当目标类型 是右值引用类型(表达式 是完整类类型,可以是左值或右值(C++17 前)必然是泛左值(纯右值被实质化)(C++17 起))时,结果是亡值。 当目标类型 是指针类型时,结果是纯右值。 (C++11 起) 注解 static_cast也能用来进行向下转换,它不会有运行时检查的开销,但只有在程序(通过某些其他逻...
参考资料: a):http://en.cppreference.com/w/cpp/language/static_cast b):http://en.cppreference.com/w/cpp/language/dynamic_cast c):http://en.cppreference.com/w/cpp/language/const_cast d):http://en.cppreference.com/w/cpp/language/reinterpret_cast e):《Effective C++》条款27:尽量少做转...
根据cppreference的解释，dynamic_cast一共有6种使用方式，其中前面三种都不要求目标类型是多态类型。所以...
注意:所有C++标准的转换均产生局部变量,不实际对原变量修改。 参考文献:dynamic_cast conversion - cppreference.com
26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38. 39. 40. 41. 42. 43. 44. 45. 46. 47. 48. 49. 50. 51. 52. 输出结果 downcast from b2 to d successful 1. 参考文献:dynamic_cast conversion - cppreference.com...
rtti.cpp: [cpp]view plaincopy #include <stdio.h> #include <typeinfo> #include "rtti.h" #pragma warning(disable:4297) static PVOID __cdecl FindCompleteObject(PVOID *); static _RTTIBaseClassDescriptor * __cdecl FindSITargetTypeInstance(PVOID,_RTTICompleteObject...
在容器中,可以使用dynamic_cast<>进行类型转换,以处理不同容器之间的通信和数据传递。 请注意,以上仅为示例,实际使用dynamic_cast<>时需要根据具体场景和需求选择合适的腾讯云产品和服务。 更多关于dynamic_cast<>的信息,可以参考C++官方文档: https://en.cppreference.com/w/cpp/language/dynamic_cast...
http://en.cppreference.com/w/cpp/language/explicit_cast http://en.cppreference.com/w/cpp/language/implicit_cast I think that's close to complete description. (oh, and you don't have anything virtual in Pet, so you can't use dynamic_cast) Last edited on Mar 2, 2013 at 4:24am ...
//en.cppreference.com/w/cpp/language/dynamic_caststatic_assert(TOr<TIsLValueReferenceType<From>,TIsRValueReferenceType<To>>::Value,"Cannot dynamic_cast from an rvalue to a non-rvalue reference");returnForward<To>(*CastChecked<typenameTRemoveReference<To>::Type>(&Arg));}template<...
https://docs.microsoft.com/en-us/cpp/build/reference/gr-enable-run-time-type-information?view=vs-2019docs.microsoft.com/en-us/cpp/build/reference/gr-enable-run-time-type-information?view=vs-2019 typeid操作符 typeid Operatordocs.microsoft.com/en-us/cpp/cpp/typeid-operator?view=vs-2019...