Packed vs. holey arrays (v12)

Revision 12 of this benchmark created on

Description

Same data in the four cases, NaN vs delete vs expanding past size vs undefined.

Setup

var packed_array = [0, '1', 2, 3, 4, 5, 6, 7, 8, Number.NaN, 10];
    
    var holey_array1 = [0, '1', 2, 3, 4, 5, 6, 7, 8, Number.NaN, 10];
    delete holey_array1[9];
    
    var holey_array2 = [0, '1', 2, 3, 4, 5, 6, 7, 8];
    holey_array2[10] = 10;
    
    var holey_array3 = [0, '1', 2, 3, 4, 5, 6, 7, 8, undefined, 10];
    
    function packed_sum() {
      var sum = 0;
      for (var i = 0; i < packed_array.length; i++) {
        sum += packed_array[i];
      }
    }
    
    function holey_sum1() {
      var sum = 0;
      for (var i = 0; i < holey_array1.length; i++) {
        sum += holey_array1[i];
      }
    }
    
    function holey_sum2() {
      var sum = 0;
      for (var i = 0; i < holey_array2.length; i++) {
        sum += holey_array2[i];
      }
    }
    
    function holey_sum3() {
      var sum = 0;
      for (var i = 0; i < holey_array3.length; i++) {
        sum += holey_array3[i];
      }
    }

Test runner

Ready to run.

Testing in
TestOps/sec
Packed array sum
packed_sum();
ready
Holey array sum 1
holey_sum1();
ready
Holey array sum 2
holey_sum2();
ready
Holey array sum 3
holey_sum3();
ready

Revisions

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