Utilities

Collaboration diagram for Utilities:

Modules
	Function Objects
	Memory
	Metaprogramming
	Rational Arithmetic
	Time

Classes
struct	std::_Optional_base< _Tp, bool, bool >
struct	std::_Tuple_impl< _Idx, _Elements >
struct	std::_Tuple_impl< _Idx, _Head, _Tail...>
class	std::any
class	std::bad_any_cast
class	std::bad_optional_access
class	std::bitset< _Nb >
struct	std::nullopt_t
class	std::optional< _Tp >
struct	std::pair< _T1, _T2 >
struct	std::piecewise_construct_t
class	std::tuple< _Elements >
class	std::tuple< _T1, _T2 >
struct	std::tuple_element< 0, tuple< _Head, _Tail...> >
struct	std::tuple_element< __i, tuple< _Head, _Tail...> >
struct	std::tuple_element< __i, tuple<> >
struct	std::tuple_size< tuple< _Elements...> >
struct	std::type_index
struct	std::uses_allocator< tuple< _Types...>, _Alloc >

Macros
#define	__cpp_lib_addressof_constexpr
#define	__cpp_lib_any
#define	__cpp_lib_apply
#define	__cpp_lib_make_from_tuple
#define	__cpp_lib_optional
#define	__cpp_lib_tuples_by_type

Typedefs
template<typename _Tp , typename _Up >
using	std::__assigns_from_optional = __or_< is_assignable< _Tp &, const optional< _Up > & >, is_assignable< _Tp &, optional< _Up > & >, is_assignable< _Tp &, const optional< _Up > && >, is_assignable< _Tp &, optional< _Up > && >>
typedef __tuple_concater < __ret, __idx, _Tpls...>	std::__concater
template<typename _Tp , typename _Up >
using	std::__converts_from_optional = __or_< is_constructible< _Tp, const optional< _Up > & >, is_constructible< _Tp, optional< _Up > & >, is_constructible< _Tp, const optional< _Up > && >, is_constructible< _Tp, optional< _Up > && >, is_convertible< const optional< _Up > &, _Tp >, is_convertible< optional< _Up > &, _Tp >, is_convertible< const optional< _Up > &&, _Tp >, is_convertible< optional< _Up > &&, _Tp >>
template<typename _Tp >
using	std::__empty_not_final = typename conditional< __is_final(_Tp), false_type, __is_empty_non_tuple< _Tp >>::type
typedef __make_1st_indices < _Tpls...>::__type	std::__idx
template<typename _Tp , typename _Up >
using	std::__optional_eq_t = __optional_relop_t< decltype(std::declval< const _Tp & >()==std::declval< const _Up & >()) >
template<typename _Tp , typename _Up >
using	std::__optional_ge_t = __optional_relop_t< decltype(std::declval< const _Tp & >() >=std::declval< const _Up & >()) >
template<typename _Tp , typename _Up >
using	std::__optional_gt_t = __optional_relop_t< decltype(std::declval< const _Tp & >() > std::declval< const _Up & >()) >
template<typename _Tp , typename _Up >
using	std::__optional_le_t = __optional_relop_t< decltype(std::declval< const _Tp & >()<=std::declval< const _Up & >()) >
template<typename _Tp , typename _Up >
using	std::__optional_lt_t = __optional_relop_t< decltype(std::declval< const _Tp & >()< std::declval< const _Up & >()) >
template<typename _Tp , typename _Up >
using	std::__optional_ne_t = __optional_relop_t< decltype(std::declval< const _Tp & >()!=std::declval< const _Up & >()) >
template<typename _Tp >
using	std::__optional_relop_t = enable_if_t< is_convertible< _Tp, bool >::value, bool >
typedef __combine_tuples < typename __make_tuple< _Tpls > ::__type...>::__type	std::__tuple_cat_result< _Tpls >::__type

