Hi Brian, (1) What does it mean to be equal on id and not equal on the other fields? If two fields claim the same id but a different name, how would you know which one to keep?
(2) Given some answer to #1, why not store the structs in a map under id? (3) For the geocoded place struct, I would be tempted to just create a separate defstruct. Nothing in Clojure prevents the two different kinds of structures from being substituted for one another. You could look into make-hierarchy, etc. plus defmulti if you find that you need inheritance-like behavior for method dispatch. Stuart > I'm attempting to learn Clojure with a long history of OO and have > some > questions. I've created a defstruct for a place type object like: > > (defstruct place :id :name :street :city :state :zip) > > I want to write a function that would take a list of places and remove > the duplicates. Duplicates are defined by places having the > same :id. > I created a 'place' namespace and attempted to create a function > called '=' that would only use the :id to compare two places, however, > I was not about to create such a function name. Is there a preferred > function name for equality in this case? > > Coming from an OO background and wanting a geocoded-place > struc is there a way to "inherit" from the place struct? Something > like take all of the existing keys from the place struct and also add > :latitude & :longitude? > > Thanks. > > > > > > > --~--~---------~--~----~------------~-------~--~----~ 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 To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
