teleren/devto huggingface dataset:
Using Hooks in React Native
Tags: reactnative, javascript, beginners, programming
Published: 2024-03-22 00:29:01

## Introduction

React Native is a popular framework for building mobile applications using JavaScript and React. One of the key features that sets React Native apart from other frameworks is the use of Hooks. Introduced in React version 16.8, Hooks provide a way to use state and other React features without writing a class. In this article, we will explore the advantages and disadvantages of using Hooks in React Native.

## Advantages of Using Hooks

1. **Simplified Code:** Hooks allow for a more streamlined and cleaner code compared to using class components. This is because they eliminate the need for writing boilerplate code such as constructor, componentDidMount, and componentDidUpdate.

2. **Function Components:** Hooks enable the use of function components in React Native, making it easier to update and manage state changes.

3. **Reusability:** Hooks promote reusable code as they can be extracted and used in other components without the need for prop drilling.

## Disadvantages of Using Hooks

1. **Learning Curve:** Switching from class components to using Hooks may have a learning curve for developers who are used to the traditional way of writing React code.

2. **Compatibility:** Hooks are only compatible with React version 16.8 or higher, making it difficult for projects using older versions to incorporate them.

## Features of Hooks in React Native

1. **useState():** This Hook allows for the use of state in functional components.

   ```javascript
   const [count, setCount] = useState(0);
   ```
2. **useEffect():** It is used to perform side effects in functional components, such as fetching data from an API or subscribing and unsubscribing from events.

   ```javascript
useEffect(() => {
  const fetchData = async () => {
    const result = await axios('http://example.com/api/data');
    setData(result.data);
  };

  fetchData();
}, []); // The empty array indicates this effect runs once after the initial render
```

## Conclusion

In conclusion, the use of Hooks in React Native offers several advantages such as simplified code, enhanced reusability, and the ability to use state and other React features in function components. However, it also comes with its own set of disadvantages, including a learning curve and compatibility issues. As with any framework or technology, it is important for developers to carefully weigh the pros and cons before implementing Hooks in their projects. Overall, Hooks provide a valuable tool for creating dynamic and efficient applications in React Native.
Quick Tip: Find if array has duplicates
Tags: javascript, arrays
Published: 2024-03-22 00:26:05

Given the array below, which contains duplicates:
`const arr = [1, 2, 5, 2, 6, 1];`

We can perform the following check:
`const hasDuplicates = (new Set(arr)).size !== arr.length;`

The result is `true`, indicating the presence of duplicates in the array.
如何保证TaskGroup中task的顺序
Tags: swift, swiftui, concurrency, ios
Published: 2024-03-22 00:25:24

## 引言

[`TaskGroup`](https://developer.apple.com/documentation/swift/discardingtaskgroup) 是 Swift 5.4 左右新引入的 Swift Concurrency 中的一个概念。在新的 Swift Concurrency 模型中，暂时还没有类似于过去在 Dispatch framework 中的 [`class func concurrentPerform(iterations: Int, execute: (Int) -> Void)`](https://developer.apple.com/documentation/dispatch/dispatchqueue/2016088-concurrentperform) 方法。因此，Swift Concurrency 只能算得上支持 concurrency “并发”的语言特性，而[不能算支持](https://forums.swift.org/t/taskgroup-and-parallelism/51039/5) parallelism “并行”计算的功能。

### Concurrency vs Parallelism

对了，如果你不是大牛的话，我毛遂自荐一下自己拍脑门想出来的用一句话来区分 concurrency 和 parallelism 的“金句”——

> parallelism 是一堆任务在一堆资源上运行，concurrency 是一堆任务同时运行。

举个例子，如果你有一颗单核的奔腾四处理器，但是想要运行一个桌面系统，肯定会有很多任务需要处理器同时解决，才能让你一边听歌、一边上网冲浪。这时候，一个核心调度许多线程的思想，就是 concurrency —— 把运行时切片，干几毫秒这个事情，再干几毫秒那个事情，从而造成一种所有任务都在流畅运作的“假象”。

过了十年，现在你有一颗八核的酷睿i7处理器，想干的事情也多了很多：一边玩儿游戏、一边直播、一边听歌、一边在后台渲染视频……这时候，受到物理规律限制，再牛的单核处理器也没法同时运算这么多任务了，那就只好依靠 parallelism 的思想，通过非常聪明的调度算法，把可以互不相干同时运行的任务，分配到不同的“核”上，从而实现同时执行8件事、16件事（英特尔超线程）等等。

