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Copy path00-advanced-functions.js
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155 lines (119 loc) · 2.66 KB
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/*
Clases 2 a 11 - Funciones avanzadas
Vídeo: https://youtu.be/iJvLAZ8MJ2E?t=346
*/
// Ciudadanos de primera clase
const greet = function (name) {
console.log(`Hola, ${name}`)
}
greet("Brais")
function processGreeting(greetFunction, name) {
greetFunction(name)
}
function returnGreeting() {
return greet
}
processGreeting(greet, "MoureDev")
const greet2 = returnGreeting()
greet2("Brais Moure")
// Arrow functions avanzadas
// - Retorno implícito
const multiply = (a, b) => a * b
console.log(multiply(2, 5))
// - this léxico
const handler = {
name: "Brais",
greeting: function () {
console.log(`Hola, ${this.name}`)
},
arrowGreeting: () => {
console.log(`Hola, ${this.name}`)
}
}
handler.greeting()
handler.arrowGreeting();
// IIFE (Expresión de Función Invocada Inmediatamente)
(function () {
console.log("IIFE clásico")
})();
(() => {
console.log("IIFE con arrow function")
})();
// Parámetros Rest (...)
function sum(...numbers) {
let result = 0
for (let number of numbers) {
result += number
}
return result
}
console.log(sum(1, 2, 3, 4, 5))
console.log(sum(10, 15))
// Operador Spread (...)
const numbers = [1, 2, 3]
function sumWithSpread(a, b, c) {
return a + b + c
}
console.log(sumWithSpread(1, 2, 3)) // Sin Spread
console.log(sumWithSpread(...numbers)) // Con Spread
// Closures (Clausuras)
function createCounter() {
let counter = 0
return function () {
counter++
console.log(`Contador: ${counter}`)
}
}
const counter = createCounter()
counter()
counter()
counter()
counter()
// Recursividad
function factorial(n) {
if (n <= 1) {
return 1
}
return n * factorial(n - 1)
}
console.log(factorial(5))
// Funciones parciales
function partialSum(a) {
return function (b, c) {
return sum(a, b, c)
}
}
const sumWith = partialSum(4)
console.log(sumWith(2, 3))
console.log(sumWith(1, 2))
// Currying
function currySum(a) {
return function (b) {
return function (c) {
return function (d) {
return sum(a, b, c, d)
}
}
}
}
const sumAB = currySum(1)(2)
const sumC = sumAB(3)
console.log(sumC(3))
console.log(sumC(4))
console.log(sumAB(5)(7))
// Callbacks
function processData(data, callback) {
const result = sum(...data)
callback(result)
}
function processResult(result) {
console.log(result)
}
function processResult2(result) {
console.log(`Mi resultado es: ${result}`)
}
processData([1, 2, 3], processResult)
processData([1, 2, 3], processResult2)
processData([1, 2, 3], (result) => {
console.log(`Mi resultado en la arrow function es: ${result}`)
})