{"blog_url":"https://argius.hatenablog.jp/","published":"2008-02-13 23:51:01","blog_title":"argius note","provider_name":"Hatena Blog","categories":["Haskell"],"width":"100%","author_name":"argius","description":"\u3042\u305f\u308a\u307e\u3048\u3067\u3059\u304c\u3001\u601d\u3063\u305f\u3068\u304a\u308a\u306e\u7d50\u679c\u304c\u51fa\u529b\u3055\u308c\u307e\u3059\u3002 main = p 2 `and_then` p 3 >> twice (p 6) p :: (Show a) => a -> IO () p n = print n and_then :: IO () -> IO () -> IO () and_then a b = a >> b twice :: IO () -> IO () twice a = a >> a","author_url":"https://blog.hatena.ne.jp/argius/","version":"1.0","title":"IO\u3092\u3064\u306a\u3052\u308b\u7df4\u7fd2","image_url":null,"height":"190","url":"https://argius.hatenablog.jp/entry/20080213/1202914261","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fargius.hatenablog.jp%2Fentry%2F20080213%2F1202914261\" title=\"IO\u3092\u3064\u306a\u3052\u308b\u7df4\u7fd2 - argius note\" 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"}