{"author_url":"https://blog.hatena.ne.jp/masa_edw/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmasa-edw.hatenadiary.org%2Fentry%2F20080312%2F1205283739\" title=\"letrec \u3068 let* - masa.edw the \u30cf\u30d0\u30cd\u30ed\u30d6\u30ea\u30fc\u30c0\u30fc\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","provider_url":"https://hatena.blog","blog_url":"https://masa-edw.hatenadiary.org/","published":"2008-03-12 10:02:19","provider_name":"Hatena Blog","version":"1.0","author_name":"masa_edw","categories":["Scheme"],"image_url":null,"title":"letrec \u3068 let*","blog_title":"masa.edw the \u30cf\u30d0\u30cd\u30ed\u30d6\u30ea\u30fc\u30c0\u30fc","type":"rich","height":"190","url":"https://masa-edw.hatenadiary.org/entry/20080312/1205283739","width":"100%","description":"\u4e00\u30f6\u6708\u4ee5\u4e0a\u524d\u306e\u8a71\u306b\u4eca\u66f4\u53cd\u5fdc\u3059\u308b\u30a8\u30f3\u30c8\u30ea \u2192 http://mywiki.jp/itkz/SICP+%93\u01cf%91%8D%C0%92k%89%EF/2008-02-08/R5RS\u3067\u306f\u5185\u90e8 define \u306e\u8a55\u4fa1\u9806\u306f\u4e0d\u5b9a\u3067\u3059(letrec \u3068\u7b49\u4fa1\u3068\u3055\u308c\u3066\u3044\u307e\u3059)\u3002\u3067\u3001unko\u306e\u5834\u5408\u306f let* \u3092\u4f7f\u3046\u3068\u3046\u307e\u304f\u3044\u304d\u307e\u3059\u3002let* \u306f\u4e0a\u304b\u3089\u9806\u306b\u8a55\u4fa1\u3057\u3066\u675f\u7e1b\u3057\u3066\u3044\u304d\u307e\u3059\u3002letrec \u306f\u5c40\u6240\u7684\u306b\u4f7f\u3046\u518d\u5e30\u95a2\u6570\u3092\u4f5c\u308b\u305f\u3081\u306e\u3082\u306e\u306a\u306e\u3067\u3001\u5185\u90e8 define \u3082\u540c\u69d8\u306b\u95a2\u6570\u5b9a\u7fa9\u306b\u4f7f\u3046\u3082\u306e\u3068\u8003\u3048\u308b\u306e\u304c\u826f\u3044\u3063\u307d\u3044\u3002letrec \u3068 let* (\u3068 let) \u306e\u9055\u3044\u3092 unko\u306e\u6319\u52d5\u3067\u898b\u3066\u307f\u308b\u3068\u3053\u3093\u306a\u611f\u3058\u3067\u3059\u3002 ;; \u5185\u90e8\u2026"}