[hawflakes]

> enum case with parameters Ah, this is a language feature of enums in Swift. Swift enums allow you to keep associated values with a specific case and you need to unpack them with a `let` when dealing with that value.

E.g.

  enum Animal {
   case lion
   case tiger
   case bear
   case ohMy(Int)
  }

The case `ohMy(Int)` means that it has an associated value so when you want to get at it from a variable, say:

  var a:Animal

  switch a {
   case .ohMy(let value):
      // do something with `value`
   ...
  }