Functions
template<typename... _Args1, typename... _Args2>
constexpr	std::pair< _T1, _T2 >::pair (piecewise_construct_t, tuple< _Args1...>, tuple< _Args2...>)
template<typename _Tp >
constexpr _Tp *	std::__addressof (_Tp &__r) noexcept
template<typename _Fn , typename _Tuple , size_t... _Idx>
decltype(auto) constexpr	std::__apply_impl (_Fn &&__f, _Tuple &&__t, index_sequence< _Idx...>)
template<typename _Tp , typename _Up = _Tp>
constexpr _Tp	std::__exchange (_Tp &__obj, _Up &&__new_val)
template<typename _Tp , typename... _Types>
constexpr size_t	std::__find_uniq_type_in_pack ()
template<size_t __i, typename _Head , typename... _Tail>
constexpr _Head &	std::__get_helper (_Tuple_impl< __i, _Head, _Tail...> &__t) noexcept
template<size_t __i, typename _Head , typename... _Tail>
constexpr const _Head &	std::__get_helper (const _Tuple_impl< __i, _Head, _Tail...> &__t) noexcept
template<size_t __i, typename... _Types>
__enable_if_t<(__i >=sizeof...(_Types))>	std::__get_helper (const tuple< _Types...> &)=delete
template<typename _Tp , typename _Up = typename __inv_unwrap<_Tp>::type>
constexpr _Up &&	std::__invfwd (typename remove_reference< _Tp >::type &__t) noexcept
template<typename _Res , typename _Fn , typename... _Args>
constexpr _Res	std::__invoke_impl (__invoke_other, _Fn &&__f, _Args &&...__args)
template<typename _Res , typename _MemFun , typename _Tp , typename... _Args>
constexpr _Res	std::__invoke_impl (__invoke_memfun_ref, _MemFun &&__f, _Tp &&__t, _Args &&...__args)
template<typename _Res , typename _MemFun , typename _Tp , typename... _Args>
constexpr _Res	std::__invoke_impl (__invoke_memfun_deref, _MemFun &&__f, _Tp &&__t, _Args &&...__args)
template<typename _Res , typename _MemPtr , typename _Tp >
constexpr _Res	std::__invoke_impl (__invoke_memobj_ref, _MemPtr &&__f, _Tp &&__t)
template<typename _Res , typename _MemPtr , typename _Tp >
constexpr _Res	std::__invoke_impl (__invoke_memobj_deref, _MemPtr &&__f, _Tp &&__t)
template<typename _Tp , typename _Tuple , size_t... _Idx>
constexpr _Tp	std::__make_from_tuple_impl (_Tuple &&__t, index_sequence< _Idx...>)
void	std::__throw_bad_any_cast ()
void	std::__throw_bad_optional_access ()
static void	std::any::_Manager_internal< _Tp >::_S_manage (_Op __which, const any *__anyp, _Arg *__arg)
static void	std::any::_Manager_external< _Tp >::_S_manage (_Op __which, const any *__anyp, _Arg *__arg)
template<typename _Tp >
constexpr _Tp *	std::addressof (_Tp &__r) noexcept
template<typename _Tp >
const _Tp *	std::addressof (const _Tp &&)=delete
template<typename _ValueType >
_ValueType	std::any_cast (const any &__any)
template<typename _Tp >
auto	std::declval () noexcept-> decltype(__declval< _Tp >(0))
template<typename _Tp >
constexpr _Tp &&	std::forward (typename std::remove_reference< _Tp >::type &__t) noexcept
template<typename _Tp >
constexpr _Tp &&	std::forward (typename std::remove_reference< _Tp >::type &&__t) noexcept
template<typename... _Elements>
constexpr tuple< _Elements &&...>	std::forward_as_tuple (_Elements &&...__args) noexcept
template<size_t __i, typename... _Elements>
constexpr __tuple_element_t < __i, tuple< _Elements...> > &	std::get (tuple< _Elements...> &__t) noexcept
template<size_t __i, typename... _Elements>
constexpr const __tuple_element_t< __i, tuple < _Elements...> > &	std::get (const tuple< _Elements...> &__t) noexcept
template<size_t __i, typename... _Elements>
constexpr __tuple_element_t < __i, tuple< _Elements...> > &&	std::get (tuple< _Elements...> &&__t) noexcept
template<size_t __i, typename... _Elements>
constexpr const __tuple_element_t< __i, tuple < _Elements...> > &&	std::get (const tuple< _Elements...> &&__t) noexcept
template<typename _Tp , typename... _Types>
constexpr _Tp &	std::get (tuple< _Types...> &__t) noexcept
template<typename _Tp , typename... _Types>
constexpr _Tp &&	std::get (tuple< _Types...> &&__t) noexcept
template<typename _Tp , typename... _Types>
constexpr const _Tp &	std::get (const tuple< _Types...> &__t) noexcept
template<typename _Tp , typename... _Types>
constexpr const _Tp &&	std::get (const tuple< _Types...> &&__t) noexcept
template<typename _Tp , typename... _Args>
enable_if_t < is_constructible_v< any, in_place_type_t< _Tp > , _Args...>, any >	std::make_any (_Args &&...__args)
template<typename _Tp , typename _Up , typename... _Args>
enable_if_t < is_constructible_v< any, in_place_type_t< _Tp > , initializer_list< _Up > &, _Args...>, any >	std::make_any (initializer_list< _Up > __il, _Args &&...__args)
template<typename _T1 , typename _T2 >
constexpr pair< typename __decay_and_strip< _T1 > ::__type, typename __decay_and_strip< _T2 > ::__type >	make_pair (_T1 &&__x, _T2 &&__y)
template<typename... _Elements>
constexpr tuple< typename __decay_and_strip< _Elements > ::__type...>	std::make_tuple (_Elements &&...__args)
template<typename _Tp >
constexpr std::remove_reference< _Tp > ::type &&	std::move (_Tp &&__t) noexcept
template<typename _Tp >
constexpr conditional < __move_if_noexcept_cond< _Tp > ::value, const _Tp &, _Tp && > ::type	std::move_if_noexcept (_Tp &__x) noexcept
template<typename _Callable , typename... _Args>
constexpr __invoke_result < _Callable, _Args...>::type	std::noexcept (__is_nothrow_invocable< _Callable, _Args...>::value)
template<typename _Res , typename _Callable , typename... _Args>
constexpr enable_if_t < is_invocable_r_v< _Res, _Callable, _Args...>, _Res >	std::noexcept (is_nothrow_invocable_r_v< _Res, _Callable, _Args...>)
template<typename _Tp >
constexpr enable_if< __and_ < __not_< __is_tuple_like< _Tp > >, is_move_constructible< _Tp > , is_move_assignable< _Tp > >::value >::type	std::noexcept () is_nothrow_move_assignable< _Tp >>
template<typename _Tp >
constexpr enable_if_t < is_move_constructible_v< _Tp > &&is_swappable_v< _Tp > >	std::noexcept (noexcept(__lhs.swap(__rhs)))
template<typename _Tp >
constexpr enable_if_t < is_constructible_v< decay_t < _Tp >, _Tp >, optional < decay_t< _Tp > > >	std::noexcept (is_nothrow_constructible_v< optional< decay_t< _Tp >>, _Tp >)
template<typename _Tp , typename... _Args>
constexpr enable_if_t < is_constructible_v< _Tp, _Args...>, optional< _Tp > >	std::noexcept (is_nothrow_constructible_v< _Tp, _Args...>)
