The Ultimate Search Extension for Rust

Rust Search Extension

The ultimate search extension for Rust 

Search docs, crates, builtin attributes, official books, and error codes, etc in your address bar instantly.

Features

• Search Primitive Types and Modules
• Search Structs, Traits and Enums
• Search Functions, Methods and Macros
• Search builtin attributes
• Search nightly and rustc docs
• Search crates on https://crates.io or https://lib.rs
• Search any third-party crate's docs
• Search Compiler Error Index with error codes
• Search Rust official book chapters
• Search Cargo Clippy lints
• Search Caniuse.rs and RFC
• Offline mode supported, search local Rust docs (rustup docs --std)
• Builtin commands (:yet, :book, :stable, :label, :tool, :mirror, :update and :history etc)
• Docs.rs enhancements (display Feature flags, show table of content)
• Github rust-lang release page enhancements (show table of content)
• docs.rust-lang.org enhancements (link all "since" and "issue" label)
• Support import/export your local data

How to use it

Input keyword rs in the address bar, press Space to activate the search bar. Then enter any word you want to search, the extension will response the related search results instantly.

Contribution

jsonnet is required before getting started. To install jsonnet, please check jsonnet's README. For Linux users, the snap is a good choice to install jsonnet.

$ git clone --recursive https://github.com/huhu/rust-search-extension
Cloning into 'rust-search-extension'...
$ cd rust-search-extension

$ make chrome # For Chrome version

$ make firefox # For Firefox version

$ make edge # For Edge version

Learn More

https://rust.extension.sh/

Installation

• Chrome Web Store
• Firefox
• Microsoft Edge

Download details:

Author: huhu
Source code: https://github.com/huhu/rust-search-extension
License: Apache-2.0, MIT licenses found

#rust #rustlang

What is GEEK

Buddha Community

Serde Rust: Serialization Framework for Rust

Serde

*Serde is a framework for serializing and deserializing Rust data structures efficiently and generically.*

You may be looking for:

• An overview of Serde
• Data formats supported by Serde
• Setting up #[derive(Serialize, Deserialize)]
• Examples
• API documentation
• Release notes

Serde in action

Click to show Cargo.toml. Run this code in the playground.

[dependencies]

# The core APIs, including the Serialize and Deserialize traits. Always
# required when using Serde. The "derive" feature is only required when
# using #[derive(Serialize, Deserialize)] to make Serde work with structs
# and enums defined in your crate.
serde = { version = "1.0", features = ["derive"] }

# Each data format lives in its own crate; the sample code below uses JSON
# but you may be using a different one.
serde_json = "1.0"

 

use serde::{Serialize, Deserialize};

#[derive(Serialize, Deserialize, Debug)]
struct Point {
    x: i32,
    y: i32,
}

fn main() {
    let point = Point { x: 1, y: 2 };

    // Convert the Point to a JSON string.
    let serialized = serde_json::to_string(&point).unwrap();

    // Prints serialized = {"x":1,"y":2}
    println!("serialized = {}", serialized);

    // Convert the JSON string back to a Point.
    let deserialized: Point = serde_json::from_str(&serialized).unwrap();

    // Prints deserialized = Point { x: 1, y: 2 }
    println!("deserialized = {:?}", deserialized);
}

Getting help

Serde is one of the most widely used Rust libraries so any place that Rustaceans congregate will be able to help you out. For chat, consider trying the #rust-questions or #rust-beginners channels of the unofficial community Discord (invite: https://discord.gg/rust-lang-community), the #rust-usage or #beginners channels of the official Rust Project Discord (invite: https://discord.gg/rust-lang), or the #general stream in Zulip. For asynchronous, consider the [rust] tag on StackOverflow, the /r/rust subreddit which has a pinned weekly easy questions post, or the Rust Discourse forum. It's acceptable to file a support issue in this repo but they tend not to get as many eyes as any of the above and may get closed without a response after some time.

Download Details:
Author: serde-rs
Source Code: https://github.com/serde-rs/serde
License: View license

#rust  #rustlang 

Crie filtros de pesquisa e de produto usando HTML, CSS e Javascript

Bem-vindo ao tutorial de hoje. No tutorial de hoje, aprenderemos como construir filtros e pesquisar produtos. Para criar este projeto, precisamos de HTML, CSS e Javascript. Como este é um projeto bastante avançado, eu não o recomendaria para um iniciante em javascript. Se você é um intermediário ou especialista em javascript, pode definitivamente ir em frente e fazer este.

Vamos ter uma visão geral do que esse projeto realmente é. O projeto inclui uma série de cartões de produtos. Cada um desses cartões tem um nome, preço e categoria atribuídos a eles. Acima dessas tags, há uma barra de pesquisa onde os usuários podem pesquisar um produto com base em seu nome.

