Terry Reedy wrote: > > "Daniel 'Dang' Griffith" <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] >> But the factorial example on the wiki has a defect. It incorrectly >> calculates factorial(0) as 0, when it should be 1. > > This is a matter of definition, and definitions apparently differ. fact(0) > == 0 is a backward projection from the definition f(1) = f(2) = 1 in > 1-based systems, which is the context for the rabbit problem in which the > first year is year 1, not year 0. Disagreement is not defect.
No, fact(0)==1 simply because any proper definition of a factorial has to match up with the gamma function (offset by one) at all non-negative integers. So there's no room for any ambiguity here. Regards, f -- http://mail.python.org/mailman/listinfo/python-list
