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/// Classes whose initializers actually create derived classes | |
protocol FactoryInitializable { | |
/// The type of the least-derived class declared to be FactoryInitializable. | |
/// | |
/// - Warning: Do not define this in your FactoryInitializable type! | |
associatedtype FactoryBase: AnyObject, FactoryInitializable = Self | |
// This associatedtype is a trick that captures `Self` at the point where | |
// `FactoryInitializable` enters a class hierarchy; in other contexts, `Self` | |
// refers to the most-derived type. | |
} |
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