Multiple-File Template Implementation

Question

With normal functions, the declaration and definition are often separated across multiple files like so:

// Foo.h

namespace Foo
{
    void Bar();
}

Answer 1

I'm disappointed that no answers mentioned that the C++ standard permits you to separate the definition from the declaration. It goes like this:

// Foo.h
export template T f();

 

// Foo.cpp
#include "Foo.h"

export template T f()
{
    // blah blah
}

Unfortunately, almost no compilers support export. Comeau is one that does.

However, export is removed from C++ in C++0x.