Mike L. wrote:
If the compiler can tell that B!(int) is a type, why can't it tell that it is a child class of A!(int) ?
This is a bug. In template specializations, : means equality. In static if, : means convertibility.
So, you can use:
template ADefaults(Type, AType)
{
static assert (is (AType : A!(Type)));
Type blah()
{ return Type.init; }
}
http://d.puremagic.com/issues/show_bug.cgi?id=1715 if you want to vote.
