[Python-Dev] Re: heapq method names
Mon, 26 Aug 2002 09:08:05 -0400
>>>>> "TP" == Tim Peters <firstname.lastname@example.org> writes:
TP> That is, it creates a Heap type that's just a list with some
TP> extra methods. Note that the "pop" method can't be named "pop"!
TP> If you try, you'll soon get unbounded recursion because the
TP> heapq functions need list.pop to access the list meaning of
TP> Guido suggested a long time ago that such a class could be added
TP> to heapq, and I like it a lot in real life.
You can't use all of the regular list methods, right? If I'd called
append() an a Heap(), it wouldn't maintain the heap invariant. I
would think the same is true of insert() and lots of other methods.
If we add a Heap class, which seems quite handy, maybe we should
disable methods that don't work.
Interesting to note that if you disable the invalid methods of list,
then you've got a subclass of list that is not a subtype.