Swift Playground: Corner Radius + Shadow

cornersAndShadow.swift

import UIKit
import PlaygroundSupport

// For the Playground only: creating an UIView where the next UIView will be shown on
let container = UIView(frame: CGRect(x: 0, y: 0, width: 500, height: 500))
container.backgroundColor = .white

// The interesting stuff
let viewShadow = UIView(frame: CGRect(x: 0, y: 0, width: 120, height: 120))
viewShadow.center = container.center
viewShadow.backgroundColor = UIColor.white
viewShadow.layer.shadowColor = UIColor.black.cgColor
viewShadow.layer.shadowOpacity = 0.3
viewShadow.layer.shadowOffset = CGSize(width: 0, height: 8.0) // width = x; height = y
viewShadow.layer.shadowRadius = 10
viewShadow.layer.cornerRadius = 10
container.addSubview(viewShadow)

// For the Playground only: showing it on the Assistant Editor (CMD+Enter to show)
PlaygroundPage.current.liveView = container
PlaygroundPage.current.needsIndefiniteExecution = true