{"blog_title":"yohhoy\u306e\u65e5\u8a18","version":"1.0","provider_url":"https://hatena.blog","categories":["C++","C++2a"],"url":"https://yohhoy.hatenadiary.jp/entry/20201123/p1","height":"190","image_url":null,"description":"C++2a(C++20)\u30b3\u30f3\u30bb\u30d7\u30c8\u306b\u304a\u3051\u308b\u539f\u5b50\u5236\u7d04(atomic constraint)\u3067\u306f\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u7f6e\u63db(parameter mapping)\u306e\u5931\u6557\u306f\u30cf\u30fc\u30c9\u30a8\u30e9\u30fc(ill-formed)\u3092\u5f15\u304d\u8d77\u3053\u3055\u305a\u3001\u305d\u306e\u5236\u7d04\u5f0f\u3092\u6e80\u305f\u3055\u306a\u3044(not satisfied)\u3068\u89e3\u91c8\u3055\u308c\u308b\u3002C++17\u73fe\u5728\u306fstd::void_t\u3084std::conjunction\u3092\u99c6\u4f7f\u3057\u305f\u96e3\u89e3\u306a\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30e1\u30bf\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\u6280\u6cd5\u304c\u8981\u6c42\u3055\u308c\u308b\u304c\u3001C++2a\u3067\u306f\u5358\u7d14\u306a\u5236\u7d04\u5f0f\u8a18\u8ff0\u306b\u3088\u308b\u30b3\u30f3\u30bb\u30d7\u30c8\u5b9a\u7fa9\u306b\u3088\u308a\u4ee3\u66ff\u3055\u308c\u308b\u3002\u306f\u305a\u3002\uff3c\uff3c\\\\\u0669( '\u03c9' )\u0648 //\uff0f\uff0f\u3042\u308b\u578bT\u304cT::value_type = int\u578b\u3092\u5b9a\u7fa9\u3059\u308b\u304b\u78ba\u8a8d\u3059\u308b\u30e1\u30bf\u95a2\u6570\uff0f\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohhoy.hatenadiary.jp%2Fentry%2F20201123%2Fp1\" title=\"\u30b3\u30f3\u30bb\u30d7\u30c8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u7f6e\u63db\u5931\u6557\u306f\u30cf\u30fc\u30c9\u30a8\u30e9\u30fc\u3067\u306f\u306a\u3044 - 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>","author_url":"https://blog.hatena.ne.jp/yohhoy/","published":"2020-11-23 00:00:00","blog_url":"https://yohhoy.hatenadiary.jp/","provider_name":"Hatena Blog","title":"\u30b3\u30f3\u30bb\u30d7\u30c8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u7f6e\u63db\u5931\u6557\u306f\u30cf\u30fc\u30c9\u30a8\u30e9\u30fc\u3067\u306f\u306a\u3044","author_name":"yohhoy","type":"rich","width":"100%"}