#ifndef CHILON_NONE_HPP

#define CHILON_NONE_HPP

namespace chilon {

namespace detail {

template <bool Answer = false>

struct none {

    template <class T>

    bool operator==(T const& t) const { return Answer; }

    template <class T>

    bool operator!=(T const& t) const { return Answer; }

#ifdef __GXX_EXPERIMENTAL_CXX0X__

    template <class... T>

    bool test(T const&... in) const { return Answer; }

#else

    template <class T>

    bool test(T const& in) const { return Answer; }

#endif

};

}; // end detail namespace

struct none : detail::none<> {

    typedef none value_type;

#ifdef __GXX_EXPERIMENTAL_CXX0X__

    template <class... T>

    none(T const&... in) {}

#else

    template <class T>

    none(T const& in) {}

#endif

};

struct none_true : detail::none<true> {

    typedef none_true value_type;

#ifdef __GXX_EXPERIMENTAL_CXX0X__

    template <class... T>

    none_true(T const&... in) {}

#else

    template <class T>

    none(T const& in) {}

#endif

};

}

#endif