cartesianProduct - nodef/extra-iterable GitHub Wiki
List cartesian product of iterables.
Similar: cartesianProduct, zip.
function cartesianProduct(xs, fm)
// xs: iterables
// fm: map function (vs, i)
const xiterable = require('extra-iterable');
var x = [1, 2, 3];
var y = [10, 20, 30];
[...xiterable.cartesianProduct([x, y])];
// → [
// [1, 10], [1, 20],
// [1, 30], [2, 10],
// [2, 20], [2, 30],
// [3, 10], [3, 20],
// [3, 30]
//]
[...xiterable.cartesianProduct([x, y], ([a, b]) => a + b)];
// → [
// 11, 21, 31, 12, 22,
// 32, 13, 23, 33
//]