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

Use SFINAE

// For all types except integral types:
template
typename std::enable_if::value>::type f(T t)
{
    // ...
}

// For integral types only:
template
typename std::enable_if::value>::type f(T t)
{
    // ...
}

Note that you will have to include the full std::enable_if return value even for the declaration.

C++17 update:

// For all types except integral types:
template
std::enable_if_t> f(T t)
{
    // ...
}

// For integral types only:
template
std::enable_if_t> f(T t)
{
    // ...
}