{"blog_url":"https://sirocco.hatenadiary.org/","type":"rich","width":"100%","image_url":null,"categories":["Haskell"],"title":"Maybe \u578b \u3068\u3000Either \u578b","published":"2011-01-29 22:04:10","description":"\u95a2\u6570\u304c\u5024\u3092\u8fd4\u3055\u306a\u3044\u304b\u3082\u3057\u308c\u306a\u3044\u3068\u304d\u306b\u306f Maybe\u578b\u3092\u4f7f\u3044\u307e\u3059\u3002 tList =[(\"Perl\",\"Larry Wall\"),(\"Ruby\",\"Matz\"),(\"C\",\"Dennis Ritchie\"), (\"Fortran\",\" John Warner Backus\")] mLookup :: String -> [(String,String)] -> Maybe String mLookup string ((key,dat):xs) | string == key = Just dat | otherwise = mLookup string xs mLookup _ [] = Not\u2026","url":"https://sirocco.hatenadiary.org/entry/20110129/1296306250","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20110129%2F1296306250\" title=\"Maybe \u578b \u3068\u3000Either \u578b - 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>","blog_title":"sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2","author_name":"sirocco","author_url":"https://blog.hatena.ne.jp/sirocco/","version":"1.0","height":"190"}