homogeneous array vs heterogeneous array

JavaScript performance comparison

Test case created by Georgii

Preparation code

Benchmark.prototype.setup = function() {
    var a = [0,1,2,3,4,5,6,7,8,9],
        b = [0, {}, 2.0, -0, 4.01, 5, [], 7, 8, 9];

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Testing in unknown unknown
Test Ops/sec
homogeneous array
for (value in a) {}
heterogeneous array
for (value in b) {}

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