@extra-array/unique-on

Removes duplicate values. 🏃 📼 📦 🌔

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

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

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

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

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

references

• Data.List.nub: Haskell
• List-Extra.unique: elm
• List-Extra.uniqueBy: elm
• _.uniq: lodash