{"id":176769,"date":"2020-10-14T19:16:59","date_gmt":"2020-10-14T11:16:59","guid":{"rendered":"http:\/\/4563.org\/?p=176769"},"modified":"2020-10-14T19:16:59","modified_gmt":"2020-10-14T11:16:59","slug":"%e8%a2%ab-c%e7%9a%84%e8%af%ad%e6%b3%95%e9%97%ae%e9%a2%98%e6%8a%98%e7%a3%a8%e4%ba%86%ef%bc%8c%e6%9c%89%e6%b2%a1%e6%9c%89%e5%a4%a7%e4%bd%ac%e5%b8%ae%e6%88%91%e8%a7%a3%e7%ad%94%e4%b8%80%e4%b8%8b","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=176769","title":{"rendered":"\u88ab C++\u7684\u8bed\u6cd5\u95ee\u9898\u6298\u78e8\u4e86\uff0c\u6709\u6ca1\u6709\u5927\u4f6c\u5e2e\u6211\u89e3\u7b54\u4e00\u4e0b\u7591\u60d1"},"content":{"rendered":"
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\u88ab C++\u7684\u8bed\u6cd5\u95ee\u9898\u6298\u78e8\u4e86\uff0c\u6709\u6ca1\u6709\u5927\u4f6c\u5e2e\u6211\u89e3\u7b54\u4e00\u4e0b\u7591\u60d1 <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : rainboat <\/span> <\/i> 3<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n
class Test{ public:     int a, b, c;     Test(int i){         a = i;         b = c = 0;     }     ~Test(){         a = b = c = 0;     } };  int Test::*v[] = {&Test::a, &Test::b, &Test::c};  void f(Test *a, int Test::*b, int c){     a->*b = c; }  int main(){     \/\/ \u8f93\u51fa\u7ed3\u679c\u4e3a 1     cout << &Test::c << endl; } <\/code><\/pre>\n
\u8003\u7814\u5237\u9898\u65f6\u78b0\u5230\u7684\u4e00\u9053\u9898\u4e2d\u7684\u4e00\u90e8\u5206\u4ee3\u7801\uff0c\u6211\u77e5\u9053 Test::\u662f\u7c7b\u7684\u4f5c\u7528\u57df\uff0c\u4f46\u662f\u8fd9\u4e2a&Test::c<\/code>\u662f\u4e2a\u4ec0\u4e48\u4e1c\u897f\uff0c\u8fd8\u6709\u8fd9\u4e2aint Test::*v[] = {&Test::a, &Test::b, &Test::c}<\/code>\u53c8\u662f\u4e00\u4e2a\u4ec0\u4e48\u795e\u5947\u7684\u6570\u7ec4\uff0c\u7ffb\u4e86\u534a\u5929\u4e66\u4e5f\u6ca1\u770b\u51fa\u4e2a\u6240\u4ee5\u7136\uff0c\u4e0a\u7f51\u67e5\u4e5f\u4e0d\u77e5\u9053\u7528\u4ec0\u4e48\u5173\u952e\u8bcd\uff0c\u6709\u6ca1\u6709\u61c2\u7684\u5927\u4f6c\u80fd\u5e2e\u6211\u4e00\u4e0b\u3002<\/p>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (43<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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     \u8cc7\u6df1\u5927\u4f6c : jmc891205 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u53d6\u5740\u64cd\u4f5c\u7b26
    \u6307\u9488\u6570\u7ec4                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : rainboat <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @jmc891205 \u6309\u7406\u8bf4 abc \u90fd\u662f\u7c7b\u7684\u6210\u5458\u53d8\u91cf\uff0c\u6ca1\u6709\u5bf9\u8c61\u7684\u8bdd\u8fd9\u4e9b\u53d8\u91cf\u4e5f\u662f\u4e0d\u5b58\u5728\u7684\uff0c\u4e3a\u5565\u53ef\u4ee5\u5bf9\u5176\u8fdb\u884c\u53d6\u5740\u64cd\u4f5c\u5440                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : ysc3839 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 https:\/\/stackoverflow.com\/questions\/1929887\/is-pointer-to-inner-struct-member-forbidden
    \u5927\u6982\u662f\u8fd9\u79cd\u7528\u6cd5\uff0c\u5177\u4f53\u53eb\u4ec0\u4e48\u6211\u4e5f\u4e0d\u77e5\u9053\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : codehz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6307\u5411\u6210\u5458\u7684\u6307\u9488
    https:\/\/en.cppreference.com\/w\/cpp\/language\/pointer                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : jmc891205 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @rainboat <\/p>\n
