On Saturday, 30 January 2016 at 02:09:55 UTC, Steven
Schveighoffer wrote:
I figured out a way to have them. You just have to guarantee
you don't copy the actual "pointer" out of the struct:
https://forum.dlang.org/post/mk5k4l$s5r$1...@digitalmars.com
Unfortunately, that won't work for what I was trying to do. The
stuff I elided in the comments were more pointers to other Foo
instances, used to create a linked-list (of stack-allocated
objects); these would still break under the conditions Ali
described. I was only storing the this pointer so that blitted
objects could deduce where they came from (trying to turn the
post-blit constructor into a copy-constructor).
Thanks, though. I'm thinking that maybe D just can't express
these semantics without substantial overhead. While somewhat
disappointing (I came into D with stars in my eyes :)), it's not
enough by itself to make me go back to C++, at least not just
yet. Not when I can just use a few static ifs to do what
previously required careful template crafting that I wouldn't
understand 3 months later. On the other hand, I'm falling behind
on my library books since I no longer have any time for reading
during compilations ;).
