thanks! sun
On Feb 14, 4:34 pm, Brian Doyle <brianpdo...@gmail.com> wrote: > On Sat, Feb 14, 2009 at 2:24 PM, wubbie <sunj...@gmail.com> wrote: > > > Hi, > > > a quick question: > > > user=> (keys {:a 1 :b 2}) > > (:a :b) > > > But > > user=> (key {:a 1}) > > java.lang.ClassCastException: clojure.lang.PersistentArrayMap cannot > > be cast to java.util.Map$Entry (NO_SOURCE_FILE:0) > > > I see defn key in core.clj, though. > > What can be the correct usage of fn key, then? > > Here is the correct usage of fn key: > > 1:1 user=> (key (first {:a 1})) > :a > > Key only accepts a map entry and not a Map object. > > > thanks in advance, > > -sun > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---