The :import will work as well, as long as the :require comes first. - Chas
On Feb 15, 2012, at 12:17 PM, Jay Fields wrote: > interesting, the trick is to use foo.recs.ARecord... > > (extend-protocol AProto > foo.recs.ARecord > (handle [o] > ;; do stuff > )) > > Thanks for that. > > On Wed, Feb 15, 2012 at 11:31 AM, Chas Emerick <c...@cemerick.com> wrote: >> No; just add a (:require foo.recs) to the ns form of foo.prots, so the >> defrecord form(s) can be loaded; this will generate the classes at runtime, >> and avoid any ahead-of-time compilation. >> >> In general, AOT is rarely necessary, and almost always a hinderance. >> >> - Chas >> >> On Feb 15, 2012, at 11:13 AM, Jay Fields wrote: >> >> again, I haven't felt much pain, so I'm not sure what I'm saying is entirely >> true, but... >> >> In the scenario I describe I have to :import the class created by defrecord >> to reference it as part of extend-protocol >> >> For example >> >> in foo/recs.clj >> (ns foo.recs) >> >> (defrecord ARecord [a b]) >> >> in foo/prots.clj >> (ns foo.prots >> (:import [foo.recs ARecord])) >> >> (defprotocol AProto >> (handle [o])) >> >> (extend-protocol AProto >> ARecord >> (handle [o] >> ;; do stuff >> )) >> >> In that case, don't you need to record to become a class, so you can >> reference it in foo.prots :import? >> >> I'd really love to be wrong, so I get rid of this occasional issue. =) >> >> Cheers, Jay >> >> On Feb 15, 2012, at 10:51 AM, Stuart Halloway wrote: >> >> I think this issue is related to using >> defrecord >> or >> defrecord & defprotocol >> or >> defrecord, defprotocol, & extend-protocol >> >> I've never bothered to look into the simplest case at which it fails. I have >> a namespace that has my defrecord, and another namespace that defines the >> protocol and uses extend-protocol to add behavior for my record type. If I >> recompile the namespace with the protocol everything is fine, if I recompile >> the namespace with the defrecord the protocol stops finding the >> implementation for the protocol. The solution is "rm -rf classes" >> >> As a work around I rm & restart my app if I ever change my record - which is >> very rarely. >> >> >> A better solution is not to compile defrecords during development. If this >> is the default behavior of some tools, it is anti-incremental-dev and wrong >> IMO. >> >> Stu >> >> >> Stuart Halloway >> Clojure/core >> http://clojure.com >> >> >> -- >> 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 >> >> >> -- >> 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 -- 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
