# std::any::operator=

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< cpp‎ | utility‎ | any

any& operator=( const any& rhs ); | (1) | (since C++17)
any& operator=( any&& rhs ); | (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 only participates in overload resolution 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

2)
`noexcept` specification:
noexcept
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).

### See also

(constructor) | constructs an `any` object (public member function)

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