    A pointer to non-static member object m which is a member of class C can be initialized with the expression &C::m exactly. Expressions such as &(C::m) or &m inside C’s member function do not form pointers to members. <\/p>\n
    https:\/\/en.cppreference.com\/w\/cpp\/language\/pointer#Pointers_to_data_members                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : jmc891205 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @jmc891205 \u54e6\u4e0a\u53d1\u8fc7\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : rainboat <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @ysc3839 
    @codehz 
    @jmc891205 
    \u611f\u8c22\u611f\u8c22                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : GeruzoniAnsasu <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7c7b\u6210\u5458\u6307\u9488\u662f\u4e00\u4e2a\u504f\u79fb\u91cf
    \"\u88ab
    \"\u88ab<\/p>\n
    \u8f93\u51fa 1 \u7684\u539f\u56e0\u662f\u53ea\u80fd\u627e\u5230 bool \u7684 <<\u91cd\u8f7d
    \"\u88ab<\/p>\n
    \u8981\u7528\u7c7b\u6210\u5458\u6307\u9488\u5fc5\u987b\u6709\u4e00\u4e2a\u5b9e\u4f8b\u5bf9\u8c61\uff0c\u4ee5 object -> *ptr \u7684\u65b9\u5f0f\u4f7f\u7528                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : 52coder <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @GeruzoniAnsasu \u6b63\u89e3\uff0ccout << &Test::c << endl;\u4e0d\u7ba1\u54ea\u4e2a\u6210\u5458\u90fd\u662f 1\uff0c\u8ddf v \u548c f \u51fd\u6570\u6ca1\u5173\u7cfb\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : codehz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @GeruzoniAnsasu \u4e0d\u4e00\u5b9a\u662f\u504f\u79fb\u91cf\uff0c\u5177\u4f53\u503c\u662f\u5b9e\u73b0\u5b9a\u4e49
    \u8003\u8651\u4e00\u4e0b\u865a\u7ee7\u627f\uff0c\u5176\u4e2d\u4efb\u610f\u5b50\u7c7b\u62ff\u51fa\u6765\u90fd\u8981\u53ef\u4ee5->*\u65b9\u5f0f\u8bbf\u95ee                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : by73 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 > An rvalue of arithmetic, enumeration, pointer, or pointer to member type can be converted to an rvalue of type bool.
    > \u6765\u6e90 https:\/\/stackoverflow.com\/a\/25553119<\/p>\n
    \u96be\u602a\u4f1a\u88ab\u8f6c\u6210 bool \u3002\u3002<\/p>\n
    \u504f\u4e2a\u9898\uff1a\u4f60\u8fd9\u662f\u8003\u8bed\u8a00\u5f8b\u5e08\u8d44\u683c\u8bc1\u561b                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : GeruzoniAnsasu <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @by73 \u53c8\u662f\u90a3\u53e5\u8001\u8bdd\u4e86 \u7f16\u8bd1\u5668\u884c\u4e3a\u5b66\u662f c++\u7684\u4e00\u90e8\u5206\uff0c\u52a1\u5fc5\u54c1\u5c1d doge                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : elfive <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6307\u5411\u6210\u5458\u53d8\u91cf\u7684\u6307\u9488\u8fd9\u8bed\u6cd5\u2026\u2026\u771f\u7684\u6709\u7528\u5230\u751f\u4ea7\u73af\u5883\u5417\uff1f<\/p>\n
    \u73b0\u5728\u6709\u4e2a\u8d8b\u52bf\uff0c\u611f\u89c9\u4f1a\u628a\u4eba\u641e\u61f5\u903c\u7684\uff1a\u9759\u6001\u8bed\u8a00\u5f00\u59cb\u878d\u5408\u90e8\u5206\u52a8\u6001\u8bed\u8a00\u7684\u7279\u70b9\uff0c\u52a8\u6001\u8bed\u8a00\u4e5f\u5f00\u59cb\u6162\u6162\u5438\u6536\u9759\u6001\u8bed\u8a00\u7684\u90e8\u5206\u7279\u70b9<\/p>\n
