Nullish

public enum Nullish<Wrapped> : ExpressibleByNilLiteral
extension Nullish: Equatable where Wrapped: Equatable

Wrapped enum for types that can be null, undefined, or defined.

  • Object is semantically null.

    Declaration

    Swift

    case null

  • Object is semantically undefined (same as nil).

    Declaration

    Swift

    case undefined

  • Object is defined.

    Declaration

    Swift

    case defined(Wrapped)

  • Declaration

    Swift

    public init(nilLiteral: ())