Troubles with Swift 2 Xcode 7

Question

I'm trying to work with Swift 2, but i have troubles with variables. When I declare a var, Xcode shows this

I try with another code like

if let touch = touches.first as? UITouch { // ... }

But is the same problem.

UITouch is not the only one with the problem, other variables too.

What i can do for fix it?

Thanks.

Is the suggestion, the original code is let touch = touches.first as UITouch — Cesar Rioja G
– Cesar Rioja G, Commented Sep 16, 2015 at 4:34

Inder Kumar Rathore · Accepted Answer · 2015-09-16 04:36:13Z

It's because you have never used touch again in you code. It's an unused variable. Either consider removing it or you can fix it using the above fix.

This warning will go away once you use the touch variable.

e.g.

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) { let touch = touches.first as UITouch! print("\(touch)") }

In above case touch is used in print method and hence there won't come any warning.

Good programer always keep ZERO warnings. Welcome to the elite group :)

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