Socket
Socket
Sign inDemoInstall

arr-diff

Package Overview
Dependencies
0
Maintainers
3
Versions
11
Alerts
File Explorer

Advanced tools

Install Socket

Protect your apps from supply chain attacks

Install

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.

    4.0.0latest
    GitHub
    npm

Version published
Maintainers
3
Weekly downloads
16,743,866
increased by2.13%

Weekly downloads

Package description

What is arr-diff?

The arr-diff npm package is used to compute the difference between one or more arrays, returning an array that contains the values from the first array that are not present in the other arrays.

What are arr-diff's main functionalities?

Basic array difference

This feature allows you to find the elements that are present in the first array but not in the subsequent arrays. The code sample demonstrates how to use arr-diff to filter out the numbers 2 and 4 from the array [1, 2, 3, 4, 5], resulting in [1, 3, 5].

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

Multiple array difference

This feature is used to find the difference between one array and multiple other arrays. The code sample shows how to use arr-diff to filter out the numbers 2, 3, 4, and 5 from the array [1, 2, 3, 4, 5], resulting in [1].

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

Other packages similar to arr-diff

Readme

Source

arr-diff NPM version NPM monthly downloads Linux Build Status

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

Contributing

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

Contributors

CommitsContributor
33jonschlinkert
2paulmillr

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

License

Copyright © 2017, Jon Schlinkert. Released under the MIT License.


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

Keywords

FAQs

Last updated on 14 Apr 2017

Did you know?

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.

Install

Related posts

SocketSocket SOC 2 Logo

Product

  • Package Alerts
  • Integrations
  • Docs
  • Pricing
  • FAQ
  • Roadmap

Stay in touch

Get open source security insights delivered straight into your inbox.


  • Terms
  • Privacy
  • Security

Made with ⚡️ by Socket Inc