@extra-entries/subsets.min v2.2.18

Lists all possible subsets. :package: :smiley_cat: :running: :vhs: :moon: :scroll: :newspaper: :blue_book:

Similar: subset, subsets, isSubset.

This is part of package extra-entries.

This is browserified, minified version of @extra-entries/subsets. It is exported as global variable entries_subsets. CDN: unpkg, jsDelivr.

entries.subsets(x, [n]);
// x: a map
// n: number of entries (-1 => any)

const entries = require("extra-entries");

var x = [["a", 1], ["b", 2]];
[...entries.subsets(x)].map(a => [...a]);
// [ [], [ [ "a", 1 ] ], [ [ "b", 2 ] ], [ [ "a", 1 ], [ "b", 2 ] ] ]

var x = [["a", 1], ["b", 2], ["c", 3]];
[...entries.subsets(x)].map(a => [...a]);
// [
//   [],
//   [ [ "a", 1 ] ],
//   [ [ "b", 2 ] ],
//   [ [ "a", 1 ], [ "b", 2 ] ],
//   [ [ "c", 3 ] ],
//   [ [ "a", 1 ], [ "c", 3 ] ],
//   [ [ "b", 2 ], [ "c", 3 ] ],
//   [ [ "a", 1 ], [ "b", 2 ], [ "c", 3 ] ]
// ]

References

• Data.List.subsequences: Haskell