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fix tuple constructor

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bolero-MURAKAMI 2012-04-10 02:36:49 +09:00
parent aa4fc785b0
commit e6bfb69be9
1 changed files with 53 additions and 3 deletions
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56
sprout/tuple/tuple.hpp
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@ -195,8 +195,45 @@ namespace sprout {
return *this;
}
};
template<bool Cond, typename... Tail>
struct and_impl
: public std::false_type
{};
template<typename... Tail>
struct and_impl<true, Tail...>
: public std::integral_constant<bool, sprout::tuples::detail::and_impl<Tail...>::value>
{};
template<typename Head, typename... Tail>
struct and_
: public sprout::tuples::detail::and_impl<Head::value, Tail...>
{};
} // namespace detail
template<typename... Types>
class tuple;
//
// is_tuple
//
template<typename T>
struct is_tuple
: public std::false_type
{};
template<typename T>
struct is_tuple<T const>
: public sprout::tuples::is_tuple<T>
{};
template<typename T>
struct is_tuple<T const volatile>
: public sprout::tuples::is_tuple<T>
{};
template<typename... Types>
struct is_tuple<sprout::tuples::tuple<Types...> >
: public std::true_type
{};
//
// tuple
//
@ -214,9 +251,22 @@ namespace sprout {
SPROUT_CONSTEXPR explicit tuple(Types const&... elements)
: inherited_type(elements...)
{}
template<typename... UTypes>
SPROUT_CONSTEXPR explicit tuple(UTypes&&... elements)
: inherited_type(sprout::forward<UTypes>(elements)...)
template<
typename U,
typename = typename std::enable_if<
!sprout::tuples::is_tuple<typename std::remove_reference<U>::type>::value
>::type
>
SPROUT_CONSTEXPR explicit tuple(U&& elem)
: inherited_type(sprout::forward<U>(elem))
{}
template<
typename U1,
typename U2,
typename... UTypes
>
SPROUT_CONSTEXPR explicit tuple(U1&& elem1, U2&& elem2, UTypes&&... elements)
: inherited_type(sprout::forward<U1>(elem1), sprout::forward<U2>(elem2), sprout::forward<UTypes>(elements)...)
{}
SPROUT_CONSTEXPR tuple(tuple const&) = default;
SPROUT_CONSTEXPR tuple(tuple&&) = default;