groovy-位运算

从Groovy 1.0 beta 10开始，Groovy支持位运算：<<. >>, >>>, |, &, ^, and ~.

下表列出了位运算的操作符和其含义：

Operator Symbol	Meaning
<<	Bitwise Left Shift Operator
>>	Bitwise Right Shift Operator
>>>	Bitwise Unsigned Right Shift Operator
|	Bitwise Or Operator
&	Bitwise And Operator
^	Bitwise Xor Operator
~	Bitwise Negation Operator
<<=	Bitwise Left Shift Assign Operator
>>=	Bitwise Right Shift Assign Operator
>>>=	Bitwise Unsigned Right Shift Assign Operator
|=	Bitwise Or Assign Operator
&=	Bitwise And Assign Operator
^=	Bitwise Xor Operator

小例子：

1	assert (1 << 2) == 4 // bitwise left shift

2	assert (4 >> 1) == 2 // bitwise right shift

3	assert (15 >>> 1) == 7 // bitwise unsigned right shift

4	assert (3 | 6) == 7 // bitwise or

5	assert (3 & 6) == 2 // bitwise and

6	assert (3 ^ 6) == 5 // bitwise xor

7	int mostlyOnes = 0xFFFFFFFE

8	assert ~mostlyOnes == 1 // bitwise negation