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9 lines
266 B
Swift
9 lines
266 B
Swift
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public enum Hex {
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public static func isValid(_ string: String) -> Bool {
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let allowedCharacters = CharacterSet(charactersIn: "0123456789ABCDEF")
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return string.uppercased().unicodeScalars.allSatisfy { allowedCharacters.contains($0) }
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}
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}
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