This is a situation where I reach for eval. Construct your reify call as if you were inside a macro, but instead of returning data from the macro, call (eval form). The call to reify will be slow (and could cause permgen problems), but if you wrap the form in a function you can cache the function and avoid that problem. Something like:
(let [cache (atom {})] (defn implement-at-runtime [interface-name method-name & body] (if-let [result (@cache [interface-name method-name body])] (result) (let [f (eval `(fn [] (reify ~interface-name (~method-name ~@body))))] (swap! cache assoc [interface-name method-name body] f) (f))))) @(implement-at-runtime 'clojure.lang.IDeref 'deref '[this] 42) ;; returns 42 Timothy On Fri, Apr 24, 2015 at 8:14 AM, Steven Deobald <ste...@nilenso.com> wrote: > Okay, Brian. I'll bite. :) > > I don't have the answer for you, but I'm definitely curious what your use > case is. Whatcha upto? > > Steven Deobald -- ⌀ -- nilenso.com > > On Fri, Apr 24, 2015 at 7:18 PM, Brian Guthrie <btguth...@gmail.com> > wrote: > >> Hi all, >> >> Is there a good way to reify protocols programmatically, i.e., by passing >> data structures rather than dropping down into a macro? reify bottoms out >> in reify*, which doesn't help much. >> >> Thanks, >> >> Brian >> >> -- >> 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 unsubscribe from this group and stop receiving emails from it, send an >> email to clojure+unsubscr...@googlegroups.com. >> For more options, visit 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 > --- > 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. > For more options, visit https://groups.google.com/d/optout. > -- “One of the main causes of the fall of the Roman Empire was that–lacking zero–they had no way to indicate successful termination of their C programs.” (Robert Firth) -- 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 unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.