Display and dismiss a modal view controller in Swift

Swift 5:

present(UIViewController(), animated: true, completion: nil)

dismiss(animated: true, completion: nil)

Swift 2.2:

self.presentViewController(true, completion: nil)

Hide/dismiss a view controller:

self.dismissViewControllerAnimated(true, completion: nil)

To Dismiss View Controller in Swift 3.0

self.dismiss(animated: true, completion: {})

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