So the question is: Do you have to have this space between the if and the parenthesis?

所以那个问题是：我们在if和括号之间,需不需要空格呢？

哈佛公开课 - 计算机科学课程节选

> You said you'd make a space between if and the parenthesis; does that actually matter?

>，你说你在if和括号之间用了个空格;,那有什么影响吗？

哈佛公开课 - 计算机科学课程节选