: 0.75rem;
margin-right: auto;
margin-left: auto;
```
> You can find all CSS rules for bootstrap [here](https://github.com/twbs/bootstrap/blob/main/dist/css).
Types of containers:
- `.container`, where `max-width` is set at each responsive breakpoints.
- `.container-{breakpoint}` - responsive container, where `width` is equal to `100%` until the specified breakpoint, after that `width` equals to corresponding width values at higher breakpoints.
- `.container-fluid`, where `width: 100%` at all breakpoints.
Bootstrap's values for containers' `width` and `max-width` can be found in `scss/_variables.css` also:
```scss
$container-max-widths: (
sm: 540px,
md: 720px,
lg: 960px,
xl: 1140px,
xxl: 1320px
);
```
## Grid
Bootstrap's grid consists of bootstrap's classes like `.container`, `.row`, `.col`:
```html
<div class="container">
<div class="row">
<div class="col">1</div>
<div class="col">2</div>
<div class="col">3</div>
</div>
</div>
```
Here, we built a grid with one row and 3 columns, where:
- container is flexible;
- its' `max-width` is set to the corresponding value at each breakpoint;
- columns have equal width.
Features of bootstrap's grid:
- rows are wrapped around columns;
- there are 12 template columns available per row
## Row
Class `.row` include these CSS rules:
```css
display: flex;
flex-wrap: wrap;
```
We can indicate number of columns per row with `.row-cols-{number-of-columns}` instead of applying `col-{number}` on individual columns. The following code makes the same result:
```html
<div class="row">
<div class="col-6">item 1</div>
<div class="col-6">item 2</div>
<div class="col-6">item 3</div>
<div class="col-6">item 4</div>
</div>
<div class="row row-cols-2">
<div class="col">item1</div>
<div class="col">item2</div>
<div class="col">item3</div>
<div class="col">item4</div>
</div>
```
## Column
Thus, to equally distribute width of the container we just use `.col` class. What should be used if we need column with different width?
- `.col-auto` - width of column is based on the width of the content.
- `.col-{number}` - how many template columns can be occupied by the element. If sum of column numbers exceeds 12, then extra columns will wrap onto a new line.
- `.col-breakpoint` - this class for a columns allows arrangement of columns to start out vertical and become horizontal, when viewport's width is bigger than the breakpoint. We can use `-auto` and `-{number}` with this class also.
Thus, for grids that are the same for any devices we can just use `.col` and `.col-*`. If we want "stacked to horizontal" behaviour `.col-breakpoint-*` comes to light.
We can use a combination of classes for each column:
```html
<div class="col-3 col-md-6">
Column
</div>
```
This element will occupy 3 template columns until the viewport's width increases to md(768px), then it will occupy 6 template columns.
```html
<div class="col-sm-6 col-md-5 col-lg-6">
Column 1
</div>
<div class="col-sm-6 col-md-5 col-lg-6">
Column 2
</div>
```
This elements will be positioned in stack until the viewport width becomes larger than sm(576px), then each column will occupy 6 template columns until the viewport width reaches md(768px) then - 5 template columns and once viewport width reaches lg(992px) - again 6 template columns
### Columns alignment inside row
Since `.row` is a flexbox we can align elements inside it easily.
#### Vertically
We can set these classes on `.row` element to align columns:
- `align-items-start`
- `align-items-center`
- `align-items-end`
To align a `.column` element individually we set these classes:
- `align-self-start`
- `align-self-center`
- `align-self-end`
#### Horizontally
Apply these classes on `.row` element:
- `justify-content-start`
- `justify-content-center`
- `justify-content-end`
- `justify-content-between` - the first and the last column are placed at edges. The left space is evenly distributed.
- `justify-content-evenly` - the space is distributed evenly.
- `justify-content-around` - the space before the first and last column equals half of space between each pair of adjacent columns.
### Offseting columns
- `.offset-{number}` - how many template columns we need to omit before starting column;
- `.offset-{breakpoint}-{number}` - how many template columns we need to omit before starting column after reaching breakpoint.
| jsha |
1,910,089 | Introduction to BitPower Smart Contracts | Introduction BitPower is a decentralized lending platform that provides secure and efficient lending... | 0 | 2024-07-03T11:53:02 | https://dev.to/aimm/introduction-to-bitpower-smart-contracts-5fcb | Introduction
BitPower is a decentralized lending platform that provides secure and efficient lending services through smart contract technology. This article briefly introduces the features of BitPower smart contracts.
Core features of smart contracts
Automatic execution
All transactions are automatically executed by smart contracts, which is fast and does not require human intervention.
Open and transparent
The smart contract code is open source and can be viewed and audited by anyone, increasing credibility.
No need for third-party trust
Smart contracts eliminate the reliance on intermediaries, and users interact directly with the platform to reduce risks.
High security
Once deployed, smart contracts cannot be tampered with, ensuring stable rules and protecting user assets.
Automatic liquidation
When the borrower fails to meet the collateral requirements, the smart contract will automatically liquidate to protect the interests of both parties.
