{"provider_name":"Hatena Blog","categories":["C++"],"height":"190","published":"2015-09-12 00:00:00","image_url":null,"type":"rich","description":"\u7279\u306b\u9762\u767d\u307f\u3082\u306a\u3044\u3093\u3060\u3051\u3069\u30e1\u30f3\u30d0\u5909\u6570\u306e\u30dd\u30a4\u30f3\u30bf\u304c\u308f\u304b\u3063\u3066\u3044\u308c\u3070\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u306f\u53ef\u80fd\u3088\u306d\u3001\u3068\u3002 [\u30b3\u30fc\u30c9] #include <iostream> struct X{ auto get_value_ptr(){ return &X::value; } private: int value = 42; }; int main(){ X x; // error // x.value; auto value_ptr = x.get_value_ptr(); // \u30e1\u30f3\u30d0\u5909\u6570\u306e\u30dd\u30a4\u30f3\u30bf\u3092\u4ecb\u3057\u3066\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u306f\u53ef\u80fd std::cout << x.*value_ptr << std::endl; retu\u2026","author_name":"osyo-manga","author_url":"https://blog.hatena.ne.jp/osyo-manga/","title":"C++ \u306e private \u30e1\u30f3\u30d0\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u624b\u6bb5","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsecret-garden.hatenablog.com%2Fentry%2F2015%2F09%2F12%2F000000\" title=\"C++ \u306e private \u30e1\u30f3\u30d0\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u624b\u6bb5 - Secret Garden(Instrumental)\" 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":"Secret Garden(Instrumental)","url":"https://secret-garden.hatenablog.com/entry/2015/09/12/000000","provider_url":"https://hatena.blog","width":"100%","version":"1.0","blog_url":"https://secret-garden.hatenablog.com/"}