{"categories":["C","C2x"],"blog_url":"https://yohhoy.hatenadiary.jp/","provider_url":"https://hatena.blog","author_url":"https://blog.hatena.ne.jp/yohhoy/","url":"https://yohhoy.hatenadiary.jp/entry/20200505/p1","version":"1.0","author_name":"yohhoy","published":"2020-05-05 00:00:00","title":"C2x\u6a19\u6e96\u306e\u5c5e\u6027(attribute)","height":"190","width":"100%","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohhoy.hatenadiary.jp%2Fentry%2F20200505%2Fp1\" title=\"C2x\u6a19\u6e96\u306e\u5c5e\u6027(attribute) - yohhoy\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>","type":"rich","description":"\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u8a00\u8a9eC\u306e\u6b21\u671f\u4ed5\u69d8C2x(C23)\u3067\u306f \u5c5e\u6027(attribute) \u69cb\u6587\u304c\u6a19\u6e96\u5316\u3055\u308c\u308b\u3002\u5c5e\u6027\u69cb\u6587\u3092\u5148\u884c\u5c0e\u5165\u3057\u305fC++\u8a00\u8a9e\u3068\u307b\u307c\u7b49\u4fa1\u3067\u3042\u308a\u3001\u9023\u7d9a\u3059\u308b\u30d6\u30e9\u30b1\u30c3\u30c8[[\uff0f]]\u3092\u7528\u3044\u308b\u3002*1 // C2x [[nodiscard]] int f(); void g([[maybe_unsed]] int a) { [[maybe_unused] int x; /* ... */ } struct [[deprecated(\"old ver.\")]] S { /*...*/ }; int n = f(); switch (n) { case 0: case 1: f(); [[fallthro\u2026","provider_name":"Hatena Blog","blog_title":"yohhoy\u306e\u65e5\u8a18"}