C++使用非常量静态成员(non-const static data member) 误区一:将非常量静态成员放到private里 非常量静态成员的错误使用方法 静态成员只跟类有关,是所有对象共有的属性,如果在类中初始化则意味着每个对象都初始化一次,这样就需要非静态成员了。非常量静态成员函数不可以在类中初始化,一定要在类外把类名作为命名空...
../../third_party/webrtc/pc/rtp_sender.h:187:32: error: non-const static data member must be initialized out of line 1. 2. 解决 解决方法: 将非const类型的静态变量拿到类外去初始化。 例子: // 错误定义方式 class Test { int a; const int b = 1; static int c = 2;//wrong } //...
int static length_ = 2; }; 会报错non-const static data member must be initialized out of line 解决方法: solu-1: 把此静态成员变量加设为const solu-1-eg. #include <iostream> class Cube { const int static length_ = 2; }; solu-2:把次静态成员变量放到类外定义 solu-2-eg. #include <i...
visita.cpp:10:21: sorry, unimplemented: non-staticdata member initializers visita.cpp:10:21: error: ISO C++ forbids in-classinitializationof non-conststaticmember ‘visitato’ At my home it works fine but here in the university it doesn't. The command to executed has been posted by our te...
int64_t_ZNK7Point3d11mangitude3dEv(constPoint3d*constthis) 由上可进一步辅助深度探索C++对象模型关于nonstatic member function的如下描述 1. 改写函数的signature(注:意指函数原型)以安插一个额外的参数到member function中,用以提供一个存取管道,使class object得以调用该函数。该额外参数为this指针 ...
采纳回答:C++标准只允许static constant intergral或者枚举类型的数据在类内进行初始化。 引用:C++03 9.4.2 Static data members §4 If a static data member is of const integral or const enumeration type, its declaration in the class definition can specify a constant-initializer which shall be an integ...
2 How to initialize static const pointer in a class? 111 How to initialize a "static const" data member in C++? 7 Non static const data members 5 Initialize non-const static member variables in C++, through a static member function 1 how to initialize a non-static const variable in...
constexpr int value=a+b; ^ ttt.cc: In function ‘int main()’: ttt.cc:14:30: error: invalid use of non-static data member ‘Add_<2, 3>::value’ constexpr int x1=Add_<2,3>::value; ^~~~ ttt.cc:6:24: note: declared here const...
1. Invalid Use Of Non-Static DATA Member. 2. bookarray Was Not Declared in this scope. 3. Line 32 : cannot resolved address of overloaded function. Actually there seems to be no problem if i do it without classes. I could use dynamic allocation via pointers but question as strictly dema...