Example:
var uniqs = require('uniqs'); var foo = { foo: 23 }; var list = [3, 2, 2, 1, foo, foo]; uniqs(list); // => [3, 2, 1, { foo: 23 }]
You can pass multiple lists to create a union:
uniqs([2, 1, 1], [2, 3, 3, 4], [4, 3, 2]); // => [2, 1, 3, 4]
Passing individual items works too:
uniqs(3, 2, 2, [1, 1, 2]); // => [3, 2, 1]
This package has been written to accompany utilities like flatten as alternative to full-blown libraries like underscore or lodash.
The implementation is optimized for simplicity rather than performance and looks like this:
module.exports = function uniqs() { var list = Array.prototype.concat.apply([], arguments); return list.filter(function(item, i) { return i == list.indexOf(item); }); };
MIT