both.md

title	tags	author_title	author_url	author_image_url	description	image
both	function,logic,beginner	Deepak Vishwakarma	https://github.com/deepakshrma	https://avatars2.githubusercontent.com/u/7682731?s=400	Implementation of "both" in typescript, javascript and deno.	https://www.positronx.io/wp-content/uploads/2018/11/positronx-banner-1152-1.jpg

Returns true if both functions return true for a given set of arguments, false otherwise.

Use the logical and (&&) operator on the result of calling the two functions with the supplied args.

type Func<T> = (...args: T[]) => any;
export const both = <T = any>(f: Func<T>, g: Func<T>) => (...args: T[]) =>
  f(...args) && g(...args);

const isEven = (num: number) => num % 2 === 0;
const isPositive = (num: number) => num > 0;
const isPositiveEven = both(isEven, isPositive);
isPositiveEven(4); // true
isPositiveEven(-2); // false