A collection of Swift snippets I've found useful when starting out with the language. These are things that tripped me up due to not reading the Swift Programming Language book enough.
UIView.animateWithDuration(1.0, animations: {() -> Void in
// Animations
})
Which can be simplified to
UIView.animateWithDuration(1.0, animations: {
// Animations
})
Which after reading the docs more, if a closure is the last argument then you can just pass it after the call
UIView.animateWithDuration(1.0) {
// Animations
}
Closures with return types are called like so
UIView.animateWithDuration(1.0, animations: {
// Animations
}, completion: { success in
// Completion
})
I like to lazy load things, keeps all the ivars in the same place, removing a bunch of code from init() methods. This is how to do it in Swift.
@lazy var awesomeView: UIView = {
let view: UIView = UIView()
view.backgroundColor = UIColor.redColor()
// Any other initial configuration
return view
}()
Then you'd just call self.addSubview(awesomeView)
in your viewDidLoad()
.