VStudio9 and template member functions

[riccardo.gherardi@gmail.com]

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 Tint Bar(int);
};

// --- foo.cpp ---

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

// --- main.cpp ---

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

[riccardo.gherardi@gmail.com]

Re: VStudio9 and template member functions

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@gmail.com]

Re: VStudio9 and template member functions

On Aug 18, 4:55 am, "riccardo.ghera ...@gmail.com"
<riccardo.ghera ...@gmail.comwr ote:

http://www.parashift.com/c++-faq-lit...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

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]

Re: VStudio9 and template member functions

james.fysh@gmai l.com wrote:

On Aug 18, 4:55 am, "riccardo.ghera ...@gmail.com"
<riccardo.ghera ...@gmail.comwr ote:

>>http://www.parashift.com/c++-faq-lit...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

>
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