Matheus Lucas da Silva mathenls

coproduto / reduce-map-filter.js

Created March 19, 2022 23:24

	const reverse = (array) =>
	array.reduce((acc, elem) => [elem].concat(acc), []);

	const map = (array, fun) =>
	reverse(array.reduce((acc, elem) => [fun(elem)].concat(acc), []));

	const filter = (array, pred) =>
	reverse(array.reduce((acc, elem) => pred(elem) ? [elem].concat(acc) : acc, []));