Completing C code with D style

[forkit]

On Wednesday, 10 November 2021 at 04:54:58 UTC, Stanislav Blinov 
wrote:
> On Tuesday, 9 November 2021 at 11:03:09 UTC, forkit wrote:
>
>> They both produce exactly the same output.
>
> But do vastly different things.
>
>> But I tell ya.. the cognitive load .. well.. it increased 
>> dramatically ;-)
>
> Of course it did. Cuz you overthunk it. Dramatically.
>
> Your D version allocates memory, for no good reason. I mean, to 
> store results, but you already have storage for them, so kinda 
> pointless. Your C version, OTOH, stores results on stack (so 
> again, why did you allocate for them in D?..), but allocates 
> some "string builder" for... what, exactly?
>
> The program is filter, or sort + partition. Requires 0 
> allocations in C or D.

And.. in any case, the take away from this thread should not be 
about nonallocating coding, but rather the interesting comment 
from the originl op..

"Wow! your code seem so nice, I like it although I don't know how 
exactly it works."