Created
June 29, 2012 22:06
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do-until
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| (defmacro do-until [& clauses] | |
| (when clauses | |
| (list | |
| `when (first clauses) | |
| (if (next clauses) | |
| (second clauses) | |
| (throw (IllegalArgumentException. | |
| "do-until requires an even number of forms"))) | |
| (cons 'do-until (nnext clauses))))) |
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| (do-until | |
| true (println "Line 1") | |
| nil (println "Line 2") | |
| true (println "Line 3")) | |
| ; => "Line 1" |
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