Abaixo da barra de pesquisa, existe um grupo de botões. Cada um desses botões possui um nome de categoria. Quando o usuário clica em qualquer um desses botões, os produtos correspondentes a essa categoria específica serão exibidos.

Estrutura da pasta do projeto:

Agora vamos primeiro criar a estrutura do diretório do projeto para que possamos começar a codificar. Começamos criando uma pasta de projeto chamada - 'Filtros e Pesquisa de Produto'. Dentro desta pasta, criamos três arquivos. O primeiro é index.html, o segundo é style.csse o terceiro é script.js. Esses arquivos são documentos HTML, folhas de estilo e arquivos de script, respectivamente.

HTML:

Começamos com o código HTML. Primeiro, copie o código abaixo e cole em seu arquivo HTML.

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Product Filter And Search</title>
    <!-- Google Font -->
    <link
      href="https://fonts.googleapis.com/css2?family=Poppins:wght@400;500&display=swap"
      rel="stylesheet"
    />
    <!-- Stylesheet -->
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="wrapper">
      <div id="search-container">
        <input
          type="search"
          id="search-input"
          placeholder="Search product name here.."
        />
        <button id="search">Search</button>
      </div>
      <div id="buttons">
        <button class="button-value" onclick="filterProduct('all')">All</button>
        <button class="button-value" onclick="filterProduct('Topwear')">
          Topwear
        </button>
        <button class="button-value" onclick="filterProduct('Bottomwear')">
          Bottomwear
        </button>
        <button class="button-value" onclick="filterProduct('Jacket')">
          Jacket
        </button>
        <button class="button-value" onclick="filterProduct('Watch')">
          Watch
        </button>
      </div>
      <div id="products"></div>
    </div>
    <!-- Script -->
    <script src="script.js"></script>
  </body>
</html>

CSS:

Em seguida, para adicionar estilos a este projeto, usamos CSS. Agora copie o código abaixo e cole-o em seu arquivo CSS.

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  border: none;
  outline: none;
  font-family: "Poppins", sans-serif;
}
body {
  background-color: #f5f8ff;
}
.wrapper {
  width: 95%;
  margin: 0 auto;
}
#search-container {
  margin: 1em 0;
}
#search-container input {
  background-color: transparent;
  width: 40%;
  border-bottom: 2px solid #110f29;
  padding: 1em 0.3em;
}
#search-container input:focus {
  border-bottom-color: #6759ff;
}
#search-container button {
  padding: 1em 2em;
  margin-left: 1em;
  background-color: #6759ff;
  color: #ffffff;
  border-radius: 5px;
  margin-top: 0.5em;
}
.button-value {
  border: 2px solid #6759ff;
  padding: 1em 2.2em;
  border-radius: 3em;
  background-color: transparent;
  color: #6759ff;
  cursor: pointer;
}
.active {
  background-color: #6759ff;
  color: #ffffff;
}
#products {
  display: grid;
  grid-template-columns: auto auto auto;
  grid-column-gap: 1.5em;
  padding: 2em 0;
}
.card {
  background-color: #ffffff;
  max-width: 18em;
  margin-top: 1em;
  padding: 1em;
  border-radius: 5px;
  box-shadow: 1em 2em 2.5em rgba(1, 2, 68, 0.08);
}
.image-container {
  text-align: center;
}
img {
  max-width: 100%;
  object-fit: contain;
  height: 15em;
}
.container {
  padding-top: 1em;
  color: #110f29;
}
.container h5 {
  font-weight: 500;
}
.hide {
  display: none;
}
@media screen and (max-width: 720px) {
  img {
    max-width: 100%;
    object-fit: contain;
    height: 10em;
  }
  .card {
    max-width: 10em;
    margin-top: 1em;
  }
  #products {
    grid-template-columns: auto auto;
    grid-column-gap: 1em;
  }
}

Javascript:

Finalmente, precisamos adicionar funcionalidade ao filtro e também implementar a função de pesquisa. Para fazer funcionar, adicionamos javascript. Copie o código abaixo e cole em seu arquivo javascript.

