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    std::atomic<T>::operator=

    From cppreference.com
     
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    std::atomic
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    T operator=( T desired ) noexcept;
    		(1) (since C++11) 
    T operator=( T desired ) volatile noexcept;
    		(2) (since C++11) 
    atomic& operator=( const atomic& ) = delete;
    		(3) (since C++11) 
    atomic& operator=( const atomic& ) volatile = delete;
    		(4) (since C++11)
    1,2) Atomically assigns desired to the atomic variable. Equivalent to store(desired).

    It is deprecated if std::atomic<T>::is_always_lock_free is false and overload (2) participates in overload resolution.

    		(since C++20)
    3,4) Atomic variables are not CopyAssignable.

    Parameters

    desired - value to assign

    Return value

    1,2) desired

    Notes

    Unlike most assignment operators, the assignment operators for atomic types do not return a reference to their left-hand arguments. They return a copy of the stored value instead.

    See also

    		 constructs an atomic object
    (public member function) [edit]