当编译器隐式定义的默认构造函数是一个 trivial default constructor 时,那么该 trivial default constructor 什么也不做 那么当编译器隐式定义的默认构造函数是一个 non-trivial default constructor 时,该 non-trivial default constructor 调用这个类的各基类和各非静态成员的默认构造函数 通过以上,我们已经知道了编译...
在g++中,可以通过使用-std=c++11来启用这个特性(我用的是g++4.9.2,默认是开启的)。 参考链接:http://blog.csdn.net/pongba/article/details/1684519https://en.wikipedia.org/wiki/C%2B%2B11#Explicitly_defaulted_and_deleted_special_member_functionshttp://en.cppreference.com/w/cpp/language/move_construc...
class DataOnly { public: DataOnly () // default constructor ~DataOnly () // destructor DataOnly (const DataOnly & rhs) // copy constructor DataOnly & operator=(const DataOnly & rhs) // copy assignment operator DataOnly (const DataOnly && rhs) // C++11, move constructor DataOnly & ...
class A{public:A()=default;// Default constructorA(constA&)=default;// Copy constructorA(A&&)=default;// Move constructor(since C++11)A&operator=(constA&)=default;// Copy assignment operatorA&operator=(A&&)=default;// Move assignment operator (since C++11)~A()=default;// Destructor}; ...
// 输出:Move constructor called. // 使用移动赋值运算符转移所有权 MyClass obj3; obj3 = std::move(obj2); // 输出:Move assignment operator called. // 此时,obj1和obj2的数据指针应该为空,而obj3拥有数据的所有权 return 0; } 如果类没有移动构造函数怎么办?
DataOnly ()// default constructor~DataOnly ()// destructorDataOnly (constDataOnly & rhs)// copy constructorDataOnly &operator=(constDataOnly & rhs)// copy assignment operatorDataOnly (constDataOnly && rhs)// C++11, move constructorDataOnly &operator=(DataOnly && rhs)// C++11, move assignmen...
Even though some of the base classes ofViewCtorProphave constructors that take arguments by rvalue reference, these constructors do not subsequently move the passed arguments. Hence, they may ultimately not move. For example, the following test fails: ...
MoveRestoreOption MoveToDropIndexOption MultiPartIdentifier MultiPartIdentifierCallTarget NamedTableReference NameFileDeclarationOption NextValueForExpression NonTransactedFileStreamAccess NullableConstraintDefinition NullIfExpression NullLiteral NullNotNull NumericLiteral ...
CustomXmlMoveFromRangeStart CustomXmlMoveToRangeEnd CustomXmlMoveToRangeStart CustomXmlPlaceholder CustomXmlProperties CustomXmlRow CustomXmlRuby CustomXmlRun DataBinding DataSourceObject DataSourceReference DataSourceTableName DataType DateFormat DateFormatValues DayLong DayShort DecimalNumberType DecimalSymbol De...
Constructors Properties ApplicationEndpoints BackupRestoreServiceReplicatorEndpoint CentralSecretServiceReplicatorEndpoint ClientConnectionEndpoint ClusterConnectionEndpoint ClusterManagerReplicatorEndpoint DefaultReplicatorEndpoint EphemeralEndpoints EventStoreServiceReplicatorEndpoint FailoverManagerReplicatorEndpoint Fault...