Conclusion
BitPower has achieved efficient and secure decentralized lending through smart contract technology. Join BitPower and experience the financial innovation brought by smart contracts! | aimm | |
1,819,897 | Introduction to Bootsrap | What is Bootstrap? If you haven't heard about CSS frameworks, then imagine that you don't have to... | 27,069 | 2024-07-03T11:52:40 | https://dev.to/jsha/introduction-to-bootsrap-17kk | bootstrap, webdev, frontend | What is Bootstrap? If you haven't heard about CSS frameworks, then imagine that you don't have to create styles with CSS, you just use already existing classes and there is no need to puzzle over responsive design. It will certainly facilitate and accelerate development of the webpage. Alongside with **Bootstrap** there are various other CSS frameworks like **Tailwind, Bulma, Foundation**, but Bootstrap is a leader of them according to [statistics](https://w3techs.com/technologies/overview/css_framework).
This series is dedicated to Bootstrap v5.3.
## Table of contents
1. [Installation](#installation)
2. [Global style](#global-style)
3. [Bootstrap variables](#bootstrap-variables)
## Installation
There are three ways to start building projects with Bootstrap:
- Install via package manager: `npm install bootstrap`
and then set link for needed CSS Bootstrap file in html:
```html
<head>
<link rel="stylesheet" type="text/css" href="./node_modules/bootstrap/dist/css/bootstrap.min.css">
</head>
```
The difference between `bootstrap.min.css` and `bootstrap.css` is that original version is more readable while minified one's size is less since all whitespace and other extra characters are removed.
If you want to use Boostrap Javascript, you should include it in script file:
```javascript
const bootstrap = require('bootstrap');
```
However, we should remember that Bootstrap Javascript unlike CSS is [not fully compatible with JavaScript frameworks](https://getbootstrap.com/docs/5.3/getting-started/javascript/#usage-with-javascript-frameworks).
- Include cdn Bootstrap link in html file:
```html
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Bootstrap demo</title>
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-QWTKZyjpPEjISv5WaRU9OFeRpok6YctnYmDr5pNlyT2bRjXh0JMhjY6hW+ALEwIH" crossorigin="anonymous">
</head>
<body>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js" integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM" crossorigin="anonymous"></script>
</body>
```
- Download the source code from [https://getbootstrap.com/](https://getbootstrap.com/)
### Installation in React project with a module bundler
According to [Usage with JavaScript frameworks](https://getbootstrap.com/docs/5.3/getting-started/javascript/#usage-with-javascript-frameworks) Bootstrap JavaScript is not fully compatible with React: "Both Bootstrap and the framework may attempt to mutate the same DOM element, resulting in bugs like dropdowns that are stuck in the “open” position". Thus, it's better to use a framework-specific package instead of the Bootstrap JavaScript.
```bash
npm i react-bootstrap bootstrap
```
Also, we need library Sass to bundle Bootstrap's CSS:
```bash
npm i -D sass
```
Then, we should import Bootstrap CSS library in root module. For example, if the project built with Vite, it's `src/main.jsx`:
```javascript
// Bootstrap CSS
import "bootstrap/dist/css/bootstrap.min.css";
```
As for `react-bootstrap`, we should just import components like:
```javascript
import Button from 'react-bootstrap/Button';
// or less ideally
import { Button } from 'react-bootstrap';
```
## Global style
Bootstrap's global style has tendency towards normalization of cross browser styles. Some important style to mention:
- `box-sizing: border-box` - this allows to include padding and border size into element width;
- `font-family` is set to system font stack;
- all heading elements don't have `margin-top` and `margin-bottom: .5rem`;
- paragraph elements don't have `margin-top` either and `margin-bottom: 1rem`;
- links change color on `:hover`, but don't on `:visisted`;
- horizontal rules `<hr>` have `opacity: .25`;
- all lists don't have `margin-top`, 'padding-left' and have `margin-bottom: 1rem`;
- `<textarea>` is resizable only vertically;
- `<button>` has `cursor: pointer` if not disabled.
## Bootstrap variables
Bootstrap sets some CSS variables, which we can use. All Bootstrap variables are prefixed with **bs-** to avoid conflicts with other style. To see a list of root variables to use visit [https://getbootstrap.com/docs/5.3/customize/css-variables/#root-variables](https://getbootstrap.com/docs/5.3/customize/css-variables/#root-variables)
| jsha |
1,910,088 | What Are the Future Developments for BEP-20 Tokens? | *Introduction: * Cryptocurrency enthusiasts are no strangers to the term BEP-20 tokens, especially... | 0 | 2024-07-03T11:52:39 | https://dev.to/elena_marie_dad5c9d5d5706/what-are-the-future-developments-for-bep-20-tokens-13f8 | cryptotoken | **Introduction:
**
Cryptocurrency enthusiasts are no strangers to the term BEP-20 tokens, especially if they are familiar with the Binance Smart Chain (BSC). BEP-20 tokens have emerged as a significant player in the crypto space, offering a myriad of benefits and functionalities. A **[Token Development Company](https://www.clarisco.com/token-development-company)** is continuously working on enhancing these tokens to maximize their potential. But what does the future hold for these tokens? Let's dive into the potential developments and advancements on the horizon for BEP-20 tokens.
Understanding BEP-20 Tokens
BEP-20 tokens are a token standard on the Binance Smart Chain, similar to Ethereum's ERC-20 tokens. These tokens represent a technical standard used for creating and issuing smart contracts on the BSC. They facilitate a variety of functions such as token transfers, balances, and data access, making them essential in the creation of decentralized applications (dApps) and financial transactions.
Technological Advancements
One of the most exciting aspects of BEP-20 tokens is the ongoing technological advancements. Enhanced security features are continually being developed to protect users from potential threats. Improved scalability solutions are also in the works to handle the growing number of transactions on the BSC. Additionally, the integration of BEP-20 tokens with DeFi platforms is creating new opportunities for decentralized financial services.
