ilyannn

// This new version seems to be syntactically correct,
// but it crashes together with Xcode as of beta 3. 
// (radar link should appear here)

// Find smallest N such that f(N) = nil.
func exhaust<T>(fun: Int -> T?) -> Int {
    var index = 0
    while fun(index) { index++ }
    return index
}

ilyannn

class Unwrapper<T, R> {
    let failed:R?
    let values:[T]
    
    init(values: [T] = [], failed:R? = nil) {
        self.values = values
        self.failed = failed
    }

    class func unwrap(value:T?, elseReturn safe:R) -> Unwrapper<T, R> {

ilyannn

enum State {
    case Success(value:String)
    case Error(error:NSError)
}

class Bound:Printable {
    let pointer:NSErrorPointer
    var state:State
    var step:Int = 0