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ANA BELL: OK.
We have our class.
We've done pretty much everything up until here,
and we're going to add this special function here.
So we're implementing this underscore underscore
eq underscore underscore.
And implementing this is going to allow us
to compare two types of cars.
So the way I've decided to compare two types of cars
is I'm saying the two cars are going
to be equal if they have the same number of wheels,
they have the same color, and if they
have the same number of doors.
OK?
So if all of these are equal, then return true
and else return false.
Inside the actual program here, I'm
creating one car, four wheels, two doors.
I'm changing its color to red.
I'm creating another car-- four wheels, two doors.
By default, this new car, or your car,
is going to have the color empty string,
because that's how a new car gets initialized, right?
So between my car and your car, the difference
is going to be the color.
OK?
So the color is not going to be the same,
but they have the same number of wheels
and the same number of doors.
So because I implemented the equal method in my code,
this does not throw an error.
This lets me proceed.
It compares four with four, which is good,
two with two, which is good.
And then the colors don't match, so it's
going to say false, which most of the guys
are getting it right.