Logic 使用&；，~在sybase中
我正在执行以下声明 选择10&~3。这将输出为8 选择10&~5。这将输出为10 选择10&~2。这将输出为8Logic 使用&；，~在sybase中,logic,sybase,logical-operators,Logic,Sybase,Logical Operators,我正在执行以下声明 选择10&~3。这将输出为8 选择10&~5。这将输出为10 选择10&~2。这将输出为8 有人能解释这背后的逻辑吗？这是按位运算，~是逆运算 3 is the same as 0011 in binary, and inverse of that is 1100 2 is the same as 0010 in binary, and inverse of that is 1101 5 is the same as 0101 in binary, and inverse o
有人能解释这背后的逻辑吗？这是按位运算，~是逆运算
3 is the same as 0011 in binary, and inverse of that is 1100
2 is the same as 0010 in binary, and inverse of that is 1101
5 is the same as 0101 in binary, and inverse of that is 1010
10 is the same as 1010 in binary.
10 & ~3 => 1010 & 1100 = 1000 => 8
10 & ~5 => 1010 & 1010 = 1010 => 10
10 & ~2 => 1010 & 1101 = 1000 => 8
你也可以用十进制思维，但你也必须用二进制思维（顺序1、2、4、8、16、32、64、128…）。10由“8 | 2”组成，3由“1 | 2”组成。3的倒数几乎等于“1 | 2”。10和3之间的公共部分是2，因此您将拥有10中不在3中的所有部分，从而为我们提供8。感谢Lostfields。