    \u50cf\u6211\u8fd9\u79cd\u4eba\u771f\u4e0d\u662f\u5f88\u80fd\u7406\u89e3\u2026\u2026\u867d\u7136\u4e4b\u524d\u7684\u8bed\u6cd5\u89c4\u5219\u4e5f\u90fd\u80fd\u7528                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : user8341 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @elfive +1\uff0c\u8fd9\u79cd\u8bed\u6cd5\u7684\u4f7f\u7528\u573a\u666f\u662f\u4ec0\u4e48\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : byaiu <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @elfive \u7528\u5728\u4e00\u4e9b\u5e93\u7684\u6838\u5fc3\u90e8\u5206\u5427\u3002\u770b\u8fc7 ns3,\u5b83\u7684 attribute \u7684\u90e8\u5206\u5c31\u7528\u4e86\u8fd9\u4e2a\uff0c\u7ed3\u5408\u4e86 macro \u548c template \u5b9e\u73b0\u4e86\u7c7b\u4f3c qt \u7684 property \u7684\u529f\u80fd\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : codehz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @elfive \u5f53\u7136\u6709\uff0c\u751a\u81f3\u5f88\u591a\u5c5e\u4e8e\u975e\u5f00\u6e90\u7684\u4ee3\u7801\u5e93\u3002\u3002\u3002
    \u4e3e\u4e2a\u4f8b\u5b50\uff0c\u6839\u636e\u9006\u5411\u5de5\u7a0b\u7ed3\u679c\uff08\u5b9e\u9645\u4e0a\u662f\u7b26\u53f7\u8868\u91cc\u76f4\u63a5\u770b\u5230\u7684\uff09\uff0cmc \u57fa\u5ca9\u7248\u5728\u5904\u7406\u6307\u4ee4\u6ce8\u518c\u7684\u65f6\u5019\u4f7f\u7528\u8fd9\u4e2a\u65b9\u6cd5\u628a\u7c7b\u4e2d\u7684\u6210\u5458\u6ce8\u518c\u6210\u6307\u4ee4\u7684\u53c2\u6570\uff0c\u8fd9\u6837\uff0c\u6307\u4ee4\u89e3\u6790\u7a0b\u5e8f\u5c31\u53ef\u4ee5\u5728\u89e3\u6790\u6307\u4ee4\u6587\u672c\u7684\u65f6\u5019\u628a\u53c2\u6570\u586b\u5165\u90a3\u4e2a\u7c7b\u4e86\uff0c\u4e0d\u4f7f\u7528\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u4f60\u5c31\u9700\u8981\u5199\u4e00\u5927\u5806\u5305\u88c5\u51fd\u6570\uff08\u867d\u7136\u5b9e\u8d28\u4e0a\u786e\u5b9e\u7528\u6a21\u677f\u751f\u6210\u4e86\u4ed6\u4eec\uff09                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : zsxzy <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 c++ primer \u90fd\u6709\u8bb2\u5230                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : fps23dot9999 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u653e\u5fc3\uff0c\u8003\u7814\u7edd B \u4e0d\u4f1a\u8003                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : zzlhr <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u770b\u770b\u6307\u9488\u90e8\u5206\u5427                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : codyfeng <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8d8a\u5199 c++\u8d8a\u4e0d\u6562\u8bf4\u81ea\u5df1\u4f1a c++                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : Akiyu <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8ffd\u52a0\u4e00\u4e9b\u7591\u95ee\u548c\u7406\u89e3; <\/p>\n
    Test t;
    f(&t, &Test::a, 10);
    cout << “——————” << endl;
    cout << &Test::a << endl;
    cout << “——————” << endl<\/p>\n
    \u4ece\u4e0a\u9762\u4ee3\u7801\u6c47\u7f16\u540e\u7684\u7ed3\u679c\u53ef\u4ee5\u77e5 &Test::a \u5b9e\u9645\u662f Test \u4e2d a \u7684\u504f\u79fb.
    \u5176\u4e2d a \u4e3a Test \u9996\u5143\u7d20, \u503c\u4e3a 0 (\u8fd9\u70b9\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528 f \u51fd\u6570\u65f6\u7684\u7b2c\u4e8c\u4e2a\u53c2\u6570\u503c\u83b7\u5f97). 
    \u4f46\u662f\u4e3a\u4ec0\u4e48 &Test::a \u6253\u5370\u540e\u7684\u503c\u4e3a 1 (\u503c\u4e3a 0 \u7684\u8bdd\u5e94\u8be5\u662f false. \u6216 0).
