Info

Who's faster to delete an element from an array, underscore's without method or implementation of Array remove method ?

Preparation code

<script src="//underscorejs.org/underscore-min.js"></script>
<script>
  Benchmark.prototype.setup = function() {
    var arr =  _.range(100000);
    var arr2 = _.range(100000);
    var i = 0;
    var j = 0;
    
    Array.prototype.remove = function (needle) {
        var i = 0;
        while (this[i] !== needle && i < this.length - 1) ++i;
        if (this[i] === needle) {
                this.splice(i, 1);
        }
        else {
                throw new Error(needle + " not found in array " + this);
        }
    };
  };
</script>

Test runner

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_.without(arr, i);
++i;

arr2.remove(j);
++j;

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published on 7th August 2012
• Revision 2: published on 17th February 2013

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