rchatham

func perform() {
    guard let animation = animations.dequeue else { return }
    UIView.animate(withDuration: animation.0, animations: animation.1) { success in
        perform()
    }
}

rchatham

typealias Animation = (TimeInterval, ()->Void)

let animation: Animation = (5.0, {
    // Code to animate
})

let animations = Queue<Animation>()

animations.enqueue(animation)

rchatham

internal class Node<T> {
    var data: T
    var next: Node<T>?
    init(data: T) {
        self.data = data
    }
}

internal struct Queue<T> {
    var first, last: Node<T>?

rchatham

// Escape the Pyramid of DOOM!
Animate(duration: time) { [unowned self] in
    // animation
    self.animationFunction()
}.do { [unowned self] in
    // non-animation function
    self.nonAnimationFunction()
}.then(duration: time) { [unowned self] in
    // animation
    self.animationFunction()

rchatham

UIView.animate(withDuration: time, animations: { [unowned self] in
    // animation
    self.animationFunction()
}) {  [unowned self] success in
    // non-animation function
    self.nonAnimationFunction()
    UIView.animate(withDuration: time, animations: {
        // animation
        self.animationFunction()
    }) { success in