{"provider_url":"https://hatena.blog","blog_title":"\u897f\u5c3e\u6cf0\u548c\u306e\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc","height":"190","image_url":null,"published":"2009-04-12 22:38:37","author_url":"https://blog.hatena.ne.jp/nishiohirokazu/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnishiohirokazu.hatenadiary.org%2Fentry%2F20090412%2F1239543517\" title=\"\u95a2\u6570\u306e\u5b9a\u7fa9\u306b\u30d1\u30e9\u30e1\u30fc\u30bf(\u4eee\u5f15\u6570)\u306f\u5fc5\u8981\u306a\u306e\u304b - \u897f\u5c3e\u6cf0\u548c\u306e\u306f\u3066\u306a\u30c0\u30a4\u30a2\u30ea\u30fc\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://nishiohirokazu.hatenadiary.org/","width":"100%","provider_name":"Hatena Blog","categories":[],"author_name":"nishiohirokazu","version":"1.0","title":"\u95a2\u6570\u306e\u5b9a\u7fa9\u306b\u30d1\u30e9\u30e1\u30fc\u30bf(\u4eee\u5f15\u6570)\u306f\u5fc5\u8981\u306a\u306e\u304b","url":"https://nishiohirokazu.hatenadiary.org/entry/20090412/1239543517","description":"\u300c\u306a\u3093\u3067\u95a2\u6570\u306e\u5b9a\u7fa9\u306b\u306f\u5f15\u6570\u306e\u30ea\u30b9\u30c8\u304c\u5fc5\u8981\u306a\u306e\uff1f\u5fc5\u8981\u306a\u3044\u3058\u3083\u306a\u3044\uff1f\u300d\u3068\u805e\u304b\u308c\u3066\u3001\u306a\u305c\u5fc5\u8981\u306a\u306e\u304b\u3092\u8aac\u660e\u3057\u3088\u3046\u3068\u3057\u305f\u304c\u3001\u3075\u3068Haskell\u3060\u3063\u305f\u3089\u3044\u3089\u306a\u3044\u3093\u3058\u3083\u306a\u3044\u304b\u3068\u601d\u3063\u305f\u306e\u3067\u78ba\u8a8d\u3057\u3066\u307f\u305f\u3002\u30d5\u30a3\u30dc\u30ca\u30c3\u30c1\u6570\u5217\u3092\u8a08\u7b97\u3059\u308b\u95a2\u6570\u3092\u5f15\u6570\u306a\u3057\u3067\u5b9f\u88c5\u3059\u308b\u3002 cond x y z = if x then y else z dup f x = f x x fib_ = dup(flip(flip.(.)(.).(flip (.).).((.subtract 1).).((dup.).(dup.((flip fib_.).(+))))).flip(cond.(0 ==))) fib = (dup (fib_ 0 1)\u2026","type":"rich"}