Ichiban https://blog.hatena.ne.jp/Ichiban/ Ichibanの日記 https://ichiban.hatenadiary.org/ Scheme リスト構造の中のノード数を数える手続きを考える． (define node-count (lambda (tree) (if (pair? tree) (+ 1 (node-count (car tree)) (node-count (cdr tree))) 1))) 当然末尾再帰になってないからスタックがあふれる．これをCPSに変換するのはちょっとめんどくさい上に読みづらい． (define node-count-cps (letrec ((node-count-iter (lambda (tree k) (if (pair? tree) (node-count-iter (car tree… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fichiban.hatenadiary.org%2Fentry%2F20081107%2F1226006492" title=" ふと思いついたのでCPS - Ichibanの日記" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2008-11-07 06:21:32 rich https://ichiban.hatenadiary.org/entry/20081107/1226006492 1.0 100%