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C++ Coding Standard
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Rule:  ORG#005

Synopsis:Each file shall directly include each header file upon which declarations it directly depends
Language:C++
Severity Level:3
Category:Code Organization


Description:

A file shall not depend on declarations that are only indirectly included by means of a nested #include directive in some other included header file. Otherwise, it would be unnecessarily difficult to change dependencies of a header file, even if it already was self-contained. It would also be somewhat less obvious which files are the actual users of specific headers.

Exception:an exception to this is the inclusion of "stdafx.h" in Visual Studio. In this header file a lot of files are combined to speed up the compilation process.