namespaces for enum types - best practices

Question

Often, one needs several enumerated types together. Sometimes, one has a name clash. Two solutions to this come to mind: use a namespace, or use \'larger\' enum element na

Answer 1

Original C++03 answer:

The benefit from a namespace (over a class) is that you can use using declarations when you want.

The problem with using a namespace is that namespaces can be expanded elsewhere in the code. In a large project, you would not be guaranteed that two distinct enums don't both think they are called eFeelings

For simpler-looking code, I use a struct, as you presumably want the contents to be public.

If you're doing any of these practices, you are ahead of the curve and probably don't need to scrutinize this further.

Newer, C++11 advice:

If you are using C++11 or later, enum class will implicitly scope the enum values within the enum's name.

With enum class you will lose implicit conversions and comparisons to integer types, but in practice that may help you discover ambiguous or buggy code.