let products = {
  data: [
    {
      productName: "Regular White T-Shirt",
      category: "Topwear",
      price: "30",
      image: "white-tshirt.jpg",
    },
    {
      productName: "Beige Short Skirt",
      category: "Bottomwear",
      price: "49",
      image: "short-skirt.jpg",
    },
    {
      productName: "Sporty SmartWatch",
      category: "Watch",
      price: "99",
      image: "sporty-smartwatch.jpg",
    },
    {
      productName: "Basic Knitted Top",
      category: "Topwear",
      price: "29",
      image: "knitted-top.jpg",
    },
    {
      productName: "Black Leather Jacket",
      category: "Jacket",
      price: "129",
      image: "black-leather-jacket.jpg",
    },
    {
      productName: "Stylish Pink Trousers",
      category: "Bottomwear",
      price: "89",
      image: "pink-trousers.jpg",
    },
    {
      productName: "Brown Men's Jacket",
      category: "Jacket",
      price: "189",
      image: "brown-jacket.jpg",
    },
    {
      productName: "Comfy Gray Pants",
      category: "Bottomwear",
      price: "49",
      image: "comfy-gray-pants.jpg",
    },
  ],
};

for (let i of products.data) {
  //Create Card
  let card = document.createElement("div");
  //Card should have category and should stay hidden initially
  card.classList.add("card", i.category, "hide");
  //image div
  let imgContainer = document.createElement("div");
  imgContainer.classList.add("image-container");
  //img tag
  let image = document.createElement("img");
  image.setAttribute("src", i.image);
  imgContainer.appendChild(image);
  card.appendChild(imgContainer);
  //container
  let container = document.createElement("div");
  container.classList.add("container");
  //product name
  let name = document.createElement("h5");
  name.classList.add("product-name");
  name.innerText = i.productName.toUpperCase();
  container.appendChild(name);
  //price
  let price = document.createElement("h6");
  price.innerText = "$" + i.price;
  container.appendChild(price);

  card.appendChild(container);
  document.getElementById("products").appendChild(card);
}

//parameter passed from button (Parameter same as category)
function filterProduct(value) {
  //Button class code
  let buttons = document.querySelectorAll(".button-value");
  buttons.forEach((button) => {
    //check if value equals innerText
    if (value.toUpperCase() == button.innerText.toUpperCase()) {
      button.classList.add("active");
    } else {
      button.classList.remove("active");
    }
  });

  //select all cards
  let elements = document.querySelectorAll(".card");
  //loop through all cards
  elements.forEach((element) => {
    //display all cards on 'all' button click
    if (value == "all") {
      element.classList.remove("hide");
    } else {
      //Check if element contains category class
      if (element.classList.contains(value)) {
        //display element based on category
        element.classList.remove("hide");
      } else {
        //hide other elements
        element.classList.add("hide");
      }
    }
  });
}

//Search button click
document.getElementById("search").addEventListener("click", () => {
  //initializations
  let searchInput = document.getElementById("search-input").value;
  let elements = document.querySelectorAll(".product-name");
  let cards = document.querySelectorAll(".card");

  //loop through all elements
  elements.forEach((element, index) => {
    //check if text includes the search value
    if (element.innerText.includes(searchInput.toUpperCase())) {
      //display matching card
      cards[index].classList.remove("hide");
    } else {
      //hide others
      cards[index].classList.add("hide");
    }
  });
});

//Initially display all products
window.onload = () => {
  filterProduct("all");
};

Sua pesquisa e filtro de produto agora estão prontos. Espero que tenha gostado do tutorial.

Cree filtros de búsqueda y de productos utilizando Javascript

Bienvenido al tutorial de hoy. En el tutorial de hoy, aprenderemos cómo crear filtros y buscar productos. Para crear este proyecto, necesitamos HTML, CSS y Javascript. Dado que este es un proyecto bastante avanzado, no se lo recomendaría a un principiante de JavaScript. Si eres un intermedio o un experto en javascript, definitivamente puedes seguir adelante y hacer este.

Tengamos una visión general de lo que realmente es este proyecto. El proyecto incluye una serie de fichas de producto. Cada una de estas tarjetas tiene asignado un nombre, precio y categoría. Por encima de estas etiquetas, hay una barra de búsqueda donde los usuarios pueden buscar un producto según su nombre.

Debajo de la barra de búsqueda, hay un grupo de botones. Cada uno de estos botones tiene un nombre de categoría. Cuando el usuario haga clic en cualquiera de estos botones, se mostrarán los productos correspondientes a esa categoría en particular.

Estructura de la carpeta del proyecto:

Ahora, primero creemos la estructura del directorio del proyecto para que podamos comenzar a codificar. Comenzamos creando una carpeta de proyecto llamada - 'Filtros y búsqueda de productos'. Dentro de esta carpeta creamos tres archivos. El primero es index.html, el segundo es style.cssy el tercero es script.js. Estos archivos son documentos HTML, hojas de estilo y archivos de script, respectivamente.

HTML:

Empezamos con el código HTML. Primero, copie el código a continuación y péguelo en su archivo HTML.

