std::insert_iterator<Container>::insert_iterator
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                    < cpp | iterator | insert iterator
                    
                                                            
                    
| insert_iterator() = default; | (1) | (since C++20) | 
| (2) | ||
| insert_iterator( Container& c, typename Container::iterator i ); | (until C++20) | |
| constexpr  insert_iterator( Container& c, ranges::iterator_t<Container> i ); | (since C++20) | |
| 1) Initializes the underlying pointer to container with nullptr and value-initializes the underlying iterator. | (since C++20) | 
2) Initializes the underlying pointer to the container to std::addressof(c) and the underlying iterator to 
i.Parameters
| c | - | container to initialize the inserter with | 
| i | - | iterator to initialize the inserter with |