teleren/devto huggingface dataset:
Teste
Tags: html, css, javascript
Published: 2023-05-09 19:13:24

Estou escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes. Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

## Esse deve ser um titulo

Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

Estou escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes. Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

## Mais informação

Estou escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes. Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

1. item a primeiro
2. item b segundo
3. item c terceiro


O upload de imagem falhou isso é estranho não entendi o motivo

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/0tczddoc9i6j2jcz8n6i.png)

### Outro título

Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

```js
const getData = () => ({
    console.log('ok')
})
```

Estou escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes. Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

### Outro título

Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

Estou escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes. Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

### Outro título

Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.

Estou escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes. Escrevendo um texto que deve ser um paragrafo apenas e repetirei esse trecho de código mais algumas vezes.
Комментарий С++.
Tags: programming, cpp, tutorial, coding
Published: 2023-05-09 18:59:20

Ассаламу алейкум, уважаемый программист, сегодня мы поговорим о комментировании на языке программирования C++! Прежде чем мы начнем, важно понять, почему нам нужно использовать аннотацию. Запомни. Комментарии делятся на открытые и закрытые!

В языке программирования C++ комментарий пишется после символа `//`. Этот символ допустим только для однострочного комментария. Вы можете использовать его для нескольких строк. Для этого вам нужно поставить `//` в каждой строке.

**Например::**

```
// Это было написано для комментария.
// Вторая строка написана для комментария.
cout << "Hello World";
```

В языке программирования C++ мы также можем записать оператор в виде комментария в конце оператора.

**Например::**

```
cout << "Привет, мир"; // Этот комментарий (оператор выхода)
```

Многострочный комментарий на языке программирования C++.

`Многострочные комментарии начинаются с /* и заканчиваются */.`

- Любой текст или операторы `*/ с /*` в середине набранного кода будут игнорироваться.

**Например::**

```
/* Это написано для комментария
применяется к нескольким строкам*/
cout << "Научился оставлять комментарии";
```

**Открытый комментарий** - это один из комментариев, который виден пользователю.Например, при входе в систему мы можем привести пример сообщения, которое сообщает, правильный или неправильный ваш пароль для входа!

**Закрытый комментарий** - это комментарии, которые оставляются в качестве комментария к части программы, чтобы не было необходимости в повторных разъяснениях между программистами!

Для чего используется сама аннотация?

1. Комментарий можно использовать для объяснения кода языка программирования C++!

2. Комментарии можно использовать, чтобы сделать код читабельным.

3. Не нужно объяснять свой код вашей команде, когда вы работаете в команде! потому что, оставив комментарий, у вас будет возможность объяснить код, который вы написали!

Обычно мы используем` // `для короткого, т. е. однострочного комментария, и `/* */` для однострочного или нескольких комментариев.
С++ Новая строка.
Tags: beginners, cpp, programming, tutorial
Published: 2023-05-09 18:45:53

Ассаламу алейкум, уважаемый программист, сегодня мы научимся вставлять новую строку в язык программирования C++.

Вы можете использовать символ ```\n''` для вставки новой строки:

**Например::**

```
#include <iostream>

using namespace std;

int main()
{

cout << "Men C++ o'rganishni boshladim\n";
cout << "Judayam qiziqarli va o'rganishaga oson";

return 0;
}
```

`**Подсказка:** два символа \n друг за другом создают пустую строку:`

**Например::**

```
#include <iostream>

using namespace std;

int main()
{

cout << "Sizga maslahatim dasturlashni C yoki C++ dan boshlang\n\n";
cout << "Qani kettik";

return 0;
}
```

Другой способ вставить новую строку — использовать специальную команду `«endl»`:

**Например::**

```
#include <iostream>

using namespace std;

int main()
{

cout << "I am learning C++" << endl;
cout << "Salom Dunyo";

return 0;
}
```

`"\n"` и `"endl"` также используются для разрыва строк. Однако чаще всего используется `"\n"`.

