Swift extension on UIView to round the corners

UIView+RoundedCorners.swift

// UIView+RoundedCorners.swift
//
//  Created by Robert Harrison on 7/22/19.
//  Copyright © 2019 Robert Harrison. All rights reserved.
//
// Usage:
//   view.roundCorners([.topLeft, .topRight], cornerRadius: 8.0)

import UIKit

enum Corner {
    case topLeft
    case topRight
    case bottomLeft
    case bottomRight
}

extension UIView {
    
    func roundCorners(_ corners: [Corner], cornerRadius: CGFloat) {
        
        var maskedCorners = CACornerMask()
        
        for corner in corners {
            switch corner {
            case .topLeft:
                maskedCorners.insert(.layerMinXMinYCorner)
            case .topRight:
                maskedCorners.insert(.layerMaxXMinYCorner)
            case .bottomLeft:
                maskedCorners.insert(.layerMinXMaxYCorner)
            case .bottomRight:
                maskedCorners.insert(.layerMaxXMaxYCorner)
            }
        }
        
        self.layer.maskedCorners = maskedCorners
        self.layer.cornerRadius = cornerRadius
        
    }
    
}