410 B
410 B
title, tags
| title | tags |
|---|---|
| complement | function,logic,beginner |
Returns a function that is the logical complement of the given function, fn.
Use the logical not (!) operator on the result of calling fn with any supplied args.
const complement = fn => (...args) => !fn(...args);
const isEven = num => num % 2 === 0;
const isOdd = complement(isEven);
isOdd(2); // false
isOdd(3); // true