{"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohhoy.hatenadiary.jp%2Fentry%2F20231019%2Fp1\" title=\"\u30bf\u30b0\u578b\u306e\u5b9f\u88c5\u30a4\u30c7\u30a3\u30aa\u30e0 - 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>","title":"\u30bf\u30b0\u578b\u306e\u5b9f\u88c5\u30a4\u30c7\u30a3\u30aa\u30e0","blog_title":"yohhoy\u306e\u65e5\u8a18","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","description":"C++\u6a19\u6e96\u30e9\u30a4\u30d6\u30e9\u30ea\u3067\u4f7f\u308f\u308c\u308b\u30bf\u30b0\u578b(tag type)\u3068\u30bf\u30b0\u5024\u306e\u5b9f\u88c5\u30a4\u30c7\u30a3\u30aa\u30e0\u3002\u30c7\u30d5\u30a9\u30eb\u30c8\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3078\u306eexplicit\u6307\u5b9a\u306f\u3001{}\u306b\u3088\u308b\u30bf\u30b0\u578b(mytag_t)\u30c7\u30d5\u30a9\u30eb\u30c8\u69cb\u7bc9\u3092\u7981\u6b62\u3059\u308b\u305f\u3081\u3002 struct mytag_t { explicit mytag_t() = default; }; inline constexpr mytag_t mytag{}; // C++17\u4ee5\u964d struct S {}; void f(S); // #1 void f(mytag_t); // #2 f({}); // #1\u3092\u547c\u3073\u51fa\u3059 \u95a2\u9023URL c++ - Explicit default const\u2026","version":"1.0","author_name":"yohhoy","published":"2023-10-19 00:00:00","author_url":"https://blog.hatena.ne.jp/yohhoy/","type":"rich","url":"https://yohhoy.hatenadiary.jp/entry/20231019/p1","height":"190","image_url":null,"width":"100%","categories":["C++"],"blog_url":"https://yohhoy.hatenadiary.jp/"}