## 如何确定顺序？

用过 [`DispatchGroup`](https://developer.apple.com/documentation/dispatch/dispatchgroup) API 的朋友都知道，可以用 `enter()`/`leave()`方法来告知一个子任务的开始和结束。当所有的enter/leave信号都被group收到时，有`notify`方法来通知任意队列来执行接下来的操作。

然而，子任务完成的顺序是不确定的。大体上任务完成的顺序和开始执行的顺序正相关，但有可能有的处理器核心比较忙，有的不太忙，从而造成有些子任务的完成顺序发生了颠倒。这时，就有各种方法来维持任务的顺序了。

- 对于各自独立的任务而言，最简单直观的方法就是预先分配一个与任务数相等的定长数组，当开启任务时，给每个任务分配一个序列号。结束任务时通过序列号将结果插入到数组的对应位置；

- 对于各自不完全独立的任务而言，在 `Dispatch` 这个库里最常用的是 `DispatchSemaphore` 类，即一个通过计数来约束线程阻塞的信号量。当然，阻塞线程必然会拖慢运行速度，但是为了确保顺序和其他的一致性，这是无法避免的代价。

在新的 Swift Concurrency 中的 `TaskGroup` 类型和 `DispatchGroup` 存在一定相似之处。它有 async 的 `waitForAll()` 方法来实现等待所有子任务完成的功能，但更多时候则是用一个 `for-await-in` 的 async 循环来接受子任务完成后返回的结果。

在这里同样会遇到顺序问题。除了传统的下标数组的办法外，还有一种类似于传统的 `DispatchSerialQueue` 的思路，即：

```swift
for item in collection {
    async let result = await asyncFunction(item)
    results.append(result)
}
```

虽说这样使得各个任务没法“并发”地运行，从而效率大大降低，但还是能保证各个任务的顺序确定。
Exciting News for Developers! GitHub Unveils Code Scanning Autofix in Beta
Published: 2024-03-22 00:16:27


We're thrilled to share a groundbreaking update that's set to revolutionize the way developers tackle security vulnerabilities in their code. GitHub has officially launched the public beta of its new feature, Code Scanning Autofix, powered by GitHub Copilot and CodeQL. This innovative tool is designed to empower developers by providing targeted, AI-powered recommendations to prevent the introduction of new security issues, supporting over 90% of alert types in JavaScript, Typescript, Java, and Python.

###🔍 What sets Code Scanning Autofix apart?

Utilizes a powerful combination of CodeQL, Copilot APIs, and OpenAI GPT-4 to generate smart code suggestions.
Offers code suggestions that remediate more than two-thirds of detected vulnerabilities with minimal adjustments required.
Plans to expand support to more programming languages, including C# and Go, enhancing its versatility.
💡 This feature not only aids developers in resolving vulnerabilities as they code but also simplifies the development process by integrating best practices information with detailed codebase insights. It's a significant step forward in making security an integral part of the development process, rather than an afterthought.

However, as with any automated solution, GitHub emphasizes the importance of developer oversight. It's crucial to carefully review the suggested changes, especially considering the current limitations of the autofix suggestions.

🔗 As we move forward in this era of technological innovation, features like Code Scanning Autofix underscore the importance of integrating advanced security measures seamlessly into our daily workflows. This is a testament to GitHub's commitment to enhancing developer productivity and security.

{% embed https://codewithnazam.com/enhancing-developer-security-github-copilot-introduces-code-scanning-autofix-in-beta/#google_vignette %}

#GitHub #GitHubCopilot #CodeScanningAutofix #DeveloperSecurity #CodeQL #OpenAIGPT4 #TechInnovation #Coding #SoftwareDevelopment #BetaRelease
Quick Tip: Flattening a multidimensional array
Tags: javascript, arrays
Published: 2024-03-22 00:14:13

Array with one level of nesting:
`const arr = [[1, 2, 3], ["foo", "bar"], [4, "baz"]]`

To make it flat:
`const flatten = arr.flat() // [1, 2, 3, "foo", "bar", 4, "baz"]`

Here, we're using the `flat(depth)` method, where `depth` defaults to `1`. Therefore, `flat()` is equivalent to `flat(1)`.
We can flatten arrays with as many levels of nesting as needed. If unsure about the number of levels, we can always use `flat(Infinity)`, which will flatten all nested arrays.
Traduttore Napoletano Italiano Online e Affidabile: Sagge Parole
Published: 2024-03-22 00:12:25


Se sei uno di quelli che apprezzano la ricchezza della lingua napoletana ma talvolta ne hanno bisogno di traduzione in italiano standard, sei nel posto giusto. Sagge Parole ti offre un servizio di traduzione napoletano-italiano online e affidabile, progettato per soddisfare le tue esigenze linguistiche con precisione e affidabilità.

