Pointer to member variable again

[ws]

Simen Kjaeraas Wrote:

> On Tue, 29 Jul 2008 07:33:51 +0200, ws <wisiong at gmail.com> wrote:
> 
> > Maybe i should have written it this way:
> >
> > int function() fp;
> > int delegate() dp;
> > int *ptr;
> > class Cls
> > {
> >   int k;
> >   int foo()  { return k; }
> > }
> >
> > void main()
> > {
> >   fp = &Cls.foo;
> >   assert(fp() == 0);
> >
> >   Cls c = new Cls;
> >   dp = &c.foo;
> >   ptr = &c.k;
> > 	
> >   assert(is(typeof(ptr) == int*));
> >   assert(is(typeof(fp) == int function()));
> >   assert(is(typeof(dp) == int delegate()));
> > }
> >
> > Notice fp can be used without an instance of Cls.
> > What i need is actually a way to get the type of the class when i  
> > reference the variable k, without actually creating an instance of the  
> > class.
> > Something like this:
> >
> > typedef GetClass!(Cls.k) classType;
> > assert(is(typeof(classtype) == class) && is(typeof(classtype) == Cls));
> >
> > Is there a way to do it?
> 
> Have you tried calling fp in that example?
> 
> -- 
> Simen

Sorry the fp has to be called after Cls is instanstiated. Fixed as below:
 fp = &Cls.foo;
 Cls c = new Cls;
 assert(fp() == 0);  <-- after Cls instantiation.