On 10/11/11, Gor Gyolchanyan <gor.f.gyolchan...@gmail.com> wrote: > Actually, the __traits(compiles, ...) is a marvelous and very powerful > tool that will allow you to test if the struct is fit for your > particular task by just specifying the task.
Yeah, but you have to write very specific code to test if it really is a compatible type. And even after all that hard work you could still easily pass a type that "walks like a duck" but that you know is actually incompatible. So then you have to write specific if(!is(T == IncompatibleType)), and this doesn't scale too well. This is why I resort to having an enum boolean as the first field of a struct that defines its "protocol", but I really see that as a poor-man's implementation of interfaces.
