isDisjoint (original) (raw)

Examine if arrays have no value in common.

Similar: isUnique, isDisjoint, intersection.

function isDisjoint(x, y, fc, fm) // x: an array // y: another array // fc: compare function (a, b) // fm: map function (v, i, x)

⏱️ Compare function ⇒ O(n²).

const xarray = require('extra-array');

var x = [1, 2, 3, 4]; xarray.isDisjoint(x, [2, 5]); // → false

xarray.isDisjoint(x, [-2, -5]); // → true

xarray.isDisjoint(x, [-2, -5], (a, b) => Math.abs(a) - Math.abs(b)); // → false

xarray.isDisjoint(x, [-2, -5], null, v => Math.abs(v)); // → false

References

• Data.Set.disjoint() : Haskell
• Set.isdisjoint() : Python