< cpp‎ | utility‎ | any
Utilities library
Language support
Type support (basic types, RTTI)
Library feature-test macros (C++20)
Dynamic memory management
Program utilities
Coroutine support (C++20)
Variadic functions
Debugging support
Three-way comparison
General utilities
Date and time
Function objects
Formatting library (C++20)
Relational operators (deprecated in C++20)
Integer comparison functions
Swap and type operations
Common vocabulary types
Elementary string conversions

any& operator=( const any& rhs );
(1) (since C++17)
any& operator=( any&& rhs ) noexcept;
(2) (since C++17)
template< typename ValueType >
    any& operator=( ValueType&& rhs );
(3) (since C++17)

Assigns contents to the contained value.

1) Assigns by copying the state of rhs, as if by any(rhs).swap(*this).
2) Assigns by moving the state of rhs, as if by any(std::move(rhs)).swap(*this). rhs is left in a valid but unspecified state after the assignment.
3) Assigns the type and value of rhs, as if by any(std::forward<ValueType>(rhs)).swap(*this). This overload participates in overload resolution only if std::decay_t<ValueType> is not the same type as any and std::is_copy_constructible_v<std::decay_t<ValueType>> is true.


[edit] Template parameters

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

[edit] Parameters

rhs - object whose contained value to assign

[edit] Return value


[edit] Exceptions

1,3) Throws std::bad_alloc or any exception thrown by the constructor of the contained type. If an exception is thrown, there are no effects (strong exception guarantee).

[edit] Example

[edit] See also

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