2.2.18 • Published 3 years ago
@extra-entries/cartesian-product v2.2.18
Lists cartesian product of entries. :package: :smiley_cat: :running: :vhs: :moon: :scroll: :newspaper: :blue_book:
Similar: cartesianProduct, zip.
This is part of package extra-entries.
entries.cartesianProduct(xs, fm);
// xs: n entries
// fm: map function (vs, i)
const entries = require("extra-entries");
var x = [["a", 1], ["b", 2], ["c", 3]];
var y = [["d", 10], ["e", 20]];
[...entries.cartesianProduct([x, y])].map(x => [...x]);
// [
// [ [ "a", 1 ], [ "d", 10 ] ],
// [ [ "a", 1 ], [ "e", 20 ] ],
// [ [ "b", 2 ], [ "d", 10 ] ],
// [ [ "b", 2 ], [ "e", 20 ] ],
// [ [ "c", 3 ], [ "d", 10 ] ],
// [ [ "c", 3 ], [ "e", 20 ] ]
// ]
[...entries.cartesianProduct([x, y], a => entries.max(a))];
// [
// [ "d", 10 ],
// [ "e", 20 ],
// [ "d", 10 ],
// [ "e", 20 ],
// [ "d", 10 ],
// [ "e", 20 ]
// ]
References
2.2.18
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2.2.17
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