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Product Filter And Search</title>
    <!-- Google Font -->
    <link
      href="https://fonts.googleapis.com/css2?family=Poppins:wght@400;500&display=swap"
      rel="stylesheet"
    />
    <!-- Stylesheet -->
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="wrapper">
      <div id="search-container">
        <input
          type="search"
          id="search-input"
          placeholder="Search product name here.."
        />
        <button id="search">Search</button>
      </div>
      <div id="buttons">
        <button class="button-value" onclick="filterProduct('all')">All</button>
        <button class="button-value" onclick="filterProduct('Topwear')">
          Topwear
        </button>
        <button class="button-value" onclick="filterProduct('Bottomwear')">
          Bottomwear
        </button>
        <button class="button-value" onclick="filterProduct('Jacket')">
          Jacket
        </button>
        <button class="button-value" onclick="filterProduct('Watch')">
          Watch
        </button>
      </div>
      <div id="products"></div>
    </div>
    <!-- Script -->
    <script src="script.js"></script>
  </body>
</html>

CSS:

A continuación, para agregar estilos a este proyecto, usamos CSS. Ahora copie el código a continuación y péguelo en su archivo CSS.

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  border: none;
  outline: none;
  font-family: "Poppins", sans-serif;
}
body {
  background-color: #f5f8ff;
}
.wrapper {
  width: 95%;
  margin: 0 auto;
}
#search-container {
  margin: 1em 0;
}
#search-container input {
  background-color: transparent;
  width: 40%;
  border-bottom: 2px solid #110f29;
  padding: 1em 0.3em;
}
#search-container input:focus {
  border-bottom-color: #6759ff;
}
#search-container button {
  padding: 1em 2em;
  margin-left: 1em;
  background-color: #6759ff;
  color: #ffffff;
  border-radius: 5px;
  margin-top: 0.5em;
}
.button-value {
  border: 2px solid #6759ff;
  padding: 1em 2.2em;
  border-radius: 3em;
  background-color: transparent;
  color: #6759ff;
  cursor: pointer;
}
.active {
  background-color: #6759ff;
  color: #ffffff;
}
#products {
  display: grid;
  grid-template-columns: auto auto auto;
  grid-column-gap: 1.5em;
  padding: 2em 0;
}
.card {
  background-color: #ffffff;
  max-width: 18em;
  margin-top: 1em;
  padding: 1em;
  border-radius: 5px;
  box-shadow: 1em 2em 2.5em rgba(1, 2, 68, 0.08);
}
.image-container {
  text-align: center;
}
img {
  max-width: 100%;
  object-fit: contain;
  height: 15em;
}
.container {
  padding-top: 1em;
  color: #110f29;
}
.container h5 {
  font-weight: 500;
}
.hide {
  display: none;
}
@media screen and (max-width: 720px) {
  img {
    max-width: 100%;
    object-fit: contain;
    height: 10em;
  }
  .card {
    max-width: 10em;
    margin-top: 1em;
  }
  #products {
    grid-template-columns: auto auto;
    grid-column-gap: 1em;
  }
}

Javascript:

Finalmente, necesitamos agregar funcionalidad al filtro y también implementar la función de búsqueda. Para que funcione, agregamos javascript. Copie el código que se proporciona a continuación y péguelo en su archivo javascript.

let products = {
  data: [
    {
      productName: "Regular White T-Shirt",
      category: "Topwear",
      price: "30",
      image: "white-tshirt.jpg",
    },
    {
      productName: "Beige Short Skirt",
      category: "Bottomwear",
      price: "49",
      image: "short-skirt.jpg",
    },
    {
      productName: "Sporty SmartWatch",
      category: "Watch",
      price: "99",
      image: "sporty-smartwatch.jpg",
    },
    {
      productName: "Basic Knitted Top",
      category: "Topwear",
      price: "29",
      image: "knitted-top.jpg",
    },
    {
      productName: "Black Leather Jacket",
      category: "Jacket",
      price: "129",
      image: "black-leather-jacket.jpg",
    },
    {
      productName: "Stylish Pink Trousers",
      category: "Bottomwear",
      price: "89",
      image: "pink-trousers.jpg",
    },
    {
      productName: "Brown Men's Jacket",
      category: "Jacket",
      price: "189",
      image: "brown-jacket.jpg",
    },
    {
      productName: "Comfy Gray Pants",
      category: "Bottomwear",
      price: "49",
      image: "comfy-gray-pants.jpg",
    },
  ],
};

for (let i of products.data) {
  //Create Card
  let card = document.createElement("div");
  //Card should have category and should stay hidden initially
  card.classList.add("card", i.category, "hide");
  //image div
  let imgContainer = document.createElement("div");
  imgContainer.classList.add("image-container");
  //img tag
  let image = document.createElement("img");
  image.setAttribute("src", i.image);
  imgContainer.appendChild(image);
  card.appendChild(imgContainer);
  //container
  let container = document.createElement("div");
  container.classList.add("container");
  //product name
  let name = document.createElement("h5");
  name.classList.add("product-name");
  name.innerText = i.productName.toUpperCase();
  container.appendChild(name);
  //price
  let price = document.createElement("h6");
  price.innerText = "$" + i.price;
  container.appendChild(price);

  card.appendChild(container);
  document.getElementById("products").appendChild(card);
}

