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Sprout/sprout/tuple/tuple.hpp

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sprout/tuple.hpp 追加
2011-10-30 14:10:24 +00:00
#ifndef SPROUT_TUPLE_TUPLE_HPP
#define SPROUT_TUPLE_TUPLE_HPP
#include <cstddef>
#include <utility>
#include <type_traits>
#include <tuple>
#include <sprout/config.hpp>
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#include <sprout/utility/operation.hpp>
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namespace sprout {
namespace tuples {
namespace detail {
template<std::size_t Index, typename Head, bool IsEmpty>
class head_base;
template<std::size_t Index, typename Head>
class head_base<Index, Head, true>
: public Head
{
public:
static SPROUT_CONSTEXPR Head& head(head_base& t) SPROUT_NOEXCEPT {
return t;
}
static SPROUT_CONSTEXPR Head const& head(head_base const& t) SPROUT_NOEXCEPT {
return t;
}
public:
SPROUT_CONSTEXPR head_base()
: Head()
{}
SPROUT_CONSTEXPR head_base(Head const& v)
: Head(v)
{}
template<typename UHead>
SPROUT_CONSTEXPR head_base(UHead&& v)
: Head(sprout::forward<UHead>(v))
{}
};
template<std::size_t Index, typename Head>
class head_base<Index, Head, false> {
public:
static SPROUT_CONSTEXPR Head& head(head_base& t) SPROUT_NOEXCEPT {
return t.head_;
}
static SPROUT_CONSTEXPR Head const& head(head_base const& t) SPROUT_NOEXCEPT {
return t.head_;
}
private:
Head head_;
public:
SPROUT_CONSTEXPR head_base()
: head_()
{}
SPROUT_CONSTEXPR head_base(Head const& v)
: head_(v)
{}
template<typename UHead>
SPROUT_CONSTEXPR head_base(UHead&& v)
: head_(sprout::forward<UHead>(v))
{}
};
template<std::size_t Index, typename... Types>
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class tuple_impl;
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template<std::size_t Index>
class tuple_impl<Index> {
public:
template<std::size_t, typename...>
friend class sprout::tuples::detail::tuple_impl;
protected:
void swap(tuple_impl&) SPROUT_NOEXCEPT {}
public:
tuple_impl() = default;
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template<typename... UTypes>
add ptr_fun, mem_fun, mem_fun_ref
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explicit SPROUT_CONSTEXPR tuple_impl(UTypes&&... args) SPROUT_NOEXCEPT {}
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SPROUT_CONSTEXPR tuple_impl(tuple_impl const&) = default;
SPROUT_CONSTEXPR tuple_impl(tuple_impl&&) = default;
template<typename... UTypes>
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index, UTypes...> const& t) SPROUT_NOEXCEPT {}
template<typename... UTypes>
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index, UTypes...>&& t) SPROUT_NOEXCEPT {}
tuple_impl& operator=(tuple_impl const&) = default;
tuple_impl& operator=(tuple_impl&& t) = default;
template<typename... UTypes>
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index, UTypes...> const&) SPROUT_NOEXCEPT {
return *this;
}
template<typename... UTypes>
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index, UTypes...>&&) SPROUT_NOEXCEPT {
return *this;
}
sprout/tuple.hpp 追加
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};
template<std::size_t Index, typename Head, typename... Tail>
class tuple_impl<Index, Head, Tail...>
: public sprout::tuples::detail::tuple_impl<Index + 1, Tail...>
, private sprout::tuples::detail::head_base<Index, Head, std::is_empty<Head>::value>
{
public:
template<std::size_t, typename...>
friend class sprout::tuples::detail::tuple_impl;
public:
typedef sprout::tuples::detail::tuple_impl<Index + 1, Tail...> inherited_type;
typedef sprout::tuples::detail::head_base<Index, Head, std::is_empty<Head>::value> base_type;
public:
static SPROUT_CONSTEXPR Head& head(tuple_impl& t) SPROUT_NOEXCEPT {
return base_type::head(t);
}
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static SPROUT_CONSTEXPR Head const& head(tuple_impl const& t) SPROUT_NOEXCEPT {
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return base_type::head(t);
}
static SPROUT_CONSTEXPR inherited_type& tail(tuple_impl& t) SPROUT_NOEXCEPT {
return t;
}
static SPROUT_CONSTEXPR inherited_type const& tail(tuple_impl const& t) SPROUT_NOEXCEPT {
return t;
}
protected:
void swap(tuple_impl& t) SPROUT_NOEXCEPT_EXPR(
SPROUT_NOEXCEPT_EXPR(swap(std::declval<Head&>(), std::declval<Head&>()))
&& SPROUT_NOEXCEPT_EXPR(tail(t).swap(tail(t)))
)
{
using std::swap;
swap(head(*this), head(t));
inherited_type::swap(tail(t));
}
public:
SPROUT_CONSTEXPR tuple_impl()
: inherited_type()
, base_type()
{}
add ptr_fun, mem_fun, mem_fun_ref
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explicit SPROUT_CONSTEXPR tuple_impl(Head const& h, Tail const&... tail)
sprout/tuple.hpp 追加
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: inherited_type(tail...)
