DBM::Deep::Iterator - iterator for FIRSTKEY() and NEXTKEY()
This is an internal-use-only object for DBM::Deep. It is the iterator for FIRSTKEY() and NEXTKEY().
The constructor takes a hashref of params. The hashref is assumed to have the following elements:
engine (of type DBM::Deep::Engine
base_offset (the base_offset of the invoking DBM::Deep object)
This method takes no arguments.
It will reset the iterator so that it will start from the beginning again.
This method returns nothing.