Simple performance question from a newcomer

[jmh530 via Digitalmars-d-learn]

On Sunday, 21 February 2016 at 14:32:15 UTC, dextorious wrote:
>
> Now, seeing as how my experience writing D is literally a few 
> hours, is there anything I did blatantly wrong? Did I miss any 
> optimizations? Most importantly, can the elegant operator 
> chaining style be generally made as fast as the explicit loops 
> we've all been writing for decades?

I didn't look at your code that thoroughly, but it is generally 
recommended that if you're concerned about performance to compile 
with gdc or ldc. dmd has fast compile times, but does not produce 
as fast of code. You might want to check if the performance 
differential is still large with one of those.