template<typename _Tp , typename _Up , typename... _Args>
constexpr enable_if_t < is_constructible_v< _Tp, initializer_list< _Up > &, _Args...>, optional< _Tp > >	std::noexcept (is_nothrow_constructible_v< _Tp, initializer_list< _Up > &, _Args...>)
template<typename... _Elements>
constexpr enable_if< __and_ < __is_swappable< _Elements > ...>::value >::type	std::noexcept (noexcept(__x.swap(__y)))
template<typename _Fn , typename _Tuple >
decltype(auto) constexpr	std::noexcept (__unpack_std_tuple< is_nothrow_invocable, _Fn, _Tuple >)
template<typename _Tp , typename _Tuple >
constexpr _Tp	std::noexcept (__unpack_std_tuple< is_nothrow_constructible, _Tp, _Tuple >)
template<typename _Tp , typename _Up >
constexpr auto	std::operator!= (const optional< _Tp > &__lhs, const optional< _Up > &__rhs) -> __optional_ne_t< _Tp, _Up >
template<typename _Tp >
constexpr bool	std::operator!= (const optional< _Tp > &__lhs, nullopt_t) noexcept
template<typename _Tp >
constexpr bool	std::operator!= (nullopt_t, const optional< _Tp > &__rhs) noexcept
template<typename _Tp , typename _Up >
constexpr auto	std::operator!= (const optional< _Tp > &__lhs, const _Up &__rhs) -> __optional_ne_t< _Tp, _Up >
template<typename _Tp , typename _Up >
constexpr auto	std::operator!= (const _Up &__lhs, const optional< _Tp > &__rhs) -> __optional_ne_t< _Up, _Tp >
template<typename... _TElements, typename... _UElements>
constexpr bool	std::operator!= (const tuple< _TElements...> &__t, const tuple< _UElements...> &__u)
template<typename _Tp , typename _Up >
constexpr auto	std::operator< (const optional< _Tp > &__lhs, const optional< _Up > &__rhs) -> __optional_lt_t< _Tp, _Up >
template<typename _Tp >
constexpr bool	std::operator< (const optional< _Tp > &, nullopt_t) noexcept
template<typename _Tp >
constexpr bool	std::operator< (nullopt_t, const optional< _Tp > &__rhs) noexcept
template<typename _Tp , typename _Up >
constexpr auto	std::operator< (const optional< _Tp > &__lhs, const _Up &__rhs) -> __optional_lt_t< _Tp, _Up >
template<typename _Tp , typename _Up >
constexpr auto	std::operator< (const _Up &__lhs, const optional< _Tp > &__rhs) -> __optional_lt_t< _Up, _Tp >
template<typename... _TElements, typename... _UElements>
constexpr bool	std::operator< (const tuple< _TElements...> &__t, const tuple< _UElements...> &__u)
template<typename _Tp , typename _Up >
constexpr auto	std::operator<= (const optional< _Tp > &__lhs, const optional< _Up > &__rhs) -> __optional_le_t< _Tp, _Up >
template<typename _Tp >
constexpr bool	std::operator<= (const optional< _Tp > &__lhs, nullopt_t) noexcept
template<typename _Tp >
constexpr bool	std::operator<= (nullopt_t, const optional< _Tp > &) noexcept
template<typename _Tp , typename _Up >
constexpr auto	std::operator<= (const optional< _Tp > &__lhs, const _Up &__rhs) -> __optional_le_t< _Tp, _Up >
template<typename _Tp , typename _Up >
constexpr auto	std::operator<= (const _Up &__lhs, const optional< _Tp > &__rhs) -> __optional_le_t< _Up, _Tp >
template<typename... _TElements, typename... _UElements>
constexpr bool	std::operator<= (const tuple< _TElements...> &__t, const tuple< _UElements...> &__u)
template<typename _Tp , typename _Up >
constexpr auto	std::operator== (const optional< _Tp > &__lhs, const optional< _Up > &__rhs) -> __optional_eq_t< _Tp, _Up >
template<typename _Tp >
constexpr bool	std::operator== (const optional< _Tp > &__lhs, nullopt_t) noexcept
template<typename _Tp >
constexpr bool	std::operator== (nullopt_t, const optional< _Tp > &__rhs) noexcept
template<typename _Tp , typename _Up >
constexpr auto	std::operator== (const optional< _Tp > &__lhs, const _Up &__rhs) -> __optional_eq_t< _Tp, _Up >
template<typename _Tp , typename _Up >
constexpr auto	std::operator== (const _Up &__lhs, const optional< _Tp > &__rhs) -> __optional_eq_t< _Up, _Tp >
template<typename... _TElements, typename... _UElements>
constexpr bool	std::operator== (const tuple< _TElements...> &__t, const tuple< _UElements...> &__u)
template<typename _Tp , typename _Up >
constexpr auto	std::operator> (const optional< _Tp > &__lhs, const optional< _Up > &__rhs) -> __optional_gt_t< _Tp, _Up >
template<typename _Tp >
constexpr bool	std::operator> (const optional< _Tp > &__lhs, nullopt_t) noexcept
template<typename _Tp >
constexpr bool	std::operator> (nullopt_t, const optional< _Tp > &) noexcept
template<typename _Tp , typename _Up >
constexpr auto	std::operator> (const optional< _Tp > &__lhs, const _Up &__rhs) -> __optional_gt_t< _Tp, _Up >
template<typename _Tp , typename _Up >
constexpr auto	std::operator> (const _Up &__lhs, const optional< _Tp > &__rhs) -> __optional_gt_t< _Up, _Tp >
template<typename... _TElements, typename... _UElements>
constexpr bool	std::operator> (const tuple< _TElements...> &__t, const tuple< _UElements...> &__u)
template<typename _Tp , typename _Up >
constexpr auto	std::operator>= (const optional< _Tp > &__lhs, const optional< _Up > &__rhs) -> __optional_ge_t< _Tp, _Up >
template<typename _Tp >
constexpr bool	std::operator>= (const optional< _Tp > &, nullopt_t) noexcept
template<typename _Tp >
constexpr bool	std::operator>= (nullopt_t, const optional< _Tp > &__rhs) noexcept
template<typename _Tp , typename _Up >
constexpr auto	std::operator>= (const optional< _Tp > &__lhs, const _Up &__rhs) -> __optional_ge_t< _Tp, _Up >
template<typename _Tp , typename _Up >
constexpr auto	std::operator>= (const _Up &__lhs, const optional< _Tp > &__rhs) -> __optional_ge_t< _Up, _Tp >
template<typename... _TElements, typename... _UElements>
constexpr bool	std::operator>= (const tuple< _TElements...> &__t, const tuple< _UElements...> &__u)
template<typename _Tp , size_t _Nm>
constexpr enable_if < __is_swappable< _Tp >::value > ::type	std::swap (_Tp(&__a)[_Nm], _Tp(&__b)[_Nm]) noexcept(/*conditional */)
void	std::swap (any &__x, any &__y) noexcept
template<typename... _Elements>
constexpr enable_if<!__and_ < __is_swappable< _Elements > ...>::value >::type	std::swap (tuple< _Elements...> &, tuple< _Elements...> &)=delete
template<typename... _Elements>
constexpr tuple< _Elements &...>	std::tie (_Elements &...__args) noexcept

