The GoF book Design Patterns suggests that begin() and end() should be iterator methods. In C++, the iterator protocol specifies that the begin() and end() must be methods of the iterable object.

1. why is it implemented this way? So that you can easily write something like std::find(a.begin() +3, a.begin() + 4, 5)?
2. If iterators in C++ were implemented as described in the GoF book, then these would actually be ranges?