Measure Evaluation Timing

Measure the time taken by an evaluation.

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AbsoluteTiming[Total[Range[10000]]]

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Use RepeatedTiming to determine the average timing for an evaluation run repeatedly.

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RepeatedTiming[Total[Range[10000]]]

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Compare the average evaluation time of various methods of constructing arrays.

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funs = { Table[0, {i, #}, {j, #}] &, Map[Map[0 &, Range[#]], Range[#]] &, Scan[Scan[Sow[0], Range[#]], Range[#]] &, ConstantArray[0, {#, #}] &, Array[0 &, {#, #}] &, Outer[0 &, Range[#], Range[#]] & }; timings = First[ RepeatedTiming[#[100]]] & /@ funs;

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BarChart[timings, ChartLabels -> funs /. Function[head_[__]] :> head, PlotTheme -> "Marketing", ImageSize -> 500, ScalingFunctions -> "Log"]

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