what sort of cases?
Could you use a while loop instead?
I feel like (as long as the numerical case optimizes to the same thing) the for-in loop (and occasional use of the while loop) is clearer.
Could you use a while loop instead?
I feel like (as long as the numerical case optimizes to the same thing) the for-in loop (and occasional use of the while loop) is clearer.
// old
for x: Thing? = thing; x != nil; x = x.parent {
...
// and now
var x: Thing? = thing
while x != nil {
...
x = x.parentIt was the only case i've really missed it.. unless theres a better way to do it that im not aware of..
But the for c-style loop for numbers is really not needed
func someFunction<T>(initial: T, next: T -> T?) -> T
{
var current = initial
while true
{
switch next(current)
{
case .Some(let value):
current = value
case .None:
return current
}
}
}
extension UIView
{
var rootView: UIView
{
return someFunction(self, next: { view in view.superview })
}
}
Of course, it would be more Swifty to create a "Parentable" protocol and write that as an extension of it!