Ali Çehreli:
That is a VLA.
That are currently not present in D. The most common and safe
alternatives in D are allocating the memory on the heap with
'new', or over-allocating on the stack a fixed size and then
slicing.
If the OP really wants to allocate on the stack, there is the
alloca() function (untested, I don't remember the correct name
for the memory error):
auto ptr = cast(int*)alloca(num * 2 * int.sizeof);
if (ptr == null)
throw new outOfMemoryError("...");
auto array = ptr[0 .. num * 2];
Bye,
bearophile
