{"author_url":"https://blog.hatena.ne.jp/setuna-kanata/","title":"traits","description":"\u7279\u6027\u3002\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u5f15\u6570\u306b\u6e21\u3055\u308c\u305f\u578b\u3001\u5b9a\u6570\u306b\u3088\u3063\u3066\u52d5\u4f5c\u3092\u5207\u308a\u66ff\u3048\u308b\u3002 \u4f8b\u3048\u3070\u3001shared_ptr\u3067void\u3092\u6e21\u3059\u3068\u3001 shared_ptr< void > p; operator*()\u306e\u623b\u308a\u5024\u306e\u578b\u304cvoid&\u306b\u306a\u308b\u306e\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002 template < typename T > class shared_ptr { ... T& operator*()const{ return *ptr; } ... }; T\u304cvoid\u4ee5\u5916\u2192T& T\u304cvoid\u2192void \u306e\u3088\u3046\u306b\u3001T\u306e\u578b\u306b\u3088\u3063\u3066\u623b\u308a\u5024\u306e\u578b\u3092\u9078\u629e\u3057\u305f\u3044\u308f\u3051\u3067\u3059\u3002 \u3061\u306a\u307f\u306btemplate\u5185\u306e\u95a2\u6570\u306e{...}\u306f\u547c\u3073\u51fa\u3057\u51e6\u7406\u2026","provider_name":"Hatena Blog","height":"190","width":"100%","blog_url":"https://setuna-kanata.hatenadiary.org/","published":"2008-11-29 21:56:05","provider_url":"https://hatena.blog","url":"https://setuna-kanata.hatenadiary.org/entry/20081129/1227963365","version":"1.0","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsetuna-kanata.hatenadiary.org%2Fentry%2F20081129%2F1227963365\" title=\"traits - while( c++ );\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","image_url":null,"author_name":"setuna-kanata","categories":["C++"],"blog_title":"while( c++ );"}