Reputation: 67
I am working on a simple app where I need to add two numbers entered in a text field together. I want to make it so that if on of the textfields doesn't have an entry in it, it will calculate as 0. What is the most efficient way to do this? Any help would be appreciated
@IBAction func myButton(sender: AnyObject) {
//reveals label upon click of button
myLabel1.hidden = false
//textField constants
let firstNum = Double(myTextField1.text!)
let secondNum = Double(myTextField2.text!)
let outputValue = Double(firstNum! + secondNum!)
myLabel1.text = "Result: \(outputValue)"
}
Upvotes: 0
Views: 61
Reputation: 80781
Use the nil coalescing operator (with a correction from vacawama):
let firstNum = Double(myTextField1.text ?? "") ?? 0
let secondNum = Double(myTextField2.text ?? "") ?? 0
Upvotes: 4