teleren/devto huggingface dataset:
Unlocking the Power of Docker: Explore Its Versatile Use Cases! 🐳
Tags: devops, docker, development, appmigration
Published: 2023-05-05 09:53:37


Docker has revolutionized the way we develop, package, and deploy applications. Its lightweight, containerization approach enables seamless and efficient deployment across various environments. Let's explore some key use cases where Docker truly shines:

1️⃣ Application Deployment and Isolation: Docker allows you to package your application along with its dependencies, libraries, and configurations into a single container. This portable and self-contained unit ensures consistent and reliable deployments, regardless of the underlying infrastructure.

2️⃣ Microservices Architecture: Docker is perfect for building and deploying microservices-based applications. By containerizing each microservice, you can independently develop, test, and scale components, achieving enhanced modularity, fault isolation, and scalability.

3️⃣ Continuous Integration and Deployment (CI/CD): Docker simplifies the CI/CD pipeline by providing a consistent environment from development to production. You can build, test, and deploy applications in containers, ensuring the software works seamlessly across different pipeline stages.

4️⃣ Scalable and Elastic Environments: Docker's container orchestration tools like Docker Swarm and Kubernetes enable effortless scaling of applications. By leveraging Docker's auto-scaling capabilities, you can efficiently manage resources, handle traffic spikes, and ensure the high availability of your services.

5️⃣ Hybrid Cloud and Multi-Cloud Deployments: Docker's flexibility allows you to build applications that can run seamlessly across different cloud providers or hybrid environments. It provides consistency in deployment and eliminates the need for reconfiguring applications when moving between cloud platforms.

6️⃣ Development and Testing Environments: Docker simplifies the setup of development and testing environments. Developers can use Docker to quickly spin up isolated environments with all the necessary dependencies, reducing setup time and ensuring consistency across the team.

7️⃣ Legacy Application Modernization: Docker can help modernize legacy applications by containerizing them without significant changes to the underlying codebase. This approach allows for a smoother transition, improved maintainability, and efficient utilization of resources.
A Quick Intro to Relational Database Components
Tags: webdev, database, sql, tutorial
Published: 2023-05-05 09:50:22

Databases store and organize data. So, think of relational databases (RDB) as a type of database that organizes data into tables and establishes the relationships between these tables. 

> But the goal of having a database is more than just to store data. 

You'd also need to access the stored data and perform various operations. That's where SQL comes in. [Structured Query Language](https://aws.amazon.com/what-is/sql/#:~:text=Structured%20query%20language%20(SQL)%20is,relationships%20between%20the%20data%20values.) allows you to manage and manipulate the data stored in a relational database. 

It's no wonder why relational databases are also called **SQL databases**.


![RDB showing how to use SQL](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/68rge4zez7yittzh1pid.png)

In a RDB, **tables** are like smaller containers that hold similar pieces of information. For example, you could have a customer management database containing two tables. The first table stores customer information, and the second stores order info.

Every table has columns and rows (similar to spreadsheets). Columns contain specific information about the data. In our customer example, columns could be name, contact info, or address.

**Rows** contain all the information about a specific record or customer. In order to retrieve a record or row in our table, we need a primary key. As a result, a primary key has to be unique for every record in a table.



![Components of a Relational Database](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/hokb6lyux9qicmtvym7f.png)

To link these tables in a RDB together, we use foreign keys. 

A **foreign key** is a field in one table that references the primary key of another table. In this case, the orders table would have a foreign key referencing the customer table's primary key.


![Relational Databases and components](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/b7y9ghih666nq3051059.png)
Oplog Update Version ($v) Digest
Tags: mongodb, database, tutorial
Published: 2023-05-05 09:24:21

## Oplog Update Version ($v) Digest

This document describes how the MongoDB oplog update version (`$v`) works. It will be useful to anyone who’s into trying to understand the internal parts of the MongoDB oplog format.


The MongoDB oplog is an internal part of the MongoDB replication system. It is also used for other purposes, such as creating incremental backups or replaying changes to data in order to perform point-in-time recovery.

