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Hello and welcome to this Mooc
on Pharo:

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Live Object Programming in Pharo.

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For this first lecture
I'll present the mooc's aims.

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So what are they?

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You'll learn to program in Pharo,
obviously.

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It's important to understand
and master all the syntax,

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the full syntax and model,

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and the environment of Pharo.

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It's not just a language,

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it's a programming environment
with lots of tools.

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We'll show you
some of the most useful ones.

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The mooc won't limit itself
to just presenting Pharo.

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We'll deeply understand

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the object-oriented
fundamental mechanisms.

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That's really interesting.

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We'll illustrate these
with aspects of Pharo itself.

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We will also, from time to time,

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show you some design heuristics,

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heuristics which will let you,
in your life as a programmer,

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design applications

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in a more elegant,
more extendable way.

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You'll work on real examples
in this mooc,

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and at the end
you'll deploy your own web app

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that you'll have developed
from start to end.

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The mooc is structured
over 7 weeks.

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We'll start with syntactic aspects
of Pharo

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so you can quickly start
doing exercises.

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But we're also going to mix the points
linked to object design,

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so that you'll quickly understand
certain aspects.

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Then we'll look at aspects
linked to Pharo's core functions,

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like file systems and so on.

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The course isn't always linear.

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In the final sessions
we'll go back over concepts,

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to be sure you really understood

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what we discussed
in the first sessions.

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You'll have plenty of exercises
and mini projects.

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As motivation, after two weeks

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you'll have seen the full syntax
and the model,

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and you'll be ready
to do some mini projects.

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A quick word about us.

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There are three of us,
three colleagues,

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all experts
in object-oriented programming.

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I've worked on traits

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which influenced Perl,
Php and Scala.

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We're experts
in object-oriented design.

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We're part
of the Pharo core development group.

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And we're authors of several
open-source books on the web.

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I recommend them to you.

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So why Pharo?

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Setting aside that we developed it
and think it's a great language,

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it's very interesting
from an educational point of view

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because you'll be immersed
in a world of objects,

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interacting with
and manipulating objects.

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As an example,

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loops don't exist
as constructers in Pharo.

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They're messages sent to objects
that are collections.

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Conditions are messages
sent to objects that are booleans.

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So you'll constantly be interacting
with living objects

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and your programs will be transformed
under your fingers.

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The fact that Pharo
is fully written in itself

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means you have a wide possibility
for discoveries.

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Once you've understood
the syntactical aspects of Pharo,

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the whole world
will open up to you,

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because it's fully written in itself.

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So, to sum up this voyage
that I'm inviting you on...

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Pharo is pure and elegant.

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There are very few concepts used.

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It's fun to program because
of the interaction with objects.

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It's highly productive.

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Pharo is used in many universities

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because of its teaching properties
and the positive aspects

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that it teaches.

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One point which is often overlooked

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is that Pharo
is an empowering system.

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Pharo isn't a blackbox.

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You'll be able to see
how the system is implemented

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and modify things.

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The metaphor I often use
is that Pharo is a fish tank,

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and you can jump into the tank
and swim with the fish!

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That's very special.

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We're going to show you some videos
which will explain those aspects.

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You'll have access
to the entire system.