And the problem with the plain (keyword x) approach is how the namespace resolving works in that case. I can see that some things have been improved in Clojure 1.1 compared to 1.0, but there is still one thing:
In 1.1. if I call (keyword 'foo/bar) i'll get :foo/bar. OK, because the namespace is explicitly mentioned in the call. But, if I want to create keyword from any var imported from another namespace, using a macro to create a symbol: (defmacro [sym] `(keyword '~sym)) (ns foo) (def bar "A") (ns user) (use foo) (to-keyword bar) ;; note that bar is actually the foo/bar :bar ;;it should be :foo/bar! On Aug 25, 12:47 pm, Dragan Djuric <draga...@gmail.com> wrote: > I needed a macro if I wanted to avoid ' in calls. It may seem as > nitpicking but (to-keyword name) is more readable and less error prone > than (to-keyword 'name) if I need to use it in lots of places. > > On Aug 24, 8:38 pm, Achim Passen <achim.pas...@gmail.com> wrote: > > > Hi! > > > Am 24.08.2009 um 18:31 schrieb Dragan Djuric: > > > > I needed (and created) a macro to generate keywords from symbols. I > > > couldn't find anything ready, and I am still not completely > > > comfortable with the solution I came up with. Any suggestions for > > > improvement? > > > If I understand you correctly, you'd like to convert symbols which > > name vars to keywords qualified with the namespace which contains the > > var's definition. You don't really need a macro for that, a regular > > function will do. Here's a version using var metadata: > > > (defn resolve-to-kw [sym] > > (let [md (meta (resolve sym))] > > (keyword (-> md :ns ns-name name) (-> md :name name)))) > > > Hope this helps. > > > Kind Regards, > > Achim --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
