push allocated vs dynamic (v16)

Revision 16 of this benchmark created on

Description

is it usefull to pre-allocate the array by setting the last value first when assigning some values ?

Setup

var n=10000;
    var myArray = [];
    
    var typedArray = new Int32Array(10000);

Test runner

Ready to run.

Testing in
TestOps/sec
push
for (var i=0; i<n; i++) { myArray.push(i) }
ready
reverse writing
  var i=n;
  while (i--) { myArray[i] =i }  
ready
reverse writing, array allocated with Array constructor
  var i=n;
  while (i--) { myArray[i] =i }  
ready
  var i=n;
  while (i--) { typedArray[i] =i }  
ready

Revisions

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