-
I'm going to start somewhere near the middle of the code. Again, a lot of times, people don't do that.
我会在代码中间的某个位置开始,再说一次，很多时候人们不会这么做。
-
Having now used this pseudo code to line things up, I can start putting some additional structure on this.
用伪代码把这些事情串起来后,我可以开始进行,一些结构方面的优化了。
-
And we also have starting this Sunday, lead by one of the course's teaching fellows, what we call "walkthroughs," so this is kind of programming lexicon.
我们这周天开始“代码走查“,这个会由研究生助教带领大家，什么叫做“走查“，然后这是一种,编程词库。
-
When I started off I was programming for Sygen and I wrote the first version.
一开始为网站写代码的时候,我写了第一个版本。
-
It's okay. So this first line of code, I will get it started but then I'm gonna have you take over and actually instruct Philip what to do here.
第一行代码就从这里开始，接下来我会让你,接管并指导飞利浦。
-
This also, by the way, in some sense, gives me the beginnings of my comments for what the structure of my code is going to be.
顺便说一句，在某种意义上这也是我,对于我的代码结构的,讲解的开始。
-
When we start writing code, you're going to see that difference, but for now, don't worry about it, I just want to plant that idea.
当我们开始写代码的时候，你就会看到区别了，但是现在别担心，我只是想让你们初步有个印象。
-
The colon's identifying a block of code.
冒号意味着一段代码的开始，这里的意思就是。
-
And what it's saying semantically is, using that variable as my placeholder, have it walk through this collection, starting at the first thing, execute that code, then the next thing, execute that code, and so on.
它的语义意思就是，把这个变量应用为我的占位符，用它来遍历这个集合，从第一个元素开始，执行代码，然后下一个元素，再执行代码。
-
And so what I was hinting at earlier when you put semicolons in the wrong place, and then proceed to have curly braces around arbitrary lines of code, you're creating an even more local scope there, which is generally not the right intended behavior.
在之前我暗示了,当你把一个分号放在错误的地方时,然后开始用花括号,括上任意行的代码，你在那里创建了一个局部范围，那个不是故意的行为。
-
And when I'm starting to write lots of lines of code, you know, it's frankly kind of useful to be able to see more on the screen at once without having to scroll.
当我开始写很多行代码的时候，你们懂的，这明显是有用的，当你可以在屏幕上看到更多的代码,而不用滚动屏幕。
-
And notice, unlike Scratch where some of you might have realized it starts to get a little ugly, you have an "if else" and then you have another here and another one and things start to move and move and move like this, it gets very messy.
请注意，不像Scratch，在那里,你们其中某些人可能认识到它变得有点丑，你有一个“if，else“然后这里又另一个,那里又有一个，代码就像这样开始跳转，跳转再跳转,它开始变得有点凌乱了。
-
And I originally decided I was going to have as points, it's going to have internal values of an x and a y.
写了一堆代码,然后我以开始决定，是要把值放到点里面的,点有内部的x坐标和y坐标。
应用推荐