How about diamond shape header files relationship

[fl]

Hi,

I know there could be some problems for a diamond type classes inheritance. It
is talked about on some C++ books. Recently, when I learn a C++ program, which
is relatively big in my view, I see its header files legend shows a diamond
shape including relationship. As I know these header files have some class
definitions inside. Though header file 'include' is different from class
inheritance, there could be some problems for a diamond including relationship
for header files?


Thanks,

[Paavo Helde]

No problems, assuming that the header files have proper include guards
or #pragma once.

The #include mechanism is just a way to prepare a fully linear source
text for a translation unit, and include guards are a trick to avoid
duplications or infinite recursion during this process. Any diamond
shape include relations effectively just get flattened out by this process.