Hi, 2010/2/25 Meikel Brandmeyer <m...@kotka.de>
> Hi, > > On Feb 25, 11:24 am, reynard <atsan...@gmail.com> wrote: > > I define a function foo in which it calls an auxiliary function bar, > > which is not yet defined, and a compiler exception is raised claiming > > unable to resolve symbol bar. > > > > Is there a way that I can define the functions in any order I want, > > without taking care of defining the auxiliary function first? Thanks. > > (declare bar) > (defn foo ...) > .... > (defn bar ...) > I just thought about it, but a very simple macro one could name 'dotopdown could help organize parts of code in a "top down first" approach: (defmacro dotopdown "children forms inside the call to dotopdown will be evaluated in the reverse order, thus allowing a more 'top down first' approach." [& body] `(do ~@(reverse body))) So you can with have the important functions of a group of related functions written first, and the functions definitions on which the important function relies upon written last. (note you'll need to exactly revert the dependency graph order : if you have f1 -> f2 & f3 , f2 -> f3, then you'll define in this order : [f1, f2, f3], the exact inverse order of [f3, f2, f1]) A little example: (dotopdown (defn print-hello [n] (printf (say-hello n))) (defn- say-hello [n] (str "hello " n))) HTH, -- Laurent -- 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
