Open Radar

 
Summary:
With iOS 9 come generics for Objective-C. These generics make casts like "view.subviews as! [UIView]" unnecessary.

When upgrading a project using "Convert > To Latest Swift Syntax" then the convert replaces for example "view.subviews as! [UIView]" with "view.subviews as [UIView]" which results in an unnecessary cast.
Instead the converter should remove the cast completely as "view.subviews" is already of type [UIView].

Steps to Reproduce:
1. Copy the code from the attached file into a Playground
2. Use "Convert > To Latest Swift Syntax"
3. Notice how there now is an unnecessary cast from [UIView] to [UIView]

Expected Results:
The converter should remove the cast which is now longer necessary.

Actual Results:
There is an unnecessary cast from [UIView] to [UIView]


Attached file:

import UIKit

func test(view: UIView) {
	for _ in view.subviews as! [UIView] {
		// ...
	}
}