, base_type(h)
{}
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template<typename UHead, typename... UTail>
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explicit SPROUT_CONSTEXPR tuple_impl(UHead&& h, UTail&&... tail)
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: inherited_type(sprout::forward<UTail>(tail)...)
, base_type(sprout::forward<UHead>(h))
{}
SPROUT_CONSTEXPR tuple_impl(tuple_impl const&) = default;
SPROUT_CONSTEXPR tuple_impl(tuple_impl&& t)
SPROUT_NOEXCEPT_EXPR(std::is_nothrow_move_constructible<Head>::value && std::is_nothrow_move_constructible<inherited_type>::value)
sprout/utility/move.hpp 追加 tuple に要素数の異なるタプルからの暗黙の変換を追加
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: inherited_type(sprout::move(tail(t)))
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, base_type(sprout::forward<Head>(head(t)))
{}
template<typename... UTypes>
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index, UTypes...> const& t)
: inherited_type(sprout::tuples::detail::tuple_impl<Index, UTypes...>::tail(t))
, base_type(sprout::tuples::detail::tuple_impl<Index, UTypes...>::head(t))
{}
template<typename UHead, typename... UTail>
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index, UHead, UTail...>&& t)
sprout/utility/move.hpp 追加 tuple に要素数の異なるタプルからの暗黙の変換を追加
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: inherited_type(sprout::move(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>::tail(t)))
sprout/tuple.hpp 追加
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, base_type(sprout::forward<UHead>(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>::head(t)))
{}
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SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index> const& t)
: inherited_type()
, base_type()
{}
SPROUT_CONSTEXPR tuple_impl(tuple_impl<Index>&& t)
: inherited_type()
, base_type()
{}
sprout/tuple.hpp 追加
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tuple_impl& operator=(tuple_impl const& t) {
head(*this) = head(t);
tail(*this) = tail(t);
return *this;
}
tuple_impl& operator=(tuple_impl&& t)
SPROUT_NOEXCEPT_EXPR(std::is_nothrow_move_assignable<Head>::value && std::is_nothrow_move_assignable<inherited_type>::value)
{
head(*this) = sprout::forward<Head>(head(t));
sprout/utility/move.hpp 追加 tuple に要素数の異なるタプルからの暗黙の変換を追加
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tail(*this) = sprout::move(tail(t));
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return *this;
}
template<typename... UTypes>
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index, UTypes...> const& t) {
head(*this) = sprout::tuples::detail::tuple_impl<Index, UTypes...>::head(t);
tail(*this) = sprout::tuples::detail::tuple_impl<Index, UTypes...>::tail(t);
return *this;
}
template<typename UHead, typename... UTail>
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>&& t) {
head(*this) = sprout::forward<UHead>(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>::head(t));
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tail(*this) = sprout::move(sprout::tuples::detail::tuple_impl<Index, UHead, UTail...>::tail(t));
return *this;
}
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index> const& t) {
*this = sprout::move(tuple_impl());
return *this;
}
tuple_impl& operator=(sprout::tuples::detail::tuple_impl<Index>&& t) {
*this = sprout::move(tuple_impl());
sprout/tuple.hpp 追加
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return *this;
}
};
fix tuple constructor
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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...>
{};
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} // namespace detail
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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
{};
sprout/tuple.hpp 追加
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//
// tuple
//
sprout/variant/apply_visitor.hpp 追加
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template<typename... Types>
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class tuple
: public sprout::tuples::detail::tuple_impl<0, Types...>
{
public:
typedef sprout::tuples::detail::tuple_impl<0, Types...> inherited_type;
public:
// tuple construction
SPROUT_CONSTEXPR tuple()
: inherited_type()
{}
add ptr_fun, mem_fun, mem_fun_ref
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explicit SPROUT_CONSTEXPR tuple(Types const&... elements)
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: inherited_type(elements...)
