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std::back_insert_iterator<Container>:: back_insert_iterator

From cppreference.net

C++
Iterator library
Iterator concepts
Iterator primitives
Algorithm concepts and utilities
Indirect callable concepts
Common algorithm requirements
(C++20)
(C++20)
(C++20)
Utilities
(C++20)
Iterator adaptors
Range access
(C++11) (C++14)
(C++14) (C++14)
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(C++14) (C++14)
(C++17) (C++20)
(C++17)
(C++17)
std::back_insert_iterator
explicit back_insert_iterator ( Container & c ) ;
(until C++20)
constexpr explicit back_insert_iterator ( Container & c ) ;
(since C++20)

Initializes the underlying pointer to the container to std:: addressof ( c ) .

Parameters

c - container to initialize the inserter with

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
P2325R3 C++20 default constructor was provided as C++20
iterators must be default_initializable 		removed along with the requirement