Variables
template<template< typename...> class _Trait, typename _Tp , typename _Tuple >
constexpr bool	std::__unpack_std_tuple
template<template< typename...> class _Trait, typename _Tp , typename... _Up>
constexpr bool	std::__unpack_std_tuple< _Trait, _Tp, const tuple< _Up...> & >
template<template< typename...> class _Trait, typename _Tp , typename... _Up>
constexpr bool	std::__unpack_std_tuple< _Trait, _Tp, const tuple< _Up...> >
template<template< typename...> class _Trait, typename _Tp , typename... _Up>
constexpr bool	std::__unpack_std_tuple< _Trait, _Tp, tuple< _Up...> & >
template<template< typename...> class _Trait, typename _Tp , typename... _Up>
constexpr bool	std::__unpack_std_tuple< _Trait, _Tp, tuple< _Up...> >
constexpr _Swallow_assign	std::ignore
constexpr piecewise_construct_t	std::piecewise_construct
template<typename _Tp >
enable_if_t <!(is_move_constructible_v < _Tp > &&is_swappable_v< _Tp >)>	std::swap (optional< _Tp > &, optional< _Tp > &)=delete
template<typename _Tp >
constexpr size_t	std::tuple_size_v
template<typename _ValueType >
_ValueType	std::any_cast (any &__any)
template<typename _ValueType >
_ValueType	std::any_cast (any &&__any)
template<typename _ValueType >
const _ValueType *	std::any_cast (const any *__any) noexcept
template<typename _ValueType >
_ValueType *	std::any_cast (any *__any) noexcept
template<typename _T1 , typename _T2 >
constexpr bool	operator== (const pair< _T1, _T2 > &__x, const pair< _T1, _T2 > &__y)
template<typename _T1 , typename _T2 >
constexpr bool	operator< (const pair< _T1, _T2 > &__x, const pair< _T1, _T2 > &__y)
template<typename _T1 , typename _T2 >
constexpr bool	operator!= (const pair< _T1, _T2 > &__x, const pair< _T1, _T2 > &__y)
template<typename _T1 , typename _T2 >
constexpr bool	operator> (const pair< _T1, _T2 > &__x, const pair< _T1, _T2 > &__y)
template<typename _T1 , typename _T2 >
constexpr bool	operator<= (const pair< _T1, _T2 > &__x, const pair< _T1, _T2 > &__y)
template<typename _T1 , typename _T2 >
constexpr bool	operator>= (const pair< _T1, _T2 > &__x, const pair< _T1, _T2 > &__y)
template<typename _T1 , typename _T2 >
constexpr enable_if< __and_ < __is_swappable< _T1 > , __is_swappable< _T2 > >::value >::type	noexcept (noexcept(__x.swap(__y)))

