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array-unique

Remove duplicate values from an array. Fastest ES5 implementation.

    0.3.2latest
    GitHub
    npm

Version published
Maintainers
2
Weekly downloads
16,893,422
increased by3.69%

Weekly downloads

Package description

What is array-unique?

The array-unique npm package is a small utility that removes duplicate values from an array. It is useful when you need to ensure that an array contains only unique items without having to write custom deduplication logic.

What are array-unique's main functionalities?

Deduplicate an array

This feature allows you to remove duplicate values from an array, resulting in an array of only unique items. The `arrayUnique` function is used as a callback for the `filter` method.

[1, 2, 2, 3, 4, 4, 5, 5].filter(arrayUnique)

Other packages similar to array-unique

Readme

Source

array-unique NPM version NPM downloads Build Status

Remove duplicate values from an array. Fastest ES5 implementation.

Install

Install with npm:

$ npm install --save array-unique

Usage

var unique = require('array-unique');

var arr = ['a', 'b', 'c', 'c'];
console.log(unique(arr)) //=> ['a', 'b', 'c']
console.log(arr)         //=> ['a', 'b', 'c']

/* The above modifies the input array. To prevent that at a slight performance cost: */
var unique = require("array-unique").immutable;

var arr = ['a', 'b', 'c', 'c'];
console.log(unique(arr)) //=> ['a', 'b', 'c']
console.log(arr)         //=> ['a', 'b', 'c', 'c']

About

  • arr-diff: Returns an array with only the unique values from the first array, by excluding all… more | homepage
  • arr-flatten: Recursively flatten an array or arrays. This is the fastest implementation of array flatten. | homepage
  • arr-map: Faster, node.js focused alternative to JavaScript's native array map. | homepage
  • arr-pluck: Retrieves the value of a specified property from all elements in the collection. | homepage
  • arr-reduce: Fast array reduce that also loops over sparse elements. | homepage
  • arr-union: Combines a list of arrays, returning a single array with unique values, using strict equality… more | homepage

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue.

Building docs

(This document was generated by verb-generate-readme (a verb generator), please don't edit the readme directly. Any changes to the readme must be made in .verb.md.)

To generate the readme and API documentation with verb:

$ npm install -g verb verb-generate-readme && verb

Running tests

Install dev dependencies:

$ npm install -d && npm test

Author

Jon Schlinkert

License

Copyright © 2016, Jon Schlinkert. Released under the MIT license.


This file was generated by verb-generate-readme, v0.1.28, on July 31, 2016.

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Last updated on 01 Aug 2016

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Socket installs a GitHub app to automatically flag issues on every pull request and report the health of your dependencies. Find out what is inside your node modules and prevent malicious activity before you update the dependencies.

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