{"provider_url":"https://hatena.blog","image_url":null,"type":"rich","author_name":"sirocco","title":"\u30e2\u30ca\u30c9\u3063\u3066\u4f55\u3060\u308d\u3046","blog_title":"sirocco \u306e\u66f8\u3044\u3066\u3082\u3059\u3050\u306b\u5fd8\u308c\u308b\u30e1\u30e2","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsirocco.hatenadiary.org%2Fentry%2F20111012%2F1318422166\" title=\"\u30e2\u30ca\u30c9\u3063\u3066\u4f55\u3060\u308d\u3046 - 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>","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/sirocco/","categories":["Haskell"],"version":"1.0","description":"\u30e2\u30ca\u30c9\u3092\u4f7f\u3046\u3068\u4f55\u304c\u826f\u3044\u306e\u304b\u3001\u30e2\u30ca\u30c9\u3092\u4f7f\u3063\u305f\u5834\u5408\u3068\u4f7f\u308f\u306a\u3044\u5834\u5408\u3092\u6bd4\u8f03\u3057\u3066\u307f\u307e\u3059\u3002 \u95a2\u6570\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306f\u30c7\u30fc\u30bf\u306b\u4f55\u5ea6\u3082\u95a2\u6570\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u5e0c\u671b\u3059\u308b\u51fa\u529b\u3092\u5f97\u307e\u3059\u3002\u30c7\u30fc\u30bf\u3092\u5f15\u6570\u3068\u3057\u3066\u95a2\u6570\u3092\u9069\u7528\u3057\u3001\u305d\u306e\u7d50\u679c\u306b\u95a2\u6570\u3092\u9069\u7528\u3057\u30fb\u30fb\u30fb\u3068\u95a2\u6570\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u306f\u5e7e\u91cd\u306b\u3082\u30cd\u30b9\u30c8\u3057\u3066\u95a2\u6570\u3092\u9069\u7528\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002 (>>=) \u306f\u6f14\u7b97\u3092\u9023\u9396\u3055\u305b\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002\u30e2\u30ca\u30c9\u3092\u4f7f\u308f\u306a\u3044\u3067\u3001Maybe \u578b\uff08\u5931\u6557\u3059\u308b\u304b\u3082\u77e5\u308c\u306a\u3044\u6f14\u7b97\uff09\u3092\u5f15\u6570\u3068\u3059\u308b\u95a2\u6570\u3092\u66f8\u304f\u3068 Just \u3068 Nothing \u306e\u5834\u5408\u5206\u3051\u3092\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002 addWorld :: Maybe String -> Maybe String addWorld m = c\u2026","published":"2011-10-12 21:22:46","blog_url":"https://sirocco.hatenadiary.org/","url":"https://sirocco.hatenadiary.org/entry/20111012/1318422166","height":"190","width":"100%"}