function caching

JavaScript performance comparison

Revision 5 of this test case created by Klaus

Preparation code

 
<script>
Benchmark.prototype.setup = function() {
    var a;
    function d() {
      return[1, 2, 3, 4].map(function(b, c) {
        return b + c
      })
    }
    function e() {
      return[1, 2, 3, 4].map(a || (a = function(b, c) {
        return b + c
      }))
    }
};
</script>

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no cache
d();
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caching
e();
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