Open Radar

 
Summary:
It does not appear possible to have a boolean test (e.g. in an if statement) to see if a Swift enum has a certain simple value, if the enum type has values with associated information.

Steps to Reproduce:
Open the attached playground, which contains the code:

enum Storm {
    case Rain
    case Tropical(String)
}

let storm: Storm = .Rain
if storm == .Rain {
}


Expected Results:
The code compiles

Actual Results:
The next to last line triggers a syntax error: 

Binary operator '==' cannot be applied to operands of type Storm and '_'

Version:
Version 8.0 beta 6 (8S201h)

Notes:
The code gets a slightly different error, "Binary operator '==' cannot be applied to operands of type Storm and Storm", if the enum literal is fully qualified:

enum Storm {
    case Rain
    case Tropical(String)
}

let storm: Storm = .Rain
if storm == Storm.Rain {
}

The code compiles if there is no associated value, e.g.:

enum Storm {
    case Rain
    case Tropical
}

let storm: Storm = .Rain
if storm == .Rain {
}


Configuration:


Attachments:
'EnumAssociatedValue.playground.zip' was successfully uploaded.