On 12 Dec 2009, at 01:14, Jason Wolfe wrote: > A very simple example is: I have a protocol "A", and sub-protocols > "A1" and "A2". Every A is either an A1 or A2, but not both (and this > split is closed, as far as I'm concerned). Sometimes I want to deal > with instances of A1 and A2 together, and so I put the methods shared > between all "As" in protocol "A". But, at some point I need to > separate out the "A1"s from the "A2"s. To do this, it seems like I > have at least three options:
Those are the options you have in the world of protocols, types/ classes, and hierarchies. But there are many more options for classifying objects. For example, you could have a set A1 to which you add all the types in your A1 category. Or you could call functions specific to A1 or A2 through a lookup table implemented as a map. I can't judge if any of these would work fine for you, of course. Konrad. -- 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