    \u5e76\u4e14\u8fd9\u4e2a\u503c\u5728\u53c2\u6570\u4f20\u9012\u65f6\u56fa\u5b9a\u4e3a 1 (\u65e0\u8bba\u662f &Test::a, \u8fd8\u662f &Test::b, \u6216\u8005 &Test::c. \u751a\u81f3\u6210\u5458\u51fd\u6570).<\/p>\n
    \u5173\u4e8e\u503c\u4e3a\u4f55\u4e3a 1 \u6211\u7684\u7406\u89e3\u662f: \u8fd9\u4e9b\u503c\u5b9e\u9645\u7684\u5730\u5740\u4e0d\u53ef\u80fd\u662f 0. \u5373\u4f7f &Test::a \u4e3a 0. \u4ee3\u8868\u5176\u504f\u79fb\u4e3a 0. \u4f46\u548c\u5b9e\u9645\u7684\u5bf9\u8c61\u7ed3\u5408\u540e, \u5176\u771f\u5b9e\u5730\u5740\u4e0d\u53ef\u80fd\u4e3a 0. \u6216\u8bb8\u7f16\u8bd1\u5668\u5bf9\u6b64\u505a\u4e86\u4f18\u5316. <\/p>\n
    \u540e\u7eed:
    \u6211\u8bd5\u8fc7\u53d6\u6210\u5458\u51fd\u6570(\u666e\u901a \/virtual, cv \u9650\u5b9a, \u6211\u672a\u5b9a\u4e49\u4f46\u7f16\u8bd1\u5668\u81ea\u52a8\u751f\u6210\u7684\u51fd\u6570)\u5730\u5740. \u90fd\u53ef\u4ee5\u83b7\u53d6\u5730\u5740. \u4f46\u5176\u6784\u9020\u548c\u6790\u6784\u65e0\u6cd5\u83b7\u53d6. \u5173\u4e8e\u6784\u9020\u4e3a\u4f55\u65e0\u6cd5\u83b7\u53d6. \u6211\u540c\u610f\u8fd9\u4e2a\u7b54\u6848:
    https:\/\/softwareengineering.stackexchange.com\/questions\/245613\/why-doesnt-c-allow-you-to-take-the-address-of-a-constructor
    \u4f46\u662f\u5173\u4e8e\u6790\u6784\u4e3a\u4f55\u65e0\u6cd5\u83b7\u53d6. \u6211\u672a\u5f97\u5230\u6ee1\u610f\u7684\u7b54\u6848. \u6709\u4eba\u77e5\u9053\u4e48?                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : by73 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Akiyu \u770b\u4e0a\u6709\u4e09\u5f20\u56fe\u7684\u90a3\u4e2a\uff0c\u4f60\u53ef\u4ee5\u5c1d\u8bd5 godbolt.org \u53bb\u7f16\u8bd1\u4e00\u4e0b\uff0c\u4f1a\u53d1\u73b0\u7eaf\u7cb9\u662f\u7f16\u8bd1\u5668\u5c06 &Test::a \u8f6c\u6362\u6210\u4e86 bool \u503c\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : zxCoder <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 c++ \u6c38\u8fdc\u5730\u795e
    \u4ee3\u7801\u6700\u4e71\u7684\u4e00\u95e8\u8bed\u8a00                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : codehz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Akiyu \u522b\u5565\u90fd\u4ee5\u6c47\u7f16\u4e3a\u5bfc\u5411\uff0cc++\u8fd9\u73a9\u610f\u5b9e\u73b0\u5b9a\u4e49\u7684\u4e1c\u897f\u5f88\u591a\uff0c\u5982\u679c\u6309\u67d0\u4e2a\u7279\u5b9a\u5b9e\u73b0\u6765\u5b66\uff0c\u5f88\u5bb9\u6613\u5199\u51fa\u4e0d\u53ef\u79fb\u690d\u7684\u4e1c\u897f\u51fa\u6765\uff08\u751a\u81f3\u6709\u4e9b\u7f16\u8bd1\u5668\u5347\u7ea7\u4e5f\u4f1a\u6253\u7834\u539f\u6709\u7684\u5047\u8bbe\uff09
    \u6253\u5370\u4e3a 1 \u7684\u539f\u56e0\u5c31\u662f
    1.\u7f16\u8bd1\u5668\u6ca1\u6709\u627e\u5230\u5408\u9002\u7684 operator<<\u91cd\u8f7d
    2.\u7136\u540e\u53d1\u73b0\u5b58\u5728\u4e00\u6761\u9690\u5f0f\u8f6c\u6362\u89c4\u5219\uff08\u7a7a\u6210\u5458\u6307\u9488\u503c\u53d8\u4e3a false \uff1b\u6240\u6709\u5176\u4ed6\u503c\u53d8\u4e3a true \uff09
    3.\u63a5\u7740\u53d1\u73b0\u5b83\u4e0d\u662f\u7a7a\u6210\u5458\u6307\u9488\uff0c\u5c31\u8f6c\u6362\u6210 true
