kutyel

const regex = /(?<year>\d{4})-(?<month>\d{2})-(?<day>\d{2})/u
const result = regex.exec('2018-07-05')

console.log(result[0]) // > '2018-07-05'
console.log(result[1]) // > '2018'
console.log(result[2]) // > '07'
console.log(result[3]) // > '05'

console.log(result.groups.year)  // > '2018'
console.log(result.groups.month) // > '07'

kutyel

{
  "hero": {
    "heading": "Flavio Corpa",
    "subheading": "JavaScript",
    "titles": [
      "Engineer",
      "Ninja",
      "Jedi",
      "Rockstar",
      "Djinn",

kutyel

case “REMOVE_LIST_ELEMENT”:
  return [...xs.slice(0, xs.indexOf(index)), ...xs.slice(xs.indexOf(index + 1))];

kutyel

xs->Belt.List.keep(x => x != item);

kutyel

const city = cities.find(x => x.id === cityId);

kutyel

let city = cities->Belt.List.getBy(x => x.id == cityId);

kutyel

switch(city) {
  | None => Js.log(“not found!”)
  | Some(city) => Js.log(“found:” ++ city.name)
}

kutyel

<ul>
  {[“foo”, “bar”, “baz”].map((x, key) => <li key={key}>{x}</li>)}
</ul>

kutyel

<ul>
  {[|“foo”, “bar”, “baz”|]
  ->Belt.Array.mapWithIndex((key, x) => {let key = string_of_int(key); <li key>{ReasonReact.string(x)}</li>})
  ->ReasonReact.array}
</ul>

kutyel

{
  "1782228941182106890_3448238252": [
    {
      "from": {
        "full_name": "rosaparksragdoll"
      },
      "text": "Hello Lovely 🐈🐾"
    }
  ],
  "1878968952505694822_3448238252": [