{"categories":["C++"],"description":"\u3075\u3068\u300e\u30e9\u30e0\u30c0\u95a2\u6570\u3092 friend \u306b\u3059\u308b\u306b\u306f\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u306e\u304b\u300f\u3068\u601d\u3063\u3066\u66f8\u3044\u3066\u307f\u307e\u3057\u305f\u3002 \u3068\u308a\u3042\u3048\u305a Clang 3.5 \u3060\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u30e9\u30e0\u30c0\u95a2\u6570\u306e\u578b\u3092 friend \u306b\u3059\u308c\u3070\u52d5\u4f5c\u3057\u305f\u3002 [\u30bd\u30fc\u30b9] #include <iostream> auto func = [](auto x){ return x.value; }; class X{ friend decltype(func); int value = 42; }; int main(){ X x; std::cout << func(x) << std::endl; return 0; } [\u51fa\u529b] 42 \u3053\u308c\u304c\u8a00\u8a9e\u4ed5\u69d8\u7684\u306b\u554f\u984c\u306a\u3044\u2026","author_name":"osyo-manga","version":"1.0","published":"2014-03-25 18:26:49","blog_url":"https://osyo-manga.hatenadiary.org/","image_url":null,"title":"C++14 \u3067\u30e9\u30e0\u30c0\u95a2\u6570\u3092 friend \u306b\u3059\u308b","width":"100%","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fosyo-manga.hatenadiary.org%2Fentry%2F20140325%2F1395739609\" title=\"C++14 \u3067\u30e9\u30e0\u30c0\u95a2\u6570\u3092 friend \u306b\u3059\u308b - C++\u3067\u30b2\u30fc\u30e0\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","height":"190","url":"https://osyo-manga.hatenadiary.org/entry/20140325/1395739609","type":"rich","provider_name":"Hatena Blog","blog_title":"C++\u3067\u30b2\u30fc\u30e0\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0","author_url":"https://blog.hatena.ne.jp/osyo-manga/"}