On Oct 11, 2014, at 10:59 AM, Jony Hudson <jonyepsi...@gmail.com> wrote:
> But if any of these Keyword objects were garbage-collected, I think it would > break the parity between identical? and =. The Keyword construction and interning mechanism ensures that whenever there exists at least once (strong) reference to a given Keyword object, all references will be to the same object. A given Keyword object can only be garbage collected if it's garbage--if there are no (strong) references to it currently in existence. That means it's not a key or value in any map, it's not in use by any compiled code, it's not the value of any local, etc. Without any existing strong reference to it, no comparison involving that Keyword object is possible. If at any point in time there are no strong references to it, it's safe to un-intern the Keyword object. If a keyword of that name (and namespace) is needed subsequently, a new Keyword object can be created and interned and the promised identity and equality semantics will be satisfied from that point forward. --Steve -- 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 --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
