{"height":"190","title":"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0Haskell\u3092\u8aad\u3080(7)","author_name":"s-shin","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fshin.hateblo.jp%2Fentry%2F2012%2F07%2F15%2F220729\" title=\"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0Haskell\u3092\u8aad\u3080(7) - $ cat /var/log/shin\" 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","width":"100%","categories":["Programming","Haskell"],"published":"2012-07-15 22:07:29","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/s-shin/","description":"\u7b2c7\u7ae0 \u9ad8\u968e\u95a2\u6570 \u57fa\u672c \u9ad8\u968e\u95a2\u6570\u3068\u306f \u5f15\u6570\u3068\u3057\u3066\u95a2\u6570\u3092\u3068\u3063\u305f\u308a\u3001\u95a2\u6570\u3092\u8fd4\u3057\u305f\u308a\u3059\u308b\u95a2\u6570\u3002\u305f\u3060\u3057\u3001Haskell\u3067\u306f\u30ab\u30ea\u30fc\u5316\u306e\u305f\u3081\u95a2\u6570\u3092\u8fd4\u3059\u306e\u304c\u5e38\u306a\u306e\u3067\u3001\u660e\u793a\u7684\u306b\u9ad8\u968e\u95a2\u6570\u3068\u547c\u3076\u5834\u5408\u306f\u3001\u5f15\u6570\u3068\u3057\u3066\u95a2\u6570\u3092\u53d6\u308b\u95a2\u6570\u3067\u3042\u308b\u4e8b\u304c\u591a\u3044\u3002 twice :: (a -> a) -> a -> a twice f x = f (f x) \u30ea\u30b9\u30c8\u51e6\u7406 \u30ea\u30b9\u30c8\u7cfb\u306e\u9ad8\u968e\u95a2\u6570\u8272\u3005\u3002 map' :: (a -> b) -> [a] -> [b] map' f xs = [f x | x <- xs] filter' :: (a -> Bool) -> [a] -> [a] filter' f xs = [x | x <- \u2026","blog_title":"$ cat /var/log/shin","url":"https://shin.hateblo.jp/entry/2012/07/15/220729","blog_url":"https://shin.hateblo.jp/","type":"rich","image_url":null}