{"type":"rich","height":"190","description":"\u6628\u65e5\u306e\u30b3\u30fc\u30c9\u3092Generics\u306b\u5bfe\u5fdc\u3055\u305b\u3066\u307f\u307e\u3057\u305f\u3002 \u3053\u308c\u3067\u4efb\u610f\u306e\u578b\u3092\u8fd4\u305b\u307e\u3059\u3002 \u623b\u308a\u5024\u3092\u8fd4\u3057\u305f\u304f\u306a\u3044\u5834\u5408\u306fHogeSwitch\u306bVoid\u578b\u3092\u6e21\u3059\u3053\u3068\u306b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3001\u305f\u3076\u3093\u3002 public enum Hoge { FOO { public <T> T accept(HogeSwitch<T> sw) { return sw.foo(); } }, BAR { public <T> T accept(HogeSwitch<T> sw) { return sw.bar(); } }; public abstract <T> T accept(HogeSwitch<T> sw); public s\u2026","author_name":"taedium","blog_url":"https://taedium.hatenadiary.org/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ftaedium.hatenadiary.org%2Fentry%2F20070402%2Fp1\" title=\"Enum\u306b\u5bfe\u3059\u308bVisitor\u30d1\u30bf\u30fc\u30f3(Generics\u5bfe\u5fdc) - taedium\u306e\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://taedium.hatenadiary.org/entry/20070402/p1","version":"1.0","title":"Enum\u306b\u5bfe\u3059\u308bVisitor\u30d1\u30bf\u30fc\u30f3(Generics\u5bfe\u5fdc)","blog_title":"taedium\u306e\u65e5\u8a18","image_url":null,"author_url":"https://blog.hatena.ne.jp/taedium/","width":"100%","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","categories":[],"published":"2007-04-02 00:00:01"}