mauricedb

import { useState } from 'react';

export function useCounter(initial = 0) {
  const [count, setCount] = useState(initial);

  return [count, () => setCount(count + 1)];
}

danilosilvadev

//This gist is a fast reference to ES06 to whose already knows es05.
//I'm trying to use a different approach: first the example and after the explanation.

//Lesson 1: Template literals

console.log(`hello ${firstname},
how are you?`); 

//Template literals are string literals with support for interpolation(using ${variable}) and multiple lines.

bschwartz757

/* Client side, works in Chrome 55 and Firefox 52 without transpilation */
//https://blogs.msdn.microsoft.com/typescript/2016/11/08/typescript-2-1-rc-better-inference-async-functions-and-more/
async function fetchURLs() {
    try {
      // Promise.all() lets us coalesce multiple promises into a single super-promise
      var data = await Promise.all([
        /* Alternatively store each in an array */
        // var [x, y, z] = await Promise.all([
        // parse results as json; fetch data response has several reader methods available:
        //.arrayBuffer()

Chavao

class Usuario(object):
    def nome(self):
        raise NotImplementedError
        
    def idade(self):
        raise NotImplementedError

class Jose(Usuario):
    def nome(self):
        return 'Jose'