OperationQueue

OperationQueue

var testQueue: OperationQueue = {
    var queue = OperationQueue()
    queue.name = "Test queue"
    queue.maxConcurrentOperationCount = 1
    return queue
}()


for i in 0...200 {
    let op =  { print("xx: ", i);
        sleep(5)
        if i * 2 == 4 {
            testQueue.cancelAllOperations()
        }
    }

    testQueue.addOperation(op)
}

testQueue.waitUntilAllOperationsAreFinished()