Hi all, in the JIRA issue
http://dev.clojure.org/jira/browse/CLJ-308?focusedCommentId=35149&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-35149 Brandon Bloom mentioned that instead of extending a protocol upon existing interfaces using `extend` (or `extend-protocol`, `extend-type`), one could also use a (non-documented) :on-interface directive provided by `defprotocol` which would be much faster, and he gave this example code: (defprotocol Closeable :on-interface java.io.Closeable (close [this])) I have a couple of questions about that: 1. Where's the difference between extension and using that directive, especially what makes it faster? 2. If I'd want to use that, how would I add an implementation for it? E.g., in the case above, where would I write that closing a java.io.Closable should happen with (.close this)? 3. Can the :on-interface directive also get a vector of interfaces, e.g., :on-interface [java.io.Closable my.other.Interface]? Thanks, 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 --- 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.
