usametov/destructure-first-and-rest.js

Created April 1, 2018 14:40

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ES6 pattern matching using destructuring

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destructure-first-and-rest.js

	const map = (f, [x, ...xs]) => (
	(x === undefined && xs.length === 0) ? []
	: [f(x), ...map(f, xs)]
	);

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