{"categories":["\u6280\u8853","scala","cats"],"published":"2022-11-27 01:24:02","height":"190","version":"1.0","width":"100%","blog_url":"https://blog.3qe.us/","author_url":"https://blog.hatena.ne.jp/Windymelt/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.3qe.us%2Fentry%2F2022%2F11%2F27%2F012402\" title=\"Scala\u306eCats\u306b\u304a\u3051\u308bTuple\u4e0a\u3067\u306emap\u3084product\u306e\u632f\u821e\u3044\u304c\u9762\u767d\u3044\u306e\u3067\u7d39\u4ecb\u3059\u308b - Lambda\u30ab\u30af\u30c6\u30eb\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"Lambda\u30ab\u30af\u30c6\u30eb","description":"Scala\u3067\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u3092\u3057\u3066\u3044\u308b\u3068Tuple2\u306b\u304a\u4e16\u8a71\u306b\u306a\u308b\u3053\u3068\u304c\u591a\u3044\u3002\u4f8b\u3048\u3070Seq[(K, V)]\u304b\u3089Map[K, V]\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3057\u3001\u4f55\u304b\u3068\u5fdc\u7528\u7bc4\u56f2\u304c\u5e83\u3044\u3002cats\u3067\u3082\u3001Tuple2\u3092\u3046\u307e\u304f\u64cd\u4f5c\u3059\u308b\u305f\u3081\u306e\u6570\u3005\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u7528\u610f\u3055\u308c\u3066\u3044\u308b\u3002 \u305d\u3093\u306a\u4e2d\u3001Tuple2\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u773a\u3081\u3066\u3044\u308b\u3068\u9762\u767d\u3044\u8a18\u8ff0\u304c\u3042\u3063\u305f\u3002\u306a\u3093\u3068Tuple2\u3067\u3082map\u3067\u304d\u308b\u306e\u3060\u3002 github.com override def map[A, B](fa: (X, A))(f: A => B): (X, B) = (fa._1, f(fa._2)) /* \u7565 */ override def productR[A\u2026","author_name":"Windymelt","type":"rich","provider_url":"https://hatena.blog","image_url":null,"provider_name":"Hatena Blog","url":"https://blog.3qe.us/entry/2022/11/27/012402","title":"Scala\u306eCats\u306b\u304a\u3051\u308bTuple\u4e0a\u3067\u306emap\u3084product\u306e\u632f\u821e\u3044\u304c\u9762\u767d\u3044\u306e\u3067\u7d39\u4ecb\u3059\u308b"}