std::any::operator=

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std::any
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any::operator=
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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

See also

constructs an any object
(public member function)