faster splitter

[Andrei Alexandrescu via Digitalmars-d]

On 5/27/16 10:41 AM, Chris wrote:
> The improved `std find` comes very close to the manual function above
> now, sometimes it's even faster or at least as fast.

What you want to do here for indexed access is to match the last element 
first. If no match, continue etc. If there's a match, enter an inner 
loop where you don't need to check for the end of the haystack. -- Andrei