how to Specializations of function Templates or Overloading Function templates with Templates ?

[recover]

#include <stdio.h>

template<class T>
class TpHello
{
public:
int GetHash(){return 0;}
protected:
private:
T a;
};

template<class T>
int HashKey(T key)
{
return (int)key;
}

//Specializations of function Templates or Overloading Function templates
template<class T>
int HashKey(TpHello<T> key)
{
return key.GetHash();
}

int main()
{
TpHello<int> tpInt;
HashKey(tpInt);
return 0;
}


compile error in VC6
--------------------Configuration: template - Win32
Debug--------------------
Compiling...
template.cpp
E:\work\hellotest\template.cpp(52) : error C2667: 'HashKey' : none of 2
overload have a best conversion
E:\work\hellotest\template.cpp(52) : error C2668: 'HashKey' : ambiguous call
to overloaded function
Error executing cl.exe.

template.exe - 2 error(s), 0 warning(s)

--
= = = = = = = = = = = = = = = = = = = = = =

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zhang
----------------------------
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[Victor Bazarov]

[..valid code redacted..]


compile error in VC6
[..]

Please, PLEASE, throw that compiler away. Get yourself something
decent. Luckily, there are several free ones available.

V

 

[recover]

Thanks.