Is it possible to write template interfaces in D?



I am making this question because the compiler accepts the following code:

interface Foo (T)
{
public:
    void do_something ();
}

class Bar(T) : Foo
{                         // <-- this is line 8
    void do_something ( ) { }
}

//-----------------------------



but if I append the main function:

int main ()
{
    Bar!(int) b = new Bar!(int);

    return 0;
}
//-----------------------------------------

the compiler returns this error:

dmd -c iface.d
iface.d(8): template Foo(T) is used as a type
iface.d(8): class Bar base type must be class or interface, not void


Thanks

Bruno.
~

Bruno A. Costa wrote:
> Is it possible to write template interfaces in D?
> 
> 
> 
> I am making this question because the compiler accepts the following code:
> 
> interface Foo (T)
> {
> public:
>     void do_something ();
> }
> 
> class Bar(T) : Foo
> {                         // <-- this is line 8
>     void do_something ( ) { }
> }
> 
> //-----------------------------
> 
> 
> 
> but if I append the main function:
> 
> int main ()
> {
>     Bar!(int) b = new Bar!(int);
>                                                                                                                                  return 0;
> }
> //-----------------------------------------
> 
> the compiler returns this error:
> 
> dmd -c iface.d
> iface.d(8): template Foo(T) is used as a type
> iface.d(8): class Bar base type must be class or interface, not void

Try this:

class Bar(T) : Foo!(T)
{
...


Hauke

Hauke Duden wrote:

> Bruno A. Costa wrote:
>> Is it possible to write template interfaces in D?
>> 
>> 
>> 

> 
> Try this:
> 
> class Bar(T) : Foo!(T)
> {
> ...
> 
> 
> Hauke

Ok, it worked :)  Thanks.

Bruno.