File names for categories should include the name of the class being extended, e.g. GTMNSString+Utils.h or GTMNSTextView+Autocomplete.h Within a source file, Objective-C++ follows the style of the function/method you're implementing. In order to minimize clashes between the differing naming styles when mixing Cocoa/Objective-C and C++, follow the style of the method being implemented. If you're in