Re: PSound updates

[Christian Reiniger <warewolf@mayn.de>]

pcburns@zip.com.au wrote:

>No its like this.
>
>class A
>{
>..
>
>   virtual T* Get() const;
>..
>}
>
>class B : public A
>{
>..
>   virtual const T* Get() const;
>..
>};
>
>The functions differ only by the type returned. You can't do that.

No it's not.

it's like this:

template <class E> class A
{
// ... 
  virtual E Get () const;
};

template <class Q> class B : public A<const Q>
{
// ...
  virtual const Q Get () const;
};


If you instantiate B with, say, type Directory, then you get:

class B : public A<const Directory>
{
//...
  virtual const Directory Get () const;
};

which is derived from

class A
{
// ...
  virtual const Directory Get () const;
};

The template parameter for class A is in this case "const Directory", which
means that the Get () method has a return type of "const Directory".

VC++ 5 doesn't seem to get this - it treats the "const" part of the
template parameter as something seperate, and thus everything gets messed
up.

>Is there another bug to do with using a const template type? 

I'm pretty sure we all refer to the same one.


	Christian
-- 

Drink wet cement. Get stoned.