One of my favorite features of Coffeescript (and other languages) is destructuring assignment, which lets you use pattern matching over an object to pull out values from nested structures. It's way more useful than this proposal: brief when you want brevity, but you still get the full object returned from the method when you need to debug, and apis don't have to be adapted or rewritten with the usage pattern in mind.
The point was not "Coffeescript is better than Clojure", it was "destructuring assignment (like in Coffeescript, for instance) is a better solution than the one proposed in the post". If Clojure has sophisticated destructuring assignment, awesome. Use that instead.
I suppose I failed to see how destructuring assignment on hash-maps accomplishes anything interesting at all related to the post. The post eliminates hash-maps altogether.
