class ShippingOrderService { func checkout(product: Product, type: ShippingType){ switch type { case ShippingType.JNE: /** do checkout product with this shipping type */ break case ShippingType.TIKI: /** do checkout product with this shipping type */ break case ShippingType.POSINDO: /** do checkout product with this shipping type */ break default: print("Unsupported shipping type") } } }

enum ShippingType { case JNE, TIKI, POSINDO }