在Java / Android中，| =是什么意思？(What does |= in Java / Android mean? (bit-wise OR assignment) [duplicate])

 
 
 可能重复： 
 Java中的快捷方式“or-assignment”（| =）运算符 
 
 
 我在Android SDK文档中找到了以下示例代码： 
 
    boolean retValue = false;
    retValue |= mActionBarHelper.onCreateOptionsMenu(menu);
    retValue |= super.onCreateOptionsMenu(menu);
 
 任何人都可以向我展示相同的代码，以证明这有什么作用？ 
 
 注意：我假设方法调用返回一个布尔值，所以我想看一个示例，它看起来像if-else构造。 

 
 
Possible Duplicate:
 Shortcut “or-assignment” (|=) operator in Java 
 
 
I found the following example code in the Android SDK docs:
 
    boolean retValue = false;
    retValue |= mActionBarHelper.onCreateOptionsMenu(menu);
    retValue |= super.onCreateOptionsMenu(menu);
 
Can anyone show me equivalent code, to demonstrate what this does?
 
Note: I assume the method calls return a boolean value, so I like to see an example what this looks like as an if-else construct.

原文：https://stackoverflow.com/questions/10542446