lai32290

const matriz = [ [1, 2, 3], [4, 5, 6], [7, 8, 9] ];
const valorInicial = [];
const vetor = matriz.reduce(function achatar(resultadoAnterior, lista) {
  return [ ...resultadoAnterior, ...lista ];
}, valorInicial);
console.log(vetor);
// [1, 2, 3, 4, 5, 6, 7, 8, 9]

lai32290

const ingredientes = [ 'pao', 'tomate', 'queijo', 'ovo frito', 'ketchup', 'mostarda', 'pao' ];
const lanche = ingredientes.reduce(function juntarComPao(resultadoAnterior, ingrediente) {
  return `${resultadoAnterior}, ${ingrediente}`;
}, 'prato');
console.log(`Aqui está o seu lanche: ${lanche}`);
// Aqui está o seu lanche: prato, pao, tomate, queijo, ovo frito, ketchup, mostarda, pao

lai32290

const ingredientes = [ 'pao', 'tomate', 'queijo', 'ovo frito', 'ketchup', 'mostarda', 'pao' ];
const lanche = ingredientes.reduce(function juntarComPao(resultadoAnterior, ingrediente) {
  return `${resultadoAnterior}, ${ingrediente}`;
});
console.log(`Aqui está o seu lanche: ${lanche}`);
// Aqui está o seu lanche: , pao, tomate, queijo, ovo frito, ketchup, mostarda, pao

lai32290

// __tests__/accordion.rtl.js
import '@testing-library/jest-dom/extend-expect'
import React from 'react'
import {render, screen} from '@testing-library/react'
import userEvent from '@testing-library/user-event'
import Accordion from '../accordion'
test('can open accordion items to see the contents', () => {
  const hats = {title: 'Favorite Hats', contents: 'Fedoras are classy'}
  const footware = {
    title: 'Favorite Footware',

lai32290

test('setOpenIndex sets the open index state properly', () => {
    const wrapper = mount(<Accordion items={[]} />)
-   expect(wrapper.state('openIndex')).toEqual(0)
+   expect(wrapper.state('openIndexes')).toEqual([0])
    wrapper.instance().setOpenIndex(1)
-   expect(wrapper.state('openIndex')).toEqual(1)
+   expect(wrapper.state('openIndexes')).toEqual([1])
})

lai32290

class Accordion extends React.Component {
-  state = {openIndex: 0}
-  setOpenIndex = openIndex => this.setState({openIndex})
+  state = {openIndexes: [0]}
+  setOpenIndex = openIndex => this.setState({openIndexes: [openIndex]})
   render() {
-    const {openIndex} = this.state
+    const {openIndexes} = this.state
     return (
       <div>

lai32290

// __tests__/accordion.enzyme.js
import React from 'react'
// if you're wondering why not shallow,
// then please read <https://kcd.im/shallow>
import Enzyme, {mount} from 'enzyme'
import EnzymeAdapter from 'enzyme-adapter-react-16'
import Accordion from '../accordion'
// Setup enzyme's react adapter
Enzyme.configure({adapter: new EnzymeAdapter()})
test('setOpenIndex sets the open index state properly', () => {

lai32290

// accordion.js
import React from 'react'
import AccordionContents from './accordion-contents'
class Accordion extends React.Component {
  state = {openIndex: 0}
  setOpenIndex = openIndex => this.setState({openIndex})
  render() {
    const {openIndex} = this.state
    return (
      <div>

lai32290

public class Observer<T>
{
    public Observer() { }

    public Observer(T initValue)
    {
        value = initValue;
    }

    private T value;

lai32290

const Nightmare = require('nightmare')
const nightmare = Nightmare({ show: true })

nightmare
    .goto('http://blablablablabla/logon/logon.asp')
    .wait(() => {
      return document.querySelector('[name=username]') !== null;
    })
    .evaluate(() => {
        document.querySelector('[name=username]').value = "visitante";