2009/11/3 Alex Osborne <a...@meshy.org>: > > Sean Devlin wrote: >> This is slightly unrealted, but how does one pronounce ->, ->> and the >> like? Is this documented? > > The doc-strings usually give you a nice hint. I usually use "thread" > for -> and "thread last" for ->>. The actual symbols I think of as > "arrow" and "double arrow". > > Then -?> in contrib is "short-circuiting thread". Not sure about the > symbol, perhaps "questionable arrow"? ;-)
The question mark ? is there to "mimic" (somewhat) what one can find in OO languages such as groovy (I think it's groovy, is it ?) : someObject.?propA.?prop2 where .? will check if the object is null before trying to get a property (or method) on it. If null : returns null, if not null, returns the property etc. Initially i wanted to name it ->? but the final ? is by convention reserved for predicates, so Rich suggested -?> (and also .?. for the .. equivalent). -- 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
