{"blog_title":"\u3058\u3083\u3070\u3089\u306e\u624b\u8a18","description":"Haskell\u3067\u30e2\u30ca\u30c9\u3092\u4f7f\u3063\u305f\u30b3\u30fc\u30c9\u3092\u66f8\u304f\u3068\u304d\u3001\uff12\u3064\u306e\u66f8\u304d\u65b9\u304c\u3042\u308a\u307e\u3059\u3002>>=\u3092\u4f7f\u3063\u3066\u771f\u9762\u76ee\u306b\u66f8\u304f\u65b9\u6cd5\u3068do\u8a18\u6cd5\u3067\u3059\u3002\u524d\u56de\u306eYesod\u306b\u3088\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f8b\u306b\u3068\u3063\u3066\u4e21\u8005\u3092\u6bd4\u8f03\u3057\u3066\u307f\u307e\u3059\u3002\u307e\u305a\u306f>>=\u3092\u4f7f\u3063\u305f\u66f8\u304d\u65b9\u3002 getUsers = getYesod >>= \\users -> return $ aUsers users >>= \\us -> return us \u6b21\u306bdo\u8a18\u6cd5\u3002 getUsers = do users <- getYesod us <- return $ aUsers users return us \u6bd4\u8f03\u3059\u308b\u3068do\u8a18\u6cd5\u304c\u5727\u5012\u7684\u306b\u8aad\u307f\u3084\u3059\u3044\u3068\u601d\u3044\u307e\u3059\u3002 >>=\u3092\u4f7f\u3063\u305f\u66f8\u304d\u65b9\u306e\u4f55\u2026","provider_name":"Hatena Blog","type":"rich","blog_url":"https://jabaraster.hatenadiary.org/","title":"\u30e2\u30ca\u30c9\u3092\u66f8\u304f\u3068\u304d\u306fdo\u8a18\u6cd5\u304c\u5727\u5012\u7684\u306b\u8aad\u307f\u3084\u3059\u3044","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fjabaraster.hatenadiary.org%2Fentry%2F20111213%2F1323731962\" title=\"\u30e2\u30ca\u30c9\u3092\u66f8\u304f\u3068\u304d\u306fdo\u8a18\u6cd5\u304c\u5727\u5012\u7684\u306b\u8aad\u307f\u3084\u3059\u3044 - \u3058\u3083\u3070\u3089\u306e\u624b\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","version":"1.0","author_name":"jabaraster","width":"100%","height":"190","author_url":"https://blog.hatena.ne.jp/jabaraster/","image_url":null,"published":"2011-12-13 08:19:22","categories":["Haskell"],"url":"https://jabaraster.hatenadiary.org/entry/20111213/1323731962","provider_url":"https://hatena.blog"}