Hi Tassilo Perfect answer - the fog is definately beginning to lift!
Do you know why Clojure automatically dereferences functions but not for other bound values? cheers Dave On Apr 23, 1:36 pm, Tassilo Horn <tass...@member.fsf.org> wrote: > David Simmons <shortlypor...@gmail.com> writes: > > Hi David, > > > Presumably this only applies to functions? > > No, not really. > > > If I replace (defn foo [] "hello") with (def foo "hello") I don't get > > the same results. Is this because functions are handled differently? > > --8<---------------cut here---------------start------------->8--- > user> (def foo "hello") > #'user/foo > user> (def a foo) ;; a has the current value of foo > #'user/a > user> (def b #'foo) ;; b's value is the Var foo > #'user/b > user> (def foo "goodbye") > #'user/foo > user> a > "hello" > user> b > #'user/foo > user> @b > "goodbye" > --8<---------------cut here---------------end--------------->8--- > > Please note that you have to dereference b explicitly to get the value > currently bound to foo. That's because b's value is again a Var. It > seems that Clojure dereferences Var's automatically, possibly multiple > times, in case of function calls. So in Stuard's example, both (b) and > (@b) call the function currently bound to foo. > > Bye, > Tassilo -- 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
