{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnekogata.hatenablog.com%2Fentry%2F2015%2F03%2F30%2F164213\" title=\"Functor \u306b\u304a\u3051\u308b map \u306e\u5f15\u6570\u306e\u9806\u5e8f\u3092\u8003\u3048\u3066\u305f\u3089\u3044\u3063\u3053\u30b9\u30c8\u30f3\u3068\u8151\u306b\u843d\u3061\u305f\u8a71 - \u732b\u578b\u306e\u84c4\u97f3\u6a5f\u306f 1 \u5206\u9593\u306b 45 \u56de\u306b\u3083\u3042\u3068\u9cf4\u304f\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["programming","Scala","Haskell"],"provider_url":"https://hatena.blog","blog_url":"https://nekogata.hatenablog.com/","published":"2015-03-30 16:42:13","type":"rich","image_url":null,"author_url":"https://blog.hatena.ne.jp/nkgt_chkonk/","blog_title":"\u732b\u578b\u306e\u84c4\u97f3\u6a5f\u306f 1 \u5206\u9593\u306b 45 \u56de\u306b\u3083\u3042\u3068\u9cf4\u304f","url":"https://nekogata.hatenablog.com/entry/2015/03/30/164213","version":"1.0","width":"100%","provider_name":"Hatena Blog","description":"\u5225\u306b\u77e5\u898b\u306f\u66f8\u3044\u3066\u306a\u3044\u3067\u3059\u304c\u3001\u306a\u308b\u307b\u3069\u306a\u30fc\u3068\u601d\u3063\u305f\u3068\u3044\u3046\u611f\u60f3\u3092\u66f8\u3044\u305f\u30a8\u30f3\u30c8\u30ea\u3067\u3059\u3002 Scalaz\u3068Haskell\u306eFunctor\u306e\u63d0\u4f9b\u3059\u308bmap(fmap)\u306f\u3001\u5f15\u6570\u306e\u9806\u756a\u304c\u7570\u306a\u308a\u307e\u3059\u3002 Scalaz \u306e Functor def map[A, B](r: F[A])(f: A => B): F[B] F[A] \u306aFunctor\u5024\u304c\u6700\u521d\u306e\u5f15\u6570\u3067\u3001A => B \u306a\u95a2\u6570\u304c\u6b21\u306e\u5f15\u6570\u3067\u3001F[B]\u306a\u30d5\u30a1\u30f3\u30af\u30bf\u30fc\u5024\u304c\u8fd4\u308a\u5024 Haskell \u306e Functor fmap :: f => (a -> b) -> f a -> f b (a -> b) \u306a\u95a2\u6570\u304c\u6700\u521d\u306e\u5f15\u6570\u3067\u3001f a \u306a\u30d5\u30a1\u30f3\u30af\u30bf\u30fc\u5024\u304c\u6b21\u306e\u5f15\u6570\u3067\u3001f \u2026","height":"190","author_name":"nkgt_chkonk","title":"Functor \u306b\u304a\u3051\u308b map \u306e\u5f15\u6570\u306e\u9806\u5e8f\u3092\u8003\u3048\u3066\u305f\u3089\u3044\u3063\u3053\u30b9\u30c8\u30f3\u3068\u8151\u306b\u843d\u3061\u305f\u8a71"}