这是什么牌子究竟是什么意思？ | = [英] What does this sign exactly mean? |=

问题描述

| =

我很好奇，想了解该运营商， 我已经看到了这个符号使用，而在Java中设置标志。

例如：

  notification.flags | = Notification.FLAG_AUTO_CANCEL;
 

1. 是否执行某种位操作的？

2. 这是什么标志究竟怎么办？

3. 是否还有其他众所周知的标志与此类似？

解决方案

它等同于

  notification.flags = notification.flags | Notification.FLAG_AUTO_CANCEL;
 

其中， | 是位或运算符或其中的两个变量逐位

这是很好本身已知的。也有 + = ， = - ， * = ， / = ，％= ，＆安培; = ， ^ = 。

|=

I'm curious to learn about this operator, I've seen this notation used while setting flags in Java.

for example:

notification.flags |= Notification.FLAG_AUTO_CANCEL;

1. Does it perform some kind of bit manipulation?

2. What does this mark exactly do?

3. Are there any other well known signs similar to this?

解决方案

It is equivalent to

notification.flags = notification.flags | Notification.FLAG_AUTO_CANCEL;

where | is bitwise OR operator which OR the two variables bit-by-bit.

It is well known by itself. There are also +=, -=, *=, /=, %=, &=, ^=.

这篇关于这是什么牌子究竟是什么意思？ | =的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！