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std::thread:: operator=

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thread & operator = ( thread && other ) noexcept ;
(since C++11)

If * this still has an associated running thread (i.e. joinable ( ) == true ), calls std:: terminate ( ) . Otherwise, assigns the state of other to * this and sets other to a default constructed state.

After this call, this - > get_id ( ) is equal to the value of other. get_id ( ) prior to the call, and other no longer represents a thread of execution.

Parameters

other - another thread object to assign to this thread object

Return value

* this