Okay, so branching statements.

We talked very briefly about break, Ken you talked about

maybe you're going down the wall and you go woo, this milk's bad now.

You want to break, you want to just get out of this loop.

Get me out of here, I don't want to drink sour milk, the rest of these are all bad.

You can break out of the loop.

It's a keyword.

If you're inside of the loop and you say break, it will stop going.

Continue, we'll look at here in a second, but

what it does is as you're going through each one of the lines of the code there.

If you want to not run the rest of the lines below, you can call continue and

it will jump back to the top and run through again.

Labels are a thing.

You can be inside of a loop and say break, and

somehow they avoided the words saying go to, but you can go to a label.

And through the history of programming, go to is a bad thing.

It creates what is known as spaghetti code.

Which means that you try to follow code and

it looks like little strands of spaghetti.

And it's not a good thing.

You can solve a lot without using a label.

So I say use them sparingly, they're not common.

And if you get into a situation where you want to use one, check yourself.

[LAUGH] You don't want to

introduce spaghetti code.

You don't want somebody looking at your code, trying to be like, I went up here.

Am I over here, where?

You don't want that.

But they do exist, and you might see them.

And you can also return.

If you're inside of a loop, and there's something that you're, like, oh,

this method's done.

I don't need to do this thing at all anymore.

This whole method [INAUDIBLE].

You can just call a return method there, and the loop will stop and

jump out, pop out.

Okay, so the last example that we have is the t-shirt give away.

So, while there's prizes left, we're gonna ask Is the attendee present?

If they're not here, we're gonna try again.

And let's try again here, can anybody think of what that is?

What's this try again?

We're gonna jump back up to the while.

There we go, continue, excellent.

So we're going to continue, we're going to come back up and

say is the attendant present?

If they are here, we're gonna ask what size.

And the reason why we don't want to continue,

we don't want to ask what size if they're not here.

There's no point to do this extra work that's down here,

we're not gonna give away a shirt to nobody either.

So we have to do that.

So what I did was I wrote some JavaScript that [INAUDIBLE] the meetup attendees.

And not 90 people are here, so we might have a continue problem.

We might need to check a continue, but

I am going to randomly sort that list and give out some t-shirts.

That sound good?

All right, you get a shirt, you get a shirt.

>> [LAUGH] >> All right, so

the t-shirt code is in here, called prizes.

Let's bring this down.

So I have a list that you don't need to see, that returns a shuffled

list of all of the Rsvps.shuffled at the time that we run this code.

And I am gonna keep track of the prizes that are given away,

and I am also gonna keep track of the drawingNumber.

And while we've given away five,

we are going to pull out of the RSVP list that number.

This is that for loop.

We could have written this with a for loop, but

notice that I'm using this drawing number.

We're gonna say, Is the person present?

If they're here and I have to remember to type no.

Then we're gonna continue.

So we're calling the continue keyword.

It's gonna go back up to the top.

It's not gonna run the rest of this.

And then we're gonna ask what size you are.

You can kinda imagine multiple bits of this continue or

multiple bits of this break.

This isn't working and there's a break.

Let's imagine that we went past 30 people and nobody's here, we would call break.

We can put in different sorts of things in here.

You could have a continue in here, you could have a break in here,

that sort of thing.

Then we'll do the prizes given away.

So I'm gonna assume that you publicly joined a meetup,

and your name's on the page already.

Your name might be in Treehouse Video, maybe.

So you kind of win two prizes, you win a shirt and Treehouse and

you'll be bummed out if you weren't here, cuz your name's gonna be in a video.

>> And you don't have a shirt.

>> If your name's in the video and you see this at home and you weren't here,

I'll send you a shirt, okay.

>> [LAUGH] >> You're gonna get so busted.

All right, [LAUGH] all right.

Her we go.

Winners, look at winners.

Is Eric Ewer's present?

No Eric Ewers.

So, here we go.

I'm gonna say no and it's gonna continue.

Summer present?

Yeah, all right.

>> [APPLAUSE] >> So I'm gonna say anything.

I'm gonna say, yep, Summer's here, and what's your t-shirt size?

>> Small.

>> Small, okay.

Path's posse, path post.

>> Yeah, that's me.

>> That's you?

Yeah, all right, so we'll loop here till we hit five.

All right.

I'm not actually gonna use this data we're just,

I was kind of trying to show that we did the.

Sarah I know her, and she is not here, Sarah.

>> [LAUGH] >> Is Amy present?

All right.

>> [APPLAUSE] >> Ashley.

>> [APPLAUSE] >> All right,

Simone Flore?

No, Simone.

>> [LAUGH] >> Yeah.

>> [APPLAUSE] >> There we go.