Interoperability with Other Blockchains
Interoperability is a crucial aspect for the future of BEP-20 tokens. Cross-chain compatibility allows tokens to be used across different blockchain networks, enhancing their utility and accessibility. Projects like Binance Bridge are already working on solutions to facilitate this interoperability, promising a more connected and versatile crypto ecosystem.
Use Cases and Applications
Currently, BEP-20 tokens are used in a variety of applications, including decentralized exchanges (DEXs), gaming, and asset tokenization. Emerging applications are expanding their use even further, with new projects continually exploring innovative ways to leverage BEP-20 tokens. Case studies of successful projects highlight the versatility and potential of these tokens in various industries.
Community and Developer Engagement
The success of BEP-20 tokens is heavily dependent on the community and developer engagement. Initiatives to engage developers and foster a supportive community are essential for driving innovation and adoption. Future community-driven projects could bring about new and exciting developments for BEP-20 tokens.
Scalability Solutions
Scalability remains a significant challenge for many blockchain networks, including the Binance Smart Chain. Current solutions like Layer 2 protocols are being explored to enhance scalability and reduce congestion. Potential breakthroughs in this area could significantly improve the performance and usability of BEP-20 tokens.
Environmental Impact
The environmental impact of cryptocurrency is a major worry. BEP-20 tokens, like other digital assets, consume energy in their operations. However, initiatives are underway to reduce their carbon footprint and promote sustainable practices. Future developments could include more energy-efficient consensus mechanisms and other eco-friendly innovations.
**Conclusion
**
The future of **[BEP-20 token development](https://www.clarisco.com/bep20-token-development)** looks promising, with numerous advancements and innovations on the horizon. From technological improvements and regulatory changes to new use cases and investment opportunities, BEP-20 tokens are set to play a pivotal role in the evolving crypto landscape. By staying informed and engaged, stakeholders can navigate the challenges and harness the potential of these versatile tokens.
| elena_marie_dad5c9d5d5706 |
1,910,087 | Paper detailing BitPower Loop’s security | Security Research of BitPower Loop BitPower Loop is a decentralized lending platform based on... | 0 | 2024-07-03T11:52:21 | https://dev.to/kjask_jklshd_cecbd37d6d57/paper-detailing-bitpower-loops-security-11eg | Security Research of BitPower Loop
BitPower Loop is a decentralized lending platform based on blockchain technology, dedicated to providing users with safe, transparent and efficient financial services. Its core security comes from multi-level technical measures and mechanism design, which ensures the robust operation of the system and the security of user funds. This article will introduce the security of BitPower Loop in detail from five aspects: smart contract security, decentralized management, data and transaction security, fund security and risk control mechanism.
1. Smart Contract Security
Smart contracts are the core components of BitPower Loop, and their codes must undergo strict security audits before deployment. These audits are usually conducted by third-party independent security companies to ensure that there are no vulnerabilities or malicious code in the contract. In addition, the immutability of smart contracts means that once deployed, no one (including the development team) can modify its rules and logic, which fundamentally eliminates the possibility of malicious operations. All operations are automatically executed by smart contracts, avoiding the risk of human intervention and ensuring the fairness and consistency of system operation.
2. Decentralized Management
BitPower Loop eliminates the risks brought by single point failures and central control through decentralized management. The system has no central management agency or owner, and all transactions and operations are jointly verified and recorded by blockchain nodes distributed around the world. This decentralized structure not only improves the system's anti-attack capabilities, but also enhances transparency. Users can publicly view all transaction records, which increases trust in the system.
3. Data and transaction security
BitPower Loop uses advanced encryption technology to protect users' data and transaction information. All data is encrypted during transmission and storage to prevent unauthorized access and data leakage. The consensus mechanism of the blockchain ensures the validity and immutability of each transaction, eliminating the possibility of double payment and forged transactions. In addition, the automated execution of smart contracts also avoids delays and errors caused by human operations, ensuring the real-time and accuracy of transactions.
4. Fund security
The secure storage of user funds is an important feature of BitPower Loop. Funds are stored on the blockchain through smart contracts and maintained by nodes across the entire network. Distributed storage avoids the risk of fund theft caused by centralized storage. In addition, the user's investment returns and shared commissions are automatically allocated to the user's wallet address by the smart contract after the conditions are met, ensuring the timely and accurate arrival of funds.
5. Risk Control Mechanism
BitPower Loop effectively manages lending risks by setting collateral factors and liquidation mechanisms. The collateral factors are independently set according to market liquidity and asset value fluctuations to ensure system stability and lending security. When the value of the borrower's assets falls below a certain threshold, the liquidation mechanism is automatically triggered, ensuring the repayment of the borrower's debt and protecting the interests of the fund provider. In addition, the immutability and automatic execution characteristics of smart contracts further enhance the security and reliability of the system.
