# Programming in Swift: Functions & Types

Jan 4 2022 Swift 5.5, iOS 15, Xcode 13

## Part 3: Enumerations

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Update Notes: This course was originally recorded in 2019. It has been reviewed and all content and materials updated as of October 2021.

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Now that you’ve got a handle on switch statements, there’s one more important thing to cover about enumerations.

``````enum TwoDimensionalPoint {

}
``````
``````case origin
``````
``````case onXAxis(Double)
case onYAxis(Double)
``````
``````case noZeroCoordinate(x: Double, y: Double)
``````
``````let coordinates = (1.0, 3.0)
let twoDimensionalPoint: TwoDimensionalPoint
``````
``````switch coordinates {
default:
twoDimensionalPoint = .noZeroCoordinate(x: coordinates.0, y: coordinates.1)
}
``````
``````case (0, 0):
twoDimensionalPoint = .origin
``````
``````let coordinates = (0.0, 0.0)
``````
``````case (_, 0):
twoDimensionalPoint = .onXAxis(coordinates.0)
case (0, _):
twoDimensionalPoint = .onYAxis(coordinates.1)
``````
``````let coordinates = (0.0, 7.0)
``````
``````func getValues(for point: TwoDimensionalPoint) -> (x: Double, y: Double) {

}
``````
``````switch point {

}
``````
``````case .origin:
return (0, 0)
``````
``````case let .onXAxis(x):
return (x, 0)
``````
``````case .onYAxis(let y):
return (0, y)
``````
``````case let .noZeroCoordinate(x, y):
return (x, y)
``````
``````getValues(for: .origin)
getValues(for: .onXAxis(66.6))
getValues(for: .onYAxis(-3.5))
getValues(for: TwoDimensionalPoint.noZeroCoordinate(x: 5, y: 7))
``````