| 1 |
3a515b92
|
cagy
|
# array-unique [](https://www.npmjs.com/package/array-unique) [](https://npmjs.org/package/array-unique) [](https://travis-ci.org/jonschlinkert/array-unique)
|
| 2 |
|
|
|
| 3 |
|
|
Remove duplicate values from an array. Fastest ES5 implementation.
|
| 4 |
|
|
|
| 5 |
|
|
## Install
|
| 6 |
|
|
|
| 7 |
|
|
Install with [npm](https://www.npmjs.com/):
|
| 8 |
|
|
|
| 9 |
|
|
```sh
|
| 10 |
|
|
$ npm install --save array-unique
|
| 11 |
|
|
```
|
| 12 |
|
|
|
| 13 |
|
|
## Usage
|
| 14 |
|
|
|
| 15 |
|
|
```js
|
| 16 |
|
|
var unique = require('array-unique');
|
| 17 |
|
|
|
| 18 |
|
|
var arr = ['a', 'b', 'c', 'c'];
|
| 19 |
|
|
console.log(unique(arr)) //=> ['a', 'b', 'c']
|
| 20 |
|
|
console.log(arr) //=> ['a', 'b', 'c']
|
| 21 |
|
|
|
| 22 |
|
|
/* The above modifies the input array. To prevent that at a slight performance cost: */
|
| 23 |
|
|
var unique = require("array-unique").immutable;
|
| 24 |
|
|
|
| 25 |
|
|
var arr = ['a', 'b', 'c', 'c'];
|
| 26 |
|
|
console.log(unique(arr)) //=> ['a', 'b', 'c']
|
| 27 |
|
|
console.log(arr) //=> ['a', 'b', 'c', 'c']
|
| 28 |
|
|
```
|
| 29 |
|
|
|
| 30 |
|
|
## About
|
| 31 |
|
|
|
| 32 |
|
|
### Related projects
|
| 33 |
|
|
|
| 34 |
|
|
* [arr-diff](https://www.npmjs.com/package/arr-diff): Returns an array with only the unique values from the first array, by excluding all… [more](https://github.com/jonschlinkert/arr-diff) | [homepage](https://github.com/jonschlinkert/arr-diff "Returns an array with only the unique values from the first array, by excluding all values from additional arrays using strict equality for comparisons.")
|
| 35 |
|
|
* [arr-flatten](https://www.npmjs.com/package/arr-flatten): Recursively flatten an array or arrays. This is the fastest implementation of array flatten. | [homepage](https://github.com/jonschlinkert/arr-flatten "Recursively flatten an array or arrays. This is the fastest implementation of array flatten.")
|
| 36 |
|
|
* [arr-map](https://www.npmjs.com/package/arr-map): Faster, node.js focused alternative to JavaScript's native array map. | [homepage](https://github.com/jonschlinkert/arr-map "Faster, node.js focused alternative to JavaScript's native array map.")
|
| 37 |
|
|
* [arr-pluck](https://www.npmjs.com/package/arr-pluck): Retrieves the value of a specified property from all elements in the collection. | [homepage](https://github.com/jonschlinkert/arr-pluck "Retrieves the value of a specified property from all elements in the collection.")
|
| 38 |
|
|
* [arr-reduce](https://www.npmjs.com/package/arr-reduce): Fast array reduce that also loops over sparse elements. | [homepage](https://github.com/jonschlinkert/arr-reduce "Fast array reduce that also loops over sparse elements.")
|
| 39 |
|
|
* [arr-union](https://www.npmjs.com/package/arr-union): Combines a list of arrays, returning a single array with unique values, using strict equality… [more](https://github.com/jonschlinkert/arr-union) | [homepage](https://github.com/jonschlinkert/arr-union "Combines a list of arrays, returning a single array with unique values, using strict equality for comparisons.")
|
| 40 |
|
|
|
| 41 |
|
|
### Contributing
|
| 42 |
|
|
|
| 43 |
|
|
Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
|
| 44 |
|
|
|
| 45 |
|
|
### Building docs
|
| 46 |
|
|
|
| 47 |
|
|
_(This document was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme) (a [verb](https://github.com/verbose/verb) generator), please don't edit the readme directly. Any changes to the readme must be made in [.verb.md](.verb.md).)_
|
| 48 |
|
|
|
| 49 |
|
|
To generate the readme and API documentation with [verb](https://github.com/verbose/verb):
|
| 50 |
|
|
|
| 51 |
|
|
```sh
|
| 52 |
|
|
$ npm install -g verb verb-generate-readme && verb
|
| 53 |
|
|
```
|
| 54 |
|
|
|
| 55 |
|
|
### Running tests
|
| 56 |
|
|
|
| 57 |
|
|
Install dev dependencies:
|
| 58 |
|
|
|
| 59 |
|
|
```sh
|
| 60 |
|
|
$ npm install -d && npm test
|
| 61 |
|
|
```
|
| 62 |
|
|
|
| 63 |
|
|
### Author
|
| 64 |
|
|
|
| 65 |
|
|
**Jon Schlinkert**
|
| 66 |
|
|
|
| 67 |
|
|
* [github/jonschlinkert](https://github.com/jonschlinkert)
|
| 68 |
|
|
* [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
|
| 69 |
|
|
|
| 70 |
|
|
### License
|
| 71 |
|
|
|
| 72 |
|
|
Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert).
|
| 73 |
|
|
Released under the [MIT license](https://github.com/jonschlinkert/array-unique/blob/master/LICENSE).
|
| 74 |
|
|
|
| 75 |
|
|
***
|
| 76 |
|
|
|
| 77 |
|
|
_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.1.28, on July 31, 2016._
|