{"published":"2015-06-29 20:54:38","author_name":"osyo-manga","blog_url":"https://secret-garden.hatenablog.com/","type":"rich","image_url":null,"version":"1.0","blog_title":"Secret Garden(Instrumental)","url":"https://secret-garden.hatenablog.com/entry/2015/06/29/205438","categories":["C++"],"width":"100%","author_url":"https://blog.hatena.ne.jp/osyo-manga/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsecret-garden.hatenablog.com%2Fentry%2F2015%2F06%2F29%2F205438\" title=\"std::weak_ptr \u306b\u3064\u3044\u3066\u8efd\u304f\u8abf\u3079\u3066\u307f\u305f - 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>","title":"std::weak_ptr \u306b\u3064\u3044\u3066\u8efd\u304f\u8abf\u3079\u3066\u307f\u305f","provider_name":"Hatena Blog","provider_url":"https://hatena.blog","description":"std::weak_ptr \u306b\u3064\u3044\u3066\u8efd\u304f\u8abf\u3079\u3066\u307f\u305f\u3002 C++ \u306e\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u307e\u308f\u308a\u306e\u77e5\u8b58\u306f\u5168\u7136\u306a\u304b\u3063\u305f\u308a\u3059\u308b\u3002 [std::weak_ptr] std::shared_ptr \u304c\u53c2\u7167\u30ab\u30a6\u30f3\u30c8\u3092\u4f7f\u7528\u3057\u3066\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u6240\u6709\u6a29\u3092\u7ba1\u7406\u3059\u308b\u306e\u306b\u5bfe\u3057\u3066\u3001std::weak_ptr \u306f\u6240\u6709\u6a29\u3092\u6301\u305f\u305a\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u53c2\u7167\u3059\u308b\u3060\u3051\u306e\u30b9\u30de\u30fc\u30c8\u30dd\u30a4\u30f3\u30bf\u306b\u306a\u308b\u3002 \u4f8b\u3048\u3070 std::shared_ptr \u306e\u5834\u5408\u306f\u3001 std::shared_ptr<X> shared1; { std::shared_ptr<X> shared2{new X{}}; shared1 = shared2; // shared1 \u304c X \u2026","height":"190"}