Open Radar

 
Summary:
If you define a variable as an explicitly unwrapped enum type in swift, switching on its value results in a compile error.

Steps to Reproduce:
Define an enum: 
  1>     enum Method: String {
  2.         case GET = "GET"
  3.         case HEAD = "HEAD"
  4.         case POST = "POST"
  5.         case PUT = "PUT"
  6.         case DELETE = "DELETE"
  7.     }

Declare an explicitly unwrapped variable of that enum's type:  
  9> var foo: Method!

Assign a value to that variable:
 11> foo = .HEAD

Attempt to switch on that variable's value:
14> switch foo {
 15. case .GET: println("get")
 16. case .HEAD: println("head")
 17. default: println("other")
 18. }


Expected Results:
Switch should work as if the variable were a non-optional type

Actual Results:
Compiler error that the enum case is not found on the explicitly unwrapped optional type:

repl.swift:15:7: error: enum case 'GET' not found in type 'Method!'
case .GET: println("get")
      ^
repl.swift:16:7: error: enum case 'HEAD' not found in type 'Method!'
case .HEAD: println("head")

Version:
Xcode 6.1.1, OS X 10.10.2

Notes:


Configuration:


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