On Sun, 27 May 2007, Ryan Freckleton wrote: > I've been following the python-dev and python 3000 lists for over a > year, but this is my first posting.
Hello! > I think I've found additional abstract base class to add to PEP 3119. > An ABC for composable data (e.g. list, tuple, set, and perhaps dict) > to inherit from. An composable object can contain instances of other > composable objects. In other words, a composable object can be used as > the outer container in a nested data structure. [...] > def recurse(sequence): > if isinstance(sequence, Composoble): > for child in sequence: > recurse(child) > else: > print sequence I think I understand your example, but I don't understand what makes it necessary to introduce an ABC for Composable as separate from Iterable. What is intended to be different about Composable? Can you provide a usage example for Composable where Iterable would not be sufficient? -- ?!ng _______________________________________________ Python-3000 mailing list Python-3000@python.org http://mail.python.org/mailman/listinfo/python-3000 Unsubscribe: http://mail.python.org/mailman/options/python-3000/archive%40mail-archive.com
