classMan:publicPerson { public: Man(void); ~Man(void); private: Person child; }; error C2504: “Person” : 未定义基类 error C2504: “Person” : 未定义基类 Code ///Man.h/// #pragmaonce //#include "person.h"//去掉 classPerson;//加入 classMan:publicPerson { public: Man(void); ...
classMan :publicPerson { public: Man(void); ~Man(void); private: Person child; }; ///Man.h/// #pragmaonce //#include "person.h" //去掉 classPerson;//加入 classMan:publicPerson { public: Man(void); ~Man(void); private: Person child; }; error C2504: “Person” : 未定义基类 ...
classMan :publicPerson { public: Man(void); ~Man(void); private: Person child; }; ///Man.h/// #pragmaonce //#include "person.h" //去掉 classPerson;//加入 classMan:publicPerson { public: Man(void); ~Man(void); private: Person child; }; error C2504: “Person” : 未定义基类 ...
在本地开发环境中我们很少会遇到需要对jvm进行优化的需求，但是到了生产环境，我们可能将有下面的需求： 运行的应用“卡住了”，日志不输出，程序没有反应服务器的CPU负载突然升高 在多线程应用下，如何分配线程的数量？ …… 说明：使用的jdk版本为1.8。
WgUserModel.h:16:26:error:attempting to use the forwardclass'WgBaseObject'assuperclassof'WgUserModel'@interfaceWgUserModel:WgBaseObject^WgUserModel.h:14:22:note:forward declarationofclasshere@classPicturesModel,WgBaseObject; 意思是WgUserModel编译时父类WgBaseObject还未编译,一般是在pch文件里父类没有在...
I have an error that goes like this In file included from Level.hpp:12, from main.cpp:4: Corridor.hpp: In method `voidGame::Corridor::update()': Corridor.hpp:41: invalid use of undefined type `class Game::Level'Corridor.hpp:13: forward declaration of `classGame::Level'Corridor.hpp:...
error: 'TTF_Font' has a previous declaration here. Points to the following line of code:typedef struct _TTF_Font TTF_Font;in SDL_ttf.h. I've narrowed it down to the following files in a new test project: Foo.h: #ifndefFOO_H#defineFOO_HstructTTF_Font;classFoo{ ...
include/BaseBodyDynamics.h:21: error: forward declaration of 'struct Xlib::Quatf' basically i tried forward declaring the class Quat . Then had a variable declared in the header file which was a pointer. When i try using the variable in the cpp file after including Quaternion.h which is ...
class People { public: Boy boy; }; test.cpp:7:9: error: field ‘boy’ has incomplete type Boy boy; ^ 会编译错误,因为Boy boy定义了一个Boy类型变量,编译器为boy分配内存空间的时候必须知道boy的大小,必须包含定义Boy类的boy.h文件。 这是可以采用指针来代替 ...
I also have a forward-declaration of a template class like this: template <class T> class NDataObjectTx; class NETLIBC_EXPORT netLibC { template <typename T> bool getDataObject(NDataObjectTx<T> **dataObject); ... In linux everything compiles without a problem but in windows I'm getti...