{"image_url":null,"author_url":"https://blog.hatena.ne.jp/Windymelt/","blog_title":"Lambda\u30ab\u30af\u30c6\u30eb","title":"\uff08\u8ffd\u8a18\u3042\u308a\uff09Scala\u306eMap\u3092map\u3057\u3066key\u304c\u885d\u7a81\u3059\u308b\u306e\u3092\u56de\u907f\u3059\u308b\u65b9\u6cd5","height":"190","width":"100%","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.3qe.us%2Fentry%2F2022%2F06%2F13%2F212404\" title=\"\uff08\u8ffd\u8a18\u3042\u308a\uff09Scala\u306eMap\u3092map\u3057\u3066key\u304c\u885d\u7a81\u3059\u308b\u306e\u3092\u56de\u907f\u3059\u308b\u65b9\u6cd5 - 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_url":"https://blog.3qe.us/","version":"1.0","provider_name":"Hatena Blog","author_name":"Windymelt","published":"2022-06-13 21:24:04","categories":["\u6280\u8853","scala","cats"],"description":"Scala\u306b\u306fMap\u3068\u3044\u3046\u30c7\u30fc\u30bf\u69cb\u9020\u304c\u3042\u308a\u3001\u8f9e\u66f8\u3092\u8868\u73fe\u3057\u3066\u3044\u308b\u3002 val m = Map(\"windy\" -> \"melt\", \"fizz\" -> \"buzz\") m(\"windy\") // => \"melt\" \u305d\u3057\u3066\u3001Map\u306b\u306fmap\u30e1\u30bd\u30c3\u30c9\u304c\u751f\u3048\u3066\u3044\u3066\u3001Key\u3068Value\u3068\u306e\u53cc\u65b9\u3092\u4e00\u6c17\u306b\u5909\u63db\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b: val m = Map(0 -> \"foo\", 1 ->\"bar\", 2 -> \"buzz\") val f = (n: Int) => n % 2 m map { case (k, v) => f(k) -> v } \u3057\u304b\u3057\u306a\u304c\u3089\u3001Key\u3092\u5909\u63db\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u3067\u306fKey\u304c\u540c\u3058\u5024\u306b\u6295\u5f71\u3055\u308c\u2026","url":"https://blog.3qe.us/entry/2022/06/13/212404","type":"rich"}