{"height":"190","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","description":"letrec \u306e\u30a8\u30e9\u30fc\u691c\u51fa\u3092 Scheme \u5074\u306e current-exception-handler \u3067 catch \u3057\u305f\u3044\u3068\u3044\u3046\u8981\u6c42\u304b\u3089\u30a8\u30e9\u30fc\u3092\u4e0a\u3052\u308b\u30a4\u30f3\u30b9\u30c8\u30e9\u30af\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3057\u305f\u3002 \u3053\u306e\u65b9\u6cd5\u304c\u5b9a\u77f3\u304b\u3069\u3046\u304b\u306f\u5206\u304b\u3089\u306a\u3044\u304c\u3053\u308c\u3057\u304b\u601d\u3044\u3064\u304b\u306a\u304b\u3063\u305f\u3002 (guard (c [#t #f]) (letrec ([a 3] [b a]) (display b) (newline)) )","published":"2008-11-25 12:35:02","blog_url":"https://higepon.hatenablog.com/","author_name":"higepon","version":"1.0","type":"rich","image_url":null,"width":"100%","blog_title":"higepon blog","url":"https://higepon.hatenablog.com/entry/20081125/1227584102","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fhigepon.hatenablog.com%2Fentry%2F20081125%2F1227584102\" title=\" \u30a8\u30e9\u30fc\u3092\u4e0a\u3052\u308b\u30a4\u30f3\u30b9\u30c8\u30e9\u30af\u30b7\u30e7\u30f3 - higepon blog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_url":"https://blog.hatena.ne.jp/higepon/","categories":["mosh","scheme"],"title":" \u30a8\u30e9\u30fc\u3092\u4e0a\u3052\u308b\u30a4\u30f3\u30b9\u30c8\u30e9\u30af\u30b7\u30e7\u30f3"}