{"version":"1.0","image_url":null,"provider_url":"https://hatena.blog","description":"Haskell \u306f\u9045\u5ef6\u8a55\u4fa1\u306e\u305f\u3081\u306b\u5f0f\u3092\u5c55\u958b\u3057\u3066\u8a08\u7b97\u3057\u306a\u3044\u307e\u307e\u30b5\u30f3\u30af\u3068\u3057\u3066\u30b9\u30bf\u30c3\u30af\u306b\u4fdd\u6301\u3057\u3066\u3044\u307e\u3059\u3002 \u4e0b\u306efoldl (+) 0 (1:2:3:[])\u3092\u6b63\u683c\u8a55\u4fa1\u3059\u308c\u3070(0 + 1)\u306e\u7d50\u679c\u3067\u3042\u308b1\u3092\u4fdd\u6301\u3059\u308b\u306e\u3067\u3059\u304c\u305d\u3046\u306f\u3057\u307e\u305b\u3093\u3002 foldl (+) 0 (1:2:3:[]) == foldl (+) (0 + 1) (2:3:[]) == foldl (+) ((0 + 1) + 2) (3:[]) == foldl (+) (((0 + 1) + 2) + 3) [] == (((0 + 1) + 2) + 3) \u305d\u3046\u3059\u308b\u3068\u5927\u304d\u306a\u30ea\u30b9\u30c8\u3092\u51e6\u7406\u3059\u308b\u3068\u304d\u306f\u30b9\u30bf\u30c3\u30af\u306e\u6d88\u8cbb\u304c\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002 1\u304b\u30891\u2026","blog_title":"sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2","url":"https://sirocco.hatenadiary.org/entry/20100610/1276119396","title":"\u300cReal World Haskell\u300d\u8aad\u66f8\u30e1\u30e2\u30004.\u95a2\u6570\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 4.12 \u30b9\u30da\u30fc\u30b9\u30ea\u30fc\u30af\u3068\u6b63\u683c\u8a55\u4fa1","published":"2010-06-10 06:36:36","height":"190","provider_name":"Hatena Blog","author_name":"sirocco","blog_url":"https://sirocco.hatenadiary.org/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20100610%2F1276119396\" title=\"\u300cReal World Haskell\u300d\u8aad\u66f8\u30e1\u30e2\u30004.\u95a2\u6570\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 4.12 \u30b9\u30da\u30fc\u30b9\u30ea\u30fc\u30af\u3068\u6b63\u683c\u8a55\u4fa1 - sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","categories":["Haskell"],"width":"100%","author_url":"https://blog.hatena.ne.jp/sirocco/"}