Thanks a lot, Armando. Looks like I should switch to Clojure 1.3 asap. Cheers,
Dominikus 2011/5/5 Armando Blancas <armando_blan...@yahoo.com>: > In 1.3 the function will (eval) to itself: > > Clojure 1.3.0-alpha6 > user=> (defn id [x] (list id x)) > #'user/id > user=> (id 7) > (#<user$id user$id@3411a> 7) > user=> (eval (id 7)) > (#<user$id user$id@3411a> 7) > user=> (= (id 7) (eval (id 7))) > true > > On May 5, 6:04 am, Dominikus <dominikus.herzb...@gmail.com> wrote: >> My observation is best distilled with the following definition of a >> function in Clojure 1.2: >> >> user=> (defn id [x] (list id x)) >> #'user/id >> >> Interstingly, (id 7) and (eval (id 7)) result in different instances >> of function id as the number after the '@' char unveils: >> >> user=> (id 7) >> (#<user$id user$id@53797795> 7) >> user=> (eval (id 7)) >> (#<user$id user$id@2de12f6d> 7) >> >> Consequently, the following comparison leads to false: >> >> user=> (= (id 7) (eval (id 7))) >> false >> >> Why is the instance relevant to '='? What is the precise semantics of >> two values being equal in Clojure? >> >> Dominikus >> >> (Remark: In Scheme, the use of 'eqv?' returns also #f, but the less >> restrictive 'equal?' does not and returns #t.) > > -- > 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
