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x/ramda/zip.js

:ram: Practical functional Javascript
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import _curry2 from './internal/_curry2';

/** * Creates a new list out of the two supplied by pairing up equally-positioned * items from both lists. The returned list is truncated to the length of the * shorter of the two input lists. * Note: `zip` is equivalent to `zipWith(function(a, b) { return [a, b] })`. * * @func * @memberOf R * @since v0.1.0 * @category List * @sig [a] -> [b] -> [[a,b]] * @param {Array} list1 The first array to consider. * @param {Array} list2 The second array to consider. * @return {Array} The list made by pairing up same-indexed elements of `list1` and `list2`. * @example * * R.zip([1, 2, 3], ['a', 'b', 'c']); //=> [[1, 'a'], [2, 'b'], [3, 'c']] * @symb R.zip([a, b, c], [d, e, f]) = [[a, d], [b, e], [c, f]] */var zip = _curry2(function zip(a, b) { var rv = []; var idx = 0; var len = Math.min(a.length, b.length); while (idx < len) { rv[idx] = [a[idx], b[idx]]; idx += 1; } return rv;});export default zip;