Error: 'NSOperationQueue' has been renamed to OperationQueue

Question

In Xcode 8.0, I'm getting an error while compiling for Swift 3.0

Error: "'NSOperationQueue' has been renamed to OperationQueue"

When I switch to OperationQueue.mainQueue() the method "mainQueue" doesn't exist! What's replaced it???

    let manager = CMMotionManager()
    if manager.isGyroAvailable {
        manager.gyroUpdateInterval = 0.1
        manager.startGyroUpdates()
        let queue = NSOperationQueue.mainQueue()
        manager.startGyroUpdatesToQueue(queue) {
            (data, error) in
            // ...
        }
    }
    if manager.isAccelerometerAvailable {
        manager.accelerometerUpdateInterval = 0.01
        manager.startAccelerometerUpdatesToQueue(NSOperationQueue.mainQueue()) {
            [weak self] (data: CMAccelerometerData?, error: NSError?) in
            if let acceleration = data?.acceleration {
                self.physicsWorld.gravity = CGVectorMake(acceleration.x, acceleration.y)
            }
        }
    }

How to I fix the above code so NSOperationQueues are formatted correctly?

Answer 1

Write OperationQueue.main.

Fairly simple. Actually, in your code, you can skip a step and just write .main where an operation queue is expected. So:

manager.startGyroUpdatesToQueue(.main) {