Passing this to void *

[Tim Hsu]

On Wednesday, 22 November 2017 at 15:36:22 UTC, Adam D. Ruppe 
wrote:
> On Wednesday, 22 November 2017 at 15:31:36 UTC, Tim Hsu wrote:
>> It seems in D, reference has its own address, am I right? 
>> unlike c++
>
> The local variable does have its own address. Do not take its 
> address - avoid &this or &object.
>
> Just cast the ref itself.
>
>
> In D, a class this or Object variable is already like a C++ 
> Foo*. If you & that, you get a Foo** - not what you want in 
> most cases.

Thanks after doing some experiment I guess I finally understand
class App {
     @property void *ptr() {
         return cast(void *)(this);
     }
}
void printaddr(void *ptr)
{
   writeln(ptr);
}
void main()
{
     Pizza pza = new Pizza("XD");
     Pizza pza2 = pza;
     printaddr(pza.ptr);
     printaddr(pza2.ptr);
     printaddr(&pza);
     printaddr(&pza2);
}

Result:
A32000
A32000
19FDB0
19FDB4


Conclusion:
pza and pza2 is two different reference variable refer to same 
new-ed object.