On Apr 3, 7:37 am, Alex Ghitza <[EMAIL PROTECTED]> wrote: > I guess this is a question of convention, and depends on how you think > of "digit": > > (1) a digit is a symbol used to construct representations of numbers, > and so the base 10 digits are: "0", "1", ..., "9". In this case, > 0.ndigits() should return 1 and 0.digits() should return [0] > > (2) when writing an integer n in base b, you compute a b-adic expansion > n = d_0 + d_1*b^1 + d_2*b^2 + ... + d_k b^k > with d_k nonzero; you call the d_i the "digits" of a. Then 0 *has no > such expansion*, therefore 0.digits() should return [] and 0.ndigits() > should return 0.
I have a slight preference for (2), but I would be happy either way as long as everything is consistent and documented. Carl --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-devel@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
