So if you do include it up top, the subsequent lines, even if you have these curly braces, are not, in fact, going to help you.
所以如果你在前面就包含它,后面的代码,即使你有这些花括号,实际上也没有用了。
哈佛公开课 - 计算机科学课程节选
应用推荐
模块上移
模块下移
不移动