{"id":75,"date":"2021-07-21T01:19:13","date_gmt":"2021-07-20T17:19:13","guid":{"rendered":"http:\/\/139.224.63.49\/?p=75"},"modified":"2021-07-21T01:19:13","modified_gmt":"2021-07-20T17:19:13","slug":"%e7%94%a8%e6%99%ba%e8%83%bd%e6%8c%87%e9%92%88%e7%9a%84%e4%b8%80%e4%b8%aa%e6%b3%a8%e6%84%8f%e7%82%b9","status":"publish","type":"post","link":"http:\/\/iamnear.top\/?p=75","title":{"rendered":"\u7528\u667a\u80fd\u6307\u9488\u7684\u4e00\u4e2a\u6ce8\u610f\u70b9"},"content":{"rendered":"\n<p>\u6700\u8fd1\u81ea\u5df1\u7528c++\u5199socks5\u670d\u52a1\u5668\uff0c\u4e2d\u95f4\u8bd5\u56fe\u7528\u667a\u80fd\u6307\u9488\u6765\u63a7\u5236client\u7c7b\u7684\u5206\u914d\u4e0e\u91ca\u653e\u3002\u8fbe\u5230\u5728\u8fde\u63a5\u65ad\u5f00\u65f6\uff0c\u81ea\u52a8\u91ca\u653esocket\u7b49\u8d44\u6e90\u7684\u76ee\u7684\u3002\u4f46\u662f\u5199\u7684\u8fc7\u7a0b\u4e2d\uff0c\u53d1\u73b0\u7528\u667a\u80fd\u6307\u9488\u65f6\uff0c\u8981\u5c24\u5176\u6ce8\u610f\u4ec0\u4e48\u65f6\u5019\u4f1a\u8ba9\u667a\u80fd\u6307\u9488\u7684\u8ba1\u6570\u4e3a0\uff0c\u4ece\u800c\u51fa\u53d1\u6790\u6784\u51fd\u6570\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>#include &lt;bits\/stdc++.h>\nusing namespace std;\nclass A\n{\npublic:\n    int a;\n    A()\n    {\n        a = 3;\n    }\n    void remove_first(vector&lt;shared_ptr&lt;A>>&amp; v)\n    {\n        if(v.size()>=1)\n            v.erase(v.begin());\n        cout&lt;&lt;\"a = \"&lt;&lt;a&lt;&lt;\" from A::remove_first\"&lt;&lt;endl;\n    }\n    ~A()\n    {\n        a = 5;\n        cout&lt;&lt;\"destructor\"&lt;&lt;endl;\n    }\n};\nint main()\n{\n    vector&lt;shared_ptr&lt;A>> v;\n    {\n        shared_ptr&lt;A> p = make_shared&lt;A>();\n        v.push_back(p);\n    }\n    v.front()->remove_first(v);\n    return 0;\n}<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u5c06A\u770b\u4f5c\u8981\u7ba1\u7406\u7684\u8d44\u6e90\uff0cv\u662f\u5bb9\u5668\u3002\u5728A::remove_first\u8fd9\u4e2a\u51fd\u6570\u4e2d\uff0c\u9700\u8981\u6ce8\u610f\u5bf9v\u7684\u64cd\u4f5c\u53ef\u80fd\u8ba9\u81ea\u5df1\u7684\u667a\u80fd\u6307\u9488\u88ab\u6790\u6784\uff0c\u4ece\u800c\u5bfc\u81f4\u81ea\u5df1\u88ab\u6790\u6784\uff0c\u7c7b\u4f3cdelete this\u7684\u611f\u89c9\u3002<\/p>\n\n\n\n<p>\u8fd9\u6bb5\u7a0b\u5e8f\u5728gcc8\u7f16\u8bd1\u540e\u8fd0\u884c\u7684\u7ed3\u679c\u662f<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>destructor\na = 5 from A::remove_first<\/code><\/pre>\n\n\n\n<p>\u8bf4\u660e\u7684\u786e\u5728\u6267\u884c\u4e86\u6790\u6784\u51fd\u6570\uff0c\u5e76\u4e14a\u7684\u503c\u4e5f\u88ab\u6539\u53d8\u4e86\u3002\u8bd5\u8bd5\u4e0a\u6790\u6784\u4ee5\u540e\uff0ca\u7684\u503c\u5c31\u662f\u672a\u5b9a\u4e49\u7684\u4e86\u3002<\/p>\n\n\n\n<p>\u603b\u7ed3\u4e0b\uff0c\u5f53\u7528\u667a\u80fd\u6307\u9488\u7ba1\u7406\u5bf9\u8c61\u65f6\uff0c\u5982\u679c\u5bf9\u8c61\u4e2d\u6d89\u53ca\u5230\u5bf9\u667a\u80fd\u6307\u9488\u7684\u91ca\u653e\uff0c\u8981\u8003\u8651\u5230\u91ca\u653e\u7684\u662f\u4e0d\u662f\u81ea\u5df1\uff0c\u5982\u679c\u662f\u81ea\u5df1\uff0c\u5c31\u8981\u8003\u8651\u5230\u81ea\u5df1\u88ab\u6790\u6784\u4ee5\u540e\u5c31\u4e0d\u80fd\u518d\u4f7f\u7528\u4efb\u4f55\u5bf9\u8c61\u6210\u5458\u53d8\u91cf\u4e86\uff0c\u56e0\u4e3a\u6790\u6784\u4ee5\u540e\u8fd9\u4e9b\u90fd\u662f\u672a\u5b9a\u4e49\u7684\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6700\u8fd1\u81ea\u5df1\u7528c++\u5199socks5\u670d\u52a1\u5668\uff0c\u4e2d\u95f4\u8bd5\u56fe\u7528\u667a\u80fd\u6307\u9488\u6765\u63a7\u5236client\u7c7b\u7684\u5206\u914d\u4e0e\u91ca\u653e\u3002\u8fbe\u5230\u5728\u8fde\u63a5&hellip; 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