Learning functional/Clojure programming - practical exercises?

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Answer 1

4clojure was launched recently. It takes a lot of inspiration from Functional Koans, and several of the puzzles from 99 Lisp Problems; but it improves on both by providing a learning experience for which you need only your browser.

Problems vary in difficulty from language tutorials like What is the second element of this list? to thought-provoking questions like Is it possible to arrange these N words so that each differs from the preceding one by at most one character, and more problems are being added every day.