Created
November 10, 2011 14:27
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Lisp flatten a list
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| ;Flattens a list, e.g., ((a b) ((c)) d) -> (a b c d) | |
| (defun flatten (li) | |
| (cond ((null li) nil) | |
| ((atom li) `(,li) ) ;;THIS CONFUSES ME :( | |
| (t (mapcan #'flatten li)))) | |
| (print (flatten `(a (a b) (a b (a c))))) |
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