So I have the 3rd edition hard copy which is how as a newbie I was confident there was an error.

I’m comming back to Clojure for fun so thought I’d get the latest edition and start with that.

In the 4th edition PDF I have. I haven’t seen the printed copy yet.

(defn blank? [str]
  (every? Character/isWhitespace str))

Versus the 3rd edition in the Clojure is Elegant seciton and inside the examples downloaded source.

(defn blank? [str]
  (every? #(Character/isWhitespace %) str))

Which works. It makes me wonder how the book was made if it was from a LaTex source file say and the examples were sourced from an old zip. That would mean every errata that applied to the early 3rd editionalso applies to the fourth edition. If each chapter is generated unique and the examples are hard wired then errors could be confined to each chapter.

That’s all.

Daniel