Detailed Description

Components deemed generally useful. Includes pair, tuple, forward/move helpers, ratio, function object, metaprogramming and type traits, time, date, and memory functions.

Typedef Documentation

template<typename... _Tpls>

constexpr auto std::__tuple_cat_result< _Tpls, typename >::__type

tuple_cat

Definition at line 1679 of file tuple.

Function Documentation

template<class _T1, class _T2>

template<typename... _Args1, typename... _Args2>

constexpr std::pair< _T1, _T2 >::pair ( piecewise_construct_t  , tuple< _Args1...>  __first, tuple< _Args2...>  __second  )

inline

"piecewise construction" using a tuple of arguments for each member.

Parameters

__first	Arguments for the first member of the pair.
__second	Arguments for the second member of the pair.

The elements of each tuple will be used as the constructor arguments for the data members of the pair.

Definition at line 1809 of file tuple.

template<typename _Tp >

constexpr _Tp* std::__addressof ( _Tp &  __r )

inlinenoexcept

Same as C++11 std::addressof.

Definition at line 49 of file move.h.

Referenced by std::_Destroy(), __gnu_debug::_Safe_sequence< _Sequence >::_M_transfer_from_if(), std::addressof(), std::begin(), std::end(), std::sub_match< _BiIter >::operator<(), __gnu_debug::_Safe_local_iterator< _Iterator, _Sequence >::operator=(), __gnu_debug::_Safe_iterator< _Iterator, _Sequence, std::forward_iterator_tag >::operator=(), std::forward_list< _Tp, _Alloc >::operator=(), std::list< _Tp, _Alloc >::operator=(), std::sub_match< _BiIter >::operator==(), std::rethrow_if_nested(), and std::list< __inp, __rebind_inp >::splice().

template<typename _Tp >

constexpr _Tp* std::addressof ( _Tp &  __r )

inlinenoexcept

Returns the actual address of the object or function referenced by r, even in the presence of an overloaded operator&.

Parameters

__r	Reference to an object or function.

Returns

The actual address.

