Using UIBezierPath:byRoundingCorners: with Swift 2 and Swift 3
Swift 2:
let buttonPath = UIBezierPath(roundedRect: button.bounds,
byRoundingCorners: [.TopLeft , .BottomLeft],
cornerRadii: CGSizeMake(1.0, 1.0))
Swift 3 and Swift 4:
let buttonPath = UIBezierPath(roundedRect: button.bounds,
byRoundingCorners: [.topLeft ,.bottomLeft],
cornerRadii: CGSize(width:1.0, height:1.0))
In this case in swift 2.0 is required to make union of two corners. F. ex.:
let corners = UIRectCorner.TopLeft.union(UIRectCorner.BottomLeft)
let buttonPath = UIBezierPath(roundedRect: button.bounds,
byRoundingCorners: corners,
cornerRadii: CGSizeMake(1.0, 1.0))
Works with Swift 2 and Swift 3