Playground 에서 View Controller 사용하기

https://stackoverflow.com/questions/43160615/how-to-setup-viewcontroller-in-playgrounds

import UIKit
import PlaygroundSupport 

class ViewController:UIViewController { 
    override func viewDidLoad() { 
        super.viewDidLoad() 
  }
} 

let viewController = ViewController() 
PlaygroundPage.current.liveView = viewController 
PlaygroundPage.current.needsIndefiniteExecution = true

live view 가 보이지 않는다면

View > Assistant Editor > Show Assistant Editor

를 통해 화면을 띄울 수 있다.