uniq
DefinitelyTyped icon, indicating that this package has TypeScript declarations provided by the separate @types/uniq package

1.0.1 • Public • Published

uniq

Removes all duplicates from an array in place.

Usage

First install using npm:

npm install uniq

Then use it as follows:

 
var arr = [1, 1, 2, 2, 3, 5]
 
require("uniq")(arr)
console.log(arr)
 
//Prints:
//
//  1,2,3,5
//

require("uniq")(array[, compare, sorted])

Removes all duplicates from a sorted array in place.

  • array is the array to remove items from
  • compare is an optional comparison function that returns 0 when two items are equal, and something non-zero when they are different. If unspecified, then the default equals will be used.
  • sorted if true, then assume array is already sorted

Returns: A reference to array

Time Complexity: O(array.length * log(arra.length)) or O(array.length) if sorted

Why use this instead of underscore.uniq[ue]?

A few reasons:

  • This library updates the array in place without making an extra copy (and so it is faster for large arrays)
  • It also accepts a custom comparison function so you can remove duplicates from arrays containing object
  • It is more modular in the sense that it doesn't come with a bazillion other utility grab bag functions.

Credits

(c) 2013 Mikola Lysenko. MIT License

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Install

npm i uniq

Weekly Downloads

5,453,573

Version

1.0.1

License

MIT

Last publish

Collaborators

  • mikolalysenko