std::atomic_ref::operator= - cppreference.com (original) (raw)
| value_type operator=( value_type desired ) const noexcept; | (1) | (constexpr since C++26) |
|---|---|---|
| atomic_ref& operator=( const atomic_ref& ) = delete; | (2) |
- Equivalent to store(desired); return desired;. This overload participates in overload resolution only if std::is_const_v<T> is false.
[edit] Parameters
| desired | - | value to assign |
|---|
[edit] Return value
As described above.
[edit] Notes
Unlike most assignment operators, the assignment operator for atomic_ref does not return a reference to its left-hand argument. It returns a copy of the stored value instead.
[edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
| DR | Applied to | Behavior as published | Correct behavior |
|---|---|---|---|
| LWG 3508(P3323R1) | C++20 | assignment operator was meaningless for const T | constrained to accept only non-const T |
[edit] See also
| | constructs an atomic_ref object (public member function) [edit] | | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | | atomically replaces the value of the referenced object with a non-atomic argument (public member function) [edit] |