Scroll to navigation

std::experimental::any::any(3) C++ Standard Libary std::experimental::any::any(3)

NAME

std::experimental::any::any - std::experimental::any::any

Synopsis


any() noexcept; (1) (library fundamentals TS)
any( const any& other ); (2) (library fundamentals TS)
any( any&& other ) noexcept; (3) (library fundamentals TS)
template<typename ValueType> (4) (library fundamentals TS)
any( ValueType&& value );


Constructs a new any object.


1) Constructs an empty object.
2-3) Copies (2) or moves (3) content of other into a new instance, so that any
content is equivalent in both type and value to those of other prior to the
constructor call, or empty if other is empty.
4) Constructs an object with initial content an object of type
std::decay_t<ValueType>, direct-initialized from std::forward<ValueType>(value). If
std::is_copy_constructible<std::decay_t<ValueType>>::value is false, the program is
ill-formed. This overload participates in overload resolution only if
std::decay_t<ValueType> is not the same type as any.

Template parameters


ValueType - contained value type

Type requirements


-
std::decay_t<ValueType> must meet the requirements of CopyConstructible.

Parameters


other - another any object to copy or move from
value - value to initialize the contained value with

Exceptions


2,4) Throws any exception thrown by the constructor of the contained type.

See also


operator= assigns an any object
(public member function)

2022.07.31 http://cppreference.com