Building a string from n chars

["Nordlöw" via Digitalmars-d-learn]

On Wednesday, 3 September 2014 at 20:20:09 UTC, Meta wrote:
> Does this work?
>
> s ~= "*".replicate(n);

Yes, thanks.

So what's best?

     type ~= '*'.repeat(pointerCount).array;

or

     type ~= "*".replicate(pointerCount);

?

Further, -vgc says only ~= will allocate:

t_repeat_replicate.d(12,19): vgc: operator ~= may cause GC 
allocation
t_repeat_replicate.d(13,19): vgc: operator ~= may cause GC 
allocation

Is DMD/Phobos already that clever!?

:=)