Info

The usage of a single integer, as a boolean array (up to 31 booleans).

Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var boolArr = new Array(31);
    var boolInt = 0;
    var bitMaskArr = new Array(31);
    
    var _a = 0,
        _b, _c, _d;
    
    for (_a = 0; _a < 31; ++_a) {
      boolArr[_a] = false;
      bitMaskArr[_a] = Math.pow(2, _a);
    }
  };
</script>

Test runner

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boolArr[0] = true;

boolInt |= 0x1;

for (_a = 0; _a < 30; ++_a) {
  boolArr[_a] = true;
}

for (_a = 0; _a < 30; ++_a) {
  boolInt |= Math.pow(2, _a);
}

_b = "";
for (_a = 0; _a < 8; ++_a) {
  //0x
  boolInt |= parseInt("1" + _b, 16);
  boolInt |= parseInt("2" + _b, 16);

  if (_a < 7) {
    boolInt |= parseInt("4" + _b, 16);
    boolInt |= parseInt("8" + _b, 16);
  }
  _b += "0";

}

_b = 1;
for (_a = 0; _a < 30; ++_a) {
  boolInt |= _b;
  _b = _b * 2;
}

for (_a = 0; _a < 30; ++_a) {
  boolInt |= bitMaskArr[_a];
}

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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 by picocreator on 20th January 2013
• Revision 2: published by picocreator on 23rd January 2013
• Revision 3: published by picocreator on 5th February 2013

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