Definition at line 145 of file move.h.

References std::__addressof().

Referenced by std::pointer_traits< _Tp * >::pointer_to().

template<typename _ValueType >

_ValueType std::any_cast ( const any &  __any )

inline

Access the contained object.

Template Parameters

_ValueType

A const-reference or CopyConstructible type.

Parameters

__any

The object to access.

Returns

The contained object.

Exceptions

bad_any_cast

If __any.type() != typeid(remove_reference_t<_ValueType>)

Definition at line 460 of file any.

Referenced by std::experimental::fundamentals_v1::any_cast(), and std::any_cast().

template<typename _ValueType >

_ValueType std::any_cast ( any &  __any )

inline

Access the contained object.

Template Parameters

_ValueType

A reference or CopyConstructible type.

Parameters

__any

The object to access.

Returns

The contained object.

Exceptions

bad_any_cast

If __any.type() != typeid(remove_reference_t<_ValueType>)

Definition at line 486 of file any.

References std::any_cast().

template<typename _ValueType >

_ValueType std::any_cast ( any &&  __any )

inline

Access the contained object.

Template Parameters

_ValueType

A reference or CopyConstructible type.

Parameters

__any

The object to access.

Returns

The contained object.

Exceptions

bad_any_cast

If __any.type() != typeid(remove_reference_t<_ValueType>)

Definition at line 500 of file any.

References std::any_cast(), and std::move().

template<typename _ValueType >

const _ValueType* std::any_cast ( const any *  __any )

inlinenoexcept

Access the contained object.

Template Parameters

_ValueType

The type of the contained object.

Parameters

__any

A pointer to the object to access.

Returns

The address of the contained object if __any != nullptr && __any.type() == typeid(_ValueType) , otherwise a null pointer.

Definition at line 553 of file any.

template<typename _ValueType >

_ValueType* std::any_cast ( any *  __any )

inlinenoexcept

Access the contained object.

Template Parameters

_ValueType

The type of the contained object.

Parameters

__any

A pointer to the object to access.

Returns

The address of the contained object if __any != nullptr && __any.type() == typeid(_ValueType) , otherwise a null pointer.

Definition at line 562 of file any.

template<typename _Tp >

auto std::declval ( ) -> decltype(__declval< _Tp >(0))

noexcept

Utility to simplify expressions used in unevaluated operands

Since

C++11

Definition at line 2364 of file type_traits.

template<typename _Tp >

constexpr _Tp&& std::forward ( typename std::remove_reference< _Tp >::type &  __t )

noexcept

Forward an lvalue.

Returns

The parameter cast to the specified type.

This function is used to implement "perfect forwarding".

Definition at line 77 of file move.h.

template<typename _Tp >

constexpr _Tp&& std::forward ( typename std::remove_reference< _Tp >::type &&  __t )

noexcept

Forward an rvalue.

Returns

The parameter cast to the specified type.

This function is used to implement "perfect forwarding".

Definition at line 89 of file move.h.

template<typename... _Elements>

constexpr tuple<_Elements&&...> std::forward_as_tuple ( _Elements &&...  __args )

noexcept

std::forward_as_tuple

Definition at line 1621 of file tuple.

Referenced by std::map< _Key, _Tp, _Compare, _Alloc >::insert_or_assign(), and std::map< _Key, _Tp, _Compare, _Alloc >::try_emplace().

template<size_t __i, typename... _Elements>

constexpr __tuple_element_t<__i, tuple<_Elements...> >& std::get ( tuple< _Elements...> &  __t )

noexcept

Return a reference to the ith element of a tuple.

Definition at line 1397 of file tuple.

template<size_t __i, typename... _Elements>

constexpr const __tuple_element_t<__i, tuple<_Elements...> >& std::get ( const tuple< _Elements...> &  __t )

noexcept

Return a const reference to the ith element of a const tuple.

Definition at line 1403 of file tuple.

template<size_t __i, typename... _Elements>

constexpr __tuple_element_t<__i, tuple<_Elements...> >&& std::get ( tuple< _Elements...> &&  __t )

noexcept

Return an rvalue reference to the ith element of a tuple rvalue.

Definition at line 1409 of file tuple.

template<size_t __i, typename... _Elements>

constexpr const __tuple_element_t<__i, tuple<_Elements...> >&& std::get ( const tuple< _Elements...> &&  __t )

noexcept

Return a const rvalue reference to the ith element of a const tuple rvalue.

Definition at line 1418 of file tuple.

template<typename _Tp , typename... _Types>

constexpr _Tp& std::get ( tuple< _Types...> &  __t )

noexcept

Return a reference to the unique element of type _Tp of a tuple.

