38 lines
No EOL
996 B
JavaScript
38 lines
No EOL
996 B
JavaScript
import _curry2 from "./internal/_curry2.js";
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/**
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* Creates a new list out of the two supplied by creating each possible pair
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* from the lists.
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*
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* @func
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* @memberOf R
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* @since v0.1.0
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* @category List
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* @sig [a] -> [b] -> [[a,b]]
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* @param {Array} as The first list.
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* @param {Array} bs The second list.
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* @return {Array} The list made by combining each possible pair from
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* `as` and `bs` into pairs (`[a, b]`).
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* @example
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*
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* R.xprod([1, 2], ['a', 'b']); //=> [[1, 'a'], [1, 'b'], [2, 'a'], [2, 'b']]
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* @symb R.xprod([a, b], [c, d]) = [[a, c], [a, d], [b, c], [b, d]]
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*/
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var xprod = /*#__PURE__*/_curry2(function xprod(a, b) {
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// = xprodWith(prepend); (takes about 3 times as long...)
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var i = 0;
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var ilen = a.length;
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var j;
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var jlen = b.length;
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var result = Array(ilen * jlen);
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while (i < ilen) {
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j = 0;
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while (j < jlen) {
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result[i * jlen + j] = [a[i], b[j]];
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j += 1;
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}
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i += 1;
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}
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return result;
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});
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export default xprod; |