{"provider_url":"https://hatena.blog","categories":["Haskell"],"blog_title":"by shigemk2","type":"rich","width":"100%","height":"190","author_url":"https://blog.hatena.ne.jp/shigemk2/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2Fid_haskell\" title=\"id\u3068\u306f - by shigemk2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://www.shigemk2.com/","description":"Haskell \u306e id \u306e\u4f7f\u3044\u65b9 - Block Rockin\u2019 Codesjxck.hatenablog.com Prelude> [1,2,3] [1,2,3] Prelude> id [1,2,3] [1,2,3] Prelude> id 3 3 Prelude> :t id id :: a -> a \u4f55\u304b\u306e\u578b\u306e\u5024\u3092\u53d7\u3051\u53d6\u308a\u3001\u305d\u306e\u5024\u3092\u305d\u306e\u307e\u307e\u8fd4\u3059 \u3068\u3044\u3046\u95a2\u6570\u3002\u305d\u306e\u307e\u307e\u3002 \u3053\u308c\u3060\u3051\u3060\u3068\u306a\u3093\u3060\u304b\u3088\u304f\u308f\u304b\u3089\u306a\u3044\u3051\u3069\u3001\u30d5\u30a1\u30f3\u30af\u30bf\u30fc\u5247\u3067\u306a\u3093\u304b\u51fa\u3066\u304f\u308b fmap id \u3092\u9069\u7528\u3057\u305f\u7d50\u679c\u306f id \u3092\u9069\u7528\u3057\u305f\u7d50\u679c\u3068\u7b49\u3057\u3044 \u304a\u6c17\u697d Haskell \u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u5165\u9580www.geocities.jp","image_url":null,"author_name":"shigemk2","provider_name":"Hatena Blog","title":"id\u3068\u306f","url":"https://www.shigemk2.com/entry/id_haskell","version":"1.0","published":"2015-08-27 16:26:44"}