Swift Structures and Tuples

struct Shape {
    var width: Int
    var height: Int
    var unit: String

    func getArea() -> Int {
        return width * height
    }

    func getType() -> String {
        return (width == height) ? "Square" : "Rectangle";
    }

    func theDimensions() -> Void {
        println("Dimensions: \(width) \(unit) by \(height) \(unit)")
    }

    func theArea() -> Void {
        println("Area: \(getArea()) \(unit)")
    }

    func theType() -> Void {
        println("Shape is a \(getType())")
    }

    func make3D(length:Int) -> Shape3D {
        println("Converted shape to 3D")
        return Shape3D(width: width, height: height, length: length, unit: "\(unit)3");
    }
}

struct Shape3D {
    var width: Int
    var height: Int
    var length: Int
    var unit: String

    func getVolume() -> Int {
        return width * height * length
    }

    func getType() -> String {
        return (width == height && width == length) ? "Cube" : "Cuboid";
    }

    func theDimensions() -> Void {
        println("Dimensions: \(width) \(unit) by \(height) \(unit) by \(length) \(unit)")
    }

    func theVolume() -> Void {
        println("Volume: \(getVolume()) \(unit)")
    }

    func theType() -> Void {
        println("3D Shape is a \(getType())")
    }
}

var square = Shape(width: 10, height:10, unit:"cm")
square.theDimensions()
square.theType()
square.theArea()

println()

var rectangle = Shape(width:25, height: 5, unit:"mm")
rectangle.theDimensions()
rectangle.theType()
rectangle.theArea()

println()

var cube = square.make3D(10)
cube.theType()
cube.theDimensions()
cube.theVolume()

println()

var cuboid = Shape3D(width:15, height:5, length:100, unit:"m3")
cuboid.theType()
cuboid.theDimensions()
cuboid.theVolume()