{}
fix tuple constructor
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template<
typename U,
typename = typename std::enable_if<
!sprout::tuples::is_tuple<typename std::remove_reference<U>::type>::value
>::type
>
add ptr_fun, mem_fun, mem_fun_ref
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explicit SPROUT_CONSTEXPR tuple(U&& elem)
fix tuple constructor
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: inherited_type(sprout::forward<U>(elem))
{}
template<
typename U1,
typename U2,
typename... UTypes
>
add ptr_fun, mem_fun, mem_fun_ref
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explicit SPROUT_CONSTEXPR tuple(U1&& elem1, U2&& elem2, UTypes&&... elements)
fix tuple constructor
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: inherited_type(sprout::forward<U1>(elem1), sprout::forward<U2>(elem2), sprout::forward<UTypes>(elements)...)
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{}
sprout/darkroom/* 追加
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SPROUT_CONSTEXPR tuple(tuple const&) = default;
sprout/tuple.hpp 追加
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SPROUT_CONSTEXPR tuple(tuple&&) = default;
sprout/utility/move.hpp 追加 tuple に要素数の異なるタプルからの暗黙の変換を追加
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template<typename... UTypes>
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SPROUT_CONSTEXPR tuple(sprout::tuples::tuple<UTypes...> const& t)
: inherited_type(static_cast<sprout::tuples::detail::tuple_impl<0, UTypes...> const&>(t))
{}
sprout/utility/move.hpp 追加 tuple に要素数の異なるタプルからの暗黙の変換を追加
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template<typename... UTypes>
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SPROUT_CONSTEXPR tuple(sprout::tuples::tuple<UTypes...>&& t)
: inherited_type(static_cast<sprout::tuples::detail::tuple_impl<0, UTypes...>&&>(t))
{}
// tuple assignment
sprout/variant.hpp 追加 sprout/type.hpp 追加
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tuple& operator=(tuple const& rhs) {
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static_cast<inherited_type&>(*this) = rhs;
return *this;
}
tuple& operator=(tuple&& rhs) SPROUT_NOEXCEPT_EXPR(std::is_nothrow_move_assignable<inherited_type>::value) {
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static_cast<inherited_type&>(*this) = sprout::move(rhs);
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return *this;
}
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template<typename... UTypes>
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tuple& operator=(sprout::tuples::tuple<UTypes...> const& rhs) {
static_cast<inherited_type&>(*this) = rhs;
return *this;
}
sprout/utility/move.hpp 追加 tuple に要素数の異なるタプルからの暗黙の変換を追加
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template<typename... UTypes>
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tuple& operator=(sprout::tuples::tuple<UTypes...>&& rhs) {
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static_cast<inherited_type&>(*this) = sprout::move(rhs);
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return *this;
}
// tuple swap
sprout/variant.hpp 追加 sprout/type.hpp 追加
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void swap(tuple& other) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(inherited_type::swap(other))) {
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inherited_type::swap(other);
}
};
template<>
class tuple<> {
public:
// tuple swap
void swap(tuple&) SPROUT_NOEXCEPT {}
};
//
// ignore_t
//
struct ignore_t {
template<typename T>
ignore_t const& operator=(T const&) const {
return *this;
}
};
//
// ignore
//
static SPROUT_CONSTEXPR ignore_t ignore{};
//
// make_tuple
//
template<typename... Types>
fix inline add container/indexes.hpp add tuple/indexes.hpp
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inline SPROUT_CONSTEXPR sprout::tuples::tuple<typename std::decay<Types>::type...> make_tuple(Types&&... args) {
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return sprout::tuples::tuple<typename std::decay<Types>::type...>(sprout::forward<Types>(args)...);
}
//
// forward_as_tuple
//
template<typename... Types>
fix inline add container/indexes.hpp add tuple/indexes.hpp
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inline SPROUT_CONSTEXPR sprout::tuples::tuple<Types&&...> forward_as_tuple(Types&&... args) SPROUT_NOEXCEPT {
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return sprout::tuples::tuple<Types&&...>(sprout::forward<Types>(args)...);
}
//
// tie
//
template<typename... Types>
inline sprout::tuples::tuple<Types&...> tie(Types&... args) SPROUT_NOEXCEPT {
return sprout::tuples::tuple<Types&...>(args...);
}
sprout/tuple/sscrisk/cel/utility.hpp 追加
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//
// swap
//
template<typename... Types>
inline void swap(
sprout::tuples::tuple<Types...>& lhs,
sprout::tuples::tuple<Types...>& rhs
) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(lhs.swap(rhs)))
{
lhs.swap(rhs);
}
sprout/tuple.hpp 追加
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namespace detail {
template<std::size_t I, typename T>
struct tuple_element_impl;
template<typename Head, typename... Tail>
struct tuple_element_impl<0, sprout::tuples::tuple<Head, Tail...> > {
public:
typedef Head type;
};
template<std::size_t I, typename Head, typename... Tail>
struct tuple_element_impl<I, sprout::tuples::tuple<Head, Tail...> >
tuple/* 更新
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: public sprout::tuples::detail::tuple_element_impl<I - 1, sprout::tuples::tuple<Tail...> >
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{};
} // namespace detail
tuple/* 更新
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} // namespace tuples
using sprout::tuples::tuple;
using sprout::tuples::ignore;
using sprout::tuples::make_tuple;
using sprout::tuples::forward_as_tuple;
using sprout::tuples::tie;
sprout/tuple/sscrisk/cel/utility.hpp 追加
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using sprout::tuples::swap;
tuple/* 更新
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} // namespace sprout
namespace std {
//
// tuple_size
//
template<typename... Types>
struct tuple_size<sprout::tuples::tuple<Types...> >
: public std::integral_constant<std::size_t, sizeof...(Types)>
{};
//
// tuple_element
//
template<std::size_t I, typename... Types>
struct tuple_element<I, sprout::tuples::tuple<Types...> >
: public sprout::tuples::detail::tuple_element_impl<I, sprout::tuples::tuple<Types...> >
{};
} // namespace std
namespace sprout {
namespace tuples {
//
// tuple_size
//
template<typename T>
struct tuple_size
: public std::tuple_size<T>
{};
//
// tuple_element
//
template<std::size_t I, typename T>
struct tuple_element
: public std::tuple_element<I, T>
sprout/tuple.hpp 追加
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{};
tuple/* 更新
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//
// get
//
template<std::size_t I, typename T>
SPROUT_CONSTEXPR auto get(
T&& t
sprout/tuple/sscrisk/cel/utility.hpp 追加
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) SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(std::get<I>(sprout::forward<T>(t))))
-> decltype(std::get<I>(sprout::forward<T>(t)))
tuple/* 更新
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{
return std::get<I>(sprout::forward<T>(t));
}
sprout/tuple.hpp 追加
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//
// get
//
namespace detail {
template<std::size_t I, typename Head, typename... Tail>
SPROUT_CONSTEXPR typename std::add_lvalue_reference<Head>::type get_helper(
sprout::tuples::detail::tuple_impl<I, Head, Tail...>& t
) SPROUT_NOEXCEPT
{
return sprout::tuples::detail::tuple_impl<I, Head, Tail...>::head(t);
}
template<std::size_t I, typename Head, typename... Tail>
SPROUT_CONSTEXPR typename std::add_lvalue_reference<typename std::add_const<Head>::type>::type get_helper(
sprout::tuples::detail::tuple_impl<I, Head, Tail...> const& t
) SPROUT_NOEXCEPT
{
return sprout::tuples::detail::tuple_impl<I, Head, Tail...>::head(t);
}
} // namespace detail
template<std::size_t I, typename... Types>
SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, sprout::tuples::tuple<Types...> >::type& get(
tuple/* 更新
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sprout::tuples::tuple<Types...>& t
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) SPROUT_NOEXCEPT
{
return sprout::tuples::detail::get_helper<I>(t);
}
template<std::size_t I, typename... Types>
SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, sprout::tuples::tuple<Types...> >::type&& get(
tuple/* 更新
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sprout::tuples::tuple<Types...>&& t
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) SPROUT_NOEXCEPT
{
tuple/* 更新
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return sprout::forward<typename sprout::tuples::tuple_element<I, sprout::tuples::tuple<Types...> >::type&&>(
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sprout::tuples::get<I>(t)
);
}
template<std::size_t I, typename... Types>
SPROUT_CONSTEXPR typename sprout::tuples::tuple_element<I, sprout::tuples::tuple<Types...> >::type const& get(
tuple/* 更新
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sprout::tuples::tuple<Types...> const& t
sprout/tuple.hpp 追加
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) SPROUT_NOEXCEPT
{
return sprout::tuples::detail::get_helper<I>(t);
}
} // namespace tuples
using sprout::tuples::tuple_size;
using sprout::tuples::tuple_element;
using sprout::tuples::get;
} // namespace sprout
sprout/variant.hpp 追加 sprout/type.hpp 追加
2011-11-06 01:56:57 +00:00
#include <sprout/tuple/tuple_comparison.hpp>
sprout/tuple.hpp 追加
2011-10-30 14:10:24 +00:00
#endif // #ifndef SPROUT_TUPLE_TUPLE_HPP
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