ios swift string和charecters互转 int string 和 bytes [UInt8]互转

文章目录1.string和charecters互转2.int string to bytes [UInt8]1.string和charecters互转Strings and Characters- swift.org2.int string to bytes [UInt8]//str = "456"func intStringToBytes(str: String) -> [UInt8]{v

星星月亮0

357人浏览 · 2021-10-15 20:03:13

星星月亮0 · 2021-10-15 20:03:13 发布

1.string和charecters互转

Strings and Characters - swift.org

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2.int string 和 bytes [UInt8] 互转

    //str = "456"
    func intStringToBytes(str: String) -> [UInt8]{
        var bytes: [UInt8] = []
        for scalar in str {
            let num = UInt8(String(scalar))!
            bytes.append(num)
        }
        print(bytes)
        return bytes
    }

传入“456”后的打印结果：
[4, 5, 6]

    func bytesToIntString(bytes: [UInt8]) -> String{
        var str = ""
        for byte in bytes {
            str += String(byte)
        }
        print(str)
        return str
    }