let view = UIView()
view.clipsToBounds = true
view.layer.cornerRadius = 10
view.layer.maskedCorners = [.layerMinXMaxYCorner];
public struct CACornerMask : OptionSet, @unchecked Sendable {
publicinit(rawValue:UInt)
public static var layerMinXMinYCorner: CACornerMask { get } //左上
public static var layerMaxXMinYCorner: CACornerMask { get } //右上
public static var layerMinXMaxYCorner: CACornerMask { get } //左下
public static var layerMaxXMaxYCorner: CACornerMask { get } //右下
}
