How to define a const double inside a class's header file?

Question

Inside the header file of my class, I am trying the following and getting compiler complaints:

private:
    static const double some_double= 1.0;
         


        

Answer 1

I've worked around this issue by doing this:

//my_class.hpp
const double my_double() const {return 0.12345;}

//in use
double some_double = my_class::my_double();

I got the idea from

math::pi()