Thanks, it was get-in that I was looking for, but couldn't find. Also thanks to Dave for explaining that keywords have some internal magic compared to strings. will remember!
On Thursday, 31 May 2012 19:22:50 UTC+2, Alan Malloy wrote: > > Yes, but really to GET a value nested IN a series of maps, he should > just be using get-in, rather than threading anything at all. > > On May 31, 7:59 am, Dave Ray <dave...@gmail.com> wrote: > > Keywords implement IFn meaning they can act as functions that look > > themselves up in a map. Strings are just strings. Replace "b" with > > (get "b") and you'll get the behavior you're looking for. > > > > Dave > > > > On Thu, May 31, 2012 at 7:55 AM, Boris V. Schmid <boris.sch...@gmail.com> > wrote: > > > > > > > > > > > > > > > > > Can someone tell me what I'm overlooking (clojure 1.4) > > > > > (-> (hash-map :b (hash-map :a 3)) :b :a) > > > 3 > > > user> (-> (hash-map "b" (hash-map :a 3)) "b" :a) > > > ; Evaluation aborted: java.lang.String cannot be cast to > clojure.lang.IFn > > > > > I'm not sure why the first can work, and the second cannot. Is it a > logical > > > limitation of the language, or an oversight in how the macro -> is > build? > > > > > -- > > > 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
