Modern C++ Programming Cookbook

How it works...

std::back_inserter(), std::front_inserter(), and std::inserter() are all helper functions that create iterator adapters of types, std::back_insert_iterator, std::front_insert_iterator, and std::insert_iterator. These are all output iterators that append, prepend, or insert into the container for which they were constructed. Incrementing and dereferencing these iterators does not do anything. However, upon assignment, these iterators call the following methods from the container:

• std::back_insterter_iterator calls push_back()
• std::front_inserter_iterator calls push_front()
• std::insert_iterator calls insert()

The following is the over-simplified implementation of std::back_inserter_iterator:

    template<class C> class back_insert_iterator ...