&是什么意思操作员? [英] What is the meaning of the & operator?
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问题描述
在以下代码中:
Expression<Func<int, bool>> isOdd = i => (i & 1) == 1;
... (i & 1) == 1是什么意思?
...what is the meaning of (i & 1) == 1?
推荐答案
Bitwise AND. In this case, checking whether the last bit in i is set. If it is, it must be an odd number since the last bit represents 1 and all other bits represent even numbers.
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