"Meta" wrote in message news:szrhmjrinsymyihem...@forum.dlang.org...
Now how about this one: alias Unshared(T: shared U, U) = U; pragma(msg, Unshared!(shared const int)); //Prints const(int) Does the `:` denote subtyping as well, or equality? I'm sure that
Neither. IIRC it's something close to type implicit conversion rules. alias A(T : long) = T; pragma(msg, A!int);
in this case it's the latter, which makes me more strongly suspect that `is(T == shared U, U)` not working is a bug.
Probably. It looks like that matches only shared(U) and not const(shared(U)), so it could be intentional that it means exactly shared. I would guess it's an oversight.
Furthermore, I'm starting to get very confused: enum sameTypes(T, U) = is(T: U) && is(U: T); assert(sameTypes!(const int, immutable int)); //Ok, wtf? assert(sameTypes!(int, immutable int); //Ok, wtf?
All of those types implicitly convert to each other.
