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November 23, 2012 08:27
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doseq-indexed
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| ;; Example: | |
| ;; (doseq-indexed idx [name names] | |
| ;; (println (str idx ". " name) | |
| (defmacro doseq-indexed [index-sym [item-sym coll] & body] | |
| `(let [idx-atom# (atom 0)] | |
| (doseq [~item-sym ~coll] | |
| (let [~index-sym (deref idx-atom#)] | |
| ~@body | |
| (swap! idx-atom# inc))))) |
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A live version of this gist: http://blog.klipse.tech/clojure/2016/05/09/macro-tutorial-4.html