Cleanly converting an Objective-C Boolean to a Swift Bool?

Question

Is there an easy way to do this that I'm missing? Right now I'm doing this like so:

let doesConformNumber: NSNumber = NSNumber(unsignedChar: UTTypeConformsTo(utiCF, typeCF))
if doesConformNumber.boolValue {
    return true
}

If I try to do a simple cast like so:

let testBool: Bool = UTTypeConformsTo(utiCF, typeCF)

I get the error 'Boolean' is not convertible to 'Bool'

Anyone have a cleaner way of doing this conversion?

Answer 1

UTTypeConformsTo() returns a Boolean, which is a type alias for Int8 and not directly convertible to Bool. The simplest way would be

let testBool : Bool = UTTypeConformsTo(utiCF, typeCF) != 0

where the type annotation is actually not necessary:

let testBool = UTTypeConformsTo(utiCF, typeCF) != 0