位移运算符
| p | q | p＆Q | p | q | p ^ Q |
|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 |
| 0 | 1 | 0 | 1 | 1 |
| 1 | 1 | 1 | 1 | 0 |
| 1 | 0 | 0 | 1 | 1 |
假设A = 60; 和B = 13; 现在的二进制格式，他们将如下：
A = 0011 1100
B = 0000 1101
-----------------
A＆B = 0000 1100
A | B = 0011 1101
A ^ B = 0011 0001
?A = 1100 0011
| 运算符 | 描述 | 示例 |
| And | 如果两个操作数都存在，则按位AND运算符将一个位复制到结果。 | (A AND B) will give 12, which is 0000 1100 |
| Or | 二进制OR运算符复制一个位，如果它存在于任一操作数。 | (A Or B) will give 61, which is 0011 1101 |
| Xor | 二进制XOR运算符复制该位，如果它在一个操作数中设置，但不是两个操作数。 | (A Xor B) will give 49, which is 0011 0001 |
| Not | 二进制补码运算符是一元的，具有“翻转”位的效果。 | (Not A ) will give -61, which is 1100 0011 in 2's complement form due to a signed binary number. |
| << | 二进制左移位运算符。 左操作数值向左移动由右操作数指定的位数。 | A << 2 will give 240, which is 1111 0000 |
| >> | 二进制右移运算符。 左操作数值向右移动由右操作数指定的位数。 | A >> 2 will give 15, which is 0000 1111 |
尝试以下示例来了解VB.Net中提供的所有位运算符：
Dim a As Integer = 60 ' 60 = 0011 1100 Dim b As Integer = 13 ' 13 = 0000 1101 Dim c As Integer = 0 c = a And b ' 12 = 0000 1100 Proj.MsgDebug.Add("Line 1 - Value of c is {0}", c) c = a Or b ' 61 = 0011 1101 Proj.MsgDebug.Add("Line 2 - Value of c is {0}", c) c = a Xor b ' 49 = 0011 0001 Proj.MsgDebug.Add("Line 3 - Value of c is {0}", c) c = Not a ' -61 = 1100 0011 Proj.MsgDebug.Add("Line 4 - Value of c is {0}", c) c = a << 2 ' 240 = 1111 0000 Proj.MsgDebug.Add("Line 5 - Value of c is {0}", c) c = a >> 2 ' 15 = 0000 1111 Proj.MsgDebug.Add("Line 6 - Value of c is {0}", c) '返回结果:Line 1 - Value Of c Is 12 '返回结果:Line 2 - Value Of c Is 61 '返回结果:Line 3 - Value Of c Is 49 '返回结果:Line 4 - Value Of c Is -61 '返回结果:Line 5 - Value Of c Is 240 '返回结果:Line 6 - Value Of c Is 15 |