Make sure you don't mistake the boolean AND operator, &&(double ampersand) for the bitwise AND operator &(single ampersand). They are entirely different beasts.
确定你没有错误的使用逻辑符&&位符&,它们是完全不同的。
Make sure you don't mistake the boolean AND operator, &&(double ampersand) for the bitwise AND operator &(single ampersand). They are entirely different beasts.
确定你没有错误的使用逻辑符&&位符&,它们是完全不同的。
) (一个符号( & )在方法名称表明它的回报参考 。
(An ampersand (&) before a method name indicates it returns by reference .
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