2013/3/25 Jim foo.bar <jimpil1...@gmail.com> > if I declare a Integer/String object as private & final within a class, is > there a way to mutate it?
Strings are immutable but they are backed by arrays. You can create a native extension that will mess with that array. Does this count as "true immutability" to you? It certainly works out just fine for the majority of Java code and developers out there. In contrast, Ruby strings are mutable and it routinely causes annoying issues even without concurrency. Numerical types are immutable but there are subtle moments, too: writes to longs and doubles are not guaranteed to be atomic [1], so there is a special class in the java.util.concurrent.atomic package [2]. Not sure how strings and numerical types fit into this discussion about collection mutability. 1. http://docs.oracle.com/javase/specs/jls/se7/html/jls-17.html#jls-17.7 2. http://docs.oracle.com/javase/7/docs/api/java/util/concurrent/atomic/AtomicLong.html -- MK http://github.com/michaelklishin http://twitter.com/michaelklishin -- -- 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/groups/opt_out.