    (\u6ce8\u610f\uff0c\u8fd9\u91cc\u4e0d\u662f\u8868\u793a\u5b9e\u73b0\u5b9a\u4e49\u7684\u503c\u4e0d\u4e3a 0\uff0c\u5b9e\u9645\u4e0a\u5982\u679c\u6309\u7167\u504f\u79fb\u91cf\u65b9\u5f0f\u5b9e\u73b0\uff0c\u90a3\u5e73\u51e1\u7ed3\u6784\u4f53\u7684\u9996\u4e2a\u5143\u7d20\u5c31\u5e94\u8be5\u662f 0\uff0c\u4f46\u662f\u5b83\u4e0d\u662f\u7a7a\u6210\u5458\u6307\u9488\uff0c\u6240\u4ee5\u4ecd\u7136\u662f true)
    4.\u6807\u51c6\u7ea6\u5b9a\u9ed8\u8ba4\u5e03\u5c14\u7c7b\u578b\u8f93\u51fa\u89c4\u5219\u662f true -> 1 false -> 0\uff0c\u6240\u4ee5\u8fd9\u91cc\u8f93\u51fa 1                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Wirbelwind <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6211\u8bb0\u5f97\u662f offset<\/p>\n
    \u6df1\u5ea6\u63a2\u7d22 C++\u5bf9\u8c61\u6a21\u578b\u4e5f\u8bb2\u8fc7                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : QBugHunter <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u603b\u89c9\u5f97\u8fd9\u662f\u56de\u7684\u7b2c\u56db\u79cd\u5199\u6cd5\u3002\u3002\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : QBugHunter <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u9898\u76ee\u6ca1\u592a\u4ed4\u7ec6\u770b\uff0c\u6211\u6709\u51e0\u4e2a\u95ee\u9898
    1.\u5982\u679c Test \u662f\u4e2a\u7c7b\uff0c\u90a3\u6210\u5458\u53d8\u91cf\u4e3a\u4ec0\u4e48\u662f public \u7684\uff1f
    2.\u5982\u679c Test \u4f5c\u4e3a\u4e00\u4e2a\u7ed3\u6784\uff0c\u4e3a\u4ec0\u4e48\u4e0d\u7528 Test.a\uff0cTest->b \u8fd9\u79cd\u5199\u6cd5?
    3.Test \u7684\u6790\u6784\u51fd\u6570\u91cc\u7684\u90a3\u884c\u4ee3\u7801\u6709\u4ec0\u4e48\u610f\u4e49\uff0c\u4e00\u4e2a\u7c7b\u7684\u6790\u6784\u51fd\u6570\u628a\u6210\u5458\u53d8\u91cf\u7684\u503c\u8bbe\u4e3a 0 \uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : codehz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @QBugHunter #27 \u6709\u610f\u4e49\u554a\uff0c\u5c31\u50cf\u51fd\u6570\u6307\u9488\u6709\u5565\u610f\u4e49\uff0c\u4e3a\u5565\u4e0d\u7528\u51fd\u6570\u4e00\u6837\uff0c\u901a\u8fc7\u6307\u9488\u53ef\u4ee5\u5b9e\u73b0\u95f4\u63a5\u8bbf\u95ee\uff0c\u800c\u8ba1\u7b97\u673a\u79d1\u5b66\u9886\u57df\u7684\u4efb\u4f55\u95ee\u9898\u90fd\u53ef\u4ee5\u901a\u8fc7\u589e\u52a0\u4e00\u4e2a\u95f4\u63a5\u7684\u4e2d\u95f4\u5c42\u6765\u89e3\u51b3(
    \u603b\u6240\u5468\u77e5\uff0cc++\u6682\u65f6\u8fd8\u6ca1\u6709\u7f16\u8bd1\u671f\u53cd\u5c04\u8fd9\u79cd\u4e1c\u897f\uff0c\u6ca1\u6cd5\u6309\u7167\u540d\u5b57\u6765\u8bbf\u95ee\u672a\u77e5\u7c7b\u578b\u7684\u6210\u5458\uff0c\u4f46\u662f\u6709\u4e86\u8fd9\u4e2a\u673a\u5236\uff0c\u4f60\u81f3\u5c11\u53ef\u4ee5\u8ba9\u7528\u6237\u4f20\u5165\u6210\u5458\u7684\u6307\u9488\uff0c\u7136\u540e\u5728\u6a21\u677f\u51fd\u6570\u4e2d\u5b9e\u73b0\u5bf9\u6210\u5458\u7684\u64cd\u4f5c\u3002\u3002\u3002
