swift new enums

enums.swift

enum TextCase {
    case Uppercase(String)
    case Lowercase(String)
}

let values: [TextCase] = [
    .Uppercase("FOO"),
    .Lowercase("iamlow"),
    .Uppercase("BAR"),
]

//Print all of some case
for case let .Uppercase(value) in values {
    print(value)
}

let number:Int? = 30
if case .Some(let value) = number where value > 20 {
    print(value)
}

//Print all unwrapped values
let optionals: [Int?] = [nil, 10, 20, 30, nil, 40]
for case let number? in optionals {
    print(number)
}