I've made some updates to the Mutable iterators PEP. http://deprince.net/ideas/pep-dict.txt
For the implementation I'm going to just implement the deleting iter for list and dict. I don't want iter implementors to scurry over their code just to add "nop exception throwers" as delete methods, so I'm calling for the absence of a .delete method to indicate that deleting is not supported. If it quacks ... Also, there is the issue of modification while iterating. Lists don't care at all and dictionaries only care so long as you don't change the current size. I propose that we adopt for the new deleting iterators Java's fast fail semantics. Basically, if the underlying data-store is touched in a way that doesn't make sense (i.e. we touch the dict and it rehashes), we actively tell any still alive iters (weak references are nice for this) As for what qualifies as a compatible or incompatible change will depend on the iterator and backing store implementation of course ... how specific or demanding should we be? On Fri, 2006-03-24 at 23:38 -0800, Guido van Rossum wrote: > On 3/24/06, Adam DePrince <[EMAIL PROTECTED]> wrote: > [Guido] > > > Maybe. I need a volunteer to write the PEP! > > > > Oh, why not. Me me! > > Excellent! Let us know when it's ready or when you'r stuck. > > -- > --Guido van Rossum (home page: http://www.python.org/~guido/) _______________________________________________ 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
