On Saturday, 3 August 2019 at 17:44:44 UTC, lithium iodate wrote:
On Saturday, 3 August 2019 at 16:35:34 UTC, Giovanni Di Maria
First off you could try to use a faster RNG engine than the
default. The easiest way is to define a variable containing it
and passing it to the functions each time.
auto rng = Xorshift(1234);
randomNumber = uniform!uint(rng);
This basic change approximately halved the 5 seconds your
original example needs on my computer.
Another simple approach that I have tried is simply hashing the
iterator using a fast hash function.
With xxHash32 I got the time down to 0.25 seconds. I also tried
xxHash64 and FNV1a but they were not faster in my quick test.
Thank you very much Lithium Iodate
Now i will try it.
I let know you.