`Но что такое \n?`

Символ новой строки `(\n)` называется управляющей последовательностью, и он заставляет курсор перемещаться в начало следующей строки на экране. Это приведет к созданию новой строки.

`Примеры других реальных escape-последовательностей:`


![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/zvhwz5mkm9hjzoroqt36.png)
Оператор выпуска С++.
Tags: beginners, cpp, coding, programming
Published: 2023-05-09 18:36:37

Ассаламу алейкум, сегодняшний урок будет коротким, сегодня мы поговорим с вами об операторе выпускать в языке программирования C++.

В языке программирования C++ оператор вывода записывается вместе с ключевым словом `cout`.

Оператор — это язык программирования, который направлен на определенную цель, например, в качестве примера можно привести оператор выпуска C++, оператор повторения, оператор условия и многие другие. Среди операторов; заканчивается Некоторые операторы в основном закрываются фигурными скобками {}, часть выполняемой работы.

`Вот пример оператора выпускать на языке программирования C++:`

```
#include <iostream>

using namespace std;

int main()
{
  cout << "Hello World! Ilmhub IT school";

  return 0;
}
```

`Результат: Привет, мир! ИТ-школа Ильмхаба`

Вы можете сколько угодно использовать `cout `в языке программирования C++. Обратите внимание, что это будет выводиться в каждой строке при использовании оператора вывода ниже.Взгляните на код ниже.

```
#include <iostream>

using namespace std;

int main()
{

  cout << "Salom Dunyo";
  cout << "Ilmhub IT school";

  return 0;
}
```

`Результат: Привет, мир
Результат: Ilmhub IT школа`
🚀 React.js: Implementando Login Social com Facilidade 🚀
Tags: webdev, react, loginsocia
Published: 2023-05-09 17:03:47

Olá, colegas desenvolvedores! Hoje, gostaria de compartilhar com vocês uma maneira simples e eficiente de implementar o login social em seus aplicativos React.js. O login social é uma ótima maneira de melhorar a experiência do usuário, permitindo que eles se conectem rapidamente usando suas contas de mídia social, como Google ou Facebook.
Vamos começar com um exemplo básico de como implementar o login social com o Google:

> 1. Primeiro, instale a biblioteca react-google-login:

```
npm install react-google-login
```

> 2. Importe o componente GoogleLogin em seu arquivo:
javascript

```
import { GoogleLogin } from 'react-google-login;
```

> 3. Adicione o componente GoogleLogin ao seu código e forneça suas credenciais do Google:

```
<GoogleLogin
  clientId="YOUR_GOOGLE_CLIENT_ID"
  buttonText="Login com Google"
  onSuccess={responseGoogle}
  onFailure={responseGoogle}
/>
```

> 3. Crie a função responseGoogle para lidar com a resposta do Google:

```
const responseGoogle = (response) => {
  console.log(response);
  // Aqui você pode salvar os dados do usuário em seu banco de dados ou gerenciar o estado do aplicativo
};
```

E é isso! Com apenas algumas linhas de código, você implementou o login social com o Google em seu aplicativo React.js. Claro, você pode personalizar ainda mais a aparência e o comportamento do componente GoogleLogin de acordo com suas necessidades.
Lembre-se de que, como desenvolvedores seniores, devemos sempre nos esforçar para melhorar a experiência do usuário e facilitar o processo de login. O login social é uma excelente maneira de fazer isso, e com bibliotecas como react-google-login, a implementação se torna rápida e fácil.
Se você tiver alguma dúvida ou quiser compartilhar suas experiências com o login social, sinta-se à vontade para comentar abaixo. Vamos aprender juntos e ajudar uns aos outros a crescer como desenvolvedores! 💻🌟
Linear Search
Tags: programming, computerscience, algorithms, csharp
Published: 2023-05-09 18:01:59

A search algorithm is a systematic procedure used to find a particular element or set of elements within a data structure or data set. This procedure can be implemented in many different ways, depending on the type of data structure and the specific requirements of the application.

One of the simplest and most intuitive search algorithms is the **linear search**, also known as **sequential search**.

