libstdc++
std::experimental::fundamentals_v1::optional< _Tp > Class Template Reference
Inheritance diagram for std::experimental::fundamentals_v1::optional< _Tp >:
[legend]

Public Types

using value_type = _Tp
 

Public Member Functions

template<typename... _Args>
void 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)
 
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 >
enable_if_t< is_same< _Tp, decay_t< _Up > >::value, optional & > operator= (_Up &&__u)
 
void swap (optional &__other) noexcept(is_nothrow_move_constructible< _Tp >() &&noexcept(swap(declval< _Tp & >(), declval< _Tp & >())))
 
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 Member Functions

void _M_construct (_Args &&...__args) noexcept(is_nothrow_constructible< _Stored_type, _Args... >())
 
void _M_destruct ()
 
constexpr _Tp & _M_get () noexcept
 
constexpr const _Tp & _M_get () const noexcept
 
constexpr bool _M_is_engaged () const noexcept
 
void _M_reset ()
 

Private Attributes

_Empty_byte _M_empty
 
_Stored_type _M_payload
 

Detailed Description

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

Class template for optional values.

Definition at line 82 of file optional.


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