Created
May 6, 2020 16:39
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Swiftier version of https://stackoverflow.com/a/42079976/3939277
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| import Foundation | |
| public extension Array where Element == UInt8 { | |
| // MARK: - Constants | |
| /// This is used by the `toHexString()` method | |
| private static let uppercaseHexCharacters : [Character] = | |
| [ "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "A", "B", "C", "D", "E", "F" ] | |
| // MARK: - Public methods | |
| /// Converts a byte array into a string containing uppercase hex characters, without any additional formatting. | |
| func toHexString() -> String { | |
| var stringToReturn = "" | |
| for byte in self { | |
| let intValue = Int(byte) | |
| stringToReturn.append(Self.uppercaseHexCharacters[intValue >> 4]) | |
| stringToReturn.append(Self.uppercaseHexCharacters[intValue & 0x0f]) | |
| } | |
| return stringToReturn | |
| } | |
| } |
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