If not let - in Swift

Question

is there is a way to negate the \"if let\" in swift? This looks silly to me:

    if let type = json.type  {

    } else {
        XCTFail(\"There is no type         


        

Answer 1

Another alternative I've used a few times:

switch json.type
{
    case .None: // ...
    case .Some(.Object): // ...
    case .Some(.Array):  // ...
    case .Some(.Number): // ...
    case .Some(.String): // ...
}

Since the ? is actually Optional which is an enum on its own, defined as:

enum Optional : Reflectable, NilLiteralConvertible 
{
    case None
    case Some(T)

    ...
}