I'm trying to understand the programming philosophy expressed in some of the videos, as it relates to dealing with data with different representations. There's a lot of emphasis on working with basic collection types, not using getters and setters, and so-forth.
I have a fairly common scenario where I have a set of operations that need to work on two types of data (not "data types" in the clojure sense) that have different internal structure (i.e. maps with different keys). I could write a generic function that operates on both types of map. That would require implementing getters for each type (not sure where those would live). Alternatively, I could use a type-based dispatch, which means converting to records. Does that mean I'm in my "defrecord phase", as Stuart put it in the video? Or perhaps I could stick with maps and use a multimethod for dispatch? But dispatch by type and dispatch with multimethod both involve implementing all the algorithms twice, unless the methods I'm dispatching to are just getters (in which case I can write a generic algorithm that uses the getters). I don't think I understand the alternative to getters or the "defrecord phase". Have I missed something by arriving at this point in the first place (i.e. thinking I need polymorphic functions)? -- 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