Definition at line 1453 of file tuple.

template<typename _Tp , typename... _Types>

constexpr _Tp&& std::get ( tuple< _Types...> &&  __t )

noexcept

Return a reference to the unique element of type _Tp of a tuple rvalue.

Definition at line 1464 of file tuple.

template<typename _Tp , typename... _Types>

constexpr const _Tp& std::get ( const tuple< _Types...> &  __t )

noexcept

Return a const reference to the unique element of type _Tp of a tuple.

Definition at line 1475 of file tuple.

template<typename _Tp , typename... _Types>

constexpr const _Tp&& std::get ( const tuple< _Types...> &&  __t )

noexcept

Return a const reference to the unique element of type _Tp of a const tuple rvalue.

Definition at line 1487 of file tuple.

template<typename _Tp , typename... _Args>

enable_if_t<is_constructible_v<any, in_place_type_t<_Tp>, _Args...>, any> std::make_any ( _Args &&...  __args )

inline

Create an any holding a _Tp constructed from __args....

Definition at line 434 of file any.

References std::any::any().

template<typename _Tp , typename _Up , typename... _Args>

enable_if_t<is_constructible_v<any, in_place_type_t<_Tp>, initializer_list<_Up>&, _Args...>, any> std::make_any ( initializer_list< _Up >  __il, _Args &&...  __args  )

inline

Create an any holding a _Tp constructed from __il and __args....

Definition at line 444 of file any.

References std::any::any().

template<typename _T1 , typename _T2 >

constexpr pair< typename __decay_and_strip< _T1 >::__type, typename __decay_and_strip< _T2 >::__type > make_pair ( _T1 &&  __x, _T2 &&  __y  )

related

A convenience wrapper for creating a pair from two objects.

Parameters

__x	The first object.
__y	The second object.

Returns

A newly-constructed pair<> object of the appropriate type.

The C++98 standard says the objects are passed by reference-to-const, but C++03 says they are passed by value (this was LWG issue #181).

Since C++11 they have been passed by forwarding reference and then forwarded to the new members of the pair. To create a pair with a member of reference type, pass a reference_wrapper to this function.

Definition at line 567 of file stl_pair.h.

template<typename _Tp >

constexpr std::remove_reference<_Tp>::type&& std::move ( _Tp &&  __t )

noexcept

Convert a value to an rvalue.

Parameters

__t	A thing of arbitrary type.

Returns

The parameter cast to an rvalue-reference to allow moving it.

Definition at line 104 of file move.h.

Referenced by std::any_cast(), std::basic_regex< typename, typename >::assign(), std::async(), std::shared_ptr< _Tp >::atomic_compare_exchange_strong_explicit(), std::exclusive_scan(), std::for_each_n(), std::future< _Res >::get(), std::inclusive_scan(), std::unordered_set< _Value, _Hash, _Pred, _Alloc >::insert(), std::unordered_map< _Key, _Tp, _Hash, _Pred >::insert(), std::multimap< _Key, _Tp, _Compare, _Alloc >::insert(), std::multiset< _Key, _Compare, _Alloc >::insert(), std::set< _Key, _Compare, _Alloc >::insert(), std::map< _Key, _Tp, _Compare, _Alloc >::insert(), std::unordered_multiset< _Value, _Hash, _Pred, _Alloc >::insert(), std::vector< block_type, allocator_type >::insert(), std::list< __inp, __rebind_inp >::insert(), std::unordered_multimap< _Key, _Tp, _Hash, _Pred, _Alloc >::insert(), std::deque< _StateSeqT >::insert(), std::forward_list< _Tp, _Alloc >::merge(), std::move_if_noexcept(), std::noexcept(), std::tr2::dynamic_bitset< _WordT, _Alloc >::operator&=(), std::operator<<(), std::function< _Res(_ArgTypes...)>::operator=(), std::basic_regex< typename, typename >::operator=(), std::forward_list< _Tp, _Alloc >::operator=(), std::vector< block_type, allocator_type >::operator=(), std::list< __inp, __rebind_inp >::operator=(), std::deque< _StateSeqT >::operator=(), std::operator>>(), std::unordered_map< _Key, _Tp, _Hash, _Pred >::operator[](), std::reduce(), std::unique_ptr< _Result< _Res > >::reset(), std::unique_ptr< _Tp[], _Dp >::reset(), std::list< __inp, __rebind_inp >::splice(), std::transform_exclusive_scan(), std::transform_inclusive_scan(), std::transform_reduce(), and std::unique_ptr< _Result< _Res > >::~unique_ptr().

template<typename _Tp >

constexpr conditional<__move_if_noexcept_cond<_Tp>::value, const _Tp&, _Tp&&>::type std::move_if_noexcept ( _Tp &  __x )

noexcept

Conditionally convert a value to an rvalue.