## What role does the $v field play into the oplog entries

This field was first introduced in Mongo 3.6, and it’s placed under the `o` field. It represents the version of the oplog format used for updates. Initially the only value of this field was `1`, and nothing else changed. It kept defining the operations in terms of `$set`/`$unset`.

```
{
    "op": "u",
    "ns": "db.collection",
    "o": {
        "$v": 1,
        "$set": {
            "foo": "bar"
        }
    },
    "o2": {
        "_id": "xxxxxxxxxxxxxxxxxxxxxxxx"
    },
    "v": 2
}
```

In Mongo 4.6, the `$v` field started using the value `2`. It resulted in a change in the format used to represent the operations. A new `diff` field was added. This field is a recursive structure made of the following optional fields:
- `u`: Top level update (old `$set`)
- `d`: Top level unset (old `$unset)`
- `i`: Nested field update. (old `$set` of the nested field)
- `s`-fields (fields starting by `s`) they can either be:
  - array operations; or
  - nested field operations

```
{
    "op": "u",
    "ns": "db.collection",
    "o": {
        "$v": 2,
        "diff": {
            "u": {
                "foo": "bar"
            }
        }
    },
    "o2": {
        "_id": "xxxxxxxxxxxxxxxxxxxxxxxx"
    },
    "v": 2
}
```

## Examples of $v:2 operations to $v:1 operations
 
```
// u
{ "diff": { "u": { "foo": "2", "bar": "xx" } } }
{ "$set": { "foo": "2", "bar": "xx" } }


// d
{ "diff": { "d": { "foo": false } } }
{ "$unset": { "foo": true } }


// i
{ "diff": {"i": { "foo": { "bar": 2 } } } }
{ "$set": { "foo.bar": 2 } }


// nested field s+i
{ "diff": { "sa": { "i": { "foo": 3, "bar": 1 } } } }
{ "$set": { "a.foo": 3, "a.bar": 1 } }


// nested field s+d
{ "diff": { "sa": { "d": { "foo": false } } } }
{ "$unset": { "a.foo": true } }


// array field u
{ "diff": { "sfoo": { "a": true, "u0": 2 } } }
{ "$set": { "foo.0": 2 } }


// array field d
{ "diff": { "sfoo": { "a": true, "u0": null } } }
{ "$unset": { "foo.0": true } }
```


## References
https://jira.mongodb.org/browse/SERVER-32240
https://github.com/meteor/meteor/blob/master/packages/mongo/oplog_v2_converter.js
May the Forms be with You: A Jedi's Guide to onBlur, onChange and onTouched
Tags: onblur, onchange, ontouched, reacthookform
Published: 2023-05-05 09:23:49

React Hook Form (RHF) knows the modes: onChange, onBlur and onTouched. If you are familiar with RHF but don’t know what they do, you could use some help of a Jedi master!

<img width="100%" style="width:100%" src="https://media.giphy.com/media/8hMD9YakVza3452SpN/giphy.gif">

## onChange

Let's start with onChange. Like a Jedi using the Force to feel the will of the user, onChange is triggered whenever there is a change in the value of an input field. Whether the change comes from the user typing or from a programmatic change of the value, onChange is there to help you update the value of the input field as the user types.

But beware, young Padawan, for there is a dark side to onChange. If you're not careful, it can be dangerous and negatively impact the performance of your app. Imagine you have a text field where users can enter their name. If you use onChange to update the value with every keystroke, it can lead to unnecessary re-rendering and delays in your app. So use onChange with care and wisdom.

## onBlur

Now let's move on to onBlur. Like a Jedi focusing on feeling the energy of their surroundings, onBlur is triggered when an input field loses focus. For example, if the user moves to another field, onBlur is triggered to help you validate the entered value.

But be careful, young Jedi, as there are certain circumstances where onBlur is not triggered. For example, if the user clicks the browser's back button or refreshes the page, onBlur is not triggered. So if you're using onBlur to validate data, make sure to use other methods to ensure your data is safe.

