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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.

# Install

Install with npm:

$ npm install --save arr-diff

Install with yarn:

$ yarn add arr-diff

Install with bower

$ bower install arr-diff --save

# Usage

Returns the difference between the first array and additional arrays.

var diff = require('arr-diff');
var a = ['a', 'b', 'c', 'd'];
var b = ['b', 'c'];
console.log(diff(a, b))
//=> ['a', 'd']

# Benchmarks

This library versus array-differ, on April 14, 2017:

Benchmarking: (4 of 4)
· long-dupes
· long
· med
· short
# benchmark/fixtures/long-dupes.js (100804 bytes)
arr-diff-3.0.0 x 822 ops/sec ±0.67% (86 runs sampled)
arr-diff-4.0.0 x 2,141 ops/sec ±0.42% (89 runs sampled)
array-differ x 708 ops/sec ±0.70% (89 runs sampled)
fastest is arr-diff-4.0.0
# benchmark/fixtures/long.js (94529 bytes)
arr-diff-3.0.0 x 882 ops/sec ±0.60% (87 runs sampled)
arr-diff-4.0.0 x 2,329 ops/sec ±0.97% (83 runs sampled)
array-differ x 769 ops/sec ±0.61% (90 runs sampled)
fastest is arr-diff-4.0.0
# benchmark/fixtures/med.js (708 bytes)
arr-diff-3.0.0 x 856,150 ops/sec ±0.42% (89 runs sampled)
arr-diff-4.0.0 x 4,665,249 ops/sec ±1.06% (89 runs sampled)
array-differ x 653,888 ops/sec ±1.02% (86 runs sampled)
fastest is arr-diff-4.0.0
# benchmark/fixtures/short.js (60 bytes)
arr-diff-3.0.0 x 3,078,467 ops/sec ±0.77% (93 runs sampled)
arr-diff-4.0.0 x 9,213,296 ops/sec ±0.65% (89 runs sampled)
array-differ x 1,337,051 ops/sec ±0.91% (92 runs sampled)
fastest is arr-diff-4.0.0

# About

## Related projects

- arr-flatten: Recursively flatten an array or arrays. This is the fastest implementation of array flatten. | homepage
- array-filter: Array::filter for older browsers. | homepage
- array-intersection: Return an array with the unique values present in all given arrays using strict equality… more | homepage

## Contributing

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

## Contributors

Commits | Contributor
--- | ---
33 | jonschlinkert
2 | paulmillr

## Building docs

_(This project's readme.md is generated by verb, please don't edit the readme directly. Any changes to the readme must be made in the .verb.md readme template.)_

To generate the readme, run the following command:

$ npm install -g verbose/verb#dev verb-generate-readme && verb

## Running tests

Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:

$ npm install && npm test

## Author

Jon Schlinkert

- github/jonschlinkert
- twitter/jonschlinkert

## License

Copyright © 2017, Jon Schlinkert. Released under the [MIT License](LICENSE).

This file was generated by verb-generate-readme, v0.5.0, on April 14, 2017.