//parameter passed from button (Parameter same as category)
function filterProduct(value) {
  //Button class code
  let buttons = document.querySelectorAll(".button-value");
  buttons.forEach((button) => {
    //check if value equals innerText
    if (value.toUpperCase() == button.innerText.toUpperCase()) {
      button.classList.add("active");
    } else {
      button.classList.remove("active");
    }
  });

  //select all cards
  let elements = document.querySelectorAll(".card");
  //loop through all cards
  elements.forEach((element) => {
    //display all cards on 'all' button click
    if (value == "all") {
      element.classList.remove("hide");
    } else {
      //Check if element contains category class
      if (element.classList.contains(value)) {
        //display element based on category
        element.classList.remove("hide");
      } else {
        //hide other elements
        element.classList.add("hide");
      }
    }
  });
}

//Search button click
document.getElementById("search").addEventListener("click", () => {
  //initializations
  let searchInput = document.getElementById("search-input").value;
  let elements = document.querySelectorAll(".product-name");
  let cards = document.querySelectorAll(".card");

  //loop through all elements
  elements.forEach((element, index) => {
    //check if text includes the search value
    if (element.innerText.includes(searchInput.toUpperCase())) {
      //display matching card
      cards[index].classList.remove("hide");
    } else {
      //hide others
      cards[index].classList.add("hide");
    }
  });
});

//Initially display all products
window.onload = () => {
  filterProduct("all");
};

Su búsqueda y filtro de productos ya están listos. Espero que hayan disfrutado el tutorial.

Créez des filtres de recherche et de produits à l'aide de Javascript

Bienvenue dans le tutoriel d'aujourd'hui. Dans le didacticiel d'aujourd'hui, nous allons apprendre à créer des filtres et à rechercher des produits. Pour créer ce projet, nous avons besoin de HTML, CSS et Javascript. Comme il s'agit d'un projet assez avancé, je ne le recommanderais pas à un débutant en javascript. Si vous êtes un intermédiaire ou un expert en javascript, vous pouvez certainement aller de l'avant et créer celui-ci.

Ayons un aperçu de ce qu'est réellement ce projet. Le projet comprend une série de fiches produits. Chacune de ces cartes a un nom, un prix et une catégorie qui leur sont attribués. Au-dessus de ces balises, il y a une barre de recherche où les utilisateurs peuvent rechercher un produit en fonction de son nom.

Sous la barre de recherche, il y a un groupe de boutons. Chacun de ces boutons a un nom de catégorie. Lorsque l'utilisateur clique sur l'un de ces boutons, les produits correspondant à cette catégorie particulière seront affichés.

Structure du dossier du projet :

Maintenant, créons d'abord la structure du répertoire du projet afin que nous puissions commencer à coder. Nous commençons par créer un dossier de projet nommé - « Filtres et recherche de produits ». Dans ce dossier, nous créons trois fichiers. Le premier est index.html, le second est style.csset le troisième est script.js. Ces fichiers sont respectivement des documents HTML, des feuilles de style et des fichiers de script.

HTML :

Nous commençons par le code HTML. Tout d'abord, copiez le code ci-dessous et collez-le dans votre fichier HTML.

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Product Filter And Search</title>
    <!-- Google Font -->
    <link
      href="https://fonts.googleapis.com/css2?family=Poppins:wght@400;500&display=swap"
      rel="stylesheet"
    />
    <!-- Stylesheet -->
    <link rel="stylesheet" href="style.css" />
  </head>
  <body>
    <div class="wrapper">
      <div id="search-container">
        <input
          type="search"
          id="search-input"
          placeholder="Search product name here.."
        />
        <button id="search">Search</button>
      </div>
      <div id="buttons">
        <button class="button-value" onclick="filterProduct('all')">All</button>
        <button class="button-value" onclick="filterProduct('Topwear')">
          Topwear
        </button>
        <button class="button-value" onclick="filterProduct('Bottomwear')">
          Bottomwear
        </button>
        <button class="button-value" onclick="filterProduct('Jacket')">
          Jacket
        </button>
        <button class="button-value" onclick="filterProduct('Watch')">
          Watch
        </button>
      </div>
      <div id="products"></div>
    </div>
    <!-- Script -->
    <script src="script.js"></script>
  </body>
</html>

CSS :

Ensuite, pour ajouter des styles à ce projet, nous utilisons CSS. Copiez maintenant le code ci-dessous et collez-le dans votre fichier CSS.

