Classes

The following classes are available globally.

  • This is a simple ball object that has a volume property.

    It also illustrates how to make a class Hashable (so it can be stored in sets, as keys of Maps, etc.), and how to enable it to be printed in a meaninful way.

    Note the computed properties for the implemented Protocols. This will be a common pattern for your classes.

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    Declaration

    Swift

    public class Ball : Hashable, CustomStringConvertible

  • This is a container can be used to contain Balls. A Ball with a particular volume and color may only appear in a BallContainer once.

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    Declaration

    Swift

    public class BallContainer : Sequence
  • Box

    This is a container can be used to contain Balls. A given Ball may only appear in a BallContainer once.

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    Declaration

    Swift

    public class Box : Sequence