Re: [Boost-users] enable_if and multiple partial specializations

On 08/04/11 10:59, Gennadiy Rozental wrote:

Hi,

It's late and I might be missing something, but I can't figure out how can I use enable_if to disambiguate 2 partial specializations where one is subcase of another one:

#include #include #include

#include<iostream>

template struct M { static void foo() { std::cout<< "generic"<< std::endl; } };

template<typename T> struct M::type> { static void foo() { std::cout<< "scalar"<< std::endl; } };

template<typename T> struct M::type> { static void foo() { std::cout<< "enum"<< std::endl; } };

M<FOO>::foo() fails to compile due to ambiguity.

Any pointers? Or How to get what I want?

enum are scalar so : template<class T> struct M::type> { static void foo() { std::cout<< "enum"<< std::endl; } }; template<typename T> struct M::type> { static void foo() { std::cout<< "scalar"<< std::endl; } };