Swift, multiple inheritance from classes

Question

Here is my custom class that I have created:

import UIKit
import CoreBluetooth

protocol vaBeanDelegate
{

}

class vaBean: CBCentralManager, CBCentralManagerDelegate {

override init!(delegate: CBCentralManagerDelegate!, queue: dispatch_queue_t!) {
    println("bean initialised")
    super.init()
    self.delegate = delegate
}

func centralManager(central: CBCentralManager!, didDiscoverPeripheral peripheral: CBPeripheral!, advertisementData: [NSObject : AnyObject]!, RSSI: NSNumber!) {
    println("discovered peripheral(s)")
}

func centralManagerDidUpdateState(central: CBCentralManager!) {
    switch (central.state) {
    case .PoweredOff:
        println("hardware is powered off")

    case .PoweredOn:
        println("hardware is powered on and ready")
        //centralManager.scanForPeripheralsWithServices(nil, options: nil)
    case .Resetting:
        println("hardware is resetting")

    case .Unauthorized:
        println("state is unauthorized")

    case .Unknown:
        println("state is unknown");

    case .Unsupported:
        println("hardware is unsupported on this platform");

    }
}

func centralManager(central: CBCentralManager!, didConnectPeripheral peripheral: CBPeripheral!) {
    println("didConnectPeripheral")
}
}

I just don't know how to initialize it from my main ViewController. When I try the following it complains that ViewController does not conform to the CBCentralManagerDelegate:

import UIKit

class ViewController: UIViewController {

var myBean: vaBean!

override func viewDidLoad() {
    super.viewDidLoad()
    println("blueToothTest v1.00")
    println("opening bluetooth connection ...")
    myBean = vaBean(delegate: self, queue: nil)
}

override func didReceiveMemoryWarning() {super.didReceiveMemoryWarning()}
}

Answer 1

Swift and Objective-C are single inheritance only, you can't have more than one superclass for a class.

When you see Swift code with what looks like multiple superclasses in their declaration, you'll see that at most, one of the names in the declaration is a superclass, the others are names of protocols.

In Objective-C the these would have been written with <angled brackets> but this is not the case for Swift.