Conclusion
BitPower Loop achieves high security and stability through multi-level security measures and mechanism design. Its smart contracts are strictly audited and immutable, decentralized management eliminates single point failure risks, advanced encryption technology protects data and transaction security, distributed storage ensures fund security, and risk control mechanisms manage lending risks. These security features together build a reliable decentralized financial platform that provides users with secure, transparent and efficient financial services. | kjask_jklshd_cecbd37d6d57 | |
1,910,086 | Answer: Automatically adding hyperlinks in footnotes in MS Word | answer re: Automatically adding hyperlinks... | 0 | 2024-07-03T11:51:53 | https://dev.to/oscarsun72/answer-automatically-adding-hyperlinks-in-footnotes-in-ms-word-4k39 | {% stackoverflow 78701865 %} | oscarsun72 | |
1,910,085 | Spring Boot :: Core Features | Spring Boot is just the syntactical sugar over the the Spring Framework which allow us to direclty... | 27,947 | 2024-07-03T11:50:48 | https://dev.to/hra06/spring-boot-core-features-3jna | springboot | Spring Boot is just the syntactical sugar over the the Spring Framework which allow us to direclty work on the business requirement without thinking much about the infrastructure building.
It provides us the ability to do more with less.
It provides us a ton of features some of them are mentioned below.
1. AutoConfiguration of Spring Beans.
2. Standalone application development without the need of a webserver.
3. Provides the default configurations to streamline the setups.
4. Supports embeded servers like Tomcat, Jetty or Undertow.
5. Easy Microservices architecture with Spring Cloud Integration.
6. Spring Initializr tool to bootstarp new Spring Boot Project quickly.
7. Command Line Interface for quick development and testing the applications.
8. Spring Dev Tools
9. Spring Security
| hra06 |
1,910,081 | 5 AI Predictions In 2024 You Need To Know | Hello, readers! Prepare yourself for a thrilling journey through AI trends in 2024! It is of utmost... | 0 | 2024-07-03T11:47:26 | https://www.techdogs.com/td-articles/trending-stories/5-ai-predictions-in-2024-you-need-to-know | ai, technology, trends | **Hello, readers!**
Prepare yourself for a thrilling journey through [AI trends in 2024](https://www.techdogs.com/td-articles/techno-trends/artificial-intelligence-trends-2024)! It is of utmost importance to fathom about the destiny of AI as it gradually becomes part of us. Here are five main predictions for you to look out for:
- **Multimodal Generative AI Takes Center Stage**
"This AI utilizes different types of data such as text, images and audio files to build a more in-depth view." Picture a particular AI feeling any command you give, scrutinizing documents, and giving advice about money as it relates to facial expressions during a video call.
- **Open vs. Closed AI: The Debate Continues**
[Source](https://assets-global.website-files.com/5ef788f07804fb7d78a4127a/649543ff4f777e440bfe6f03_gpt%20meme%2024.jpg)
The fight continues between open-source and closed-source AI models. Although the divide for open-source backers might be decreasing in size, closed systems may outperform them even today. Ans: It remains a challenge to the superiority of some closed models over any open source models despite a narrowing gap, according to advocates for open source technologies who think that we are closing on this one too soon enough according to their view (we shall see).
- **The Rise of Personal AI Assistants**
Picture a personal artificial intelligence making use of your information continually, therefore taking you through major steps in life. Google Gemini, along with other comparable virtual assistants are already determining the direction that life will take by laying much emphasis on customer data and personalization.
- **AI Becomes a National Priority**
Around the world, governments are acknowledging the potential of AI. One of the significant milestones include the EU AI Act, which is a first comprehensive regulatory framework for AI in Europe.
- **Ethical AI Development Gains Momentum**
[Source](https://giphy.com/gifs/cbc-funny-comedy-3ohc19HprYBej5YDKM)
Organizations are prioritizing ethical considerations more today because AI is becoming more integrated into them. The aim of the AI Safety Alliance, which is made up of industry leaders working together towards this specific purpose, is to guarantee that AI use remains responsible and that no human rights violations are committed in its operation.
The AI future is looking up, with it being integrated into everything quite effortlessly and taking on personalistic tendencies such that morality becomes significant. We therefore need to be good in order to uncover the real capabilities of AI as we move through these thrilling surroundings.
**Want to delve deeper?** Explore the latest AI advancements and applications—click [here ](https://www.techdogs.com/td-articles/trending-stories/5-ai-predictions-in-2024-you-need-to-know)for your journey into the future of AI!
Dive into our content repository of the latest [tech news](https://www.techdogs.com/resource/tech-news), a diverse range of articles spanning [introductory guides](https://www.techdogs.com/resource/td-articles/curtain-raisers), product reviews, trends and more, along with engaging interviews, up-to-date [AI blogs](https://www.techdogs.com/category/ai) and hilarious [tech memes](https://www.techdogs.com/resource/td-articles/tech-memes)!
Also explore our collection of [branded insights](https://www.techdogs.com/resource/branded-insights) via informative [white papers](https://www.techdogs.com/resource/white-papers), enlightening case studies, in-depth [reports](https://www.techdogs.com/resource/reports), educational [videos ](https://www.techdogs.com/resource/videos)and exciting [events and webinars](https://www.techdogs.com/resource/events) from leading global brands.
Head to the **[TechDogs ](https://www.techdogs.com/)homepage** to Know Your World of technology today! | td_inc |
1,910,080 | Research and Development: Pioneering New Refrigeration Oil Solutions | Refrigeration Oil Market Scope The Refrigeration Oil market refers to the sales of lubricants... | 0 | 2024-07-03T11:46:16 | https://dev.to/aryanbo91040102/research-and-development-pioneering-new-refrigeration-oil-solutions-17ig | news | Refrigeration Oil Market Scope
The Refrigeration Oil market refers to the sales of lubricants specifically designed for use in refrigeration systems. These oils play an important role in ensuring the efficient operation of refrigeration compressors and preventing damage to the equipment. The market size and growth of this market can vary depending on factors such as the number of refrigeration systems in use, economic conditions, and advances in technology.
