problem declaring template

[desktop]

When I try to compile this template:

template <typename T>
class ElementT<std::vector<T> > {
public:
typedef T Type;
};

I get the error:

main.cpp:11: error: ‘ElementT’ is not a template
make: *** [main.o] Error 1


What is causing this error?

 

[Zeppe]

When I try to compile this template:

template <typename T>
class ElementT<std::vector<T> > {
public:
typedef T Type;
};

I get the error:

main.cpp:11: error: ‘ElementT’ is not a template
make: *** [main.o] Error 1


What is causing this error?

What is std::vector<T>? What are you trying to do?
The correct template declaration is:

template <typename T>
class ElementT{
public:
typedef T Type;
};

Regards,

Zeppe

 

[desktop]

When I try to compile this template:

template <typename T>
class ElementT<std::vector<T> > {
public:
typedef T Type;
};

I get the error:

main.cpp:11: error: ‘ElementT’ is not a template
make: *** [main.o] Error 1


What is causing this error?

What is std::vector<T>? What are you trying to do?
The correct template declaration is:

template <typename T>
class ElementT{
public:
typedef T Type;
};

Regards,

Zeppe

It works if I first type:


template <typename T>
class ElementT;


and then the partial specialization:

template <typename T>
class ElementT<std::vector<T> > {
public:
typedef T Type;
};


It seems that when doing partial specialization you first need to define
the class as a template.

 

[Zeppe]

It works if I first type:


template <typename T>
class ElementT;


and then the partial specialization:

template <typename T>
class ElementT<std::vector<T> > {
public:
typedef T Type;
};


It seems that when doing partial specialization you first need to define
the class as a template.

Oh, so you wanted to do a template specialization! If you think about
that, it's quite reasonable that you have to define something before
specializing it, isn't it?

Regards,

Zeppe

 

[Sylvester Hesp]

When I try to compile this template:

template <typename T>
class ElementT<std::vector<T> > {
public:
typedef T Type; };

I get the error:

main.cpp:11: error: ‘ElementT’ is not a template
make: *** [main.o] Error 1


What is causing this error?

What is std::vector<T>? What are you trying to do?
The correct template declaration is:

template <typename T>
class ElementT{
public:
typedef T Type;
};

Regards,

Zeppe

It works if I first type:


template <typename T>
class ElementT;


and then the partial specialization:

template <typename T>
class ElementT<std::vector<T> > {
public:
typedef T Type; };


It seems that when doing partial specialization you first need to define
the class as a template.

That is correct, although you have "definition" and "declaration" mixed up.
You are trying to *define* a partial specialization without first
*declaring* the general template, which is an error.

- Sylvester Hesp