On 09/01/13 18:20, Jim - FooBar(); wrote:
Alex's solution is also quite idiomatic and it takes care of the transient/peristent conversion as well...It seems slightly heavier though cos you're building an intermediate vector.
CORRECTION: you'd be building MANY intermediate vectors...as many as your keys in the old-map...
In addition, as a bonus, in case your old-map is truly massive you can partition it and reduce/fold it in parallel really easily with reducers...see this for more: http://www.thebusby.com/2012/07/tips-tricks-with-clojure-reducers.html
So, normal map -> 'reduce-kv' or 'into'/'for' big map -> 'reduce-kv' with transients massive map -> 'fold' (reducers) Hope that covers everything :) Jim -- 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