## How it works

Linear search is a search algorithm that starts at the beginning of the list and compares each element with the target value. If a match is found, the algorithm returns the index of the matching element; otherwise, it returns a value indicating that the element is not in the list.

```csharp
public static int LinearSearch(int[] array, int target)
{
    var n = array.Length;

    for (var i = 0; i < n; i++)
    {
        if (array[i] == target)
        {
            return i;
        }
    }

    return -1;
}
```

## Time Complexity

The time complexity of the linear search algorithm is determined by the number of comparisons it must perform. In the best case, the element is found on the first comparison and therefore the time complexity is O(1). In the average case, the time complexity is O(n/2). In the worst case, when the target element is not in the list or is at the end of the list, the complexity is O(n), where n is the number of elements in the list.

## Space Complexity

The algorithm requires only a small constant amount of memory that is used to store the cycle counter and target value during the search process. Thus, the space complexity is O(1).

## Conclusion

Linear search emerges as an easily comprehensible and implementable algorithm, suitable for locating an element within any data structure that supports sequential access, such as arrays, lists, and strings. It does not necessitate the data to be in a particular order, contributing to its versatility. However, it may not be the best fit for searching large data sets due to its inefficiency as the size of the data set escalates, causing the time complexity to increase proportionally. This also makes it unsuitable for real-time applications or scenarios necessitating swift and frequent search operations.

Despite this, more efficient search algorithms exist, including binary search and hash-based search. Nevertheless, for smaller or unordered data sets, the simplicity and ease of implementing a linear search can often outweigh its relative inefficiency, making it a potent tool in the right circumstances.

## References

- Algoritmi e programmazione in C di Francesco Oliveri, Aracne editrice (Italian book)
phanmemmaytinh.com.vn - Phần mềm máy tính
Published: 2023-05-09 17:51:10

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CLI or GUI?
Tags: beginners, python, programming, learning
Published: 2023-05-09 17:48:15

> 2021, I started learning Python. Now two have passed, and I still ask myself this question every time I start a new project:
> _Should I build a CLI or a GUI wrapper around my application?_


**Here are some up and downsides about CLI and GUI´s:**

## GUI 🖥️
⬆️ GUI (Graphical User Interface) is suitable for showcasing your program to people who have little to no knowledge about computers. It provides a user-friendly experience.
⬇️ However, GUIs are not as dynamic as CLIs (Command-Line Interfaces) since you have to hardcode all the text and components within the graphical widgets.
📝 (At least in Python), implementing HTML and CSS, which I haven't learned yet, can be challenging. So, for GUI development, you would typically use frameworks like Tkinter or libraries like CustomTK.


## CLI ⌨️
⬆️ CLIs, on the other hand, are fast and easy to code, thanks to Python's input function, which allows you to receive user input from the command line.
⬆️ They offer great flexibility and dynamism. You can create functions or classes and link them to conditional statements like if/elif/else, based on the user's input.
⬇️ However, CLIs can be challenging to use if you are not familiar with the codebase or the application's specific commands and options.
⬇️ Unlike GUIs, CLIs lack graphical elements like buttons or visual interfaces. Instead, they rely solely on command-line interactions.

## Conclusion 📝
When deciding between a CLI and a GUI wrapper, consider the nature of your application, the target audience, and the specific requirements. CLIs are well-suited for command-driven tasks, automation, and experienced users comfortable with the command line. On the other hand, GUIs provide a more intuitive and visually appealing experience, making them preferable when targeting non-technical or less experienced users. Ultimately, the choice depends on balancing functionality, user experience, and the goals of your project.
Введение в С++.
Tags: beginners, cpp, programming, tutorial
Published: 2023-05-09 17:46:23

Ассаламу алейкум, уважаемый программист, сегодня мы с вами начнем язык программирования C++! Вы можете написать программный код для Android и Arduino для ПК. Язык программирования C++ очень простой и понятный язык программирования.

Зачем использовать С++?

