I didn't explain my question well enough. Suppose I define a macro with defmacro and have several calls to it in my code. When are those calls expanded to the code inside the macro? Is that at read-time?
On Mon, Apr 20, 2009 at 5:34 PM, Laurent PETIT <laurent.pe...@gmail.com> wrote: > > Hello, > > Apparently, no: > > 1:85 user=> (macroexpand-1 '(defn hello [] "world")) > (def hello (clojure.core/fn ([] "world"))) > 1:86 user=> (read-string "(defn hello [] \"world\")") > (defn hello [] "world") > 1:87 user=> > > read-string did not expand defn. > > I think it's 'eval that expands macros and compiles forms. > > Regards, > > -- > Laurent > > 2009/4/21 Mark Volkmann <r.mark.volkm...@gmail.com>: >> >> In my Clojure article at http://ociweb.com/mark/clojure/article.html I say: >> >> "Clojure code is processed in three phases: read-time, compile-time >> and run-time. At read-time the Reader reads source code and converts >> it to a data structure, mostly a list of lists of lists .... At >> compile-time this data structure is converted to Java bytecode. At >> run-time the bytecode is executed. Functions are only invoked at >> run-time. Macros are special constructs that look similar to >> functions, but are expanded into new Clojure code at read-time." >> >> Is it correct to say that macros are expanded at read-time? -- R. Mark Volkmann Object Computing, Inc. --~--~---------~--~----~------------~-------~--~----~ 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 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 -~----------~----~----~----~------~----~------~--~---
