Let's animate Winston using the shortcuts that you just learned.
So, here we've got Winston with his eyes
and we've got this eyeSize variable.
So if we wanted to make Winston's eyes get bigger
we could just say "eyeSize += 1,"
adding one pixel to the size of the eyes
each time, and whoah! Look at it, it's buggin' out!
Let's restart -- whoah! Bug out! Bug Out!
Now, that's pretty cool.
And, it turns out in programming
we actually add one to variables a lot.
Maybe while animating but also,
you'll see there's a lot of other reasons
why we add one to variables later.
Programmers got bored of writing "+= 1" all the time
because programmers get bored of silly things.
So they came up with a shorter way of writing it.
So instead of "eyeSize += 1," we could just write "eyeSize++"
You see, it will do exactly the same thing.
It's just a shorter way of doing it.
And not only do we use this in programming,
Now most programmers use it in everyday speech.
Because pretty much we're all familiar with ++.
And it's an easy way of saying
that you're making something a little bigger.
So if we went to Winston's birthday party,
we might say, "Oh, happy birthday Winston, Winston++!"
Because Winston just got a year older.
Or if we just learned a new fact you might be like,
"Oh, go us, intelligence++!"
That's pretty fun.
So when should you use ++ versus +=?
Well, I think for animation it's cool to use +=, because then
you can use the number scrubber and you can be like,
"Whoah! Let's make it -- whoah whoah! That was awesome!
Let's make it really crazy, really different!
Oh! (laughter) See how fun that is?
But, you know, depending on what you're doing
it might be convenient just to say "++."
And you'll see later that there's lots of times
when you might want to add one
to variables, not just for animation,
where the ++ operator could become even more useful.
So just keep that in mind when you see that ++
and try using it in your everyday speech.