std::nostopstate, std::nostopstate_t
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                    < cpp | thread | stop source
                    
                                                            
                    | Defined in header  <stop_token> | ||
| struct nostopstate_t { explicit nostopstate_t() = default; }; | (1) | (since C++20) | 
| inline constexpr std::nostopstate_t nostopstate {}; | (2) | (since C++20) | 
1) Empty tag type intended for use as a placeholder in std::stop_source non-default constructor, that makes the constructed std::stop_source empty with no associated stop-state.
2) The corresponding constant object instance of 
std::nostopstate_t for use in constructing an empty std::stop_source, as a placeholder value in the non-default constructor.[edit] See also
| (C++20) | class representing a request to stop one or more std::jthreads (class) | 


