sicp-zemi https://blog.hatena.ne.jp/sicp-zemi/ SICPゼミ https://sicp-zemi.hatenablog.jp/ 練習問題4.7 (define (let*->nested-lets exp) (let ((defs (car exp)) (body (cdr exp))) (if (null? (cdr defs)) (list 'let (car defs) body) (list 'let (car defs) (let*->nested-lets (pair (cdr defs) body)))))) by dolicas 問題文で言ってる派生式でうまくいくはず． 練習問題4.8 (define (let->combination exp) (if (pair? (cadr exp)) (let-… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsicp-zemi.hatenablog.jp%2Fentry%2F2017%2F03%2F21%2FSICP%25E3%2582%25BC%25E3%2583%259F%25E7%25AC%25AC42%25E5%259B%259E" title="SICPゼミ第42回 - SICPゼミ" 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 2017-03-21 16:24:28 rich https://sicp-zemi.hatenablog.jp/entry/2017/03/21/SICP%E3%82%BC%E3%83%9F%E7%AC%AC42%E5%9B%9E 1.0 100%