Does the class name underscore the correct way to ensure that the class is not used outside the library?

Question

If I have a helper class defined in a library that I don't want to use outside the library, is the correct hiding mechanism for placing underscores in front of the class name?

part of foo;

class Bar { } // made available to users of the foo library

class _BarHelp { } // hidden from users of the foo library

Or is there an alternative way to hide BarHelp?

Answer 1

Yes, underscores work for class names in the same way that functions, methods, and fields make them available to the library.

Answer 2

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