{"version":"1.0","blog_url":"https://yohhoy.hatenadiary.jp/","published":"2023-09-08 00:00:00","type":"rich","url":"https://yohhoy.hatenadiary.jp/entry/20230908/p1","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohhoy.hatenadiary.jp%2Fentry%2F20230908%2Fp1\" title=\"\u5f0f\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u8a55\u4fa1\u5224\u5b9a - 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>","blog_title":"yohhoy\u306e\u65e5\u8a18","width":"100%","categories":["C++"],"author_url":"https://blog.hatena.ne.jp/yohhoy/","image_url":null,"title":"\u5f0f\u306e\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u8a55\u4fa1\u5224\u5b9a","provider_name":"Hatena Blog","description":"C++20\u8a00\u8a9e\u6a5f\u80fd\u3092\u5229\u7528\u3057\u305f\u3001\u3042\u308b\u5f0f\u304c\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u8a55\u4fa1\u53ef\u80fd\u304b\u3092\u5224\u5b9a\u3059\u308b\u30e1\u30bf\u95a2\u6570\u7684\u306a\u3082\u306e\u3002id:yohhoy:20190528 \u306e\u5225\u89e3\u3002\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u306fStackOverflow\u3067\u898b\u3064\u3051\u305f\u8cea\u554f\u3068\u56de\u7b54\u306b\u57fa\u3065\u304f\u3002 // C++20\u4ee5\u964d template<class Lambda, int = (Lambda{}(), 0)> constexpr bool is_constexpr(Lambda) { return true; } constexpr bool is_constexpr(...) { return false; } template<int N> void do_stuff(); vo\u2026","provider_url":"https://hatena.blog","author_name":"yohhoy","height":"190"}