How about a HasFlag() extension method just like a regular enum?

I know that @AFM-Horizon is already working (#64) on a SmartFlagsEnum concept for this but I couldn't add an issue on his fork.

HasFlag() is one of the most useful extensions on good old enums. I suppose it wouldn't take much to add that in, given the well-laid out structure of SmartFlagsEnum by @AFM-Horizon.

I would go so far as to have AddFlag() and RemoveFlag() extension methods too, which I have so desperately wished regular enums had. I end-up writing my own AddFlag() and RemoveFlag() methods for most projects where I use enums.

Any thoughts?

Start by reading issue #64 and the referenced SmartFlagsEnum design; this issue names no repository files or tests. Clarify the intended semantics and API for HasFlag(), AddFlag(), and RemoveFlag() with maintainers before implementation; done requires an agreed design and corresponding behavior coverage.

Written by the indexing model from the issue text.