{"description":"11.4 IO\u30e2\u30ca\u30c9 \u3046\u301c\u3093\u3001\u6628\u65e5\u306f\u4e00\u65e5\u4e2d\uff08\u3068\u3044\u3046\u3068\u5927\u3052\u3055\u3067\u3059\u304c\uff09\u8003\u3048\u3066\u3057\u307e\u3044\u307e\u3057\u305f\u3002 IO\u30e2\u30ca\u30c9\u3002 \u4f55\u3060\u304b\u3088\u304f\u5206\u304b\u308a\u307e\u305b\u3093\u3002 \u3053\u3053\u306eIO\u578b\u306e\u5b9a\u7fa9\u3092\u898b\u3066\u3082\u2026 instance Monad IO where (>>=) = ... return = ... fail s = ioError (userError s) \u300c...\u300d\u3063\u3066\u4f55\u3060\uff1f \u3053\u3053\u306b\u3088\u308b\u3068 \u7701\u7565\u8a18\u53f7 \"...\" \u306f\u591a\u304f\u306e\u5834\u5408\u3001\u6b8b\u308a\u306e\u5b9a\u7fa9\u90e8\u5206 \u304c Haskell \u3067\u306f\u4e0e\u3048\u3089\u308c\u306a\u3044\u3068\u3053\u308d\u3067\u4f7f\u7528\u3057\u3066\u3044\u308b\u3002 \u3068\u306e\u3053\u3068\u3002\u3053\u308c\u3060\u3051\u3067\u306f\u7406\u89e3\u51fa\u6765\u306a\u3044\u3053\u3068\u304c\u78ba\u5b9a\u3057\u307e\u3057\u305f\u3002 \u3068\u3044\u3046\u3053\u3068\u3067\u7121\u7406\u3084\u308a\u81ea\u5206\u81ea\u8eab\u3067\u7406\u89e3\u3057\u3066\u307f\u307e\u3057\u305f\u3002 \u3068\u308a\u3042\u3048\u305a\u30c4\u30b8\u30c4\u30de\u306f\u5408\u3063\u3066\u308b\u2026","published":"2010-08-11 07:23:38","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohpapa.hatenadiary.org%2Fentry%2F20100811%2F1281479018\" title=\" \u30e2\u30ca\u30c9 - Yohpapa\u2019s note\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","image_url":null,"height":"190","type":"rich","author_url":"https://blog.hatena.ne.jp/yohpapa/","provider_name":"Hatena Blog","author_name":"yohpapa","categories":["haskell"],"title":" \u30e2\u30ca\u30c9","provider_url":"https://hatena.blog","url":"https://yohpapa.hatenadiary.org/entry/20100811/1281479018","version":"1.0","blog_title":"Yohpapa\u2019s note","width":"100%","blog_url":"https://yohpapa.hatenadiary.org/"}