> For example, what if I have a hash-map that needs to handle concurrent > changes to the data structure, but never needs to have concurrent > changes to a given piece of data (i.e a key/value pair). Wouldn't > there be value in being able to modify the data "in-place" without > making a copy, or needing to endure the overhead associated with STM?
Hi Trevor, You should endure the overhead of the STM if you need what the STM provides: coordination of activity across identities. But there are several things in Clojure that provide identities without STM. In your example, you could place a map inside an atom, which provides atomic transitions between values, but no coordination. Abandoning values entirely should be highly motivated by a specific need. If you're there, then Java's concurrent maps are good and appropriate. Stuart Halloway Clojure/core http://clojure.com -- 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
