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> --- Begin Message ---
>
>
>
> Subject: 
>
> Template problem
>
>
>
>
> Date: 
>
> Mon, 02 Jul 2007 07:41:57 -0700
>
>
>
>
> User-agent: 
>
> G2/1.0
>
>
>
>
> Hi,
>
> I am trying to create a wrapper class for hash_sets. I would like to
> use templates for the type of data that is stored in the hash_set, but
> I get a strange compiler error. Everything works, if I don't use
> templates. But with templates I get with g++ 4.1.2:
>
> ../TWTHashSet.h:42: error: type '__gnu_cxx::hash_set<PointerTemplate*,
> CTWTHashSet<PointerTemplate>::pointerHashFunction,
> CTWTHashSet<PointerTemplate>::pointerEquality,
> std::allocator<PointerTemplate*> >' is not derived from type
> 'CTWTHashSet<PointerTemplate>'
> ../TWTHashSet.h:42: error: expected ';' before 'hash_setIterator'
>
>
>
> I do not understand the error message. Could someone explain, what I
> am doing wrong, or how I can solve that problem?
>
>
> Thank you very much,
> Benjamin Bihler
>
>
>
>
> Source code:
>
>
>
> TWTHashSet.cpp:
>
> #include "TWTHashSet.h"
>
> template< class PointerTemplate >
>
> CTWTHashSet< PointerTemplate >::CTWTHashSet()
> {
> }
>
> template< class PointerTemplate >
>
> CTWTHashSet< PointerTemplate >::~CTWTHashSet()
> {}
>
>
>
>
> TWTHashSet.h:
>
> #ifndef TWTHASHSET_H_
> #define TWTHASHSET_H_
>
> #include <ext/hash_set>
>
> template< class PointerTemplate >
>
>
> class CTWTHashSet
> {
>
> public:
>
>     CTWTHashSet();
>     ~CTWTHashSet();
>     class pointerEquality;
>     class pointerHashFunction;
>
>
>     class pointerEquality
>     {
>     public:
>
>         bool operator()(const PointerTemplate *s1, const
> PointerTemplate *s2) const
>         {
>             return (s1 == s2);
>         }
>     };
>
>     class pointerHashFunction
>     {
>     public:
>
>         size_t
>         operator()(const PointerTemplate *__x) const
>         {
>             return ( size_t )__x;
>         }
>     };
>
>     __gnu_cxx::hash_set< PointerTemplate*, pointerHashFunction,
> pointerEquality, std::allocator< PointerTemplate* > > hsDreieckSet;
>     __gnu_cxx::hash_set< PointerTemplate*, pointerHashFunction,
> pointerEquality, std::allocator< PointerTemplate* > >::iterator
> hash_setIterator;
>
>
>
> };
>
> #endif /*TWTHASHSET_H_*/
>
>
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