{"id":1489,"date":"2018-12-26T09:30:53","date_gmt":"2018-12-26T01:30:53","guid":{"rendered":"http:\/\/www.yusian.com\/blog\/?p=1489"},"modified":"2018-12-26T09:30:53","modified_gmt":"2018-12-26T01:30:53","slug":"c%e6%99%ba%e8%83%bd%e6%8c%87%e9%92%88auto_ptr%ef%bc%8c%e7%ae%80%e5%8d%95%e5%ae%9e%e7%8e%b0","status":"publish","type":"post","link":"https:\/\/www.yusian.com\/blog\/cpp\/2018\/12\/26\/0930531489.html","title":{"rendered":"C++\u667a\u80fd\u6307\u9488auto_ptr\uff0c\u7b80\u5355\u5b9e\u73b0"},"content":{"rendered":"\n<pre lang=\"cpp\" line=\"1\">\n#include <iostream>\nusing namespace std;\n\ntemplate <class object>\nclass sian_ptr {\npublic:\n    object *m_object;\n    \/\/ \u6784\u9020\u51fd\u6570\u63a5\u6536\u5916\u90e8\u4f20\u5165\u7684\u5806\u7a7a\u95f4\u5bf9\u8c61\n    sian_ptr(object *object) : m_object(object) {}\n    \/\/ \u5f53\u524d\u5bf9\u8c61\u88ab\u91ca\u653e\u65f6\uff0c\u91ca\u653e\u5916\u90e8\u63a8\u7a7a\u95f4\u5185\u5b58\n    ~sian_ptr() {\n        if (m_object == nullptr) return;\n        delete m_object;\n    }\n    \/\/ \u91cd\u8f7d\u8fd0\u7b97\u7b26->\u5de7\u5999\u5730\u5c06\u5f53\u524d\u5bf9\u8c61\u201c\u6307\u5411\u201d\u5916\u90e8\u5bf9\u8c61\n    object* operator->() {\n    \treturn m_object;\n    }\n};\n\nclass Person {\npublic:\n    int m_age;\n    Person() {\n        cout << \"Person()...\" << endl;\n    }\n    ~Person() {\n        cout << \"~Person()...\" << endl;\n    }\n};\nint main() {\n    {\n        \/\/ \u6a21\u62df\u667a\u80fd\u6307\u9488auto_ptr\n        \/\/ auto_ptr<Person> p(new Person());\n        sian_ptr<Person> p(new Person());\n        p->m_age = 12;\n    }\n        system(\"pause\");\n        return 0;\n}\n<\/pre>\n\n\n<p>\u8f93\u51fa\u7ed3\u679c\uff1a<br>\nPerson()&#8230;<br>\n~Person()&#8230;<br>\n\u8bf7\u6309\u4efb\u610f\u952e\u7ee7\u7eed. . .<\/p>","protected":false},"excerpt":{"rendered":"<p>\u8f93\u51fa\u7ed3\u679c\uff1a Person()&#8230; ~Person()&#8230; \u8bf7\u6309\u4efb\u610f\u952e\u7ee7\u7eed. . .<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[210,211],"class_list":["post-1489","post","type-post","status-publish","format-standard","hentry","category-cpp","tag-auto_ptr","tag-211"],"_links":{"self":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/comments?post=1489"}],"version-history":[{"count":0,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/posts\/1489\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/media?parent=1489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/categories?post=1489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yusian.com\/blog\/wp-json\/wp\/v2\/tags?post=1489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}