zip.js•917 B
var _curry2 = require('./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']]
*/
module.exports = _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;
});