@extra-array/difference-on

Gives values of array not present in another. 🏃 📼 📦 🌔

Alternatives: compare, map.
This is part of package extra-array.

array.differenceOn(x, y, [fn], [ths]);
// x:   an array
// y:   another array
// fn:  map function (v, i, x)
// ths: this argument

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

var x = [1, 2, 3, 4, 5];
array.differenceOn(x, [2, 4]);
// [1, 3, 5]

array.differenceOn(x, [-2, -4]);
// [1, 2, 3, 4, 5]

array.differenceOn(x, [-2, -4], v => Math.abs(v));
// [1, 3, 5]

references

• Data.List.\: Haskell
• Data.Set.difference: Haskell
• Set.difference: Python