Editing trees in #clojure with clojure.zip (here, via @marick) -- clojure.zip is a functional traverse and modify (well, create modified copies of) trees. How to use this library is not immediately obvious, and this article explains how to use them.
The Joy of Clojure: Thinking the Clojure Way - Book Review (here, via @ibmkhd) -- "reading "Joy of Clojure" might actually require the reader to use a dictionary, as the lexical range used by the authors is broad and might be a barrier". I disagree, english is my third language and I didn't need a dictionary. I even got some of the jokes! This is a horribly shallow review, actually.
Did you know about linear search in #clojure? (here, via @kotarak) -- Short article explaining how 'contains?' works (which seems to confuse a lot of people) and how 'some' is a very useful higher-level function for finding elements in a sequence.
"at the moment we believe #fsharp and #clojure to be better suited to most organisations for assessing than #scala" (here, via @ptrelford) -- Technology Radar is an advisory publication by the IT consultancy ThoughtWorks that periodically reviews new technologies and assesses their levels of maturity and desirability for IT customers. Well, in this issue they are continuing to favor Clojure over Scala... aaaand now it is time to run for cover ;)