1.Язык программирования C++ является наиболее широко используемым языком программирования в мире.
2.C++ можно найти во всех операционных системах с графическим интерфейсом.
3.C++ считается объектно-ориентированным языком программирования. Встроенную программу можно легко изменить.
4.C++ — забавный и очень простой в освоении.
5.C++. Вы можете создавать программы, которые переносимы и адаптируются к различным платформам.
6.C++ очень легко переключается, потому что это язык программирования, близкий к C# и языку программирования Java.

Язык программирования C++ принадлежит к семейству программирования C, основанному в 1985 году Бьерном Страуструпом.

Написанное на языке программирования C++, мы видим любимое слово программистов, пишущих **«Hello World»**.

**Что такое С++?**

- C++ — это язык программирования, который можно использовать для создания высокопроизводительных программ.

- C++ был разработан Бьерном Страуструпом как расширение языка C.
- C++ — Управление памятью для программиста. Дает вам возможность использовать его эффективно.

```
#include <iostream>

using namespace std;

int main()
{

  cout << "Hello World";

   return 0;
}
```
Enhancing Your Web Application with the <search> Element
Tags: webdev, html
Published: 2023-05-09 17:32:25

Hey there, web enthusiasts! It's me, Russell, your shipboard developer.

Before we dive into the fun stuff, a quick heads-up: the search element we're discussing here might not be fully supported by all browsers yet. So, keep that in mind when tinkering with your projects.

Now, let's get to the exciting part—unveiling the search element in HTML!

The search element is designed to group and semantically identify parts of a document or application related to search or filtering functionality.

This can include form controls, quick search results, or other content that assists users in searching or filtering. 

## The Point of `<search>`

The search element is not specifically for performing search operations but for organizing search-related content.

Let's explore some examples of how the search element is used to group search-related content:

## Example 1: Grouping Search Form in the Header

In this example, a search form is grouped in the header of a web page, making it clear that the content inside is related to searching for articles:

```
<header>
  <h1><a href="/">My fancy blog</a></h1>
  ...
  <search>
    <form action="search.php">
      <label for="query">Find an article</label>
      <input id="query" name="q" type="search">
      <button type="submit">Go!</button>
    </form>
  </search>
</header>
```

## Example 2: Grouping a JavaScript-Powered Search

In this example, JavaScript is used to power the search, and the search element groups the content, providing a clear indication of its purpose:


```
<search>
  <label>
    Find and filter your query
    <input type="search" id="query">
  </label>
  <label>
    <input type="checkbox" id="exact-only">
    Exact matches only
  </label>

  <section>
    <h3>Results found:</h3>
    <ul id="results">
      <li>
        <p><a href="services/consulting">Consulting services</a></p>
        <p>
          Find out how we can help you improve your business with our integrated consultants, Bob and Bob.
        </p>
      </li>
      ...
    </ul>
    <output id="no-results"></output>
  </section>
</search>
```

## Example 3: Grouping Multiple Search Features on a Page

In this example, two search features are grouped within their respective search elements on one page—one for a global site search and another for filtering content on the current page:

```
<body>
  <header>
    ...
    <search title="Website">
      ...
    </search>
  </header>
  <main>
    <h1>Hotels near your location</h1>
     <search>
       <h2>Filter results</h2>
       ...
     </search>
     <article>
      <!-- search result content -->
    </article>
  </main>
</body>
```

## Wrap-up

The search element in HTML is an excellent way to **group** and **semantically identify search and filtering-related content** within your web application.

By understanding the purpose of the element, you can create a more organized and user-friendly experience.

Happy coding!
Understanding Process Architecture in PostgreSQL
Tags: postgres
Published: 2023-05-09 17:20:43

PostgreSQL is a relational database management system that uses a client/server type architecture with a multi-process approach running on a single host. The PostgreSQL server is a collection of multiple processes that cooperatively manage one database cluster.

## Postgres Server Process

A postgres server process, also known as postmaster in earlier versions, is the parent process of all other processes in a PostgreSQL server. It starts up by executing the pg_ctl utility with a start option and allocates a shared memory area in memory, starts various background processes, starts replication associated processes and background worker processes if necessary, and waits for connection requests from clients. Whenever a connection request is received from a client, it starts a backend process.

