{"id":383,"date":"2009-02-14T14:28:01","date_gmt":"2009-02-14T05:28:01","guid":{"rendered":"http:\/\/randt.jp\/?p=383"},"modified":"2009-02-14T14:28:01","modified_gmt":"2009-02-14T05:28:01","slug":"this%e3%83%9d%e3%82%a4%e3%83%b3%e3%82%bf%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%9fshared_ptr","status":"publish","type":"post","link":"https:\/\/randt.jp\/?p=383","title":{"rendered":"this\u30dd\u30a4\u30f3\u30bf\u3092\u4f7f\u3063\u305fshared_ptr"},"content":{"rendered":"<p>this\u3092shared_ptr\u3067\u4ed6\u306e\u30af\u30e9\u30b9\u306b\u6e21\u3057\u305f\u3044\u5834\u5408\u306b\u3069\u3046\u3059\u308b\u304b\u3002\u30e1\u30e2\u3002<\/p>\n<pre>\n#include &lt;boost\/shared_ptr.hpp&gt;\n#include &lt;boost\/enable_shared_from_this.hpp&gt;\nusing namespace boost;\n\n#include &quot;Y.h&quot;\nclass X : public enable_shared_from_this&lt;X&gt;\n{\nprivate:\n    Y y_;\npublic:\n    void make_reference();\n};\n\nvoid X::make_reference()\n{\n    \/* Y\u306b\u81ea\u8eab\u3092\u6e21\u3059*\/\n    y_ = new Y(shared_from_this());\n}\n<\/pre>\n<p>\u6ce8\u610f\u70b9\u3001Y\u5074\u306fshared_ptr\u304b\u3089weak_ptr\u306b\u5909\u63db\u3057\u3066\u4fdd\u6301\u3057\u306a\u3044\u3068\u5faa\u74b0\u53c2\u7167\u3068\u306a\u308aX, Y\u3082delete\u3055\u308c\u306a\u3044\u3053\u3068\u306b\u3002\u307e\u305f\u3001shared_ptr\u3092\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3067\u69cb\u7bc9\u3059\u308b\u3068\u3001\u30b3\u30f3\u30b9\u30c8\u30e9\u30af\u30bf\u3092\u629c\u3051\u305f\u6642\u306b\u81ea\u8eab\u304c\u89e3\u653e\u3055\u308c\u3061\u3083\u3046\u3002<\/p>\n<pre>\nclass X\n{\npublic;\n    X() { shared_ptr&lt;X&gt; x = shared_from_this(); } \/\/\/NG\n}\n<\/pre>\n<p>\n\u53c2\u8003\u6587\u732e : <\/p>\n<ul>\n<li><a href=\"http:\/\/boost.cppll.jp\/HEAD\/libs\/smart_ptr\/weak_ptr.htm\">weak_ptr class template\u306eFrequently Asked Questions\u9805<\/a><\/li>\n<li><a href=\"http:\/\/boost.cppll.jp\/HEAD\/libs\/smart_ptr\/sp_techniques.html#from_this\">this \u304b\u3089 shared_ptr \u3092\u7372\u5f97\u3059\u308b<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>this\u3092shared_ptr\u3067\u4ed6\u306e\u30af\u30e9\u30b9\u306b\u6e21\u3057\u305f\u3044\u5834\u5408\u306b\u3069\u3046\u3059\u308b\u304b\u3002\u30e1\u30e2\u3002 #include &lt;boost\/shared_ptr.hpp&gt; #include &lt;boost\/enable_shared_ &#8230;<\/p>\n<p> <a class=\"continue-reading-link\" href=\"https:\/\/randt.jp\/?p=383\"><span>Continue reading<\/span><i class=\"crycon-right-dir\"><\/i><\/a> <\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[34,8,19],"tags":[],"class_list":["post-383","post","type-post","status-publish","format-standard","hentry","category-c","category-tips","category-19"],"_links":{"self":[{"href":"https:\/\/randt.jp\/index.php?rest_route=\/wp\/v2\/posts\/383","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/randt.jp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/randt.jp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/randt.jp\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/randt.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=383"}],"version-history":[{"count":0,"href":"https:\/\/randt.jp\/index.php?rest_route=\/wp\/v2\/posts\/383\/revisions"}],"wp:attachment":[{"href":"https:\/\/randt.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/randt.jp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/randt.jp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}