On 29/11/2016 3:35 AM, Namespace wrote:
We have a handy dandy syntax for this:
if (MyClassInt subclass = cast(MyClassInt)value) {
writeln(subclass.value);
}
If it doesn't cast to said type (it will be null) that branch won't
execute.
Just out of interest: it looks like a dynamic_cast in C++ which is
considered as slow operation. Is that D cast also a dynamic cast and
also slow? I've never used it, so I'm a bit curious.
I wouldn't worry about it. You're already using classes and they are dog
slow in general.