语句“（void）c;”的目的是什么？ [英] What is the purpose of the statement "(void)c;"?

问题描述

对于模糊的标题，对不起，但不是真的确定如何短语。所以我正在通过boost :: asio的内部（试图跟踪一些可笑的延迟），我注意到这样的代码虚线围绕：

Sorry for the vague title, but not really sure how to phrase it. So I was looking through the innards of boost::asio (trying to track down some ridiculous delays), and I notice code like this dotted about:

    op_queue<operation> completed_ops;
    task_cleanup c = { this, &lock, &completed_ops };
    (void)c;  // EH?

现在，从正在初始化的结构体名称开始，我猜是使用RAII一些破坏步骤 - 很好，但最后一行的目的是什么？

Now from the name of the struct that is being initialized, I'm guessing it's using RAII to do some steps on destruction - fine, but what is the purpose of the last line? Have I just missed something completely funky?

推荐答案

也许避免编译警告，因为 c 不使用？

Maybe to avoid a compilation warning because c isn't used?

这篇关于语句“（void）c;”的目的是什么？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！