## onTouched

Last but not least, onTouched. Like a Jedi using their powers to sense the thoughts of others, onTouched is triggered when a user touches or interacts with an input field. This is useful if you want to let the user know which fields they have already touched and where they still need to work.

But beware, as onTouched can sometimes be misleading, just like the dark side of the Force. It doesn't necessarily mean that data has actually been entered into the input field. Sometimes a user can touch a field and then decide not to enter data into it. So use onTouched in conjunction with other validation methods to ensure your data is accurate and complete.
Story of my life
Published: 2023-05-05 09:15:09

my name is Leilla carmene Ntirampeba, and i'm very happy to share with you my life story.

actually, I'm just an ordinary girl from middle class who live with my mother and I also have my two sisters  our life was good in my family until 2015 there is when everything changed because in the same year we became refugees and During the war in my country my mother was tortured because she was a human right agent and this made her an handicap and here is when our life became taught but however we survived and we still moving on.
thank you for reading my story
Iconify em React Native
Tags: reactnative
Published: 2023-05-03 14:50:41

O Iconify é uma biblioteca popular de ícones para a web e aplicativos móveis, incluindo o React Native. Ele fornece um conjunto abrangente de ícones que podem ser facilmente integrados em seus projetos. Neste artigo iremos fazer sua instalação e aprender um pouco sobre seu uso:

**Instalando o Iconify -**

Certifique-se de ter o Node.js e o npm (gerenciador de pacotes do Node.js) instalados em seu sistema. Em seguida, abra o terminal e execute o seguinte comando para instalar a biblioteca Iconify:

```
npm install @iconify/react-native
```

**Utilizando o Iconify -**

Depois de instalar a biblioteca, você pode importar os componentes necessários no seu arquivo de componente React Native. Geralmente, você importará o componente Icon, que é usado para exibir um ícone específico. Você também pode importar ícones específicos do pacote de ícones que deseja usar. Aqui está um exemplo de importação:

```
import Icon from '@iconify/react-native';
import homeIcon from '@iconify-icons/mdi/home';
```

Agora você pode usar o componente Icon para exibir um ícone em seu aplicativo. O componente Icon requer duas propriedades principais: icon e size. A propriedade icon define qual ícone será exibido e a propriedade size define o tamanho do ícone. Aqui está um exemplo de uso:

```
<Icon icon={homeIcon} size={24} />
```

Neste exemplo, estamos exibindo o ícone "home" com tamanho 24. Você também pode usar outras propriedades para personalizar a aparência do ícone, como color para definir a cor do ícone e style para adicionar estilos CSS adicionais ao ícone.

```
<Icon icon={homeIcon} size={24} color="#ff0000" style={{ marginLeft: 10 }} />
```

Este é um exemplo básico de como utilizar o Iconify em um projeto React Native. Lembre-se de que você pode explorar a documentação oficial do Iconify para obter mais informações sobre os recursos e opções disponíveis.(https://github.com/oktaysenkan/react-native-iconify/blob/main/CONTRIBUTING.md).

Obrigado por ler até aqui.
Kmean: Selecting the number of clusters
Tags: machinelearning, database, ai, webdev
Published: 2023-05-05 09:06:23

What is the criteria for setting the number of clusters ? .Is it just selected by vibes and is there a standard approach to selecting this.

This are very valid question has a machine learning expert .In the article we would be look at the best way to pick the number of cluster .

The widely accepted method of picking the number of cluster is the ELBOW METHOD

Remember that clustering is about 

1. Minimizing the distance between points in a cluster

2. Maximizing. the distance between clusters

For Kmeans this two occurs at the same time .The distance between points in a cluster is measures using 

> within-cluster sum of squares or WCSS

WCSS is a measure developed within the ANOVA framework.If we minimize WCSS, we have reached the perfect clustering solutions. The elbow of the graph shows the  best possible number of cluster to be used. 

