{"description":"C++\u3067\u306fstatic\u306e\u8a18\u8ff0\u306f\uff08\u30d5\u30a1\u30a4\u30eb\u30b9\u30b3\u30fc\u30d7\u6642\u306b\u306f\uff09\u7121\u540d\u540d\u524d\u7a7a\u9593(namespace)\u63a8\u5968\u3068\u306e\u3053\u3068\u30fb\u30fb\u30fb \u306a\u306b\u3084\u3089undefined function\u3068\u304b\u3067\u6012\u3089\u308c\u308b\u3002\uff1c\u3053\u308c\u306f\u81ea\u5206\u306e\u30df\u30b9 class a{ public: void set(a* p); a* get(); private: //static a* a_ptr; << \u3053\u308c\u306f\u30d5\u30a1\u30a4\u30eb\u30b9\u30b3\u30fc\u30d7\u3067\u306f\u3088\u304f\u306a\u3044\u3089\u3057\u3044\u30fb\u30fb\u30fb } namespace{ <<\u3053\u308c\u304c\u30ca\u30a6\u3044\u3089\u3057\u3044 a* a_ptr; }; void a::set(a*p){ a_ptr = p; } a* a::get(){ return a_ptr; } \u3053\u3093\u306a\u81ea\u5206\u306e\u30af\u30e9\u30b9\u2026","author_name":"sakusan_net","url":"https://sakusan-net.hatenadiary.org/entry/20071217/1197874247","blog_url":"https://sakusan-net.hatenadiary.org/","height":"190","width":"100%","provider_name":"Hatena Blog","image_url":null,"published":"2007-12-17 15:50:47","type":"rich","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsakusan-net.hatenadiary.org%2Fentry%2F20071217%2F1197874247\" title=\"static\u3067\u6012\u3089\u308c\u305f\u30fb\u30fb\u30fb - \u3055\u304f\u3055\u3093\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>","categories":[],"blog_title":"\u3055\u304f\u3055\u3093\u306e\u65e5\u8a18","author_url":"https://blog.hatena.ne.jp/sakusan_net/","provider_url":"https://hatena.blog","version":"1.0","title":"static\u3067\u6012\u3089\u308c\u305f\u30fb\u30fb\u30fb"}