check out clojure.core/comp, and it's source 2012/8/25 John Holland <jbholl...@gmail.com>
> This problem is really confusing me. I found a solution online, but I > can't understand the solution. Can anyone explain to me why this > works? > > The problem is stated as: > > > > Write a function which allows you to create function compositions. The > parameter list should take a variable number of functions, and create > a function applies them from right-to-left. > (= [3 2 1] ((__ rest reverse) [1 2 3 4])) > (= 5 ((__ (partial + 3) second) [1 2 3 4])) > > > The examples would accept the solution replacing the ____. > > The solution I found is: > > (fn [x & xs] > (fn [& args] > ((fn step [[f & fs] a] > (if fs > (f (step fs a)) > (apply f a))) > (cons x xs) args))) > > > This works, and baffles me when I try to understand it. > > -- > 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 > -- 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
