Les memes marchent mieux ^^
There are only two kinds of languages: the ones people complain about and the ones nobody uses.
en 1995, rien à voir avec le JavaScript aujourd'hui
Pas le choix côté navigateur
Les navigateurs ont leur propre implémentation du JavaScript
Prendre en compte les navigateurs
C v1.0
C v2.0
node_modules
a
b
node_modules
c
node_modules
c
C ^1.0
C ^1.1
node_modules
a
b
c
C v1.0
C v2.0
Le problème n'est pas lié au JavaScript
fs.readdir(source, function (err, files) {
if (err) {
console.log('Error finding files: ' + err)
} else {
files.forEach(function (filename, fileIndex) {
console.log(filename)
gm(source + filename).size(function (err, values) {
if (err) {
console.log('Error identifying file size: ' + err)
} else {
console.log(filename + ' : ' + values)
aspect = (values.width / values.height)
widths.forEach(function (width, widthIndex) {
height = Math.round(width / aspect)
console.log('resizing ' + filename + 'to ' + height + 'x' + height)
this.resize(width, height).write(dest + 'w' + width + '_' + filename, function(err) {
if (err) console.log('Error writing file: ' + err)
})
}.bind(this))
}
})
})
}
})
Résolu grâce aux promesses
const files = await readdir(source)
for (const file of files) {
const file = await readFile(file)
// ...
}
const files = await readdir(source)
const filesContent = await Promise.all(
files.map(file => readFile(file))
)
[] + [] // ''
[] + {} // Object
{} + [] // 0
{} + {} // NaN
[3, 10, 1].sort() // [1, 10, 3]
['1', '2', '3']
.map(parseInt) // [1, NaN, NaN]
Mais il y a TypeScript
Seulement à la compilation
<?php
class MaClass {
private Dep1 $dep;
function __construct(Dep1 $dep) {
$this->dep = $dep;
}
}
import { Injectable } from '@nestjs/common';
import { Cat } from './interfaces/cat.interface';
@Injectable()
export class CatsService {
private readonly cats: Cat[] = [];
findAll(): Cat[] {
return this.cats;
}
}
import { Controller, Get } from '@nestjs/common';
import { CatsService } from './cats.service';
import { Cat } from './interfaces/cat.interface';
@Controller('cats')
export class CatsController {
constructor(private catsService: CatsService) {}
@Get()
async findAll(): Promise<Cat[]> {
return this.catsService.findAll();
}
}
import Route from '@ioc:Adonis/Core/Route'
Route.post('add-to-cart', async ({ request, response }) => {
/**
* Read cookie by name
*/
const existingItems = request.cookie('cart-items', [])
/**
* Set/update cookie
*/
const newItems = existingItems.concat([{ id: 10 }])
response.cookie('cart-items', newItems)
})
Route.delete('clear-cart', async ({ response }) => {
/**
* Clear cookie
*/
response.clearCookie('cart-items')
})
slice := []string{"a", "b", "c", "d", "e"}
sliceLength := len(slice)
var wg sync.WaitGroup
wg.Add(sliceLength)
for i := 0; i < sliceLength; i++ {
go func(i int) {
defer wg.Done()
slowFunction(slice[i])
}(i)
}
wg.Wait()
const slice = ["a", "b", "c", "d", "e"]
for (const item of items) {
slowFunction(item)
}
function readFile(id) {
const {file} = await mysql.first('SELECT file FROM files WHERE id = ?', [id])
const content = await readFile(file)
await mysql.execute('INSERT INTO post SET content = ?', [content])
}
await readFile(3)
Comprendre c'est mieux