just a few small questions

[MM]

>
>  module whatever;
>  private {
>    struct info
>    {
>      uint x,y,z;
>    }
>
>    info[500][500] a;
>  }
>
>This should allocate the array of structs on the heap in a non-GC manner.
>
>One major difference from C arrays is that the indexes are *used* in the  
>reverse order from C. Meaning that in C one would write ...
>
>    item = a[X][Y];
>
>but in D one writes ...
>
>    item = a[Y][X];
>
>-- 
>Derek Parnell
>Melbourne, Australia

Thx, just one more question...
I need to read alot of blocks(rectangles if seen as a plane) out of it like.
Is this way then the fastest implementaion?
And how much can I take from the heap without problems?