    \u8fd9\u79cd\u4e8b\u5728 c \u7684\u4e16\u754c\u4e5f\u4e0d\u662f\u6ca1\u6709\uff0c\u90a3\u65f6\u5019\u901a\u5e38\u90fd\u662f\u7528\u504f\u79fb\u91cf\uff08 offsetof \uff09\uff0c\u663e\u7136\u76f4\u63a5\u7684\u504f\u79fb\u91cf\u5728 c++\u7684\u4e16\u754c\u6709\u8bf8\u591a\u6c34\u571f\u4e0d\u548c\u7684\u95ee\u9898\uff08\u4f8b\u5982\u591a\u7ee7\u627f\u7684\u95ee\u9898\u548c\u7c7b\u578b\u5b89\u5168\u7684\u95ee\u9898\uff09\uff0c\u81ea\u7136\u8981\u8bbe\u8ba1\u4e00\u4e2a\u9002\u5408\u4e8e c++\u7684”\u504f\u79fb\u91cf”\u89e3\u51b3\u65b9\u6848\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : QBugHunter <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @codehz 
    \u4f60\u662f\u56de\u590d\u6211 3 \u4e2a\u95ee\u9898\u4e2d\u7684\u90a3\u4e2a\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : codehz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @QBugHunter #29 \u662f\u56de\u7684\u7b2c\u56db\u79cd\u5199\u6cd5\uff08
    \u5176\u4ed6\u4e09\u4e2a\u95ee\u9898\u6ca1\u5565\u597d\u95ee\u7684\uff0c\u95ee\u5c31\u662f\u4f5c\u8005\u60f3\u8fd9\u6837\u505a\u800c\u5df2\uff0c\u6bd5\u7adf\u76ee\u7684\u4e0d\u662f\u4e3a\u4e86\u53ef\u7ef4\u62a4\u6027\u4ec0\u4e48\u7684\uff0c\u5c31\u4e3a\u4e86\u6f14\u793a \/\u5b9e\u9a8c\u8fd9\u4e2a\u7528\u6cd5\u3002\u3002\u3002
    —
    \u6211\u731c\u6d4b\u4f60\u53ef\u80fd\u628a\u8fd9\u4e2a\u7528\u6cd5\u5f53\u4f5c\u201c\u7ed5\u8fc7 private \u8bbf\u95ee\u201d\u7684\u7528\u6cd5\u4e86\uff0c\u624d\u4f1a\u6709\u8fd9\u4e09\u4e2a\u95ee\u9898\uff08                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Hconk <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @QBugHunter 
    1. C++ \u5141\u8bb8\u53d8\u91cf\u662f public \u7684\uff0c\u8fd9\u91cc\u7684\u53d8\u91cf\u5c31\u662f\u7528 public \u4fee\u9970\u3002
    2. .\u548c-> \u662f\u7c7b\u7684\u5b9e\u4f8b\u5316\u5bf9\u8c61\u4f7f\u7528\u7684\uff0c\u7c7b\u901a\u8fc7::\u8bbf\u95ee\u6210\u5458\u3002
    3. \u672c\u8eab\u8fd9\u6bb5\u4ee3\u7801\u5c31\u6ca1\u4ec0\u4e48\u610f\u4e49\uff0c\u53ea\u662f\u7528\u6765\u6f14\u793a\u8bed\u6cd5\u7684\u3002\u3002\u6790\u6784\u51fd\u6570\u6ca1\u4ec0\u4e48\u610f\u4e49\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : QBugHunter <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @codehz 
    \u4e0d\u662f\u3002\u3002\u3002\u6211\u7684\u610f\u601d\u662f\u8fd9\u79cd\u8bed\u6cd5\u662f\u5426\u6709\u5b9e\u9645\u7528\u9014\uff0c\u4e5f\u5c31\u662f\u8bf4\u5c06\u7c7b\u7684\u6210\u5458\u8bbe\u4e3a\u516c\u6709\uff0c\u76f4\u63a5\u64cd\u4f5c\u7c7b\u6210\u5458\u800c\u4e0d\u662f\u901a\u8fc7\u63a5\u53e3\uff0c\u56e0\u4e3a\u5728\u6211\u770b\u6765\uff0c\u516c\u6709\u7c7b\u6210\u5458\u662f\u975e\u5e38\u5371\u9669\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : v2Mark <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6709\u610f\u601d\u7684\u9898\u76ee\uff0c\u8003\u5bdf\u7684\u8fd8\u633a\u7ec6\u8282\u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : wutiantong <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @QBugHunter \u6211\u5012\u89c9\u5f97\u65e0\u8111\u4e0a getter setter \u90a3\u624d\u53eb\u8131\u88e4\u5b50\u653e\u5c41\uff0c\u591a\u6b64\u4e00\u4e3e\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : user8341 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7f16\u8bd1\u7684\u65f6\u5019\u4e0d\u77e5\u9053\u8981\u8bbf\u95ee\u54ea\u4e2a\u6570\u636e\u6210\u5458\uff0c\u6267\u884c\u7684\u65f6\u5019\u624d\u77e5\u9053\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : codehz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @QBugHunter #32 
