@extra-entries/is-subset v2.1.16

Checks if entries has a subset. :running: :package: :ledger:

Similar: subset, subsets, isSubset. This is part of package extra-entries.

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

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

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

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

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

entries.isSubset(x, y, null, v => Math.abs(v));
// true

references

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