La lingua napoletana è una delle lingue regionali più vibranti e ricche d'Italia, ricca di storia, cultura e sfumature uniche. Tuttavia, comprendere e tradurre correttamente questa lingua può essere una sfida per molti. Ecco dove entra in gioco il nostro **[Traduttore Napoletano Italiano Online e Affidabile](https://saggeparole.com/traduttore-napoletano)**.

La Magia di Sagge Parole

Sagge Parole è molto più di un semplice traduttore online. È un ponte tra il mondo affascinante della lingua napoletana e la necessità di comunicare in italiano standard. Con la nostra piattaforma, puoi tradurre facilmente testi, frasi o persino interi documenti con pochi clic del mouse o tocchi sullo schermo del tuo dispositivo.

Affidabilità al Suo Meglio

La nostra priorità principale è garantire che ogni traduzione sia accurata, coerente e rispettosa delle sfumature linguistiche del napoletano. Grazie alla nostra equipe di esperti linguisti e algoritmi avanzati, puoi fidarti ciecamente della precisione delle traduzioni offerte da Sagge Parole.

Facile da Usare, Ovunque Tu Sia

Con l'interfaccia intuitiva di Sagge Parole, non devi essere un esperto di lingue per utilizzare il nostro servizio. Basta visitare il nostro sito web o scaricare la nostra app e sarai pronto per iniziare a tradurre con facilità, ovunque tu sia, dal tuo computer o dispositivo mobile.

L'Importanza della Precisione

Sappiamo quanto sia importante la precisione quando si tratta di traduzione. Una singola parola fuori posto può cambiare completamente il significato di una frase. È per questo che ci impegniamo a garantire che ogni traduzione fornita da Sagge Parole sia impeccabile, permettendoti di comunicare con chiarezza e precisione.

Prova Sagge Parole Oggi Stesso

Non c'è mai stato un momento migliore per esplorare le meraviglie della lingua napoletana con la sicurezza di una traduzione affidabile. Prova **[Sagge Parole](https://saggeparole.com)** oggi stesso e scopri quanto può essere facile e conveniente tradurre da napoletano a italiano standard. Con Sagge Parole, non solo otterrai traduzioni precise e affidabili, ma potrai anche immergerti completamente nella bellezza e nella ricchezza della lingua napoletana senza alcuna preoccupazione. Non aspettare oltre, visita il nostro sito web e inizia a tradurre con Sagge Parole oggi stesso
Modules Status Update
Tags: puppet, community
Published: 2024-03-25 21:42:28

---
title: Modules Status Update
published: true
date: 2024-03-22 00:00:00 UTC
tags: puppet,community
canonical_url: https://puppetlabs.github.io/content-and-tooling-team/blog/updates/2024-03-22-modules-status-update/
---

## Hello, Again!

We conclude yet another Friday that has passed without much excitement. Once more, it has been a calm period with no noteworthy updates or events occurring in our modules. Our focus throughout the week has primarily been on fixing the pipelines which were broken, fortunatly we were able to bring most of them back in green and continuing working rest to get back them green.

## Community Contributions

We’d like to thank the following people in the Puppet Community for their contributions over this past week:

## New Module Releases

- [`puppetlabs-firewall`](http://github.com/puppetlabs/puppetlabs-firewall) (`8.0.1`)
Aprimorando a Análise Estática com a Onda de Aviso 7 no C# 11
Tags: braziliandevs, tutorial, csharp, dotnet
Published: 2024-03-22 00:00:00

Ao concluirmos nossa série exploratória sobre as inovações do C# 11, dedicamos este último capítulo a um recurso que, embora não adicione novas capacidades sintáticas ou funcionais à linguagem, desempenha um papel crucial em elevar a qualidade e a segurança do código: a Onda de Aviso 7. Esta nova onda de avisos do compilador é uma ferramenta essencial para identificar antecipadamente problemas que poderiam levar a comportamentos indesejados ou erros em tempo de execução.

## A Importância da Onda de Aviso 7

A Onda de Aviso 7 aprofunda o compromisso do C# com a segurança do tipo e a correção do código ao expandir o conjunto de avisos de compilação, focando em áreas críticas como a manipulação de nulos e padrões de codificação seguros. Esses avisos são projetados para alertar os desenvolvedores sobre práticas que, embora não incorretas sintaticamente, podem levar a bugs sutis e difíceis de diagnosticar.

