Linked Questions

#include "stdafx.h" #include <iostream> class X { public: static int n; }; int X::n; // out-of-class initialization int _tmain(int argc, _TCHAR* argv[]) { X x; std::cout <&...

I know this question has already been asked, but googling around I didn't find a real answer to it. What I mean is: static member functions (and also non-static ones, for that matter) can be defined ...

Consider the following code: #include "stdafx.h" #include <iostream> class Eelement { public: static int m_iVal; }; int Eelement::m_iVal = 33; int main() { //... return 0; } ...

I'm using C++17 and stumbled on a linker error with this kind of code #include <memory> struct SomeType { static const int MIN = 0; static const int MAX = 0; }; struct Range { ...

Here is some code: class aclass { int x = 1; static float peanut; //definition not allowed here or in any other class }; float aclass::peanut = 5.2; //definition seems to only be allowed at ...

Attempted to build a doubly linked list and printing it out. However, I received a linker command failed after adding "static Node* lastAdded". Not sure what the reason is. Also, for the head node, I ...

I was coding a class template to implement a Singleton when an issue occured. While having a static pointer in a .h file, it wouldnt compile because of a linker issue (lnk 2001 and lnk 1120 on vs 15)....

This code works fine as an implementation of Singleton pattern. I want to understand Singleton *Singleton::obj = 0;. What is that doing and why is that important? Please explain. #include <...

using namespace std; class singleton_l //lazy { private: singleton_l(){cout << "lazy singleton created" << endl;} ~singleton_l(){} static ...

I'm using Xcode 9.0 for a school assignment, a simple command line program. Getting these odd errors related to static class vars in my one class. I have read several similar questions and have tried ...

Before C++11, we could only perform in-class initialization on static const members of integral or enumeration type. Stroustrup discusses this in his C++ FAQ, giving the following example: class Y { ...

I am trying to define a public static variable like this : public : static int j=0; //or any other value too I am getting a compilation error on this very line : ISO C++ forbids in-...

I know that non-constant static variables need to be initialized outside the class definition but, is there a reason for this? class A { static int x = 0 // compile error; static int y; }; ...

In the class: class foo { public: static int bar; //declaration of static data member }; int foo::bar = 0; //definition of data member We have to explicitly define the static variable, otherwise ...

Scott Meyers writes in Effective Modern C++ (Item 30, at page 210) that there's no need to define integral static const data members in classes; declarations alone suffice, then the sample code is ...