do-while（false）的优点是什么？ [英] What is the advantage of a do-while(false)?

问题描述

在查看由其他员工处理的一些代码时，我看到很多代码都写在：

When looking through some code that was handled by another employee, I see a lot of code written in:

do{
    ...
}while(false);

这提供了什么优势（如果有的话）？

What advantage (if any) does this provide?

以下是代码中发生的更多骨架：

Here is more of a skeleton that is happening in the code:

try{
    do{
        // Set some variables

        for(...) {
            if(...) break;
            // Do some more stuff
            if(...) break;
            // Do some more stuff
        }
    }while(false);
}catch(Exception e) { 
    // Exception handling 
}

更新：

C ++版本：

伪造的循环是否常见？

推荐答案

也许这样做是为了能够随时跳出循环，例如：

Maybe it was done to be able to jump out of the "loop" at any time, e.g:

do
{
    ...
    if (somethingIsWrong) break;
    //more code
    ...
}
while(false);

但正如其他人所说，我不会这样做。

But as others have said, I wouldn't do it like this.

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