18 lines
456 B
Swift
18 lines
456 B
Swift
// Copyright © 2020 Metabolist. All rights reserved.
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import Foundation
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protocol Unknowable: RawRepresentable, CaseIterable where RawValue: Equatable {
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static var unknownCase: Self { get }
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}
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extension Unknowable {
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init(rawValue: RawValue) {
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self = Self.allCases.first { $0.rawValue == rawValue } ?? Self.unknownCase
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}
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}
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extension Unknowable {
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static var allCasesExceptUnknown: [Self] { allCases.filter { $0 != unknownCase } }
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}
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