44 lines
1.3 KiB
Common Lisp
44 lines
1.3 KiB
Common Lisp
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(defun extend-null (the-list)
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(cond
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((equal (length the-list) 0) t)
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(t nil)
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)
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)
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(defun mapcar (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 (first the-list))
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(mapcar function-name (rest the-list))))
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)
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)
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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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)
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)
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(defun extend-apply (function-name param-list)
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(eval (cons function-name param-list)))
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(defun second (listA) (first (rest listA)))
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(defun third (listA) (first (rest (rest listA))))
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(defun fourth (listA) (first (rest (rest (rest listA)))))
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(defun fifth (listA) (first (rest (rest (rest (rest listA))))))
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(defun sixth (listA) (first (rest (rest (rest (rest (rest listA)))))))
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(defun seventh (listA) (first (rest (rest (rest (rest (rest (rest listA))))))))
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(defun eighth (listA) (first (rest (rest (rest (rest (rest (rest (rest listA)))))))))
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(defun ninth (listA) (first (rest (rest (rest (rest (rest (rest (rest (rest listA))))))))))
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(defun tenth (listA) (first (rest (rest (rest (rest (rest (rest (rest (rest (rest listA)))))))))))
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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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)
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)
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