Swift 3 type casting error

Question

I have this code working fine in swift 2.2

let arrayNib = Bundle.main.loadNibNamed("VehicleDetailsTableViewCell", owner: nil, options: nil) as! NSArray

While in swift 3.0 code gives me error

Cannot convert value of [Any]? to type NSArray in coercion

Answer 1

try this

let arrayNib = Bundle.main.loadNibNamed("VehicleDetailsTableViewCell", owner: nil, options: nil)! as [Any]
print (arrayNib)

Answer 2

I can use it like

let arrayNib = Bundle.main.loadNibNamed("VehicleDetailsTableViewCell", owner: nil, options: nil)

It gives me array of [Any?].

Answer 3

Error is pretty explicit.

You're trying convert Optional<T> to say U .

While T is castable to U , Optional<T> is not .

If you want you may cast Optional<T> to Optional<U> . Like in your case [Any]? to NSArray? .

But I strongly recommend to use Swift array and add some real types.

Answer 4

It seems, there is a new array type in Swift that is being used in new APIs; here's what a playground says:

I guess a follow-up question is whether using NSArray is essential.