> user=> (macroexpand-1 '(memfn add x y)) > (clojure.core/fn [target__4193__auto__ x y] (. target__4193__auto__ > (add x y))) > > That is, basically (fn [object x y] (.add object x y)).
.add is macroexpanded into the more general dot form, as shown in the memfn expansion. user=> (read-string "(.foo bar)") (.foo bar) user=> (macroexpand-1 *1) (. bar foo) http://clojure.org/java_interop#dot > (doc .add) throws an exception rather than recognizing it as a > special form doc looks up the docstring of a var. If the argument isn't a var, it will throw an exception. If you break your contract with Clojure and make a var with a dot-name anyway, doc will work: user=> (def .add 5) #'user/.add user=> (doc .add) ------------------------- user/.add nil nil nil > or similarly, though you also get strange errors if you try to > use .add as a variable name.) "Symbols beginning or ending with '.' are reserved by Clojure.". http://clojure.org/reader You don't get errors if you use .add as a var or the name of a symbol (see above), though you're disobeying the docs. You do get an error if you use it as the name of a local binding symbol: user=> (let [.foo 5]) java.lang.ClassFormatError: Illegal field name ".foo" in class user $eval__10 (NO_SOURCE_FILE:0) When you think about what this is actually doing in terms of Java classes, this message makes sense. -R --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
