Here's something that could be clearer (it wasn't obvious to me that something like addition would cause a null pointer exception):
user=> (+ 1 nil) java.lang.NullPointerException (NO_SOURCE_FILE:0) Sam --- http://sam.aaron.name On 8 Feb 2011, at 14:01, Stuart Halloway wrote: > This conversation began on Twitter [1] but I want to continue it on the > mailing list as it may be of broader interest. > > The core team is very interested in improving error messages, and relatively > less interested in more code to manipulate stack traces, for the following > reasons: > > (1) The language sits at the bottom, and must solve the problems nobody > higher up can solve. Error messages are created at the point of an error, and > if the language gets it wrong you may not have the information to fix it > later. OTOH, any old library code can reduce a stacktrace. > > (2) Better error messages are easy to implement [2]. Most oddball errors are > in macroexpansion, so there is no runtime cost to doing extra work to improve > error messages. These can be implemented as pure functions, so even a > relative beginner could contribute a patch. > > (3) The clojure.repl/pst macro in 1.3 already provides better control of > stack trace spewage at the REPL. > > Please let us know when you get a misleading error message from a > macroexpansion, so we can make it better. Or contribute a patch along the > lines of [2]. > > Thanks, > Stu > > Stuart Halloway > Clojure/core > http://clojure.com > > [1] http://twitter.com/marick/statuses/33760838540070912 > [2] > https://github.com/clojure/clojure/commit/d694d6d45fb46195ae4de01aab9a2b9f9c06355f > > -- > 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 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
