{"author_url":"https://blog.hatena.ne.jp/succeed/","url":"https://succeed.hatenadiary.org/entry/20051111/1131718965","blog_url":"https://succeed.hatenadiary.org/","title":"\u3055\u3089\u306bHaskell\u306e\u554f\u984c\u70b9","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsucceed.hatenadiary.org%2Fentry%2F20051111%2F1131718965\" title=\"\u3055\u3089\u306bHaskell\u306e\u554f\u984c\u70b9 - \u98f2\u307f\u7269\u3060\u304b\u3089\u592a\u3089\u306a\u3044\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","author_name":"succeed","description":"Perl\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8868\u8a18\u3067\u304d\u308b\u3053\u3068\u306f\u3001Haskell\u3067\u306f\u51fa\u6765\u306a\u3044\u3002 @keys = keys %ENV; \u3059\u306a\u308f\u3061\u3001ENV\u306e\u5de6\u8fba\u5024\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u306f\u51fa\u6765\u306a\u3044\u3002\u5de6\u8fba\u5024\u3092\u6e21\u3057\u3066\u53f3\u8fba\u5024\u3092\u53d6\u308b\u3053\u3068\u306f\u51fa\u6765\u308b\u3002 \u4f55\u3067\u51fa\u6765\u306a\u3044\u3068\u611f\u3058\u305f\u304b\u3092\u4ee5\u4e0b\u306b\u8a18\u8ff0\u3059\u308b\u3002 \u307e\u305a\u3001\u5de6\u8fba\u304b\u3089\u53f3\u8fba\u3092\u53d6\u5f97\u3059\u308b\u95a2\u6570getEnv\u306fSystem\u30e2\u30b8\u30e5\u30fc\u30eb\u3067\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308b getEnv :: String -> IO String \u3067\u3001\u5b9f\u306f\u3053\u308c\u306fSystem.hs\u3067\u306f\u306a\u304f\u3066\u3001\u305d\u306e\u3055\u3089\u306b\u4e0a\u5c64(\u4e0b\u5c64\uff1f)\u306eSystem/Environment.hs\u3092import\u3057\u3066\u3042\u308b\u306e\u304c\u30bd\u30fc\u30b9\u3092\u8aad\u3080\u3068\u308f\u304b\u308b\u3002 \u305d\u3057\u3066\u3055\u3089\u306b\u3053\u308c\u306f\u5b9a\u7fa9\u3092\u8fbf\u308b\u3053\u3068\u304c\u51fa\u6765\u2026","version":"1.0","published":"2005-11-11 23:22:45","provider_url":"https://hatena.blog","type":"rich","image_url":null,"blog_title":"\u98f2\u307f\u7269\u3060\u304b\u3089\u592a\u3089\u306a\u3044","categories":[],"provider_name":"Hatena Blog","width":"100%","height":"190"}