### Exemplo de Acesso a Objeto Nulo

```csharp
#nullable enable
public class Demonstracao
{
    public void ExibirTexto(string? texto)
    {
        Console.WriteLine(texto.Length); // Aviso: referência nula potencial.
    }
}
```

Este aviso ajuda a evitar um dos problemas mais comuns e perigosos em C#: a tentativa de acessar membros de um objeto nulo, fornecendo uma verificação de segurança em tempo de compilação.

### Exemplo de Refinamento de Padrões

```csharp
public void AvaliarObjeto(object obj)
{
    if (obj is string texto && texto.Length > 0) // Aviso: sugestão de melhoria de padrão.
    {
        Console.WriteLine(texto);
    }
}
```

Aqui, a Onda de Aviso 7 pode orientar sobre o uso mais eficiente e seguro de padrões, incentivando a adoção de práticas de codificação que melhoram a clareza e a robustez do código.

### Vantagens da Onda de Aviso 7

- **Antecipação de Problemas**: Identifica potenciais falhas de código antes da execução, reduzindo a incidência de bugs em produção.
- **Promoção de Código Limpo**: Incentiva a adoção de melhores práticas e padrões de codificação, contribuindo para a manutenção e legibilidade do código.
- **Evolução Contínua**: Reflete o esforço contínuo do C# em fornecer ferramentas que auxiliam os desenvolvedores na escrita de código de alta qualidade.

## Conclusão da Série

Com a Onda de Aviso 7, o C# 11 reafirma seu compromisso com a evolução contínua, oferecendo aos desenvolvedores meios para escrever código mais seguro, eficiente e de fácil manutenção. Ao longo desta série, exploramos diversas funcionalidades que ilustram o esforço do C# em se adaptar às necessidades modernas de desenvolvimento, mantendo-se como uma linguagem poderosa, expressiva e versátil.

Esperamos que esta série tenha fornecido insights valiosos e inspirado você a explorar as novidades do C# 11 em seus projetos, aproveitando as melhorias para aprimorar suas práticas de desenvolvimento e a qualidade do seu código. O C# continua a ser uma linguagem em constante evolução, e cada nova versão traz ferramentas e recursos que nos desafiam a sermos melhores desenvolvedores.
DevX Status Update
Tags: puppet, community
Published: 2024-03-25 21:41:45

---
title: DevX Status Update
published: true
date: 2024-03-22 00:00:00 UTC
tags: puppet,community
canonical_url: https://puppetlabs.github.io/content-and-tooling-team/blog/updates/2024-03-22-devx-status-update/
---

## And so, spring begins

I hope you are enjoying as much as us the first Friday of Spring. As the days get longer and the weather gets warmer, we find ourselves fully immersed in various pieces of work. We are also approaching the end of our first quarter over here, so we are sticking closely to our schedules to ensure we complete our current objectives.

## General maintenance and open-source

We are currently focusing our efforts in bringing some quality of life updates to both our tools and the infrastructure surrounding them. Expanded testing, reviewed documentation, bugfixing and more is in the boiling pot. We are also making an effort to catch up with all the pending open-source contributions we have accumulated over time. If you have a PR in any of our repos, rest assured, we will be reviewing it in the coming weeks.

## PDK via Chocolatey

Just giving you all a heads up if you’ve been using choco to download the PDK. We are currently experiencing problems with our PDK Chocolatey release and until the validation process is complete, it will not deliver the latest PDK but rather 3.0.0. Apologies for the hassle here! Fortunately, “winget” does pull down the latest so if you want to get the latest PDK on your windows server try something like this “winget install pdk”.

## Community Contributions

We’d like to thank the following people in the Puppet Community for their contributions over this past week:

- [`puppet_litmus#550`](https://github.com/puppetlabs/puppet_litmus/pull/550): “Minor install\_module improvements”, thanks to [h0tw1r3](https://github.com/h0tw1r3)
Writing and Reading Text Files in Lua
Tags: lua, beginners, programming
Published: 2024-03-21 23:57:41

# Introduction

Let's talk about something practical: handling text files in Lua. It's like having a virtual notebook where you can jot down your thoughts or read back your notes later. In this article, we'll take a friendly stroll through Lua's file handling capabilities, learning how to write and read text files effortlessly.

