233 messages long thread from June 2010, http://groups.google.com/group/clojure/browse_thread/thread/c8c850595c91cc11/171cacba292a0583
David On Tue, Oct 18, 2011 at 5:00 PM, nathanmarz <nathan.m...@gmail.com> wrote: > Hey all, > > I recently started upgrading Storm to Clojure 1.3, and I ran into > various issues due to Clojure's treatment of integers and longs. In > particular, I have a situation like the following: > > 1. A Java object returns me an int. Let's call this value "v". > 2. I put "v" into a map, and pass that map into a Java object > 3. I get ClassCastExceptions when that Java object tries to read that > Integer and instead gets a Long back > > The error arises due to Clojure's auto-coercion of primitive ints to > longs. > > Auto-coercing ints to longs is prone to errors like I ran into, > especially when interoperating with Java code. It becomes especially > confusing when considering that "Integer" objects do not get coerced > to "Long" objects. Also, if Clojure is trying to treat everything as > longs, I don't understand why there's an unchecked-divide-int function > and not an unchecked-divide-long function. > > What's the rationale behind all this? Why not support both ints and > longs? I'm sure this has been discussed before, so feel free to point > me to earlier discussions on this. > > -Nathan > > -- > 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
