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Function std.datetime.stopwatch.benchmark

Benchmarks code for speed assessment and comparison.

Duration[fun.length] benchmark(fun...) (
  uint n


fun aliases of callable objects (e.g. function names). Each callable object should take no arguments.
n The number of times each function is to be executed.


The amount of time (as a Duration) that it took to call each function n times. The first value is the length of time that it took to call fun[0] n times. The second value is the length of time it took to call fun[1] n times. Etc.


import std.conv : to;

int a;
void f0() {}
void f1() { auto b = a; }
void f2() { auto b = to!string(a); }
auto r = benchmark!(f0, f1, f2)(10_000);
Duration f0Result = r[0]; // time f0 took to run 10,000 times
Duration f1Result = r[1]; // time f1 took to run 10,000 times
Duration f2Result = r[2]; // time f2 took to run 10,000 times


Jonathan M Davis and Kato Shoichi


Boost License 1.0.