The below screenshot shows the best solution for this :


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/2wo24xdzo5xgray4fxzq.png)


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/gozkdt0mht230vluxwwi.png)
Why I love to use Ant Design to build scalable web app
Tags: webdev, designsystem
Published: 2023-05-05 08:55:42

As a developer, you know that creating a scalable and maintainable web application is no easy feat. Fortunately, Ant Design can help. This powerful and flexible design system offers a wide range of UI components, icons, and layouts that can be easily customized and integrated into any project. What I love about Ant Design is its consistency and standardization, which make it easy to create intuitive and user-friendly interfaces. The reusable UI components also save me time and effort, while the flexibility and customizability of the system allow me to modify the components to fit the specific needs of each project. Whether you're building a small app or a large enterprise-level system, Ant Design can help you create a professional-looking interface with ease.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/yb8hs97sibnqp5i48l9t.png)
**Consistency and Standardization**
One of the main reasons I love using Ant Design is the consistency and standardization that it provides. Ant Design follows a consistent design language, making it easy for developers to create intuitive and user-friendly interfaces. The UI components are designed to be reusable and consistent across different applications, making it easier for developers to build scalable and maintainable applications.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/owz4lc2i7cwofw90d9c5.png)
**Flexibility and Customizability**
Another reason I love Ant Design is its flexibility and customizability. Ant Design offers a wide range of UI components and layouts that can be easily customized to fit the needs of any project. Developers can easily modify the styles and behaviors of the components to match the requirements of the project.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/m6xdzptv9eu2k2wrofqa.png)
**Accessibility**
Ant Design is designed to be accessible and inclusive. The design system follows the WCAG 2.1 guidelines, ensuring that the components are accessible to all users, including those with disabilities. This is a crucial aspect of web development, as accessibility ensures that all users can access and use the application without any barriers.


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/rszyaxelzk4hgm4npjyf.png)
**Active Development and Support**
Ant Design is an open-source project that has a large and active community of developers. The project is constantly being updated with new features, improvements, and bug fixes. The community also provides excellent support, making it easy for developers to get help when they need it.

In conclusion, Ant Design is an excellent choice for building scalable web applications. Its consistency, flexibility, accessibility, and active development support make it a great choice for developers of all skill levels. Give it a try https://ant.design/
Inertia boost my fullstack development up to 60%✨, here is why
Tags: laravel, javascript, webdev
Published: 2023-05-05 08:55:11

As a web developer, you know that building a web application from scratch can be time-consuming, especially when it comes to the front-end and back-end. From my experience Inertia.js can boost my full-stack development time by up to 60%? In this article, I'll breakdown why Inertia.js is a game-changer for small web applications.

**Faster Development Time**
With Inertia.js, you can build both the server-side and client-side of your application with just one codebase. This means you don't have to spend time writing and maintaining separate front-end and back-end code, resulting in faster development time. Plus, having a unified API for building small to medium-sized web applications allows you to build applications with ease and speed.

**Minimal Learning Curve**
If you're already familiar with popular front-end frameworks like Vue.js, React, or Svelte, you'll have no problem picking up Inertia.js. The learning curve is minimal, and you'll be up and running in no time. This means you can start building your application without wasting time on learning a new framework.

**Improved Performance**
Inertia.js uses partial hydration, which improves the performance of your application by only re-rendering the parts of the page that need updating instead of re-rendering the entire page. This means your web application will load faster and provide a smoother user experience. With faster page loads, your users will be more engaged with your application, resulting in higher retention rates.

**Simple API**
Inertia.js provides a simple and intuitive API, making it easy to build small web applications. The API reduces the chances of errors and bugs, saving you time and resources on testing and debugging. With Inertia.js, you can focus on building your web application's functionality and user experience rather than worrying about complicated API structures.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/v0d1mh6tvfrxpdr1449c.png)
Kachow ✨✨, Inertia.js is the secret weapon for developers who want to create web applications in a snap. Its unified API and support for popular front-end frameworks make it easy to learn and use. Inertia.js is the perfect choice for building small web applications. So, if you're a developer looking for a web development framework that will save you time and effort.
Learn Programming by making Projects
Tags: learning, programming, opensource, webdev
Published: 2023-05-05 08:51:14

As we all know projects are very essential either for building our portfolio to show case our skills or about particular programming language.
But we often get confused how to start where to go and by thinking all of this we again just sit and start to scroll the social media
(we == I)🥹 

So here I found a website call
**Codementor.io**
[Codementor.io](https://www.codementor.io/)

Why to choose this website btw it's totally free 🆓
Here I found multiple ways to build multiple projects from scratch in multiple programming language from Python to Angular...

