{"height":"190","image_url":null,"version":"1.0","title":" \u7d9a\u30fbmap\u306e\u691c\u7d22\u3068\u5024\u53d6\u5f97","url":"https://faithandbrave.hateblo.jp/entry/20091022/1256181028","type":"rich","provider_url":"https://hatena.blog","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Ffaithandbrave.hateblo.jp%2Fentry%2F20091022%2F1256181028\" title=\" \u7d9a\u30fbmap\u306e\u691c\u7d22\u3068\u5024\u53d6\u5f97 - Faith and Brave - C++\u3067\u904a\u307c\u3046\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_url":"https://faithandbrave.hateblo.jp/","categories":["C++"],"published":"2009-10-22 12:10:28","provider_name":"Hatena Blog","blog_title":"Faith and Brave - C++\u3067\u904a\u307c\u3046","width":"100%","description":"map\u306e\u691c\u7d22\u3068\u5024\u53d6\u5f97\u306e\u7d9a\u304d Steven Watanabe\u3055\u3093\u304c\u300c\u30dd\u30a4\u30f3\u30bf\u3067\u3044\u3044\u3058\u3083\u3093\u300d\u3068\u8a00\u3063\u3066\u3066\u3001 \u30dd\u30a4\u30f3\u30bf\u3092\u76f4\u63a5\u4f7f\u3046\u306e\u304c\u30a4\u30e4\u3060\u3063\u305f\u306e\u3067\u3001\u30dd\u30a4\u30f3\u30bf\u3092\u30e9\u30c3\u30d7\u3057\u305fptr_optional\u3092\u7528\u610f\u3057\u307e\u3057\u305f\u3002 \u30e6\u30fc\u30b6\u30fc\u30b3\u30fc\u30c9\u306f\u3001\u6628\u65e5\u306e\u3068\u307b\u3068\u3093\u3069\u5909\u308f\u308a\u307e\u305b\u3093\u3002(optional\u304cptr_optional\u306b\u306a\u3063\u305f\u3060\u3051) #include <iostream> #include <map> #include <string> template <class T> class ptr_optional { const T* p_; public: ptr_optional() : p_(0) {} ptr_o\u2026","author_url":"https://blog.hatena.ne.jp/faith_and_brave/","author_name":"faith_and_brave"}