Clojure: Immutability at the Language Level

After I got past the introduction, I liked this article a lot better.

I like to focus on what something says, rather than on how it's written. Unfortunately, the introduction is so tangled and wordy, I found that hard to do.

Example: "In many cases, purists see the essence of immutability as a precondition for any given language to fall into the category of functional programming." As an editor, I might suggest "Purists would say functional programming requires immutability."

Example: "But we can extend the larger picture of immutability beyond the strict ecosystem of data structures alone and instead encompass any object that adheres to the notion of immutability." How about "But immutability applies to more than just data structures."

Happily, where it talks about code, the article is pretty straightforward.

The intro implies that this article is an excerpt from the MEAP edition of The Joy of Clojure. I don't recognize a lot of it from my 4-chapter MEAP copy. Is there a new push due out soon?

Good article! I don't use Clojure much, but the language is fun to code in. I bought the MEAP, and I am looking forward to updates. BTW, I fortunately don't have to code in Java too much anymore, but when I do I have been favoring read-only objects.