Is there a way to tell D to rearrange struct members or to not rearrange class members?

[WraithGlade]

Thanks for responding to my question and for your time, etc.

I was aware of `align` but as far as I am aware it is orthogonal 
to what I'm asking about. The Andrei book says that D 
automatically rearranges members of `class`s in memory to avoid 
wasting memory due to padding between members whose width is less 
than the native CPU word size alignment, whereas `struct`s are 
left as is (meaning the members aren't reordered for alignment 
padding optimization).

The `align` command specifies alignments but doesn't seem 
relevant to automatic rearranging of members for classes.

I'm not sure if D does that or not anymore, since (as you said) 
it has been a long while since that book was published.