std::any(3cxx) | std::any(3cxx) |
std::any - A type-safe container of any type.
#include <any>
constexpr any () noexcept
Default constructor, creates an empty object. template<typename _Tp
, typename _VTp = _Decay_if_not_any<_Tp>,
typename _Mgr = _Manager<_VTp>, enable_if_t<
is_copy_constructible_v< _VTp >
&&!__is_in_place_type_v< _VTp >, bool > = true>
any (_Tp &&__value)
Construct with a copy of __value as the contained object. any
(any &&__other) noexcept
Move constructor, transfer the state from __other. any (const
any &__other)
Copy constructor, copies the state of __other.
template<typename _Tp , typename... _Args, typename
_VTp = decay_t<_Tp>, typename _Mgr =
_Manager<_VTp>, __any_constructible_t< _VTp, _Args
&&... > = false> any (in_place_type_t< _Tp >,
_Args &&... __args)
Construct with an object created from __args as the contained object.
template<typename _Tp , typename _Up , typename... _Args,
typename _VTp = decay_t<_Tp>, typename
_Mgr = _Manager<_VTp>, __any_constructible_t< _VTp,
initializer_list< _Up > &, _Args &&... >
= false> any (in_place_type_t< _Tp >,
initializer_list< _Up > __il, _Args &&...
__args)
Construct with an object created from __il and __args as the contained
object. ~any ()
Destructor, calls reset() template<typename _Tp ,
typename... _Args> __emplace_t< decay_t< _Tp >, _Args...
> emplace (_Args &&... __args)
Emplace with an object created from __args as the contained object.
template<typename _Tp , typename _Up , typename...
_Args> __emplace_t< decay_t< _Tp >,
initializer_list< _Up > &, _Args &&... >
emplace (initializer_list< _Up > __il,
_Args &&... __args)
Emplace with an object created from __il and __args as the contained
object. bool has_value () const noexcept
Reports whether there is a contained object or not.
template<typename _Tp > enable_if_t<
is_copy_constructible< _Decay_if_not_any< _Tp >
>::value, any & > operator= (_Tp
&&__rhs)
Store a copy of __rhs as the contained object. any &
operator= (any &&__rhs) noexcept
Move assignment operator. any & operator= (const any
&__rhs)
Copy the state of another object. void reset () noexcept
If not empty, destroy the contained object. void swap
(any &__rhs) noexcept
Exchange state with another object. const type_info & type
() const noexcept
The typeid of the contained object, or typeid(void) if empty.
A type-safe container of any type.
An any object's state is either empty or it stores a contained object of CopyConstructible type.
Since
Default constructor, creates an empty object.
Copy constructor, copies the state of __other.
Move constructor, transfer the state from __other.
Postcondition
Construct with a copy of __value as the contained object.
Construct with an object created from __args as the contained object.
Construct with an object created from __il and __args as the contained object.
Destructor, calls reset()
Emplace with an object created from __args as the contained object.
Emplace with an object created from __il and __args as the contained object.
Reports whether there is a contained object or not.
Store a copy of __rhs as the contained object.
Move assignment operator.
Postcondition
Copy the state of another object.
If not empty, destroy the contained object.
Exchange state with another object.
The typeid of the contained object, or typeid(void) if empty.
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