static map initialization

Question

I have the following code :I have the following code:

//MyClass.h
class MyClass {
public:
      typedef std::map OpMap;
      static          


        

Answer 1

As you are using VS2010, you need to initialize your static member in MyClass.cpp, in front of any other member function definitions. call MyClass::InitMap() if you want to initialize opMap_.

MyClass.h

class MyClass
{
public:
  MyClass(void);
  ~MyClass(void);
public:
   typedef std::map OpMap;
   static OpMap opMap_;    
   static void InitMap();
};

MyClass.cpp

std::map MyClass::opMap_;
MyClass::MyClass(void)
{
   InitMap(); // just sample if you want to initialize opMap_ inside MyClass constructor
}

void InitMap()
{
  MyClass::opMap_["x"] = 1;
}