hasSubset

Checks if lists has a subset. [:running:] [:vhs:] [:package:] [:moon:] [:ledger:]

Alternatives: [has], [hasValue], [hasEntry], [hasSubset], [hasPath].
Similar: [subset], [subsets], [hasSubset].

lists.isSubset(x, y, [fc], [fm]);
// x:  lists
// y:  subset?
// fc: compare function (a, b)
// fm: map function (v, k, x)

const lists = require('extra-lists');

var x = [['a', 'b', 'c', 'd'], [1, 2, 3, 4]];
var y = [['b', 'd'], [2, 4]];
lists.hasSubset(x, y);
// true

var y = [['b', 'd'], [-2, -4]];
lists.hasSubset(x, y);
// false

lists.hasSubset(x, y, (a, b) => Math.abs(a) - Math.abs(b));
// true

lists.hasSubset(x, y, null, v => Math.abs(v));
// true

references

• Data.List.isSubsequenceOf: Haskell
• List-Extra.isSubsequenceOf: elm