{"type":"rich","blog_url":"https://takafumi-s.hatenablog.com/","description":"\u74b0\u5883 ghc 7.8.3 CentOS7.0 \u300c\u3059\u3054\u3044Haskell\u305f\u306e\u3057\u304f\u5b66\u307c\u3046\uff01\u300d\u7b2c07\u7ae0 \u30e1\u30e2 \u3053\u306e\u8fba\u3067\u3001\u8a00\u8449\u306e\u5b9a\u7fa9\u304c\u3088\u304f\u308f\u304b\u3089\u306a\u304f\u306a\u3063\u3066\u3044\u305f\u306e\u3067\u3001\u307e\u3068\u3081\u3066\u307f\u305f\u3002 \u8a00\u8449 \u8aac\u660e \u4f8b \u578b\u5909\u6570 \u95a2\u6570\u306e\u660e\u793a\u7684\u306a\u578b\u5ba3\u8a00\u306b\u4f7f\u308f\u308c\u308b\u3069\u3093\u306a\u578b\u3082\u53d6\u308a\u5f97\u308b\u4e8b\u3092\u610f\u5473\u3059\u308b head :: [a] -> a \u3053\u306e\u300ca\u300d\u306e\u4e8b\u3092\u578b\u5909\u6570\u3068\u3088\u3076 \u578b\u30af\u30e9\u30b9 \u4f55\u3089\u304b\u306e\u632f\u308b\u821e\u3044\u3092\u5b9a\u7fa9\u3059\u308b\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9 class Eq a where \u3053\u306e\u300cEq\u300d\u3092\u578b\u30af\u30e9\u30b9\u3068\u547c\u3076 \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9 \u578b\u30af\u30e9\u30b9\u304c\u8a18\u8ff0\u3059\u308b\u632f\u308b\u821e\u3044\u3092\u5b9f\u88c5\u3057\u305f\u3082\u306e instance Eq a where \u578ba\u3092Eq\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3068\u3057\u3066\u5b9f\u88c5\u3059\u308b \u578b\u30af\u30e9\u30b9\u5236\u7d04 \u95a2\u6570\u5b9a\u7fa9\u306e\u969b\u2026","blog_title":"takafumi blog","categories":["Haskell"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftakafumi-s.hatenablog.com%2Fentry%2F2015%2F09%2F25%2F123335\" title=\"\u3010Haskell\u3011 \u8a00\u8449\u306e\u5b9a\u7fa9\u307e\u3068\u3081\uff08\u578b\u30af\u30e9\u30b9\u3001\u578b\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3001\u5024\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3001\u578b\u5f15\u6570\u306a\u3069\uff09 - takafumi blog\" 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,"version":"1.0","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","published":"2015-09-25 12:33:35","width":"100%","title":"\u3010Haskell\u3011 \u8a00\u8449\u306e\u5b9a\u7fa9\u307e\u3068\u3081\uff08\u578b\u30af\u30e9\u30b9\u3001\u578b\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3001\u5024\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3001\u578b\u5f15\u6570\u306a\u3069\uff09","height":"190","author_url":"https://blog.hatena.ne.jp/takafumi-s/","author_name":"takafumi-s","url":"https://takafumi-s.hatenablog.com/entry/2015/09/25/123335"}