It has user friendly UI, The site will guide you before starting a project what basic skills you first need to start a particular project, 
Then how to set up the environment, 
still stucked then it has discussion forum too,
At the end if you still unable to build a project try to see the solution from mentors.

So that's all keep hunting keep learning 💹
HDhub4u.su Official Website 2023 – Download Latest Hollywood HD Movies
Tags: hdhub4, hdhub4uhindidubbed
Published: 2023-05-05 08:45:11


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/dlf7rjopzamgy1uk78n5.PNG)

HDhub4u 2023 – Download Latest Hollywood  Movies: [HDhub4u](https://hdhub4u.su/) is an online streaming service that offers a wide range of Hollywood HD movies. The website provides the latest movies in HD quality, including action, adventure, comedy, horror, drama, and more. You can also find classic films, documentaries, and even special editions.
Websitr:https://hdhub4u.su/

The movies are available for download in [Web Series](https://hdhub4u.su/series/) 1080p HD and can be streamed on your computer or mobile device. With HDhub4u, you can watch the latest [Hollywood movies](https://hdhub4u.su/) wherever you are.

If you want to download Bollywood, Hollywood, and South Indian movies in HD for free, then they allow downloading your desired Hindi movie from the Hdhub4u website. Many people are downloading Hollywood  Series movies from there and you can see below about movie downloads.

HDhub4u 2023 – Download Latest Hollywood HD Movies
Disclaimer – We do not promote piracy and are strictly against online piracy. We understand and fully comply with the copyright acts/clauses and ensure we take all steps to comply with the Act. Through our pages, We intend to inform our users about piracy and strongly encourage our users to avoid such platforms/websites. As a firm, we strongly support the copyright act. We advise our users to be very vigilant and avoid visiting such websites. So we don’t link these sites on Our page.

HDhub4u 2023 Website
This website’s current domain is hdhub4u.tel. It has categories like Movies with genres (Action, Drama, Comedy, Crime, Horror, Thriller, Romance, Sci-fi, etc.), Trailers, TV Shows, 300MB movies, Web Series, Movie Series Collection, HQ – South India Dubbed movies and more. In addition, the site has a search bar option where users can directly type a movie name to get it quickly.

Website NameHdhub4uType of SiteTorrentAppAvailable (Hd hub4u App Download Apk)Available inEnglishContentsMovies, Web Series, TV Shows, SerialsLanguagesBollywood, Hollywood, Kollywood, Tollywood, Hindi DubbedVPNYesCurrent statusOfflineIs It SafeNoPopularity Score3.5/5.0Formats720p, 1080p, 2160p 4K, and Blu-ray quality

HDHub4u Latest movies
These are the latest movie that has been leaked on HDHub4u,

Almost Pyaar With DJ Mohabbat
Daman
Faraaz
The Woman King
Knock at the Cabin
The Whale
Nate Bhayankara
Tanuja
Michael
Writer Padmabhushan
Premadesam
Suvarna Sundari
Mayagadu
Run Baby Run
Bommai Nayagi
Naan Kadavul Illai
Thalaikoothal
The Great Indian Kitchen
Vedikettu
Iratta
Romancham
Momo in Dubai
Pathaan
Akhanda
Puss in Boots: The Last Wish
Zindagi Shatranj Hai
Junglemahal: The Awakening
Vallavanukku Vallavan
Ayisha
Vanitha
Varisu (Telugu – Varasudu)
Thunivu (Telugu – Thegimpu)
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HDhub4u Alternatives
 [Mp4moviez](https://mp4moviez.su/)