{"provider_url":"https://hatena.blog","url":"https://www.shigemk2.com/entry/chotto_scala_20151103","published":"2015-11-03 15:40:02","blog_title":"by shigemk2","image_url":null,"height":"190","version":"1.0","title":"Scala\u306e\u3061\u3087\u3063\u3068\u3057\u305f\u3084\u308a\u53d6\u308a Map\u3084List\u306b\u8ffd\u52a0\u3068\u304b\u5dee\u5206\u3068\u304b","provider_name":"Hatena Blog","author_name":"shigemk2","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2Fchotto_scala_20151103\" title=\"Scala\u306e\u3061\u3087\u3063\u3068\u3057\u305f\u3084\u308a\u53d6\u308a Map\u3084List\u306b\u8ffd\u52a0\u3068\u304b\u5dee\u5206\u3068\u304b - 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>","categories":["Scala"],"blog_url":"https://www.shigemk2.com/","description":"List\u306bList\u3067\u30de\u30a4\u30ca\u30b9\u306f\u3067\u304d\u306a\u3044\u3063\u307d\u3044\u3002 \u9006\u306bMap\u306b\u30d7\u30e9\u30b9\u306f\u51fa\u6765\u308b\u3002 \u8907\u6570\u306eList\u306e\u5dee\u5206\u3092\u3068\u308a\u305f\u3044\u3068\u304d\u306fdiff\u3092\u4f7f\u3046\u3002 scala> List(1,2,3) - List(2,3) <console>:11: error: value - is not a member of List[Int] List(1,2,3) - List(2,3) ^ scala> val a = Map(\"hoge\" -> 1) a: scala.collection.immutable.Map[String,Int] = Map(hoge -> 1) scala> a + (\"fuga\" -> 2)\u2026","type":"rich","width":"100%","author_url":"https://blog.hatena.ne.jp/shigemk2/"}