Sha256: 537aa5c3ece172623fed7519747b7baca723ade35716e477e166612b8182314c
Contents?: true
Size: 1.15 KB
Versions: 325
Compression:
Stored size: 1.15 KB
Contents
struct Hexadecimal {
let hexString: String
let intValue: Int?
private static let hexDigits = [
"0": 0,
"1": 1,
"2": 2,
"3": 3,
"4": 4,
"5": 5,
"6": 6,
"7": 7,
"8": 8,
"9": 9,
"a": 10,
"b": 11,
"c": 12,
"d": 13,
"e": 14,
"f": 15
]
init(_ hexString: String) {
self.hexString = hexString
self.intValue = Hexadecimal.getIntFromHexString(hexString)
}
private static func getIntFromHexString(_ hexString: String) -> Int? {
var result = 0
var multiplier = 1
let digits = hexString.characters.map { String($0).lowercased() }.reversed()
for digit in digits {
guard let intValue = hexDigits[digit] else {
// Invalid hex string
return nil
}
result += intValue * multiplier
multiplier *= 16
}
return result
}
}
extension Int {
init?(_ hex: Hexadecimal) {
guard let intValue = hex.intValue else {
return nil
}
self = intValue
}
}
Version data entries
325 entries across 325 versions & 1 rubygems