According to the new market research report "Refrigeration Oil Market by Type (Synthetic Oil (POE, PAG), Mineral Oil), Application (Refrigerators & Freezers, Air conditioner, Automotive AC System, Aftermarket), & Region(APAC, North America, South America, Europe, & MEA) - Global Forecasts to 2026", published by MarketsandMarkets™, is projected to reach USD 1.4 billion by 2026, at a CAGR. This report also includes a complete analysis of industry players covering their latest developments, refrigeration oil market share, size, CAGR, growth, demand, product portfolio, pricing, mergers, acquisitions, and collaborations.
Refrigeration Oil Market Drivers
The refrigeration oil market is driven by various factors, including increasing demand for refrigeration in various end-use industries such as food and beverage, pharmaceuticals, and retail, and the growth of the air conditioning and heat pump market. Additionally, technological advancements in refrigeration systems and the increasing use of natural refrigerants are also expected to drive the market growth. Government regulations and initiatives to promote energy-efficient cooling systems are also expected to drive the market.
Download PDF Brochure: [https://www.marketsandmarkets.com/pdfdownloadNew.asp?id=126068118](https://www.marketsandmarkets.com/pdfdownloadNew.asp?id=126068118)
Which is the Most Beneficial End User in Regerigeration Oil Market?
Significant Share in Referigeration Oil Market to be Contributed by Industrial Sector
The refrigeration oil industry is expected to benefit from rising demand for air conditioning systems in commercial buildings, homes, and automobiles. Refrigeration oils are necessary for the compressor to function properly. They serve as compressor lubricants, reducing friction, wear and tear, and forming a seal between the high- and low-pressure sides.
The air conditioner segment is predicted to account for a significant portion of the refrigeration oil industry. Due to the changing climate and rising levels of humidity and temperature in many regions, the use of energy-efficient air conditioners in homes and commercial buildings is increasing. The popularity of smart, connected air conditioning systems is growing in tandem with the growing trend of smart homes. Future product demand will be healthy due to ongoing technological advancements and the introduction of sustainable AC systems.
Refrigeration Oil Market Restraints
Some potential restraints for the refrigeration oil market include:
Environmental regulations
Substitute products
Technical challenges
High competition and low switching costs
Uncertainty in the demand and price of raw materials
Browse in-depth TOC on "Refrigeration Oil Market"
213 – Tables
58 – Figures
226 – Pages
This growth is primarily triggered by the increasing demand from the refrigerator & freezer, air conditioner, and automotive AC system applications. APAC is the largest refrigeration oil market due to a rise in the manufacturing of consumer appliances and automobiles. Furthermore, the changing lifestyle of consumer and rising income levels have led to higher demand for refrigerators & freezers and air conditioners, which, in turn, drives the refrigeration oil market. The growing demand for perishable food products along with growth in the pharmaceutical industry also drives the demand for refrigerators & freezers, fueling the growth of the refrigeration oil market.
View Detailed Table of Content Here: [https://www.marketsandmarkets.com/Market-Reports/refrigeration-oil-market-126068118.html](https://www.marketsandmarkets.com/Market-Reports/refrigeration-oil-market-126068118.html)
Refrigeration Oil Market Key Players
The key market players profiled in the report include
Eneos Holdings Inc. (Japan)
BASF SE (Germany)
Idemitsu Kosan Co. Ltd (Japan)
ExxonMobil Corporation (U.S.)
Royal Dutch Shell Plc. (Netherlands)
Total Energies SE(France)
China Petrochemical Corporation (Sinopec Corp)
Petroliam Nasional Berhad(Petronas)
FUCHS Petrolub SE (Germany)
Johnson Controls(Ireland)
Refrigeration Oil Market Segmentation
Refrigeration oil is a type of lubricant used in refrigeration systems to lubricate compressor motors and other moving parts. The market for refrigeration oil can be segmented by oil type, application, and region.
Synthetic oil is the largest oil type of refrigeration oil market.
Synthetic oil accounted for the largest share of the overall refrigeration oil market, in terms of value, in 2020. Synthetic oil is manufactured by combining synthetic base oils and additives. It has several advantages over conventional mineral oil due to its high performance in extreme conditions, better viscosity index, higher shear stability, and improved chemical resistance. In addition, its compatibility with low GWP and modern refrigerants gives them an added advantage over mineral oil.
Request Sample Pages: [https://www.marketsandmarkets.com/requestsampleNew.asp?id=126068118
](https://www.marketsandmarkets.com/requestsampleNew.asp?id=126068118
)
Refrigerators & Freezers is estimated to be the largest application of the refrigeration oil market during the forecast period.
Refrigerator & freezer is the largest application of refrigeration oil. This growth is attributed to the rising demand for perishable food items and changing the lifestyle of people in developed and developing regions. Refrigeration oil is used in domestic, commercial, and industrial refrigerators & freezers. In addition, the growing demand for refrigerated food products and increasing trade of food products are driving the refrigeration oil market in the refrigerator & freezer application.
APAC is estimated to be the largest market for refrigeration oil during the forecast period.
