Question

I’m using ordered-set for some stuff in Clojure 1.3.0. My project.clj includes [ordered "1.1.0"].

When I call (str (ordered-set 1 2 3)) I get "ordered.set.OrderedSet@6" but when I call a normal clojure hash-set (str (hash-set 1 2 3)) I get the correct "#{1 2 3}" as a result.

The str method calls .toString somewhere, so how do I override the .toString method for ordered-set so I can get a proper string out of it?

thanks

Answer 1

Well, there are two answers to this question. One is, the lazy maintainer of ordered (me) should get his act together and implement toString. The other is, you probably shouldn’t be using str on anything where you care about readability – pr-str is a much more reliable data-presentation function. For example, (str {:a 'a}) and (str {:a "a"}) both result in "{:a a}". With pr-str the type information remains.