{"blog_url":"https://yohhoy.hatenadiary.jp/","author_url":"https://blog.hatena.ne.jp/yohhoy/","categories":["C++","C++2a"],"type":"rich","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohhoy.hatenadiary.jp%2Fentry%2F20190528%2Fp1\" title=\"\u5b9a\u6570\u5f0f\u3092\u8981\u6c42\u3059\u308b\u30b3\u30f3\u30bb\u30d7\u30c8 - 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>","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","version":"1.0","description":"C++2a(C++20) Concept\u3092\u5229\u7528\u3057\u305f\u300c\u3042\u308b\u5f0f\u304c\u5b9a\u6570\u5f0f\u3067\u3042\u308b\u3053\u3068\u300d\u3092\u8981\u6c42\u3059\u308b\u5236\u7d04\u5f0f\u306e\u5b9a\u7fa9\u3002\u578b\u30d1\u30e9\u30e1\u30fc\u30bfT\u306b\u5bfe\u3057\u3066\u300cT::size()\u304c\u30b3\u30f3\u30d1\u30a4\u30eb\u6642\u306b\u8a55\u4fa1\u3055\u308c\u308b\u3053\u3068\u300d\u3092\u8981\u6c42\u3059\u308b\u30b3\u30f3\u30bb\u30d7\u30c8HasConstantSize\u306e\u5b9a\u7fa9\u4f8b\u3002requires\u5f0f(requires-expression)\u4e2d\u306e typename type-name; \u69cb\u6587(type-requirement)\u306f\u3001type-name \u304c\u6709\u52b9\u306a\u578b\u3067\u3042\u308b\u3053\u3068\u3092\u8868\u660e\u3059\u308b\u3002\u4f8b\u793a\u30b3\u30fc\u30c9\u306e\u3088\u3046\u306b\u3001\u30af\u30e9\u30b9\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u7279\u6b8a\u5316\u306b\u5bfe\u3057\u3066\u306f\u5b8c\u5168\u578b\u304c\u8981\u6c42\u3055\u308c\u306a\u3044\u3002*1 // C++2a template<auto> struct require_c\u2026","height":"190","published":"2019-05-28 00:00:00","image_url":null,"blog_title":"yohhoy\u306e\u65e5\u8a18","title":"\u5b9a\u6570\u5f0f\u3092\u8981\u6c42\u3059\u308b\u30b3\u30f3\u30bb\u30d7\u30c8","url":"https://yohhoy.hatenadiary.jp/entry/20190528/p1","author_name":"yohhoy"}