Christopher Armstrong <[EMAIL PROTECTED]> wrote: > > On 10/24/05, Josiah Carlson <[EMAIL PROTECTED]> wrote: > > "Should dicts and sets automatically freeze their mutable keys?" > > > > Dictionaries don't have mutable keys, > > Since when? > > Maybe you meant something else? I can't think of any way in which > "dictionaries don't have mutable keys" is true. The only rule about > dictionary keys that I know of is that they need to be hashable and > need to be comparable with the equality operator.
Good point, I forgot about user-defined classes (I rarely use them as keys myself, it's all too easy to make a mutable whose hash is dependant on mutable contents, as having an object which you can only find if you have the exact object is not quite as useful I generally need). I will, however, stand by, "a container which is frozen should have its contents frozen as well." - Josiah _______________________________________________ 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
