On Jan 29, 2008 11:34 AM, Raymond Hettinger <[EMAIL PROTECTED]> wrote: > [GvR] > > I don't see why. __index__ has a slot because its > > primary use is to be called from C code, where slots > > add a slight performance advantage. > > __trunc__ doesn't get called from C AFAIK. > > I thought the __trunc__ method only gets called from > the C code for the trunc() function which is currently > implemented with PyObject_CallMethod(number, "__trunc__", "") > instead of a fast call to a slot.
I see. Well, it would bounce around a bit but it would never execute Python byte codes. I don't see trunc() being all that performance critical. The cost of adding a new slot is considerable -- for one, *all* type objects become 4 (or 8) bytes longer. -- --Guido van Rossum (home page: http://www.python.org/~guido/) _______________________________________________ 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
