Which version of clojure? This works fine in 1.10 Clojure 1.10.0-master-SNAPSHOT user=> (set! *warn-on-reflection* true) true user=> (definterface Interface (test [])) user.Interface user=> (def p (proxy [Object Interface] [] (test [] 1))) #'user/p user=> (defn get-test [o] (.test ^Interface o)) #'user/get-test user=> (get-test p) 1
> On 30 Jul 2018, at 11:26, Mark Engelberg <mark.engelb...@gmail.com> wrote: > > Those fishy things were errors I made when simplifying and transcribing the > proxy to post, but I have it correct in my own code. > > Here's a more precise, tested minimal example: > > (definterface Interface (test [])) > (def p (proxy [Object Interface] [] (test [] 1))) > (defn get-test [o] (.test ^Interface o)) > > => (get-test p) > This throws an error that it can't cast the proxy to Interface. > > If you remove the ^Interface type hint, then get-test will work but will > trigger reflection. > > Thanks for looking at this. It seems like it should work, but it doesn't. > > > On Mon, Jul 30, 2018 at 3:06 AM, Nicola Mometto <brobro...@gmail.com > <mailto:brobro...@gmail.com>> wrote: > That's exactly what you should do and it does work, e.g.: > > user=> (set! *warn-on-reflection* true) > true > user=> (.meta ^clojure.lang.IMeta (proxy [clojure.lang.IMeta] [] (meta [] {:a > 1}))) > {:a 1} > > In your small example you have two errors that might be fishy: a missing arg > vector to pass to the super ctor and an extra `this` parameter in the method > impl (proxy, unlike reify, is anaphoric and binds `this` for you) > > >> On 30 Jul 2018, at 10:56, Mark Engelberg <mark.engelb...@gmail.com >> <mailto:mark.engelb...@gmail.com>> wrote: >> >> Let's say I have a proxy object: >> >> (def p (proxy [MyClass MyInterface] (interfaceMethod [this] ...))) >> >> Now, I want to call (.interfaceMethod p). How do I do this without >> reflection? >> I would have thought that (.interfaceMethod ^MyInterface p) would work, but >> this results in an error message that this proxy object cannot be cast to >> MyInterface. >> >> >> >> -- >> 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 >> <mailto: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 >> <mailto:clojure+unsubscr...@googlegroups.com> >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> <http://groups.google.com/group/clojure?hl=en> >> --- >> You received this message because you are subscribed to the Google Groups >> "Clojure" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com >> <mailto:clojure+unsubscr...@googlegroups.com>. >> For more options, visit https://groups.google.com/d/optout >> <https://groups.google.com/d/optout>. > > > -- > 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 > <mailto: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 > <mailto:clojure%2bunsubscr...@googlegroups.com> > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > <http://groups.google.com/group/clojure?hl=en> > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com > <mailto:clojure+unsubscr...@googlegroups.com>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. > > > -- > 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 > <http://groups.google.com/group/clojure?hl=en> > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com > <mailto:clojure+unsubscr...@googlegroups.com>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "Clojure" group. 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