APAC is the largest market for refrigeration oil, followed by North America and Europe. APAC dominates the refrigeration oil market due to the rapid economic growth, particularly in the consumer goods and automobile industries in the region. The rapid urbanization in APAC, coupled with the improved living standard is driving the refrigeration oil market. The advantage of shifting production to the Asian region is that the cost of production is low here. Also, it is easier to serve the local emerging market. Also, due to the massive production and demand for consumer appliances and automobiles in countries such as China, Japan, India, and South Korea. This high growth is attributed to the growing manufacturing of consumer goods and automobile in the region. | aryanbo91040102 |
1,910,079 | Editing and Updating Notes using PATCH Request Method | As a follow-up to creating new notes using forms and request methods, we will now explore how to edit... | 0 | 2024-07-03T11:45:40 | https://dev.to/ghulam_mujtaba_247/editing-and-updating-notes-using-patch-request-method-14k7 | webdev, beginners, programming, php | As a follow-up to creating new notes using forms and request methods, we will now explore how to edit and update existing notes in the database using the PATCH request method.
When a user wants to edit a note, we need to provide a way for them to access the edit screen. This is where the edit button comes in.
## Adding an Edit Button
First, we need to add an edit button below the note on the single note screen in the `show.view.php` by removing the delete button code from the file. This button will move the user to the edit screen.
```php
<footer class="mt-6">
<a href="/note/edit?id=<?= $note['id'] ?>" class="inline-flex justify-center rounded-md border border-transparent bg-gray-500 py-2 px-4 text-sm font-medium text-white shadow-sm hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2">Edit</a>
</footer>
```
The edit button is placed in the footer section of the note display page. When clicked, it redirects the user to the edit screen, passing the note ID as a parameter in the URL.
## Editing Notes
The `edit.php` file controls the editing process. It retrieves the note from the database and authorizes the user to edit the note. If the user is authorized, the edit screen is displayed, allowing the user to make changes to the note.
```php
<?php
use Core\App;
use Core\Database;
$db = App::resolve(Database::class);
$currentUserId = 1;
$note = $db->query('select * from notes where id = :id', [
'id' => $_GET['id']
])->findOrFail();
authorize($note['user_id'] === $currentUserId);
view("notes/edit.view.php", [
'heading' => 'Edit Note',
'errors' => [],
'note' => $note
]);
```
The `edit.php` file uses the `Database` class to retrieve the note from the database. It then checks if the user is authorized to edit the note by comparing the user_id with the currentuserID. If authorized, the edit screen is displayed.
## Edit Note View
The `edit.view.php` file contains the code to display the note body for editing, with two buttons: Update and Cancel.
- Update button: submits the updated note to the server and store it in database
- Cancel button: cancels the editing process and redirects the user back to the notes screen.
```php
<label for="body" class="block text-sm font-medium text-gray-700">Body</label>
<div class="mt-1">
<textarea id="body" name="body" rows="3" class="mt-1 block w-full rounded-md border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 sm:text-sm" placeholder="Here's an idea for a note..."><?= $note['body'] ?></textarea>
<?php if (isset($errors['body'])) : ?>
<p class="text-red-500 text-xs mt-2"><?= $errors['body'] ?></p>
<?php endif; ?>
</div>
<div class="bg-gray-50 px-4 py-3 text-right sm:px-6 flex gap-x-4 justify-end items-center">
<button type="button" class="text-red-500 mr-auto" onclick="document.querySelector('#delete-form').submit()">Delete</button>
<a href="/notes" class="inline-flex justify-center rounded-md border border-transparent bg-gray-500 py-2 px-4 text-sm font-medium text-white shadow-sm hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2">Cancel</a>
<button type="submit" class="inline-flex justify-center rounded-md border border-transparent bg-indigo-600 py-2 px-4 text-sm font-medium text-white shadow-sm hover:bg-indigo-700 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2">Update</button>
</div>
```
The edit note view displays the note body in a textarea, allowing the user to make changes. The update button submits the updated note to the server and store it in database.
## Updating Notes
To update a note, we need to create a new file named `update.php` that checks the validation of the note and also checks the authorization of the user. This file will only allow authorized users to view and edit notes that are already present in the database.
```php
<?php
use Core\App;
use Core\Database;
use Core\Validator;
$db = App::resolve(Database::class);
$currentUserId = 1;
// find the corresponding note
$note = $db->query('select * from notes where id = :id', [
'id' => $_POST['id']
])->findOrFail();
// Check authorization
authorize($note['user_id'] === $currentUserId);
// Check validation
$errors = [];
if (!Validator::string($_POST['body'], 1, 100000)) {
$errors['body'] = 'A body of no more than 1,000 characters is required.';
}
// if no validation errors, then update
if (count($errors)) {
return view('notes/edit.view.php', [
'heading' => 'Edit Note',
'errors' => $errors,
'note' => $note
]);
}
$db->query('update notes set body = :body where id = :id', [
'id' => $_POST['id'],
'body' => $_POST['body']
]);
// redirect the user
header('location: /notes');
die();
```
## Adding Routes
To enable the editing and updating of notes, we need to add the following routes in route.php:
```php
$router->get('/note/edit', 'controllers/notes/edit.php');
$router->patch('/note', 'controllers/notes/update.php');
```
These routes will enable the editing and updating of notes using the PATCH request method.
## How it Works
When a user wants to edit a note, the user will be taken to the edit screen where user can make changes to the note. When a user submit changes, the `update.php` file will be called. This file will check if the user is authorized to edit the note and if the validation of the note is correct. If both checks pass, the note will be updated in the database and the user will be redirected back to the notes screen. If either check fails, the user will be redirected back to the edit screen with error messages.
