StackOverflow 文件 common-lisp 教程 遞迴 遞迴模板 1 單條件單尾遞迴 遞迴模板 1 單條件單尾遞迴 Created: November-22, 2018 (defun fn (x) (cond (test-condition the-value) (t (fn reduced-argument-x)))) 遞迴列印列表的元素遞迴