What's the point of static arrays ?

[psycha0s]

On Friday, 10 July 2020 at 10:13:23 UTC, wjoe wrote:
> However stack memory needs to be allocated at program start. I 
> don't see a huge benefit in allocation speed vs. heap 
> pre-allocation, or is there?
> I mean 1 allocation vs 2 isn't going to noticeably improve 
> overall performance.

Allocation on the stack is basically just a single processor 
instruction that moves the stack pointer (well, ofc you also need 
to initialize array elements). Meanwhile, allocation on the heap 
involves much more complex logic of the memory allocator. 
Moreover, in D dynamic arrays use GC, thus the memory allocation 
may involve the trash collection step.