Dennis Ritchie:
Anybody can write a packed array on the D? I once badly represent the means by which we can write a packed array. Maybe for this you should use core.simd or unions?
SIMD could be useful for some fancy bulk operations. But you should be able to write a good basic packed array without SIMD, perhaps about as nice as the Ada ones (D sometimes offers good enough tools to build what you need).
Posible use: PackedDynamicArray!6 pa; // On heap. PackedFixedArray!(6, 300) pfa; // On stack. Bye, bearophile