{"url":"https://rskmt.hateblo.jp/entry/20090623/1245733705","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Frskmt.hateblo.jp%2Fentry%2F20090623%2F1245733705\" title=\"\uff33\uff29\uff23\uff30\u6f14\u7fd2\u554f\u984c4.3 - \u3055\u304b\u3082\u3068\u306e\u30d6\u30ed\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["SICP"],"author_name":"rsakamot","width":"100%","height":"190","type":"rich","description":"\u3044\u307e\u3044\u3061\u308f\u304b\u3089\u306a\u304b\u3063\u305f\u306e\u3067\uff0c\u53c2\u7167\u3057\u305f. ;exercise4.3 (define (eval exp env) (cond [(self-evaluating? exp) exp] [(variable? exp) (lookup-variable-value exp env)] [else (if (get 'eval (operator exp)) ((get 'eval (operator exp)) exp env) (if (application? exp) (apply (eval (operator exp) env) (list-of-values (operands exp\u2026","author_url":"https://blog.hatena.ne.jp/rsakamot/","image_url":null,"blog_url":"https://rskmt.hateblo.jp/","version":"1.0","provider_name":"Hatena Blog","published":"2009-06-23 14:08:25","title":"\uff33\uff29\uff23\uff30\u6f14\u7fd2\u554f\u984c4.3","blog_title":"\u3055\u304b\u3082\u3068\u306e\u30d6\u30ed\u30b0","provider_url":"https://hatena.blog"}