std::any::operator=
From cppreference.com
| any& operator=( const any& rhs );
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(1) | (since C++17) |
| any& operator=( any&& rhs );
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(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). If std::is_copy_constructible<std::decay_t<ValueType>>::value is false, the program is ill-formed. This overload only participates in overload resolution if std::decay_t<ValueType> is not the same type as any.
Contents |
[edit] Template parameters
| ValueType | - | contained value type |
| Type requirements | ||
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std::decay_t<ValueType> must meet the requirements of CopyConstructible.
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[edit] Parameters
| rhs | - | object whose contained value to assign |
[edit] Return value
*this
[edit] 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).
[edit] See also
constructs an any object (public member function) |