{"author_name":"morning_reading","blog_url":"https://morning-reading.hatenadiary.org/","type":"rich","height":"190","blog_title":"\u6bce\u671d30\u5206\u8aad\u66f8\u4f1a","provider_url":"https://hatena.blog","description":"\u4eca\u65e5\u306f Monad \u30af\u30e9\u30b9\u306e\u8aac\u660e\u3092\u8aad\u307f\u307e\u3057\u305f\u3002 Monad \u3082\u305f\u3060\u306e\u578b\u30af\u30e9\u30b9(\u305f\u3060\u3057 do \u8a18\u6cd5\u306a\u3069\u7279\u5225\u6271\u3044\u3055\u308c\u3066\u308b\u3068\u3053\u308d\u3082) \u4ee5\u4e0b\u306e2\u3064\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u5b9f\u88c5\u3059\u308b return :: a -> m a (>>=) :: m a -> (a -> m b) -> m b \u3064\u3044\u3067\u306b\u7df4\u7fd2\u554f\u984c\u306e\u6700\u521d\u306e\u307b\u3046\u3092\u3084\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002 1. mult :: Nat -> Nat -> Nat mult Zero _ = Zero mult _ Zero = Zero mult (Succ n) m = add m (mult n m) 2. \u3053\u308c\u304c\u5143\u306e\u5b9f\u88c5\u3088\u308a\u3082\u52b9\u7387\u7684\u306a\u7406\u7531\u3068\u3044\u3046\u306e\u304c\u308f\u304b\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3002\u5143\u3082\u4e8c\u5206\u63a2\u7d22\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fmorning-reading.hatenadiary.org%2Fentry%2F20110506%2Fp1\" title=\"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 Haskell \u7b2c10\u7ae0 \u578b\u3068\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9 \u305d\u306e4 - \u6bce\u671d30\u5206\u8aad\u66f8\u4f1a\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":[],"published":"2011-05-06 00:00:00","title":"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0 Haskell \u7b2c10\u7ae0 \u578b\u3068\u30af\u30e9\u30b9\u306e\u5b9a\u7fa9 \u305d\u306e4","author_url":"https://blog.hatena.ne.jp/morning_reading/","width":"100%","url":"https://morning-reading.hatenadiary.org/entry/20110506/p1","version":"1.0","provider_name":"Hatena Blog","image_url":null}