In this branch https://github.com/clojure/clojurescript/compare/master...checked-arithmetic, I've implemented one possible approach to checked arithmetic for ClojureScript. In Clojure this means checking for overflow. In JavaScript a much more common source of error is type coercion from the arithmetic operators as well as the introduction of Infinity and NaN.
These changes would prevent the production of NaN and Infinity at least from within ClojureScript itself. Also operations like: (+ 1 2 "3") fail instead of producing "33" Of course such changes would impose a performance hit. You can currently toggle the behavior with the following macro: (set-unchecked-arithmetic! true) This is useful when writing performance sensitive code. Feedback, improvements appreciated. David -- 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
