Problem with multiple parameter templates and function overloading

[nyl2002]

I have written the following very short template class in testclass.h:

template<typena me C,typename T>
class TestClass {
public:
TestClass() {};
~TestClass();
private:
T testFunction(T dummy);
};

template<typena me C,typename T>
T TestClass<C,T>: :testFunction(T dummy)
{
C bla;
return dummy;

}

So far it compilates fine.
Now i want to overload the testFunction:

template<typena me C,typename T>
class TestClass {
public:
TestClass() {};
~TestClass();
private:
T testFunction(T dummy);
/* definition of overloaded function */
double testFunction(do uble dummy);
};

template<typena me C,typename T>
T TestClass<C,T>: :testFunction(T dummy)
{
C bla;
return dummy;

}

/* now comes the problematic part */

template<typena me C>
double TestClass<C,dou ble>::testFunct ion(double dummy)
{
C bla;
return dummy;
}

I get the following compiler error:

behavior/testclass.h:47: error: no `double TestClass<C,
double>::testFu nction(double)' member function declared in class `
TestClass<C, double>'
behavior/testclass.h:47: error: template definition of non-template
`double
TestClass<C, double>::testFu nction(double)'

If I remove the parameter C everything works fine of course.
Please can anybody help me.
I think its probably just a small problem.

[amparikh]

ny*****@hotmail .com wrote:

I have written the following very short template class in testclass.h:

template<typena me C,typename T>
class TestClass {
public:
TestClass() {};
~TestClass();
private:
T testFunction(T dummy);
};

template<typena me C,typename T>
T TestClass<C,T>: :testFunction(T dummy)
{
C bla;
return dummy;

}

So far it compilates fine.
Now i want to overload the testFunction:

template<typena me C,typename T>
class TestClass {
public:
TestClass() {};
~TestClass();
private:
T testFunction(T dummy);
/* definition of overloaded function */
double testFunction(do uble dummy);
};

template<typena me C,typename T>
T TestClass<C,T>: :testFunction(T dummy)
{
C bla;
return dummy;

}

/* now comes the problematic part */

template<typena me C>
double TestClass<C,dou ble>::testFunct ion(double dummy)
{
C bla;
return dummy;
}

Your testFunction is not a template function. I am not quite sure what
you are trying to do, but the bottom line is you have a template class.

So, if you want to have a specialized testfunction implementation for
double, then first specialize the template class TestClass for double
and then have an implementation for that.

Look up partial specialization (function templates cannot support them)
something like this...

template<typena me C>
class TestClass<C, double>
{
public:
double testFunction(do uble dummy);
};

template<typena me C>
double TestClass<C,dou ble>::testFunct ion(double dummy)
{
C bla;
return dummy;
}

>
I get the following compiler error:

behavior/testclass.h:47: error: no `double TestClass<C,
double>::testFu nction(double)' member function declared in class `
TestClass<C, double>'
behavior/testclass.h:47: error: template definition of non-template
`double
TestClass<C, double>::testFu nction(double)'

If I remove the parameter C everything works fine of course.
Please can anybody help me.
I think its probably just a small problem.