I want to round the specified corner

This time I will touch on UIImage

Described in any file (I created an extension file for UI parts and described it there)

///A method to round a specified corner with a specified radius
///- Parameters: 
///   -radius
///   -Specified corner
 public func setCornerRadius(_ radius: CGFloat,_ corners: CACornerMask) {
    layer.cornerRadius = radius
    layer.masksToBounds = true
    layer.maskedCorners = corners
 }

How to use

///This time, all corners are rounded.
let corners = [.layerMaxXMinYCorner, .layerMinXMaxYCorner, .layerMinXMinYCorner, .layerMaxXMaxYCorner ]
view.setCornerRadius(15, corners)

that's all. I would appreciate it if you could refer to it.

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