By following these steps a user can easily edit and update the note using PATCH request method.
I hope that you have clearly understood it. | ghulam_mujtaba_247 |
1,910,078 | Django Passwordless Authentication: A Comprehensive Guide with Code Examples | Modern security techniques like passwordless authentication improve user experience by doing away... | 0 | 2024-07-03T11:45:33 | https://www.nilebits.com/blog/2024/07/django-passwordless-authentication-a-comprehensive-guide-with-code-examples/ | django, python | Modern security techniques like passwordless authentication improve user experience by doing away with the necessity for conventional passwords. By using this technique, the likelihood of password-related vulnerabilities including reused passwords, brute force assaults, and phishing is decreased. We will go into great length about creating passwordless authentication in Django in this post, along with best practices and comprehensive code samples to guarantee a safe and easy-to-use authentication system.
Introduction to Passwordless Authentication in Django
It is possible for users to log in without a password thanks to passwordless authentication. Alternatively, they use biometrics, one-time passwords (OTPs), or magic links for authentication. This tutorial will concentrate on setting up magic link authentication in Django, which uses the user's email address to deliver a one-of-a-kind, time-limited link for authentication.
Why Choose Passwordless Authentication?
Enhanced Security: Eliminates risks associated with password storage and transmission.
Improved User Experience: Simplifies the login process by removing the need to remember passwords.
Reduced Password Management: Decreases the burden of password resets and management for both users and administrators.
Setting Up Django for Passwordless Authentication
Prerequisites
Before we start, ensure you have the following:
Python installed (version 3.6+)
Django installed (version 3.0+)
An email service setup for sending authentication links
Project Setup
Create a new Django project and application:
```
django-admin startproject passwordless_auth
cd passwordless_auth
django-admin startapp authentication
```
Add the authentication app to your project's INSTALLED_APPS in settings.py:
```
INSTALLED_APPS = [
...
'authentication',
]
```
Configure Email Backend
Configure your email backend in settings.py to enable sending emails. For development purposes, you can use the console email backend, which prints emails to the console. For production, configure an actual email service provider.
```
# For development
EMAIL_BACKEND = 'django.core.mail.backends.console.EmailBackend'
# For production (example with SMTP)
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.example.com'
EMAIL_PORT = 587
EMAIL_USE_TLS = True
EMAIL_HOST_USER = 'your-email@example.com'
EMAIL_HOST_PASSWORD = 'your-email-password'
```
Create the User Model
Use Django's default user model or create a custom user model if you need additional fields. For this example, we'll use the default user model.
Create the Authentication View
In the authentication app, create a view to handle the authentication process. This view will generate and send a magic link to the user's email address.
```
# authentication/views.py
from django.contrib.auth import get_user_model
from django.contrib.sites.shortcuts import get_current_site
from django.shortcuts import render, redirect
from django.utils.http import urlsafe_base64_encode, urlsafe_base64_decode
from django.utils.encoding import force_bytes, force_text
from django.template.loader import render_to_string
from django.core.mail import send_mail
from django.urls import reverse
from django.http import HttpResponse
from django.utils.crypto import get_random_string
User = get_user_model()
def send_magic_link(request):
if request.method == 'POST':
email = request.POST.get('email')
user = User.objects.filter(email=email).first()
if user:
token = get_random_string(32)
user.profile.magic_token = token
user.profile.save()
current_site = get_current_site(request)
mail_subject = 'Your magic login link'
message = render_to_string('authentication/magic_link_email.html', {
'user': user,
'domain': current_site.domain,
'uid': urlsafe_base64_encode(force_bytes(user.pk)),
'token': token,
})
send_mail(mail_subject, message, 'no-reply@example.com', [email])
return HttpResponse('A magic link has been sent to your email.')
return render(request, 'authentication/send_magic_link.html')
```
Create the Profile Model
Extend the user model with a profile model to store the magic token.
```
# authentication/models.py
from django.contrib.auth.models import User
from django.db import models
class Profile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
magic_token = models.CharField(max_length=64, blank=True, null=True)
def __str__(self):
return self.user.username
```
Create the Authentication Token Verification View
Create a view to verify the token and authenticate the user.
```
# authentication/views.py
from django.contrib.auth import login
def verify_magic_link(request, uidb64, token):
try:
uid = force_text(urlsafe_base64_decode(uidb64))
user = User.objects.get(pk=uid)
except (TypeError, ValueError, OverflowError, User.DoesNotExist):
user = None
if user is not None and user.profile.magic_token == token:
user.profile.magic_token = None
user.profile.save()
login(request, user)
return redirect('home')
else:
return HttpResponse('Invalid or expired link')
```
Create Templates
Create templates for sending the magic link and for the email content.
send_magic_link.html
```
<!DOCTYPE html>
<html>
<head>
<title>Send Magic Link</title>
</head>
<body>
<h1>Send Magic Link</h1>
<form method="post">
{% csrf_token %}
<label for="email">Email:</label>
<input type="email" name="email" id="email" required>
<button type="submit">Send Magic Link</button>
</form>
</body>
</html>
```
magic_link_email.html
```
<!DOCTYPE html>
<html>
<head>
<title>Magic Link Login</title>
</head>
<body>
<p>Hi {{ user.username }},</p>
<p>Click the link below to log in:</p>
<a href="http://{{ domain }}{% url 'verify_magic_link' uid=uid token=token %}">Login</a>
</body>
</html>
```
Create URLs
Define URLs for the authentication views.
