Completing C code with D style

[Stanislav Blinov]

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.