Iterator - marks a position in a data structure

SYNOPSIS

       #include <Unidraw/iterator.h>

DESCRIPTION

       An  iterator  marks a position in a data structure, gener-
       ally during a traversal of some  sort.   For  example,  an
       iterator  keeps track of the current position when iterat-
       ing through a list of elements.  Unidraw's Iterator  class
       serves  this purpose in conjunction with ULists or objects
       that use them.

PUBLIC OPERATIONS

       Iterator()
       Iterator(Iterator&)
              Construct a new iterator.  The  second  constructor
              initializes  the  iterator's  value  to that of the
              given iterator.

       virtual void SetValue(void*)
       virtual void* GetValue()
              Classes that use an iterator  must  store  position
              information  in  it.   These operations set and get
              the this information.

SEE ALSO

       UList(3U)