Not that I have any immediate use for this at the moment, but I +1 your proposal. I make use of the ?. operating in Groovy, and it can be helpful.
On Mar 10, 4:08 am, Laurent PETIT <laurent.pe...@gmail.com> wrote: > Hello, > > 2009/3/10 Jason Wolfe <jawo...@berkeley.edu> > > > > > > > > > > (let [person (get-the-person)] > > > (when-not (nil? person) > > > (let [address (.getAddress person)] > > > (when-not (nil? address) > > > (let [street (.getStreet address)] > > > (when-not (nil? street) > > > (do-something-finally-with-street street))))) > > > ?-> sounds potentially useful to me, but let me also point out that > > you could simplify the above to: > > > (when-let [person (get-the-person)] > > (when-let [address (.getAddress person)] > > (when-let [street (.getStreet address)] > > (do-something-finally-with-street street)))) > > No, because here, you could also short-circuit on the value false , and not > only nil. > And it's definitely what I had in a first attempt, and wanted to avoid : > having to think about variable names and add several nested levels of lets. > > > > > Not quite > > > (?-> (get-the-person) #(.getAddress %) #(.getStreet %) do-something) > > > but it's halfway there at least. > > > Info on contributing is here: > > >http://clojure.org/contributing > > > The first step is to get your CA signed and in the mail. > > Yes you're right, I already have sent my CA, and will re-read this page. > > But I thought that before proposing something (even for clojure-contrib), it > would be interesting to see if what I would like to propose sounds > interesting to more than one person :-) and if somebody having commit rights > on clojure-contrib informally accepts the contrib, before creating an issue > with the patch attached ? > > > > > > > Thanks, > > Jason --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
