wwiechorek

Validação para cartão de crédito.

Bin e padrões para validação de cartão de crédito.

Bandeira	Começa com	Máximo de número	Máximo de número cvc
Visa	4	13,16	3
Mastercard	5	16	3

wwiechorek

#!/bin/bash

git add -A
git commit -m "$0"
git pull
git push

wwiechorek

import bodyParser from 'body-parser';
import compression from 'compression';
import express from 'express';
import cookieParser from 'cookie-parser';
import Loadable from 'react-loadable';

import render from './render';

const app = express();
const PORT = process.env.PORT || 3000;

wwiechorek

import Button from './Button'

<Button>Default</Button>
        
<Button inline>Inline</Button>

<Button inline primary>Primary</Button>

<Button
  inline

wwiechorek

import React, { useState } from 'react'

function AppHooks() {

  const [list, setList] = useState([])


  function run() {
    setInterval(() => {
      list.push(Math.random())

wwiechorek

import { Text } from 'react-native'

let oldText = Text.render;
Text.render = function (...args) {
    let origin = oldText.call(this, ...args);
    return React.cloneElement(origin, {
        style: [{fontFamily: 'Open Sans'}, origin.props.style]
    });
};

wwiechorek

import Document, { Head, Main, NextScript } from 'next/document';
// Import styled components ServerStyleSheet
import { ServerStyleSheet } from 'styled-components';

export default class MyDocument extends Document {

  static getInitialProps({ renderPage, req }) {
    // Step 1: Create an instance of ServerStyleSheet
    const sheet = new ServerStyleSheet();

wwiechorek

import React, { useEffect, useState, useCallback } from 'react'

function App() {
  const [user, setUser] = useState(false)
  const [count, setCount] = useState(0)

  const valid = useCallback(() => {
    console.log(count)
    if(count === 12) {
      alert("12")

wwiechorek

function createWorkerPool(max) {
    let current = 0
    let queue = []

    async function run() {
        if(current >= max || queue.length === 0) return

        current++
        let action = queue.shift()