VStudio9 and template member functions

[riccardo.gherardi]

Hello.
The code below results in a linker error when compiled with Visual
Studio 2008, v9.0.21022.8 RTM.
The problem disappears when Foo::Bar implementation is moved to the
header file.
I've read the relevant template FAQs suggesting to never separate
definition and declaration of template member functions, but they deal
with code that fails to compile.
It's a sintax issue (and therefore my fault) or a compiler quirk?
Thanks in advance, R

// --- foo.h ---

class Foo
{
public:
template<class T> int Bar(int);
};

// --- foo.cpp ---

#include "foo.h"
template<class T> int Foo::Bar(int)
{
return 0;
}

// --- main.cpp ---

#include "foo.h"
int main()
{
Foo f;
int x = f.Bar<double>(3);
}

 

[riccardo.gherardi]

http://www.parashift.com/c++-faq-lite/templates.html#faq-35.12

Thanks.
The referenced solution, telling the compiler what code to generate,
works.
In the aforementioned case, it means adding the following line to
foo.cpp.

template int Foo::Bar<double>(int);

Now I just have to manually keep track of the instantiation I wish to
use... :b R

 

[james.fysh]

Thanks.
The referenced solution, telling the compiler what code to generate,
works.
In the aforementioned case, it means adding the following line to
foo.cpp.

    template int Foo::Bar<double>(int);

Now I just have to manually keep track of the instantiation I wish to
use... :b R

Or you could just define the functionality inside the header file, so
you don't have to explicitly declare each type you want to use.

 

[anon]

Or you could just define the functionality inside the header file, so
you don't have to explicitly declare each type you want to use.

Or include the cpp file