Parameters

__x	A thing of arbitrary type.

Returns

The parameter, possibly cast to an rvalue-reference.

Same as std::move unless the type's move constructor could throw and the type is copyable, in which case an lvalue-reference is returned instead.

Definition at line 125 of file move.h.

References std::move().

template<typename _Callable , typename... _Args>

constexpr __invoke_result<_Callable, _Args...>::type std::noexcept

(

__is_nothrow_invocable< _Callable, _Args...>::value

)

Invoke a callable object.

Definition at line 91 of file invoke.h.

template<typename _Tp >

constexpr enable_if<__and_<__not_<__is_tuple_like<_Tp> >, is_move_constructible<_Tp>, is_move_assignable<_Tp> >::value>::type std::noexcept ( )

inline

Swaps two values.

Parameters

__a	A thing of arbitrary type.
__b	Another thing of arbitrary type.

Returns

Nothing.

Definition at line 198 of file move.h.

template<typename _T1 , typename _T2 >

constexpr enable_if< __and_< __is_swappable< _T1 >, __is_swappable< _T2 > >::value >::type noexcept ( noexcept(__x.swap(__y))  )

related

Swap overload for pairs. Calls std::pair::swap().

Note

This std::swap overload is not declared in C++03 mode, which has performance implications, e.g. see https://gcc.gnu.org/PR38466

Definition at line 534 of file stl_pair.h.

template<typename... _Elements>

constexpr enable_if<__and_<__is_swappable<_Elements>...>::value >::type std::noexcept ( noexcept(__x.swap(__y))  )

related

swap

Definition at line 1765 of file tuple.

template<typename _T1 , typename _T2 >

constexpr bool operator!= ( const pair< _T1, _T2 > &  __x, const pair< _T1, _T2 > &  __y  )

related

Uses operator== to find the result.

Definition at line 496 of file stl_pair.h.

template<typename _T1 , typename _T2 >

constexpr bool operator< ( const pair< _T1, _T2 > &  __x, const pair< _T1, _T2 > &  __y  )

related

Defines a lexicographical order for pairs.

For two pairs of the same type, P is ordered before Q if P.first is less than Q.first, or if P.first and Q.first are equivalent (neither is less than the other) and P.second is less than Q.second.

Definition at line 489 of file stl_pair.h.

References std::pair< _T1, _T2 >::first, and std::pair< _T1, _T2 >::second.

template<typename _T1 , typename _T2 >

constexpr bool operator<= ( const pair< _T1, _T2 > &  __x, const pair< _T1, _T2 > &  __y  )

related

Uses operator< to find the result.

Definition at line 508 of file stl_pair.h.

template<typename _T1 , typename _T2 >

constexpr bool operator== ( const pair< _T1, _T2 > &  __x, const pair< _T1, _T2 > &  __y  )

related

Two pairs of the same type are equal iff their members are equal.

Definition at line 466 of file stl_pair.h.

References std::pair< _T1, _T2 >::first, and std::pair< _T1, _T2 >::second.

template<typename _T1 , typename _T2 >

constexpr bool operator> ( const pair< _T1, _T2 > &  __x, const pair< _T1, _T2 > &  __y  )

related

Uses operator< to find the result.

Definition at line 502 of file stl_pair.h.

template<typename _T1 , typename _T2 >

constexpr bool operator>= ( const pair< _T1, _T2 > &  __x, const pair< _T1, _T2 > &  __y  )

related

Uses operator< to find the result.

Definition at line 514 of file stl_pair.h.

template<typename _Tp , size_t _Nm>

constexpr enable_if<__is_swappable<_Tp>::value>::type std::swap ( _Tp(&)  __a[_Nm], _Tp(&)  __b[_Nm]  )

inlinenoexcept

Swap the contents of two arrays.

Definition at line 220 of file move.h.

void std::swap ( any &  __x, any &  __y  )

inlinenoexcept

Exchange the states of two any objects.

Definition at line 428 of file any.

template<typename... _Elements>

constexpr tuple<_Elements&...> std::tie ( _Elements &...  __args )

noexcept

tie

Definition at line 1750 of file tuple.

Referenced by std::basic_ios< _CharT, _Traits >::copyfmt(), std::lock(), and std::try_lock().

Variable Documentation

constexpr piecewise_construct_t std::piecewise_construct

inline

Tag for piecewise construction of std::pair objects.

Definition at line 83 of file stl_pair.h.

Referenced by std::map< _Key, _Tp, _Compare, _Alloc >::insert_or_assign(), std::map< _Key, _Tp, _Compare, _Alloc >::operator[](), and std::map< _Key, _Tp, _Compare, _Alloc >::try_emplace().