tmurata https://blog.hatena.ne.jp/tmurata/ tmurataの日記 https://tmurata.hatenadiary.org/ SICP 頑健(robust)な設計のための言語レベル 成層設計(stratified design) レベルに合わせた作業a. 問題2.49の基本的 wave ペインタに(例えば笑っているような)線分を加えよ(低レベル) (define (wave frame) ((segment->painter (list (make-segment (make-vect 0 0.84) (make-vect 0.14 0.59)) (make-segment (make-vect 0.14 0.59) (make-vect 0.30 0.65)) (make-segment (make-vect 0.30 0.… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftmurata.hatenadiary.org%2Fentry%2F20090618%2F1245280896" title="SICP問題2.52 - tmurata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 2009-06-18 08:21:36 rich https://tmurata.hatenadiary.org/entry/20090618/1245280896 1.0 100%