And this defines formal parameters of this function. Yup.

带有其它变量的括弧,这就是函数的形参。

麻省理工公开课 - 计算机科学及编程导论课程节选

You'll also see in a little while why both of these things would work this way, but it's not what I wanted. OK?

我应该把括弧,而不是方括号放在这里，你们稍后就会,明白为什么这两个符号在这里都是行得通的？

麻省理工公开课 - 计算机科学及编程导论课程节选

Yep. Are you telling me I want parens there and not, and not braces?

现在你告诉我我在这里要不要打括弧啊,需不需要大括弧？

麻省理工公开课 - 计算机科学及编程导论课程节选

Every time you see a square bracket, put a paren in. All right?

每次你看到一个方括弧，你就得在此添加一个圆括弧，明白了吗？

麻省理工公开课 - 计算机科学及编程导论课程节选

All right. I hate this language, because I always want to have parens.

我讨厌这门语言，因为我总是得打括弧。

麻省理工公开课 - 计算机科学及编程导论课程节选