> But name is multiply evaluated. This might be preferable: Hi John,
Could you explain this a bit more for me? I can understand if the condition is duplicated that is unnecessary calculation but don't appreciate the issue with the binding name... both versions of the macro seem to expand to identical code: user=> (macroexpand-1 '(while-let [a nil] (foo))) (clojure.core/loop [] (clojure.core/let [a nil] (clojure.core/when a (foo) (recur)))) So my naive view was they would have identical behaviour/performance. I've heard this come up before but never understood or been able to find any reference about this 'issue'. Regards, Tim. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
