std::atomic_ref<T>::operator=
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std::atomic_ref
atomic_ref::operator=
(C++26)
(C++26)
(C++26)
value_type operator=( value_type desired ) const noexcept;
(1)
(constexpr since C++26)
atomic_ref& operator=( const atomic_ref& ) = delete;
(2)
1) 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
|