new T[size] vs .reserve

[Namespace]

On Saturday, 2 February 2013 at 22:39:58 UTC, monarch_dodra wrote:
> On Saturday, 2 February 2013 at 22:15:56 UTC, Namespace wrote:
>> My real question was: will we ever have fixed size arrays at 
>> runtime?
>
> I see no reason why we couldn't, the only problem is a syntax 
> one. If you beat the syntax (by wrapping it in a struct) then 
> you can do it no problem:
>
> //----
> T[N]* makeFixed(size_t N, T)()
> {
>     static struct Fixed
>     {
>         T[N] a;
>     }
>     auto p = new Fixed();
>     return &((*p).a);
> }
>
> void main()
> {
>    int[4]* p4 = makeFixed!(4, int)();
> }
> //----
>
> And there, a dynamically allocated fixed size array. I know 
> it's not pretty, but it proves the point.

Sure and as I said: something like that I'm using currently. It 
is very ugly and because of that I asked for a built in solution, 
like new ubyte[size].
C have also runtime fixed size arrays.
But as far as I can see all your are fine with the wrapped struct 
solution.