Use of bitwise negation operator

The use of bitwise negation operator

The bitwise negation operator is based on each binary Bit inversion, such as byte type, the result of ~0 is 255.

This function can do some reversal operations in the mask

In the following code, a stores three values ​​​​2, 4, and 8. Use the bitwise negation '~' operator to reverse

The printed result is false,flase,false,true,true. Mask has been reversed

class Program
{
    static void Main(string[] args)
    {
        byte a = 2 | 4 | 8;
        byte b = (byte)~a;
        Console.WriteLine((b & 2) == 2);
        Console.WriteLine((b & 4) == 4);
        Console.WriteLine((b & 8) == 8);
        Console.WriteLine((b & 16) == 16);
        Console.WriteLine((b & 32) == 32);
        Console.Read();
    }
}

For example, in the unity engine, this operation can be used on LayerMask:

public class LayerMaskTest : MonoBehaviour
{
    public LayerMask layerMask;
    
    void OnEnable()
    {
        layerMask.value = ~layerMask.value;
    }
}

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