libstdc++
std::experimental::fundamentals_v1::optional< _Tp > Class Template Reference
Inheritance diagram for std::experimental::fundamentals_v1::optional< _Tp >:
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Public Types

using value_type = _Tp
 

Public Member Functions

template<typename _Up = _Tp, enable_if_t< __and_< __not_< is_same< optional< _Tp >, decay_t< _Up >>>, is_constructible< _Tp, _Up && >, is_convertible< _Up &&, _Tp > >::value, bool > = true>
constexpr optional (_Up &&__t)
 
template<typename _Up = _Tp, enable_if_t< __and_< __not_< is_same< optional< _Tp >, decay_t< _Up >>>, is_constructible< _Tp, _Up && >, __not_< is_convertible< _Up &&, _Tp >> >::value, bool > = false>
constexpr optional (_Up &&__t)
 
template<typename _Up , enable_if_t< __and_< __not_< is_same< _Tp, _Up >>, is_constructible< _Tp, const _Up & >, is_convertible< const _Up &, _Tp >, __not_< __converts_from_optional< _Tp, _Up >> >::value, bool > = true>
constexpr optional (const optional< _Up > &__t)
 
template<typename _Up , enable_if_t< __and_< __not_< is_same< _Tp, _Up >>, is_constructible< _Tp, const _Up & >, __not_< is_convertible< const _Up &, _Tp >>, __not_< __converts_from_optional< _Tp, _Up >> >::value, bool > = false>
constexpr optional (const optional< _Up > &__t)
 
template<typename _Up , enable_if_t< __and_< __not_< is_same< _Tp, _Up >>, is_constructible< _Tp, _Up && >, is_convertible< _Up &&, _Tp >, __not_< __converts_from_optional< _Tp, _Up >> >::value, bool > = true>
constexpr optional (optional< _Up > &&__t)
 
template<typename _Up , enable_if_t< __and_< __not_< is_same< _Tp, _Up >>, is_constructible< _Tp, _Up && >, __not_< is_convertible< _Up &&, _Tp >>, __not_< __converts_from_optional< _Tp, _Up >> >::value, bool > = false>
constexpr optional (optional< _Up > &&__t)
 
template<typename... _Args>
enable_if_t< is_constructible
< _Tp, _Args &&...>::value > 
emplace (_Args &&...__args)
 
template<typename _Up , typename... _Args>
enable_if_t< is_constructible
< _Tp, initializer_list< _Up >
&, _Args &&...>::value > 
emplace (initializer_list< _Up > __il, _Args &&...__args)
 
 if (this->_M_is_engaged()&&__other._M_is_engaged()) swap(this-> _M_get(), __other._M_get())
 
else if (this->_M_is_engaged())
 
else if (__other._M_is_engaged())
 
constexpr operator bool () const noexcept
 
constexpr const _Tp & operator* () const &
 
constexpr _Tp & operator* ()&
 
constexpr _Tp && operator* ()&&
 
constexpr const _Tp && operator* () const &&
 
constexpr const _Tp * operator-> () const
 
_Tp * operator-> ()
 
optionaloperator= (nullopt_t) noexcept
 
template<typename _Up = _Tp>
enable_if_t< __and_< __not_
< is_same< optional< _Tp >
, decay_t< _Up >
> >, is_constructible< _Tp,
_Up >, __not_< __and_
< is_scalar< _Tp >, is_same
< _Tp, decay_t< _Up >
> > >, is_assignable< _Tp
&, _Up > >::value, optional & > 
operator= (_Up &&__u)
 
template<typename _Up >
enable_if_t< __and_< __not_
< is_same< _Tp, _Up >
>, is_constructible< _Tp,
const _Up & >, is_assignable
< _Tp &, _Up >, __not_
< __converts_from_optional
< _Tp, _Up > >, __not_
< __assigns_from_optional< _Tp,
_Up > > >::value, optional & > 
operator= (const optional< _Up > &__u)
 
template<typename _Up >
enable_if_t< __and_< __not_
< is_same< _Tp, _Up >
>, is_constructible< _Tp, _Up >
, is_assignable< _Tp &, _Up >
, __not_
< __converts_from_optional
< _Tp, _Up > >, __not_
< __assigns_from_optional< _Tp,
_Up > > >::value, optional & > 
operator= (optional< _Up > &&__u)
 
constexpr const _Tp & value () const &
 
constexpr _Tp & value ()&
 
constexpr _Tp && value ()&&
 
constexpr const _Tp && value () const &&
 
template<typename _Up >
constexpr _Tp value_or (_Up &&__u) const &
 
template<typename _Up >
_Tp value_or (_Up &&__u)&&
 

Private Types

using _Stored_type = remove_const_t< _Tp >
 

Private Member Functions

void _M_destruct () noexcept
 
constexpr _Tp & _M_get () noexcept
 
constexpr const _Tp & _M_get () const noexcept
 
constexpr bool _M_is_engaged () const noexcept
 
constexpr void _M_reset () noexcept
 
template<typename... _Args>
void noexcept (is_nothrow_constructible_v< _Stored_type, _Args...>)
 
constexpr noexcept (is_nothrow_move_constructible_v< _Tp >)
 

Private Attributes

_Optional_payload< _Tp > _M_payload
 

Detailed Description

template<typename _Tp>
class std::experimental::fundamentals_v1::optional< _Tp >

Class template for optional values.

Definition at line 70 of file experimental/optional.


The documentation for this class was generated from the following file: