我可以对byte []执行按位运算吗?

问题描述：

让我说:

byte[] data = new byte[] { 1, 212, 29, 144 };

我想出办法进行按位与运算的唯一方法首先将byte []转换为uint:

The only way I'm able to figure out to do a bitwise AND & is by first converting the byte[] to a uint:

if ((BitConverter.ToUInt32(data,0)) & 0x7) == 1)
{
    //If the last 3 bits are ...111, then do something
}

这看起来很丑.有没有更好的方法可以对byte []执行按位运算而不必转换为UInt?谢谢.

This seems ugly. Is there a better way to perform bitwise operations on a byte[] without having to convert to a UInt? Thanks.

答

不，.Net没有直接支持字节数组上的位操作.

No, there no direct support in .Net for bit operations on byte arrays.

您可以

转换为您在问题中显示的现有类型
自己对数组执行操作并使用数组
考虑是否 BigInteger 适用于您的情况(支持对任意长数字进行所有按位运算，但是没有直接在常规 long 值之外写入long constanst的方法)
考虑是否 BitArray 适用于您的情况(如果您只需要检查/设置特定的位，则更好).

convert to existing types like you show in the question
implement operations on arrays yourself and use arrays
consider if BigInteger works for your cases (supports all bitwise operation on arbitrary long numbers, but there sitll no direct way to write long constanst outside regular long values)
consider if BitArray works for your case (better if you just need to check/set particular bits).