22 lines
564 B
Common Lisp
22 lines
564 B
Common Lisp
(defun mapcar (function-name the-list)
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(if the-list
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(cons
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(funcall function-name (first the-list))
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(mapcar function-name (rest the-list)))))
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(defun maplist (function-name the-list)
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(cond
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((null the-list) nil)
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(t (cons (funcall function-name the-list)
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(maplist function-name (rest the-list))))))
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(defun append (listA listB)
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(cond
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((null listA) listB)
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(t (cons (first listA) (append (rest listA) listB)))))
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(defun nth (n listA)
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(cond
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((equal 0 n) (first listA))
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(t (nth (- n 1) (rest listA)))))
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