c++ - Instantiation of template member function

In Class.h:

class Class {

public:
    template  void function(T value);
};

In Class.cpp:

template void Class::function(T value) {
    // do sth
}

In main.cpp:

#include "Class.h"

int main(int argc, char ** argv) {
    Class a;
    a.function(1);
    return 0;

}

I get a linked error because Class.cpp never instantiate void Class::function(T).
You can explicitly instantiate a template class with :

template class std::vector;

How do you explicitly instantiate a template member of a non-template class ?

Thanks,

Answer

You can use the following syntax in Class.cpp:

template void Class::function(int);

The template argument can be omitted because of type deduction, which works for function templates. Thus, the above is equivalent to the following, just more concise:

template void Class::function(int);

Notice, that it is not necessary to specify the names of the function parameters - they are not part of a function's (or function template's) signature.