std::any::operator=

< cpp‎ | utility‎ | any

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. .

Template parameters

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

Parameters

rhs

object whose contained value to assign

Return value

*this

Exceptions

1,3) Throws 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).

Example