Blocks on Swift (animateWithDuration:animations:completion:)

Question

I\'m having trouble making the blocks work on Swift. Here\'s an example that worked (without completion block):

UIView.animateWithDuration(0.07) {
    self.so         


        

Answer 1

Underscore by itself alongside the in keyword will ignore the input

Swift 2

UIView.animateWithDuration(0.2, animations: {
    self.blurBg.alpha = 1
}, completion: { _ in
    self.blurBg.hidden = true
})

Swift 3, 4, 5

UIView.animate(withDuration: 0.2, animations: {
    self.blurBg.alpha = 1
}, completion: { _ in
    self.blurBg.isHidden = true
})