std::unique_lock<Mutex>::operator=
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                    < cpp | thread | unique lock
                    
                                                            
                    |   unique_lock& operator=( unique_lock&& other );  | 
(since C++11) | |
Move assignment operator. Replaces the contents with those of other using move semantics. 
If prior to the call *this has an associated mutex and has acquired ownership of it, the mutex is unlocked.
Parameters
| other | - |   another unique_lock to replace the state with
 | 
Return value
*this
Exceptions
Throws nothing