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  border: none;
  outline: none;
  font-family: "Poppins", sans-serif;
}
body {
  background-color: #f5f8ff;
}
.wrapper {
  width: 95%;
  margin: 0 auto;
}
#search-container {
  margin: 1em 0;
}
#search-container input {
  background-color: transparent;
  width: 40%;
  border-bottom: 2px solid #110f29;
  padding: 1em 0.3em;
}
#search-container input:focus {
  border-bottom-color: #6759ff;
}
#search-container button {
  padding: 1em 2em;
  margin-left: 1em;
  background-color: #6759ff;
  color: #ffffff;
  border-radius: 5px;
  margin-top: 0.5em;
}
.button-value {
  border: 2px solid #6759ff;
  padding: 1em 2.2em;
  border-radius: 3em;
  background-color: transparent;
  color: #6759ff;
  cursor: pointer;
}
.active {
  background-color: #6759ff;
  color: #ffffff;
}
#products {
  display: grid;
  grid-template-columns: auto auto auto;
  grid-column-gap: 1.5em;
  padding: 2em 0;
}
.card {
  background-color: #ffffff;
  max-width: 18em;
  margin-top: 1em;
  padding: 1em;
  border-radius: 5px;
  box-shadow: 1em 2em 2.5em rgba(1, 2, 68, 0.08);
}
.image-container {
  text-align: center;
}
img {
  max-width: 100%;
  object-fit: contain;
  height: 15em;
}
.container {
  padding-top: 1em;
  color: #110f29;
}
.container h5 {
  font-weight: 500;
}
.hide {
  display: none;
}
@media screen and (max-width: 720px) {
  img {
    max-width: 100%;
    object-fit: contain;
    height: 10em;
  }
  .card {
    max-width: 10em;
    margin-top: 1em;
  }
  #products {
    grid-template-columns: auto auto;
    grid-column-gap: 1em;
  }
}

Javascript :

Enfin, nous devons ajouter des fonctionnalités au filtre et également implémenter la fonction de recherche. Pour que cela fonctionne, nous ajoutons javascript. Copiez le code ci-dessous et collez-le dans votre fichier javascript.

let products = {
  data: [
    {
      productName: "Regular White T-Shirt",
      category: "Topwear",
      price: "30",
      image: "white-tshirt.jpg",
    },
    {
      productName: "Beige Short Skirt",
      category: "Bottomwear",
      price: "49",
      image: "short-skirt.jpg",
    },
    {
      productName: "Sporty SmartWatch",
      category: "Watch",
      price: "99",
      image: "sporty-smartwatch.jpg",
    },
    {
      productName: "Basic Knitted Top",
      category: "Topwear",
      price: "29",
      image: "knitted-top.jpg",
    },
    {
      productName: "Black Leather Jacket",
      category: "Jacket",
      price: "129",
      image: "black-leather-jacket.jpg",
    },
    {
      productName: "Stylish Pink Trousers",
      category: "Bottomwear",
      price: "89",
      image: "pink-trousers.jpg",
    },
    {
      productName: "Brown Men's Jacket",
      category: "Jacket",
      price: "189",
      image: "brown-jacket.jpg",
    },
    {
      productName: "Comfy Gray Pants",
      category: "Bottomwear",
      price: "49",
      image: "comfy-gray-pants.jpg",
    },
  ],
};

for (let i of products.data) {
  //Create Card
  let card = document.createElement("div");
  //Card should have category and should stay hidden initially
  card.classList.add("card", i.category, "hide");
  //image div
  let imgContainer = document.createElement("div");
  imgContainer.classList.add("image-container");
  //img tag
  let image = document.createElement("img");
  image.setAttribute("src", i.image);
  imgContainer.appendChild(image);
  card.appendChild(imgContainer);
  //container
  let container = document.createElement("div");
  container.classList.add("container");
  //product name
  let name = document.createElement("h5");
  name.classList.add("product-name");
  name.innerText = i.productName.toUpperCase();
  container.appendChild(name);
  //price
  let price = document.createElement("h6");
  price.innerText = "$" + i.price;
  container.appendChild(price);

  card.appendChild(container);
  document.getElementById("products").appendChild(card);
}

//parameter passed from button (Parameter same as category)
function filterProduct(value) {
  //Button class code
  let buttons = document.querySelectorAll(".button-value");
  buttons.forEach((button) => {
    //check if value equals innerText
    if (value.toUpperCase() == button.innerText.toUpperCase()) {
      button.classList.add("active");
    } else {
      button.classList.remove("active");
    }
  });

  //select all cards
  let elements = document.querySelectorAll(".card");
  //loop through all cards
  elements.forEach((element) => {
    //display all cards on 'all' button click
    if (value == "all") {
      element.classList.remove("hide");
    } else {
      //Check if element contains category class
      if (element.classList.contains(value)) {
        //display element based on category
        element.classList.remove("hide");
      } else {
        //hide other elements
        element.classList.add("hide");
      }
    }
  });
}

