On Saturday 29 November 2008 06:45, Stephen C. Gilardi wrote: > On Nov 29, 2008, at 9:30 AM, Randall R Schulz wrote: > > Is it a reader bug? (That the second apostrophe appeared to be > > ignored.) > > It wasn't ignored. It quoted the string.
Yeah, Robert made me see that. > I've been interested in a way to see what the reader returns for > things like this in the past. > > It turns out we can get that using macroexpand: > > user=> (prn (macroexpand '(interpose '.' "The quick brown fox"))) > (interpose (quote .) (quote "The quick brown fox")) > > (I hadn't thought of macroexpand expanding reader macros as well as > non-reader macros, but that's the effect here.) I think the reader is doing "expanding" on reader macros. Macro-expand is just nilpotent when no macros are in play. In this case, it's no different than just printing the list you passed to macroexpand: user=> '(interpose '.' "The quick brown fox") (interpose (quote .) (quote "The quick brown fox")) It's a good technique, though, to see what the compiler is going to be asked to translate after all players between the form as submitted and the compiler have done their thing. > --Steve Randall Schulz --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
