I originally thought of calling nth on the seq but isn't that pretty wildly inefficient?
On Oct 14, 1:38 pm, Moritz Ulrich <ulrich.mor...@googlemail.com> wrote: > Are you sure you need to capture the state in next-sine? It's not very > clojure-ly to have functions with state. I would capture the state in > the caller as an integer and just use get or nth on the lazy seq. > If you want to stick to your impure function, please mark it with a ! > at the end: next-sine! > > On Thu, Oct 14, 2010 at 9:52 PM, clwham...@gmail.com > > > > > > > > > > <clwham...@gmail.com> wrote: > > I need a function that produces the 'next' value from a lazy-seq -- > > something like a Python generator. I imagine it would have to be some > > sort of closure like: > > > (def next-sine > > (let [sines (atom (cycle (map sin (range 0 6.28 0.01))))] > > #(swap! sines rest))) > > > Is there a more idomatic way of doing this? I don't see a lot of use > > of closures in clojure... > > > -- > > 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 > > Note that posts from new members are moderated - please be patient with > > your first post. > > 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 > > -- > Moritz Ulrich > Programmer, Student, Almost normal Guy > > http://www.google.com/profiles/ulrich.moritz > BB5F086F-C798-41D5-B742-494C1E9677E8 -- 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 Note that posts from new members are moderated - please be patient with your first post. 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