//Search button click
document.getElementById("search").addEventListener("click", () => {
  //initializations
  let searchInput = document.getElementById("search-input").value;
  let elements = document.querySelectorAll(".product-name");
  let cards = document.querySelectorAll(".card");

  //loop through all elements
  elements.forEach((element, index) => {
    //check if text includes the search value
    if (element.innerText.includes(searchInput.toUpperCase())) {
      //display matching card
      cards[index].classList.remove("hide");
    } else {
      //hide others
      cards[index].classList.add("hide");
    }
  });
});

//Initially display all products
window.onload = () => {
  filterProduct("all");
};

Votre recherche de produits et votre filtre sont maintenant prêts. J'espère que vous avez apprécié le tutoriel.

Serde JSON: JSON Support for Serde Framework

Serde JSON

Serde is a framework for serializing and deserializing Rust data structures efficiently and generically.

[dependencies]
serde_json = "1.0"

You may be looking for:

• JSON API documentation
• Serde API documentation
• Detailed documentation about Serde
• Setting up #[derive(Serialize, Deserialize)]
• Release notes

JSON is a ubiquitous open-standard format that uses human-readable text to transmit data objects consisting of key-value pairs.

{
    "name": "John Doe",
    "age": 43,
    "address": {
        "street": "10 Downing Street",
        "city": "London"
    },
    "phones": [
        "+44 1234567",
        "+44 2345678"
    ]
}

There are three common ways that you might find yourself needing to work with JSON data in Rust.

• As text data. An unprocessed string of JSON data that you receive on an HTTP endpoint, read from a file, or prepare to send to a remote server.
• As an untyped or loosely typed representation. Maybe you want to check that some JSON data is valid before passing it on, but without knowing the structure of what it contains. Or you want to do very basic manipulations like insert a key in a particular spot.
• As a strongly typed Rust data structure. When you expect all or most of your data to conform to a particular structure and want to get real work done without JSON's loosey-goosey nature tripping you up.

Serde JSON provides efficient, flexible, safe ways of converting data between each of these representations.

Operating on untyped JSON values

Any valid JSON data can be manipulated in the following recursive enum representation. This data structure is serde_json::Value.

enum Value {
    Null,
    Bool(bool),
    Number(Number),
    String(String),
    Array(Vec<Value>),
    Object(Map<String, Value>),
}

A string of JSON data can be parsed into a serde_json::Value by the serde_json::from_str function. There is also from_slice for parsing from a byte slice &[u8] and from_reader for parsing from any io::Read like a File or a TCP stream.

use serde_json::{Result, Value};

fn untyped_example() -> Result<()> {
    // Some JSON input data as a &str. Maybe this comes from the user.
    let data = r#"
        {
            "name": "John Doe",
            "age": 43,
            "phones": [
                "+44 1234567",
                "+44 2345678"
            ]
        }"#;

    // Parse the string of data into serde_json::Value.
    let v: Value = serde_json::from_str(data)?;

    // Access parts of the data by indexing with square brackets.
    println!("Please call {} at the number {}", v["name"], v["phones"][0]);

    Ok(())
}

The result of square bracket indexing like v["name"] is a borrow of the data at that index, so the type is &Value. A JSON map can be indexed with string keys, while a JSON array can be indexed with integer keys. If the type of the data is not right for the type with which it is being indexed, or if a map does not contain the key being indexed, or if the index into a vector is out of bounds, the returned element is Value::Null.

When a Value is printed, it is printed as a JSON string. So in the code above, the output looks like Please call "John Doe" at the number "+44 1234567". The quotation marks appear because v["name"] is a &Value containing a JSON string and its JSON representation is "John Doe". Printing as a plain string without quotation marks involves converting from a JSON string to a Rust string with as_str() or avoiding the use of Value as described in the following section.

The Value representation is sufficient for very basic tasks but can be tedious to work with for anything more significant. Error handling is verbose to implement correctly, for example imagine trying to detect the presence of unrecognized fields in the input data. The compiler is powerless to help you when you make a mistake, for example imagine typoing v["name"] as v["nmae"] in one of the dozens of places it is used in your code.

Parsing JSON as strongly typed data structures

Serde provides a powerful way of mapping JSON data into Rust data structures largely automatically.

use serde::{Deserialize, Serialize};
use serde_json::Result;

#[derive(Serialize, Deserialize)]
struct Person {
    name: String,
    age: u8,
    phones: Vec<String>,
}

fn typed_example() -> Result<()> {
    // Some JSON input data as a &str. Maybe this comes from the user.
    let data = r#"
        {
            "name": "John Doe",
            "age": 43,
            "phones": [
                "+44 1234567",
                "+44 2345678"
            ]
        }"#;

    // Parse the string of data into a Person object. This is exactly the
    // same function as the one that produced serde_json::Value above, but
    // now we are asking it for a Person as output.
    let p: Person = serde_json::from_str(data)?;

    // Do things just like with any other Rust data structure.
    println!("Please call {} at the number {}", p.name, p.phones[0]);

    Ok(())
}

This is the same serde_json::from_str function as before, but this time we assign the return value to a variable of type Person so Serde will automatically interpret the input data as a Person and produce informative error messages if the layout does not conform to what a Person is expected to look like.

