void main()

{

    import std.datetime.stopwatch : benchmark;

    import std.math, std.parallelism, std.stdio;

​

    auto logs = new double[100_000];

    auto bm = benchmark!({

        foreach (i, ref elem; logs)

            elem = log(1.0 + i);

    }, {

        foreach (i, ref elem; logs.parallel)

            elem = log(1.0 + i);

    })(100); // number of executions of each tested function

    writefln("Linear init: %s msecs", bm[0].total!"msecs");

    writefln("Parallel init: %s msecs", bm[1].total!"msecs");

}

​