Re: [C++] Templates and inheritance

From: Alwyn (dt015a1979_at_mac.com.invalid)
Date: 09/28/04 

Date: Tue, 28 Sep 2004 22:58:59 +0100

In article <slrncljmco.usv.hexkid@ID-203069.user.uni-berlin.de>, Pedro
Graca <hexkid@hotpop.com> wrote:

> Alwyn wrote:
> > In article <slrncliuer.usv.hexkid@ID-203069.user.uni-berlin.de>, Pedro
> > Graca <hexkid@hotpop.com> wrote:
>
> ========
> I'm now trying to make a
>
> InheritedStack<foo> bar; // :-)
>
> where foo is a class of my own ...
>
> I'm getting a lot of errors, especially with
> operator overloading (for > and <<), but I will
> wait a week or so for my books before showing
> my newbieness :-)

On the whole, it is not a good idea to inherit from STL classes. They
are not designed for that. I would rather write:

template <class T>
class Stack
{
   std::stack<T> theStack;
public:
   bool empty() const {
      return theStack.empty();
   }
   size_t size() const {
      return theStack.size();
   }
   void push(const T &);
   // etc etc.
};

although it is a pain, I admit.

As far as the operators '<' and '<<' are concerned, have you defined
them for your class? You may need to do this.

Alwyn

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