Declaring and using a bit field enum in Swift

Question

How should bit fields be declared and used in Swift?

Declaring an enum like this does work, but trying to OR 2 values together fails to compile:

enum         


        

Answer 1

This worked for me.

• 1 << 0 //0000
• 1 << 1 //0010
• 1 << 2 //0100

• 1 << 3 //1000

    enum Collision: Int {
      case Enemy, Projectile, Debris, Ground
      func bitmask() -> UInt32 {
          return 1 << self.rawValue
        }
    }