Any type that implements Serde's Deserialize trait can be deserialized this way. This includes built-in Rust standard library types like Vec<T> and HashMap<K, V>, as well as any structs or enums annotated with #[derive(Deserialize)].

Once we have p of type Person, our IDE and the Rust compiler can help us use it correctly like they do for any other Rust code. The IDE can autocomplete field names to prevent typos, which was impossible in the serde_json::Value representation. And the Rust compiler can check that when we write p.phones[0], then p.phones is guaranteed to be a Vec<String> so indexing into it makes sense and produces a String.

The necessary setup for using Serde's derive macros is explained on the Using derive page of the Serde site.

Constructing JSON values

Serde JSON provides a json! macro to build serde_json::Value objects with very natural JSON syntax.

use serde_json::json;

fn main() {
    // The type of `john` is `serde_json::Value`
    let john = json!({
        "name": "John Doe",
        "age": 43,
        "phones": [
            "+44 1234567",
            "+44 2345678"
        ]
    });

    println!("first phone number: {}", john["phones"][0]);

    // Convert to a string of JSON and print it out
    println!("{}", john.to_string());
}

The Value::to_string() function converts a serde_json::Value into a String of JSON text.

One neat thing about the json! macro is that variables and expressions can be interpolated directly into the JSON value as you are building it. Serde will check at compile time that the value you are interpolating is able to be represented as JSON.

let full_name = "John Doe";
let age_last_year = 42;

// The type of `john` is `serde_json::Value`
let john = json!({
    "name": full_name,
    "age": age_last_year + 1,
    "phones": [
        format!("+44 {}", random_phone())
    ]
});

This is amazingly convenient, but we have the problem we had before with Value: the IDE and Rust compiler cannot help us if we get it wrong. Serde JSON provides a better way of serializing strongly-typed data structures into JSON text.

Creating JSON by serializing data structures

A data structure can be converted to a JSON string by serde_json::to_string. There is also serde_json::to_vec which serializes to a Vec<u8> and serde_json::to_writer which serializes to any io::Write such as a File or a TCP stream.

use serde::{Deserialize, Serialize};
use serde_json::Result;

#[derive(Serialize, Deserialize)]
struct Address {
    street: String,
    city: String,
}

fn print_an_address() -> Result<()> {
    // Some data structure.
    let address = Address {
        street: "10 Downing Street".to_owned(),
        city: "London".to_owned(),
    };

    // Serialize it to a JSON string.
    let j = serde_json::to_string(&address)?;

    // Print, write to a file, or send to an HTTP server.
    println!("{}", j);

    Ok(())
}

Any type that implements Serde's Serialize trait can be serialized this way. This includes built-in Rust standard library types like Vec<T> and HashMap<K, V>, as well as any structs or enums annotated with #[derive(Serialize)].

Performance

It is fast. You should expect in the ballpark of 500 to 1000 megabytes per second deserialization and 600 to 900 megabytes per second serialization, depending on the characteristics of your data. This is competitive with the fastest C and C++ JSON libraries or even 30% faster for many use cases. Benchmarks live in the serde-rs/json-benchmark repo.

Getting help

Serde is one of the most widely used Rust libraries, so any place that Rustaceans congregate will be able to help you out. For chat, consider trying the #rust-questions or #rust-beginners channels of the unofficial community Discord (invite: https://discord.gg/rust-lang-community), the #rust-usage or #beginners channels of the official Rust Project Discord (invite: https://discord.gg/rust-lang), or the #general stream in Zulip. For asynchronous, consider the [rust] tag on StackOverflow, the /r/rust subreddit which has a pinned weekly easy questions post, or the Rust Discourse forum. It's acceptable to file a support issue in this repo, but they tend not to get as many eyes as any of the above and may get closed without a response after some time.

No-std support

As long as there is a memory allocator, it is possible to use serde_json without the rest of the Rust standard library. This is supported on Rust 1.36+. Disable the default "std" feature and enable the "alloc" feature:

[dependencies]
serde_json = { version = "1.0", default-features = false, features = ["alloc"] }

For JSON support in Serde without a memory allocator, please see the serde-json-core crate.

Link: https://crates.io/crates/serde_json

#rust  #rustlang  #encode   #json