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std::jthread::~jthread
 | 
      (since C++20) | 
Destroys the jthread object.
If *this has an associated thread (joinable() == true), calls request_stop() and then join().
Notes
The request_stop() has no effect if the jthread was previously requested to stop.
A jthread object does not have an associated thread after
- it was default-constructed.
 - it was moved from.
 join()has been called.detach()has been called.
If join() throws an exception (e.g. because deadlock is detected), std::terminate() may be called.
Example
See also
| destructs the thread object, underlying thread must be joined or detached  (public member function of std::thread) | 
     
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