NSOperationQueue and maxConcurrentOperationCount about swifthttp HOT 3 CLOSED

/// Returns if the task is current running.
public func isExecuting() -> Bool {
    return running
}

/// Returns if the task is finished.
public func isFinished() -> Bool {
    return done
}

/// Sets the task to finished.
public func finish() {
    self.willChangeValueForKey("isExecuting")
    self.willChangeValueForKey("isFinished")

    running = false
    done = true

    self.didChangeValueForKey("isExecuting")
    self.didChangeValueForKey("isFinished")
}