xprod.js•891 B
var _curry2 = require('./internal/_curry2');
/**
* Creates a new list out of the two supplied by creating each possible pair
* from the lists.
*
* @func
* @memberOf R
* @since v0.1.0
* @category List
* @sig [a] -> [b] -> [[a,b]]
* @param {Array} as The first list.
* @param {Array} bs The second list.
* @return {Array} The list made by combining each possible pair from
* `as` and `bs` into pairs (`[a, b]`).
* @example
*
* R.xprod([1, 2], ['a', 'b']); //=> [[1, 'a'], [1, 'b'], [2, 'a'], [2, 'b']]
*/
module.exports = _curry2(function xprod(a, b) { // = xprodWith(prepend); (takes about 3 times as long...)
var idx = 0;
var ilen = a.length;
var j;
var jlen = b.length;
var result = [];
while (idx < ilen) {
j = 0;
while (j < jlen) {
result[result.length] = [a[idx], b[j]];
j += 1;
}
idx += 1;
}
return result;
});