```
# authentication/urls.py
from django.urls import path
from .views import send_magic_link, verify_magic_link
urlpatterns = [
path('send-magic-link/', send_magic_link, name='send_magic_link'),
path('verify-magic-link/<uidb64>/<token>/', verify_magic_link, name='verify_magic_link'),
]
```
Include the authentication URLs in the main project URLs.
```
# passwordless_auth/urls.py
from django.contrib import admin
from django.urls import path, include
urlpatterns = [
path('admin/', admin.site.urls),
path('auth/', include('authentication.urls')),
]
```
Final Touches
To complete the setup, make sure you migrate the database to create the necessary tables.
```
python manage.py makemigrations
python manage.py migrate
```
Create an admin user to manage the application.
python manage.py createsuperuser
Testing the Implementation
Start the Development Server: Run the Django development server.
python manage.py runserver
Access the Magic Link Form: Open your browser and navigate to http://localhost:8000/auth/send-magic-link/. Enter an email address associated with a user account in your database.
Check the Email: For development, the email will be printed in the console. In a production setup, check the user's email inbox.
Click the Magic Link: Click the link in the email to log in.
Security Considerations
Token Expiration: Implement token expiration to ensure that links are only valid for a limited time.
```
from datetime import timedelta
from django.utils import timezone
class Profile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
magic_token = models.CharField(max_length=64, blank=True, null=True)
token_created_at = models.DateTimeField(auto_now_add=True)
def is_token_expired(self):
return self.token_created_at < timezone.now() - timedelta(minutes=15)
```
Conclusion
An easier-to-use and safer option to conventional password-based authentication is passwordless authentication. You may improve your application's security and give users an easy way to log in by using Django's magic link authentication feature. You may use this article to help you get started with passwordless authentication in your Django applications by seeing a thorough overview and in-depth code samples.
For more insights on enhancing your Django applications, check out [Nile Bits' blog](https://www.nilebits.com/blog/) where we cover various topics on web development and cybersecurity.
References
[Django Documentation](https://docs.djangoproject.com/) | amr-saafan |
1,910,077 | Beware of base rate fallacy | Let's say some scholars have done a research on the relationship between career advancement and... | 0 | 2024-07-03T11:45:23 | https://dev.to/doublex/beware-of-base-rate-fallacy-4ogd | Let's say some scholars have done a research on the relationship between career advancement and overconfidence/underconfidence(with respect to the [Dunning-Kruger effect](https://en.wikipedia.org/wiki/Dunning%E2%80%93Kruger_effect) in this setup) in country A, and the result is as follows:
**Out of all those being promoted in the workplace to some extents in country A, 80% and 20% of them are mostly overconfident and underconfident respectively.**
Then, some media across the globe uses this result to claim the following:
**Of every other aspect being supposedly equal, being mostly overconfident is generally more advantageous to our career than being mostly underconfident in country A.**
Assuming that the test is indeed fair and reproducible in country A with good sampling, and career advancement, overconfident as well as underconfident are all well-defined and carefully examined(maybe even using a double-blinded study), will you just believe in what those media suggested?
At the very least, if you're already aware of the [base rate fallacy](https://en.wikipedia.org/wiki/Base_rate_fallacy), you probably won't jump to conclusions so easily, because you'll want to know the following 2 ratios as well:
1. The ratio between the mostly overconfident and underconfident people in country A
2. The ratio between those advancing well in their careers and those who don't in country A
(Strictly speaking, the 2nd ratio doesn't matter much in this fallacy, but knowing this ratio can make the numbers even clearer)
For example, if the ratio between the overconfident and underconfident people in country A is 9:1, and that between those advancing well in their careers and those who don't is 19:1, then the whole experiment actually points to the opposite result - **Being underconfident is indeed better for the career of those in country A.**
It's because in the overconfident group, only (1 / 19)[8 / (8 + 2)] / [9 / (9 + 1)] = 0.05(0.8 / 0.9) = 4.444...% are advancing well in their careers, while that in the underconfident group is (1 / 19)[2 / (8 + 2)] / [1 / (9 + 1)] = 0.05(0.2 / 0.1) = 10%, which is 10% / 4.444...% = 2.25 times of the former.
Although I don't think any of you will fall into the base rate fallacy so easily, time and again I've seen some media citing some psychological research results without much contexts, and then just use those results to make some likely dubious claims.
While I don't think those psychologists themselves will ever fall into such fallacies, at least not unknowingly, I just sense an urge to write this article, perhaps because I start to grow tired of reading how those media habitually cite more and more of such psychological researches this way.
Actually, the example in this article is already much better than what I've read countless times, because the majority of what what I've read won't even specify that the result is only known to generally apply to career advancement in country A(even if it might do have wider applications) with all other aspects being equal, since they'll instead make claims like this:
**Being overconfident will definitely make you more successful then being underconfident.**
However, if you can spot the base rate fallacy right away, you should be able to figure the rest without much trouble, like "success isn't just about career advancement", "career advancement isn't just about confidence", "what applies to country A doesn't necessarily apply to the rest of the world", "what generally applies to the majority can have exceptions as the non-negligible minority", so if more and more of the targeting audience are aware of all this over time, maybe the media will gradually change their habits of taking psychological research results out of contexts :) | doublex |
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