jahend

il est possible de récupérer d'autre informations telles que l'index de l'élément :
index : position de l'élément.
odd : indique si l'élément est à une position impaire.
even : indique si l'élément est à une position paire.
first : indique si l'élément est à la première position.
last : indique si l'élément est à la dernière position.

<ul>
    <li *ngFor="let book of bookList; let index = index; let isFirst = first; let isOdd = odd;">
        <span>{{ index }}</span>

jahend

import 'package:flutter/material.dart';

import './product_manager.dart';
// This method return anything
// void main() {
//   runApp(MyApp());
// }

// Sugar syntax only with one statement
void main() => (runApp(MyApp()));

jahend

import 'package:flutter/material.dart';

class AppTheme {

  static const TextStyle title_h1  = TextStyle(
    fontFamily: "WorkSans",
    color: Colors.black,
    fontSize: 38,
    fontWeight: FontWeight.w600,
    letterSpacing: 1.2

jahend

user = { "name": "Ed", "email": "john@yahoo.com",
         "age": 20, "purchases": [1, 2, 3, 4]}

user["name"] = "anna

print(user)

for key in user:
  	print(key)
    

jahend

docker pull [imageName] # Pull an image from a registry
docker run [imageName] # Run containers
docker run -d [imageName] # Detached mode
docker start [containerName] # Start stopped containers
docker ps # List running containers
docker ps -a # List running and stopped containers#
docker stats # List running containers with memory usage
docker stop [containerName]	# Stop continers
docker kill [containerName] # Kill Containers

jahend

// jQuery, select all instances of .box
$(".box");

// Instead, select the first instance of .box
document.querySelector(".box");

// …or select all instances of .box  
document.querySelectorAll(".box");

-------------------------------

jahend

function useFetch(url, defaultResponse) {
  const [data, setData] = useState(defaultResponse);

  async function getDataFromAPI() {
    try {
      const res = await fetch(url);
      const data = await res.json();
      setData({
        isLoading: false,
        data

jahend

package com.example.sub.subject

public enum LoggingLevel {
	PENDING(1, "1"), PROCESSING(2), PROCESSED(3);
    
    private int i;
    
    private LoggingLevel(int i) {
    	this.i = i;
    }

jahend

// HERITAGE
L'héritage est un moyen de créer de nouvelles classes à partir de classes déjà existantes afin de réutiliser leurs attributs et leurs comportements.
  
// ENCAPSULATION
  
// POLYMORPHISME

jahend

// list s3 bucket
aws s3 ls

// list all folders and objects in bucket
aws s3 ls s3://<bucket_name>

// list all folders and object in folder
aws s3 ls s3://<bucket_name>/<folder>

// Dl object to my desktop