So I understand that we're supposed to discuss ideas here to try to gain "mindshare" which is why last week I brought up the issue with Clojure missing mod (which works differently from rem on negative numbers). So really, no one else cares about this, or was the post just lost in the shuffle of holiday time?
On Mon, Dec 22, 2008 at 4:04 AM, Mark Engelberg <mark.engelb...@gmail.com> wrote: > Anyone know why there is no modulo or mod function in Clojure's core? > I know there is a rem function, but that's not the same thing. mod > and rem behave differently when the first number is negative. > > (mod -2 5) -> 3 > (rem -2 5) -> -2 > > modulo n is important for making things stay in the range from 0 to > n-1, for example, if you're working with vectors of length n. You > need to ensure that negative numbers wrap around to the positive > range. rem does not do this. > > I'm more familiar with Scheme than CL, and I know PLT Scheme provides > both modulo and remainder. But according to the Wikipedia > (http://en.wikipedia.org/wiki/Modulo_operation), Common Lisp also > provides both mod and rem functions. So why not Clojure? Is it a > Java defeciency? > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
