Array Iteration (Nested) (v25)

Revision 25 of this benchmark created by Andre on

Description

Compare iterating forward or backwards of an array with nested loops

Setup

var arr = [];
    for (var i = 0; i < 10000; ++i) {
      arr.push(1);
    }

Test runner

Ready to run.

Testing in
TestOps/sec
forwards
for (var i = 0; i < arr.length; ++i) {
  for (var j = 0; j < arr.length; ++j) {}
}
ready
backwards
for (var i = arr.length; i > 0; --i) {
  for (var j = arr.length; j > 0; --j) {}
}
ready
Hard Coded Forward
for (var i = 0; i < 10000; ++i) {
  for (var j = 0; j < 10000; ++j) {}
}
ready
Cached Forward Iteration
for (var i = 0, c = arr.length; i < c; i++) {
  for (var j = 0, d = arr.length; j < d; j++) {}
}
ready
Cached Forward Iteration Unsigned
for (var i = 0 << 0, c = arr.length << 0; i < c; i++) {
  for (var j = 0 << 0, d = arr.length << 0; j < d; j++) {}
}
ready
backwards (while)
var i = arr.length << 0,
  j;
while (i > 0) {
  j = arr.length << 0;
  while (j > 0) {
    --j;
  }
  --i;
}
ready

Revisions

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