{"blog_title":"\u30dc\u30af\u30ce\u30b9","url":"https://boxnos.hatenablog.com/entry/20071021/1192954609","provider_name":"Hatena Blog","width":"100%","title":" SICP\u3092\u8aad\u3080(54) 2.2.3(1) \u516c\u8a8d\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3068\u3057\u3066\u306e\u4e26\u3073","version":"1.0","author_url":"https://blog.hatena.ne.jp/tanakaBox/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fboxnos.hatenablog.com%2Fentry%2F20071021%2F1192954609\" title=\" SICP\u3092\u8aad\u3080(54) 2.2.3(1) \u516c\u8a8d\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u3068\u3057\u3066\u306e\u4e26\u3073 - \u30dc\u30af\u30ce\u30b9\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["Scheme"],"provider_url":"https://hatena.blog","blog_url":"https://boxnos.hatenablog.com/","published":"2007-10-21 17:16:49","type":"rich","author_name":"tanakaBox","image_url":null,"description":"\u3080\u3080\u3045\u3002 \u5f15\u6570\u3068\u3057\u3066\u30ea\u30b9\u30c8\u3092\u53d6\u308a\u3001\u5947\u6570\u3067\u3042\u308b\u8449\u306e\u4e8c\u4e57\u306e\u548c\u3092\u8a08\u7b97\u3059\u308b \u5f15\u6570\u3068\u3057\u3066\u6570\u5024\u3092\u53d6\u308a\u3001\u5076\u6570\u306e\u30d5\u30a3\u30dc\u30ca\u30c3\u30c1\u6570\u5217\u306e\u30ea\u30b9\u30c8\u3092\u4f5c\u308b \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u898b\u3066\u307f\u3088\u3046\u3002 (define (sum-odd-squares tree) (cond ((null? tree) 0) ((not (pair? tree)) (if (odd? tree) (square tree) 0)) (else (+ (sum-odd-squares (car tree)) (sum-odd-squares (cdr tree)))))) (sum-odd-squares '(1 (2 3) (4 5))) ; 35 (def\u2026","height":"190"}