< cpp‎ | experimental‎ | any
Technical Specification
Filesystem library (filesystem TS)
Library fundamentals (library fundamentals TS)
Library fundamentals 2 (library fundamentals TS v2)
Library fundamentals 3 (library fundamentals TS v3)
Extensions for parallelism (parallelism TS)
Extensions for parallelism 2 (parallelism TS v2)
Extensions for concurrency (concurrency TS)
Extensions for concurrency 2 (concurrency TS v2)
Concepts (concepts TS)
Ranges (ranges TS)
Reflection (reflection TS)
Mathematical special functions (special functions TR)
Experimental Non-TS
Pattern Matching
Linear Algebra
2D Graphics
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>
    any( ValueType&& value );
(4) (library fundamentals TS)

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.


[edit] Template parameters

ValueType - contained value type
Type requirements
std::decay_t<ValueType> must meet the requirements of CopyConstructible.

[edit] Parameters

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

[edit] Exceptions

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

[edit] See also

assigns an any object
(public member function) [edit]