choose

Applies a function to each element in an array and then returns an array of values v where the applied function returned Some(v). Returns an empty array when the input array is empty or when the applied chooser function returns None for all elements.

Type

type choose = <E, F>(e: Chooser<E, F>) => (array: Array<E>) => Array<F>

Example

import {choose} from 'fnxt/array';

const array = [0, 1, 2, 3, 4];
const chooser = choose(
  (x: number) => x % 2 === 0
    ? Opt.Some(x * 2)
    : Opt.None
);
chooser(array) // -> [0, 4, 8]