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[MUSIC]

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So far, we've learned about blocks
in Ruby and how powerful they are.

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Now we're going to put all of
that knowledge to the test and

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write a program using work spaces.

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We'll be working with Ruby's built in
classes, writing our own classes and

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methods, and practicing with blocks.

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So let's go ahead and get started.

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Okay, so let's go ahead and
create our own class that uses blocks and

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hashes and strings and
everything we've learned so far.

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What we're going to do is make a class for
a monster.

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And a monster is going to be able
to do a few different things.

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And we will do these things using blocks.

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So, let's go ahead and create monster.rb.

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So, first step is to define the class.

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And the class is Monster.

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We're going to go ahead and

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give the monster a name when
we initialize the class.

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And, let's go ahead and
just set that to an instance variable.

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And make an attr_reader out of that so

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we don't have to type the at
sign inside of the class.

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So, first thing that we'll do?

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Let's go ahead and
make the monster say something.

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And the monster will say something, and
then execute whatever is in the block.

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We're going to assume that
when somebody calls this,

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they are going to be printing
something to the screen.

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So we'll just go ahead and
print the name says, so

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that would be the name of the monster,
and the word says.

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So let's go ahead and
create a new monster here.

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And we'll give this monster a very
intimidating monster-like name.

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Fluffy.

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And, the monster will say.

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What's the monster gonna say?

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What's something scary
that a monster would say?

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Welcome to my home.

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Let's go ahead and save that.

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And run it.

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Oh, nothing happened.

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Why?

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Because we didn't call the block or
yield to it.

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So let's go ahead and
yield, and run this again.

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So there we go, Fluffy says...

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Welcome to my home.

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And that's a pretty good start.

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So let's go ahead and start implementing
some more actions in the next video.