允许你改变每一种编译器指令默认状态。

The $ option lets you change the default state of all of the switch directives.

youdao

编译器指令的语法是“$”后紧跟一个指令字符，再跟一个“-”或“+”。

The syntax of a switch directive option is $ followed by the directive letter, followed by a plus (+) or a minus (-).

youdao

不过它不像OpenMP那样，使用编译器指令标记；微软的解决方案是基于匿名委托。

But unlike the compiler directives used in OpenMP, Microsoft's solution is based on anonymous delegates.

youdao

It's a little more involved on a PC but it's all free, the software you can download, and Linux in similar operating systems generally come with a compiler or you run a simple command to get it.

在PC机上有点复杂，但是它是免费的，你一般下载的软件，类似Linux的操作系统等等通常都需要,一个编译器，或者你可以运行一些简单的指令来获取。

哈佛公开课 - 计算机科学课程节选