## Backend Processes

A backend process, also called postgres, is started by the postgres server process and handles all queries issued by a connected client. It communicates with the client through a single TCP connection and terminates when the client gets disconnected. PostgreSQL allows multiple clients to connect simultaneously with the configuration parameter max_connections controlling the maximum number of clients.

## Background Processes

Various background processes perform processes of each feature (e.g., VACUUM and CHECKPOINT processes) for database management. Replication-associated processes perform streaming replication, and background worker processes can perform any processing implemented by users. It is impossible to explain each function simply as they depend on individual specific features and PostgreSQL internals.

**_Note:_** The PostgreSQL server listens to one network port, with the default port being 5432.

## Helpful Sources:

https://github.com/apache/age
https://www.interdb.jp/pg/pgsql02.html
Methods of Writing and Reading Tuples
Tags: postgres
Published: 2023-05-09 17:16:50

## Introduction to Heap Table File Layout

PostgreSQL stores data in heap tables, which are divided into pages of fixed length. The pages are numbered sequentially, and each page contains heap tuples, line pointers, and header data. The header data contains information about the page, such as the LSN of XLOG record, checksum value, pd_lower, pd_upper, and pd_special. A tuple identifier (TID) is used to identify a tuple within the table.

## Writing Heap Tuples

When a new tuple is added to a page, a new line pointer is also added to the line pointer array. The line pointer points to the new tuple, and the pd_upper points to the new tuple as well. The pd_lower is updated to point to the end of the line pointer array. This process is repeated for each new tuple that is added to the page.

## Reading Heap Tuples

There are two typical access methods for reading heap tuples: sequential scan and B-tree index scan. In a sequential scan, all tuples in all pages are read by scanning all line pointers in each page. In a B-tree index scan, an index file is used to find the TID of the desired heap tuple. The TID is then used to read the desired heap tuple without unnecessary scanning in the pages.

## Helpful Sources:
https://github.com/apache/age
https://www.interdb.jp/pg/pgsql01.html
Understanding the Internal Layout of a Heap Table File
Tags: postgres
Published: 2023-05-09 17:12:25

## Overview of Pages

A heap table file, as well as index files, are divided into pages or blocks of fixed length, usually 8192 bytes (8 KB). Pages within a file are numbered sequentially from 0, and the numbers are called block numbers. PostgreSQL adds an empty page to the end of a file if it has been filled up to increase the file size.

## Contents of a Page

A page within a table contains three types of data: heap tuples, line pointers, and header data. Heap tuples are the actual data records and are stacked in order from the bottom of the page. Line pointers are 4-byte-long pointers to each heap tuple and form a simple array, which serves as an index to the tuples. Header data, defined by the structure PageHeaderData, contains general information about the page, such as the LSN of XLOG record written by the last change of the page and the checksum value of the page.

## Tuple Identifier

To identify a tuple within a table, a tuple identifier (TID) is internally used. A TID consists of a pair of values: the block number of the page that contains the tuple and the offset number of the line pointer that points to the tuple. The usage of TID is illustrated with an example of an index.

Helpful Sources:
https://github.com/apache/age
https://www.interdb.jp/pg/pgsql01.html
Pure CSS Pencil Preloader
Tags: css, codepen, animation, webdev
Published: 2023-05-09 16:50:00

Pure CSS Pencil Preloader

---

Jon Kantner does impressive demos with interactive components and micro-interactions. This loader is no exception. Simple but full of details (that wiggle of the eraser when deleting the pencil trace is super funny). 

---

{% codepen https://codepen.io/jkantner/pen/xxJmMVa %}

---
---


Thanks for Reading ❤️! Check my website [Demo coding](https://democoding.in/) for updates about my latest CSS Animation, CSS Tools, and some cool web dev tips. Let's be friends!

Don't forget to subscribe our channel : [Demo code](https://www.youtube.com/@democode)

---

{% twitter 1655834579394252800 %}