    \u9996\u5148\uff0cc++\u7684 class \u548c struct \u6839\u672c\u6ca1\u6709\u81ea\u5e26\u7acb\u573a\uff0c\u53ea\u662f\u67d0\u4e9b\u7f16\u7801\u89c4\u8303\u5f3a\u52a0\u7684\u5c5e\u6027\u3002\u3002\u3002
    \u5176\u6b21\uff0c\u76f4\u63a5\u8bbf\u95ee\u6210\u5458\u7684\u5371\u9669\u6027\u5728\u4e8e\u7834\u574f\u4e86\u6f5c\u5728\u7684\u7ef4\u62a4\u6027\uff0c\u4f46\u524d\u63d0\u662f\u5b83\u771f\u7684\u662f\u9700\u8981\u9690\u85cf\u7684\u5b9e\u73b0\u7ec6\u8282\u3002\u3002\u3002
    \u7136\u540e\u8fd9\u4e2a\u8bed\u6cd5\u4e5f\u4e0d\u662f\u4e0d\u53ef\u4ee5\u5728\u7c7b\u5185\u90e8\u5bfc\u51fa\u6210\u5458\u6307\u9488\u3002\u3002\u3002
    \u6700\u540e\uff0c\u8fd9\u4e2a\u8bed\u6cd5\u4e5f\u662f\u53e6\u4e00\u4e2a\u5c42\u9762\u7684\u201c\u63a5\u53e3\u201d\uff0c\u53ea\u4e0d\u8fc7\u62bd\u8c61\u7a0b\u5ea6\u66f4\u9ad8\uff0c\u800c\u4e0d\u5177\u5907\u4e00\u822c\u610f\u4e49\u4e0a\u7684\u5f62\u5f0f\u800c\u5df2\u3002
    \u76f8\u5f53\u4e8e\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7279\u5b9a\u4e0a\u4e0b\u6587\u4e0b\uff0c\u8bbe\u7f6e\u548c\u8bfb\u53d6\u7279\u5b9a\u503c\u7684\u65b9\u6cd5\u3002
    \u7136\u540e\u5b83\u4eec\u90fd\u53ef\u4ee5\u88ab\u6a21\u677f\u5316\uff08\u4e0a\u4e0b\u6587\u7c7b\u7531\u7528\u6237\u7f16\u8bd1\u671f\u6307\u5b9a\uff0c\u7528\u6210\u5458\u51fd\u6570\u6765\u6307\u5b9a\u7279\u5b9a\u7684\u6210\u5458\uff09\uff0c\u53ea\u8981\u4f60\u8ba4\u540c\u6a21\u677f\u7684\u5c01\u88c5\u7684\u529f\u80fd\uff0c\u4f60\u5c31\u5e94\u8be5\u7406\u89e3\u8fd9\u79cd\u8bed\u6cd5\u4e5f\u6709\u5b83\u5b58\u5728\u7684\u610f\u4e49\uff08\u7ed3\u5408\u4e0a\u9762\u7684\uff09\u3002\u3002\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : no1xsyzy <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @QBugHunter \u5982\u679c\u4e0d\u9700\u8981\u7c7b\u4f3c ORM \u53cd\u5c04\u4e4b\u7c7b\u7684\u4fee\u6539\u5b58\u53d6\u8fc7\u7a0b\uff0c\u90a3\u7528 getter \u548c setter \u6ca1\u4ec0\u4e48\u610f\u4e49\uff0c\u81f3\u4e8e\u67d0\u5929\u7a81\u7136\u53d1\u73b0\u9700\u8981\u4e86\uff0c\u8fd8\u53ef\u4ee5\u4e00\u952e\u91cd\u6784\u3002
    \u53e6\u5916\uff0c\u8fd9\u4e2a\u8bed\u6cd5\u542c\u8d77\u6765\u4e5f\u53ef\u4ee5\u53d8\u6210\u6307\u5411\u65b9\u6cd5\u7684\u6307\u9488\uff0c\u4e4b\u540e\u53ef\u4ee5 obj->*methp(params) \uff0c\u4e0d\u77e5\u9053\u6709\u6ca1\u6709\u7406\u89e3\u9519\u2026\u2026                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : ysc3839 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @no1xsyzy 
    > \u53e6\u5916\uff0c\u8fd9\u4e2a\u8bed\u6cd5\u542c\u8d77\u6765\u4e5f\u53ef\u4ee5\u53d8\u6210\u6307\u5411\u65b9\u6cd5\u7684\u6307\u9488<\/p>\n
