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let latitude = 34.9010 // Always Double

let distance = 10 * 0.1490 // Double too

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let decimalInteger = 17
let binaryInteger = 0b10001       // 17 in binary notation
let octalInteger = 0o21           // 17 in octal notation
let hexadecimalInteger = 0x11     // 17 in hexadecimal notation

vialyx

let twoThousand: UInt16 = 2_000
let one: UInt8 = 1
let twoThousandAndOne = twoThousand + UInt16(one)

vialyx

typealias BitRate = UInt
typealias AnimationCompletion = ((Bool) -> Void)

let maxRate: BitRate = 44100
let fadeInCompletion: AnimationCompletion = { success in
    print("success: \(success)")
}

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let anonimusCoordinateTuple = (12.4567, 45.9087)
print("coordiate: \(anonimusCoordinateTuple.0), \(anonimusCoordinateTuple.1)")

let namedCoordinateTuple = (latitude: 12.4567, longitude: 45.9087)
print("coordiate: \(namedCoordinateTuple.latitude), \(namedCoordinateTuple.longitude)")

typealias Coordinate = (latitude: Float, longitude: Float)
let typealiaseCoordinateTuple = (latitude: 12.4567, longitude: 45.9087)
print("coordiate: \(typealiaseCoordinateTuple.latitude), \(typealiaseCoordinateTuple.longitude)")

vialyx

var (latitude, longitude) = anonimusCoordinateTuple
print("latitude var: \(latitude)") // latitude var: 12.4567
print("longitude var: \(longitude)") // longitude var: 45.9087

// And small trick to change 2 var between them
(longitude, latitude) = anonimusCoordinateTuple
print("latitude var: \(latitude)") // latitude var: 45.9087
print("longitude var: \(longitude)") // longitude var: 12.4567

vialyx

// MARK: - UIViewControllerTransitioningDelegate
extension PaymentInformationRouter: UIViewControllerTransitioningDelegate {
    
    func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
        return HalfSizePresentationController(presentedViewController: presented, presenting: presenting)
    }
    
}

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enum EventType: Int {
    case shared = 0
    case personal
    case group
}

let type = EventType(rawValue: -1)
// type is inferred to be of type "EventType?", or "optional EventType"

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if type != nil {
    print("type of \(type!.rawValue).")
}
// Prints "type of 1."

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if let type = EventType(rawValue: -1) {
    print("type of: \(type)")
} else {
    print("type is nil")
}