C++11: Template Function Specialization for Integer Types

Question

Suppose I have a template function:

template
void f(T t)
{
    ...
}

and I want to write a specialization for all primiti

Answer 1

You can use a helper template that you can specialize like this:

#include 
#include 
#include 

template ::value>
struct Foo {
        static void bar(const T& t) { std::cout << "generic: " << t << "\n"; }
};
template 
struct Foo {
        static void bar(const T& t) { std::cout << "integral: " << t << "\n"; }
};

template 
static void bar(const T& t) {
        return Foo::bar(t);
}

int main() {
        std::string s = "string";
        bar(s);
        int i = 42;
        bar(i);
        return 0;
}

output:

generic: string
integral: 42