    \u5e94\u8be5\u662f\u53ef\u4ee5\u7684\uff0cstd::bind \u5c31\u662f\u7c7b\u4f3c\u7684\u5199\u6cd5\u3002                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : GeruzoniAnsasu <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @user8341 
    @elfive <\/p>\n
    https:\/\/doc.qt.io\/qt-5\/signalsandslots.html                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : Tony042 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @ysc3839 \u8fd9\u4e2a\u662f class member pointer \u548c class member function pointer,\u662f\u53ef\u4ee5\u6307\u5411\u65b9\u6cd5\u7684\uff0cstd::bind \u548c\u8fd9\u4e2a\u5173\u7cfb\u4e0d\u592a\u5927\uff0cbind \u5bf9 function\uff0cfunction like\uff0c\u548c member function pointer \u505a\u4e86\u504f\u7279\u5316\uff0c\u6211\u611f\u89c9\u7528\u8d77\u6765\u533a\u522b\u8fd8\u662f\u5f88\u5927\u7684\uff0cbind \u4e3b\u8981\u662f\u7528\u6765\u56fa\u5b9a\u548c\u8c03\u6574\u67d0\u4e9b function parameter\uff0cclass member function pointer \u8fd9\u4e1c\u897f\u5c31\u662f C++\u9ed1\u79d1\u6280\u4e4b\u4e00\uff0c\u6709\u7528\u5230\u7684\u65f6\u5019\uff0c\u4f46\u7528\u7684\u60c5\u51b5\u4e0d\u662f\u5f88\u591a                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : codehz <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Tony042 \u8fd8\u662f\u6709\u70b9\u5173\u7cfb\u7684\uff0cstd::bind \u4e5f\u53ef\u4ee5\u5e94\u7528\u4e8e\u6307\u5411\u6210\u5458\u7684\u6307\u9488
    std::bind(&Test::a, _1)\u662f\u53ef\u884c\u7684\uff08\u76f8\u5f53\u4e8e\u62ff\u5230\u4e86\u4e00\u4e2a int &(Test&)\u7684\u51fd\u6570\uff09                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : littlewing <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u679c\u7136\u8fd9\u8f88\u5b50\u90fd\u5b66\u4e0d\u4f1a c++\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
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     \u8cc7\u6df1\u5927\u4f6c : Wirbelwind <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @Tony042 <\/p>\n
    x64 \u4e0a\uff0c\u5bf9\u6210\u5458\u51fd\u6570\uff0c\u53ef\u4ee5\u6539\u53d8\u51fd\u6570\u5199\u6cd5 
    class.func(a,b,c); -> func_converted(&class,a,b,c);
    std::mem_fun \uff08\u539f\u51fd\u6570\u6700\u591a\u4e24\u4e2a\u53c2\u6570\uff0c\u5426\u5219\u4e0d\u80fd\u7f16\u8bd1\uff09<\/p>\n
    \u5bf9\u6210\u5458\u53d8\u91cf\uff0c\u901a\u8fc7\u4e0a\u9762\u7684\u65b9\u6cd5\u53ef\u4ee5\u62ff\u5230\u5bf9\u5e94\u7684\u6210\u5458\u53d8\u91cf
    auto interface = std::mem_fn(&class::data);
    interface(&class);                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u88ab C++\u7684\u8bed\u6cd5\u95ee\u9898\u6298\u78e8\u4e86\uff0c\u6709\u6ca1\u6709…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/176769"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=176769"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/176769\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=176769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=176769"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=176769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}