Carlos Sandoval Montoya cdsandoval

## useMemo.jsx
function Component(){
  const [searchTerm, setSearchTerm] = React.useState("")

  const filterWithGoodName = React.useMemo(() => {
   return searchTerm.filter(.....)
  }, [searchTerm])

  return (
    <input onSearch={setSearchTerm}/>
}

## helper.js
function buildSearchGroups(term, searchFields) {
  const searchGroups = [];

  if (term) {
    const searchTermList = term.trim().split(' ');

    searchTermList.forEach(searchTerm => {
      const searchGroup = { m: 'or' };

      searchFields.forEach(field => {

## HOC and Example
HOC is a function with a component that return a new component.

//geolocation.js

function withGeolocation(Component) {
  function Geolocation() {
    const [latitude, setLatitude] = React.useState(0);
    const [longitude, setLongitude] = React.useState(0);

    React.useEffect(() => {

## async fetch
Using hooks with useEffect like this :

useState(async ()=>{
  const response = await fetch(url);
  const json = await response.json();
  setData(json);
}

- with Classes using compenentDidMount or willMount :

## async fetch
Using hooks with useEffect like this :

useState(async ()=>{
  const response = await fetch(url);
  const json = await response.json();
  setData(json);
}

- with Classes using compenentDidMount or willMount :

## index.html
<!DOCTYPE html>
<html>
  <head>
    <title>Propinas</title>
    <link rel="stylesheet" type="text/css" href="css/normalize.css" />
    <link rel="stylesheet" type="text/css" href="css/styles.css" />
  </head>

  <body>
    <div id="container">
	function Component(){
	const [searchTerm, setSearchTerm] = React.useState("")

	const filterWithGoodName = React.useMemo(() => {
	return searchTerm.filter(.....)
	}, [searchTerm])

	return (
	<input onSearch={setSearchTerm}/>
	}
	function buildSearchGroups(term, searchFields) {
	const searchGroups = [];

	if (term) {
	const searchTermList = term.trim().split(' ');

	searchTermList.forEach(searchTerm => {
	const searchGroup = { m: 'or' };

	searchFields.forEach(field => {
	HOC is a function with a component that return a new component.

	//geolocation.js

	function withGeolocation(Component) {
	function Geolocation() {
	const [latitude, setLatitude] = React.useState(0);
	const [longitude, setLongitude] = React.useState(0);

	React.useEffect(() => {
	Using hooks with useEffect like this :

	useState(async ()=>{
	const response = await fetch(url);
	const json = await response.json();
	setData(json);
	}

	- with Classes using compenentDidMount or willMount :
	<!DOCTYPE html>
	<html>
	<head>
	<title>Propinas</title>
	<link rel="stylesheet" type="text/css" href="css/normalize.css" />
	<link rel="stylesheet" type="text/css" href="css/styles.css" />
	</head>

	<body>
	<div id="container">