On Monday, May 7, 2012, Jim - FooBar(); wrote: > On 07/05/12 21:59, Aaron Cohen wrote: > >> You invoke your multimethod with 2 arguments. You need to change your >> dispatch function to take 2 arguments (it can ignore them if you don't need >> them). >> > > Thanks Aaron - it did the trick! I did not realize that multi-methods > cannot be overloaded... > > They can be, you just use either an overloaded or varargs dispatch function.
>> Well, i hate nested ifs so yeah this is a bit clearer and more > extensible. You know very well that there is really only one OS...aaaa and > stinky windows of course! ;-) > I know this is a very common paradigm in OO (with principles such as "prefer polymorphism to nested ifs"). I want to write a longer essay here on my feelings about when to use polymorphism in clojure but not on my iPhone ;) Suffice it to say, there are definitely cases where polymorphism makes sense in clojure, particularly when working with datatypes. I'd recommend thinking about when it's appropriate though, particularly if it's a lingering OO impulse that is causing you to reach for this tool. --Aaron -- 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
