Question

Consider

   [Flags]
   public enum State
   {
      IsCool = 0x1,
      SomethingElse = 0x2
   }

I have a State someState and if some expression evaluates to true, I want to unset the IsCool flag of someState regardless of it being already set or unset. This means that I can’t really use someState ^= State.IsCool but what can I use instead?

Answer 1

You need to approach this the reverse way than when setting a flag: bitwise AND the current state with the complement of the flag you want to remove.

someState &= ~State.IsCool;