[Ben Wing ] >> many times writing somewhat complex loops over lists i've found the need >> to sometimes delete an item from the list. currently there's no easy >> way to do so; basically, you have to write something like
[Adam Olsen] > As I don't believe there's any need for a language extension, I've > posted my approach to this on comp.lang.python: > > http://groups.google.com/group/comp.lang.python/browse_thread/thread/724aa6bcf021cfad/c4c629bd1bacc12b#c4c629bd1bacc12b > > Note that deleting from the list as you iterate over it tends to have > very poor performance for larger lists. My post includes some > timings, demonstrating this. Well said. And even if performance considerations could be addressed, it would be a crummy idea , leading people into knotty code. When looping over a structure, the act of actively inserting and deleting entries, can introduce unexpected feedback between loop control and the loop body. This is a recipe for bugs and hard-to-maintain code. Overall, feature #1 is a non-starter and hopefully this thread will die quickly or move off-list. Raymond _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
