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1.2 KiB
1.2 KiB
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.
arrayis the array to remove items fromcompareis 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.sortedif 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