如何让这段代码在 swift 4 中工作：
func crc16ccitt(data: [UInt8], seed: UInt16 = 0x1d0f, final: UInt16 = 0xffff) -> UInt16 {
var crc = seed
data.forEach { (byte) in
crc ^= UInt32(byte) << 8
(0..<8).forEach({ _ in
crc = (crc & UInt32(0x8000)) != 0 ? (crc << 1) ^ 0x1021 : crc << 1
})
}
return UInt16(crc & final)
}
print(crc16ccitt(data: "Karim".utf8.map{$0}) == 0x792C)
我收到 2 个错误：
"Binary operator'^=' cannot be applied to operands of type 'UInt16' and 'UInt32'
"Binary operator'&' cannot be applied to operands of type 'UInt16' and 'UInt32'
您可以使用UInt16(byte)代替UInt32(byte)
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