Hi, Am 21.12.2009 um 22:09 schrieb PM:
> I've mocked it up before using structmaps, but I get stuck when it > comes to doing all this with immutable structures. Immutability is no > problem for a system like Lilypond where the score data is fixed when > the program runs, but in a system where some of these items may be > changing as the score is edited, how do you handle that? Returning a > new note via assoc implies that a track's contents would also change, > making it a new track, and so on up the chain. (?) Besides zippers you might also want to look update-in and assoc-in. They work both with maps and vectors. (update-in score [:this-measure :that-stave :the-other-track] modify-track with additional args) (assoc-in score [:this-measure :that-stave :a-new-track] some-new-track) Sincerely Meikel -- 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
