Good project: stride() with constant stride value

[Andrei Alexandrescu via Digitalmars-d]

Currently we have a very useful stride() function that allows spanning a 
random access range with a specified step, e.g. 0, 3, 6, 9, ... for step 3.

I've run some measurements recently and it turns out a 
compile-time-known stride is a lot faster than a variable. So I was 
thinking to improve Stride(R) to take an additional parameter: Stride(R, 
size_t step = 0). If step is 0, then use a runtime-valued stride as 
until now. If nonzero, Stride should use that compile-time step.

Takers?


Andrei