Qt GUI print global variables

[jefftee]

@jefftee: This has nothing to do with the event loop or event processing. cout is plain old C++. And unfortunately, Arduino and RasPi coding books have brought back the evil global variable with a vengeance. From the names of the variables, this seems to be what this is about.

Thanks, I jumped to the wrong conclusion... I still feel that global variables are an indication that you have poorly designed your classes/interfaces and a crutch used by too many people just to make it work...

Edit: after reviewing the code, he's creating the same variable names in two different namespaces (global and global2) so they are indeed different variables and I don't see where they are ever initialized either.

[d_stranz]

he's creating the same variable names in two different namespaces (global and global2)

Ah, and I missed that detail. Even if he does initialize the variables in the "global" namespace, the variables in "global2" remain uninitialized.

And I agree about global variables also. The closest I ever come are static const variables in cpp module scope or singleton classes that can only have one instance. But as I said, pick up any Arduino or Raspberry Pi coding book and they are in every example. It might be the most straightforward way to teach coding for single board computers, but it teaches bad habits that don't scale well when used in real-world applications.