How to compare two types? Will I use T.stringof instead of this?

void main()
{
	if(One is Two) {} //Error: type One is not an expression
                          //Error: type Two is not an expression
}

class One {}
class Two {}

Regards,
MarisaLovesUsAll

There's two ways:

static if(is(One == Two)) {

}


That compares the static types in a form of conditional compilation. http://dlang.org/expression.html#IsExpression

If you want to compare the runtime type of a class object, you can do:

if(typeid(obj_one) == typeid(obj_two))

that should tell you if they are the same dynamic class type.

Adam D. Ruppe:

> If you want to compare the runtime type of a class object, you can do:
>
> if(typeid(obj_one) == typeid(obj_two))
>
> that should tell you if they are the same dynamic class type.

And what about:

if (is(typeof(obj_one) == typeof(obj_two)))

Bye,
bearophile

On Sunday, 31 August 2014 at 23:53:31 UTC, bearophile wrote:
> if (is(typeof(obj_one) == typeof(obj_two)))

You could, but since it is static info you might as well use static if.

typeof() always gets the static type, typeid() is needed if you
want the dynamic type.

Thanks for the answers!