array-uniq

Create an array without duplicates

It's already pretty fast, but will be much faster when Set becomes available in V8 (especially with large arrays).

Install

$ npm install --save array-uniq

Usage

var arrayUniq = require('array-uniq')();

arrayUniq([1, 1, 2, 3, 3]);
//=> [1, 2, 3]

arrayUniq(['foo', 'foo', 'bar', 'foo']);
//=> ['foo', 'bar']

var Collection = require('poser').Array();
var collectionUniq = require('array-uniq')(Collection);
var col = new Collection().concat(['foo', 'foo', 'bar', 'foo'])

arrayUniq(col) instanceof Collection
//=> false
collectionUniq(col) instanceof Collection
//=> true

This is only necessary when no Set implementation exists, because when using Set, array-uniq delegates to the array's filter method.

License

MIT © Sindre Sorhus