array-differ

What is array-differ?

The array-differ npm package is a simple utility that allows you to find the difference between two arrays, essentially returning elements that are present in the first array but not in the second. It is useful for filtering out unwanted elements when comparing lists.

What are array-differ's main functionalities?

Array Difference

This code sample demonstrates how to use array-differ to find the difference between two arrays. It filters out elements from the first array that are not present in the second array, returning [1] in this case.

[1, 2, 3].filter(element => !['2', '3', '4'].includes(element))

Other packages similar to array-differ

lodash.difference

Lodash provides a method called _.difference which returns the new array of filtered values. It is part of the larger Lodash library which offers a wide range of utilities for working with arrays, objects, and other types. Compared to array-differ, lodash.difference is part of a larger utility library and may be preferred if you are already using Lodash in your project.

underscore

Underscore.js is a utility library that offers a function similar to array-differ called _.difference. It works in a similar way but is part of a larger set of utilities that Underscore provides. If you need more than just array difference functionality, Underscore might be a better choice.

ramda

Ramda is a functional programming library that includes a difference function similar to array-differ. Ramda's approach is more functional and immutable, which might be preferable for certain coding paradigms. It is a good alternative if you are looking for a library that promotes functional programming.

README

array-differ

Create an array with values that are present in the first input array but not additional ones

Install

$ npm install --save array-differ

Usage

const arrayDiffer = require('array-differ');

arrayDiffer([2, 3, 4], [3, 50]);
//=> [2, 4]

API

arrayDiffer(input, values, [values, ...])

Returns a new array.

input

Type: array

values

Type: array

Arrays of values to exclude.

License

MIT © Sindre Sorhus