C++11 standard conformant bitmasks using enum class

Question

Can you implement standard conformant (as described in 17.5.2.1.3 of the n3242 draft) type safe bitmasks using enum class? The way I read it, a type T is a bitmask if it support

Answer 1

Scoped enumerations (those created with either enum class or enum struct) are not classes. They cannot have member functions, they just provide enclosed enumerators (not visible at namespace level).