It turns out you can list one, give it a name, and if you use square brackets, that tells the compiler I actually want to put multiple values inside of this -- inside of this variable and how do we do that?
结果是你可以列举一个,给它取个名字,如果你使用方括号,那是告诉编译器,在里面我需要许多的值--在这些变量里,我怎么做到的?
Well, turns out that with arrays, not to make this too trippy too soon, but Arg V bracket something is a string, you can also use square bracket notation to go to a specific letter in a string, because little teaser a string is just an array.
好的,结果用那个数组,不要使这个很快引起幻觉,但是Argv什么的,是一个字符串,你也可以用方括号定位到,字符串中的一个特定的字母,因为一个字符串只是一个数组。
In a high-level language, square root might simply be a primitive that you can use rather than you having to go over and code it.
一个高级的语言,平方根可能仅仅,只是你能使用的一个基本要素,而不是你需要去编译它。
to do sqrt, or square root-- no, I'm going to square root use sqrt, that's the name I'm using here-- square root a hundred different places in some piece of code. Without function, I'd have to copy that piece of code everywhere.
让我做一下准备,想象一下我要调用sqrt或者-,不,我会调用sqrt函数,这是我在这里用的名字,我得把这段代码到处复制。
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