# Index

- Creating a Text File
- Writing to a Text File
- Reading from a Text File
- Examples
- Conclusion

# Creating a Text File

First things first, let's create a new text file. It's like laying out a fresh sheet of paper before you start writing. Here's how you do it in Lua:

```lua
-- Let's start by creating a new text file named 'numbers.txt'
local file = io.open("numbers.txt", "w")
file:close()
```

# Writing to a Text File

Now that we have our blank canvas, let's fill it with some content. Imagine we're doodling some math-related ideas. We can write them down using Lua's file handling functions:

```lua
-- Opening the file in 'append' mode to add content
local file = io.open("numbers.txt", "a")

-- Let's jot down some numbers
file:write("1 2 3 4 5\n")
file:write("6 7 8 9 10\n")

-- All done! Let's close the file
file:close()
```

# Reading from a Text File

Time to flip through our virtual notebook and see what we've written. We'll use Lua's file handling magic again, but this time to read from the file:

```lua
-- Opening the file in 'read' mode
local file = io.open("numbers.txt", "r")

-- Let's read everything written in our virtual notebook
local content = file:read("*all")

-- Now, let's see what's inside
print("Content of 'numbers.txt':")
print(content)

-- Closing the file after reading
file:close()
```

# Examples

Let's put everything into practice with a complete example:

```lua
-- Creating a new text file named 'numbers.txt'
local file = io.open("numbers.txt", "w")
file:close()

-- Opening the file in 'append' mode to add content
file = io.open("numbers.txt", "a")

-- Writing some numbers to the file
file:write("1 2 3 4 5\n")
file:write("6 7 8 9 10\n")

-- Closing the file
file:close()

-- Opening the file in 'read' mode
file = io.open("numbers.txt", "r")

-- Reading the entire contents of the file
local content = file:read("*all")

-- Displaying the content
print("Content of 'numbers.txt':")
print(content)

-- Closing the file after reading
file:close()
```

Output:
```
Content of 'numbers.txt':
1 2 3 4 5
6 7 8 9 10
```

# Conclusion

Handling text files in Lua is like keeping a digital journal - it's easy, practical, and oh-so-useful. Lua's file handling features allow you to store and retrieve data effortlessly, making your Lua projects more versatile and powerful. So go ahead, write down your thoughts, read back your notes, and let Lua be your faithful companion on your coding journey!
Creating A Combo Box in Raw HTML
Tags: html, tutorial, webdev, vue
Published: 2022-12-02 19:20:04

### Overview & Setup

This article will show how to create an input in HTML that accepts text to search through a list as well as a dropdown of options like a select input. For my example we will create the combo box in Vue, but it can easily be adapted to any other framework or used in raw HTML.  To start you will need to create a new Vue environment in <a href="https://stackblitz.com/" target="None"> Stackblitz </a>. In the `App.vue` file right below the `<img>` tag displaying the Vue Logo, is where we will create the Combo Box.

### Getting Into It

Creating this input is actually quite simple. We will do it using only raw HTML elements. First, within the  `<template>` create an input tag with the appropriate attributes like this:

```html 
<!-- App.js -->

<input
  id="combobox"
  v-model="comboboxValue"
  type="text"
  list="input-list"
  @input="emitValue(comboboxValue)"
  placeholder="Combo Box"
/>
    
```

This creates a text input. For now on the page, it will look and behave just as a normal input element. But you should see that we gave it a list attribute and an input event handler. 

Next we will create the HTML to finish the add the dropdown section of the combo box. This is done by adding the following HTML directly below the input tag that we previously created. 

```html 
<!-- App.js -->

<datalist id="input-list">
  <option v-for="option in options" :key="option">
    {{ option }}
  </option>
</datalist>
    
```

Notice this relies on having an array named 'options', so lets add that array into a `data` function within the `<script>` below where the `components` are declared:

```js 
//App.js

data() {
  return {
    options: ['one', 'two', 'three'],
    comboboxValue: '',
  };
},
    
```

This code also declares `comboboxValue` which is where we will store the selected value from the input. Lastly we need to create the method to handle the `@input` event. Paste the following code below the `data` function:

```js 
//App.js

methods: {
  emitValue(val) {
    console.log({ val });
  },
},
    
```

Now when you look at the window, you should see what still appears to be a normal input below the Vue logo. But now as you type in it, it will filter the list that we gave it and show the applicable options below the input like a select input. Then when you click an option it will put the text of that option into the text input box. You can also see in the console that the contents of teh input are being tracked. 

### Conclusion

That is it! Now you have a combo box that you can have contain any array that you wish it to by simply changing the `options` array. You can handle the change of the input however you would like within the `emitValue` method. The initial value of the input can also be set by simply giving `comboboxValue` an initial value

Hopefully this into has helped you! To see my Stackblitz example, <a href='https://vue-uy41aw.stackblitz.io' target='None'> click here. </a>