On Jul 9, 2011, at 6:16 PM, Sean Corfield wrote: > If I need a function to have something like the following signatures, > what's the most idiomatic way to do it: > > ([fn-arg str-arg vec-arg & others] ...) > ([str-arg vec-arg & others] ...) > > Background: several functions in clojure.java.jdbc are already > variadic but as part of JDBC-6 I want to enable users to pass in an > optional function to tweak the PreparedStatement before it is > executed. My options seem to be ugly code to test types at the start > of the argument lists or to add in optional keyword arguments at the > end of the argument list (which still means processing the arguments > and doing sort of type testing but which feels a bit cleaner).
Keywords args are a viable option, and they don't necessarily have to come at the end of the varargs. Type-testing feels really ugly and Perlish to me. The only other options I see are to wrap the varargs in a vector, or to create two functions with different names. I don't think there's one "idiomatic" way to do it; it depends on your constraints and preferences. -- 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
