这样便可以执行逐位的逻辑AND、OR、XOR和NOT比较。

This allows you to perform bitwise logical and, or, XOR, and NOT comparisons.

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逐位运算在其二进制形式的整型变量上执行逻辑AND、OR、EXLUSIVE OR和NOT运算。

Bitwise operations perform logical and, or, EXLUSIVE or, and NOT operations on binary representations of their integer arguments.

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如果字段是值类型的，则对该字段执行逐位复制。

If the field is a value type, a bit-by-bit copy of the field is performed.

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