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ruby_for_beginners.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en" xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">
<head><meta content="text/html;charset=UTF-8" http-equiv="content-type" />
<title>deck.rb presentation</title>
<meta charset="utf-8" />
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<link href="deck.js/introduction/introduction.css" rel="stylesheet" />
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</head>
<body class="deck-container">
<div class="theme-picker">
<h2>Themes</h2>
<label for="style-themes">Style:</label>
<select id="style-themes">
<option selected="selected" value="deck.js/themes/style/web-2.0.css">Web 2.0</option>
<option value="deck.js/themes/style/swiss.css">Swiss</option>
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<option value="">None</option>
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<option value="deck.js/themes/transition/fade.css">Fade</option>
<option value="">None</option>
</select></div>
<section class="slide subsection" id="">
<h1>The Complete Beginner's Guide to Programming</h1>
</section>
<section class="slide" id="">
<h1>What is a program?</h1>
</section>
<section class="slide" id="operating_systems">
<h2>Operating Systems</h2>
<p><img src="img/os_x_logo.jpg" alt=""></p>
<p><img src="img/windows_logo.gif" alt=""></p>
<p><img src="img/linux_logo.gif" alt=""></p>
</section>
<section class="slide" id="applications">
<h2>Applications</h2>
<p><img src="img/acrobat.jpg" alt="">
<img src="img/finder.png" alt="">
<img src="img/firefox.png" alt="">
<img src="img/itunes.png" alt="">
<img src="img/quicktime.jpg" alt="">
<img src="img/safari.png" alt="">
<img src="img/ms_office.png" alt="">
<img src="img/wordpress.jpg" alt=""></p>
</section>
<section class="slide centereverything" id="">
<h2>Web Application In Rails</h2>
<p><img src="img/web_app_in_rails.jpg" alt=""></p>
</section>
<section class="slide incremental smbullets" id="how_do_i_write_one">
<h2>How do I write one?</h2>
<ul>
<li>Learn about customer's requirements</li>
<li>Translate to "stories"</li>
<li>Pick a story that seems doable</li>
<li>Write code that does it</li>
<li>Show your work to the customer, get feedback</li>
<li>Based on feedback, adjust your stories</li>
<li>When a story is done, go back to "pick a story"</li>
<li>Repeat until app is finished!</li>
</ul>
</section>
<section class="slide subsection" id="">
<h1>Let's start writing code!</h1>
</section>
<section class="slide bullets" id="">
<p>#* Windows: git bash <img src="img/git_bash.png" alt=""></p>
<ul>
<li>Mac OS X: Terminal <img src="img/mac_terminal_sm.png" alt=""></li>
</ul>
</section>
<section class="slide commandline" id="">
<p>#$ irb</p>
</section>
<section class="slide" id="">
<h3>Variables</h3>
<h3>words that hold information</h3>
<pre><code>> my_variable = 5
=> 5
> my_other_variable = "hi"
=> "hi"
</code></pre>
</section>
<section class="slide" id="types_of_information">
<h3>Types of information</h3>
</section>
<section class="slide" id="strings_text">
<h3>Strings (text)</h3>
</section>
<section class="slide" id="numbers">
<h3>Numbers</h3>
</section>
<section class="slide" id="collections">
<h1>Collections</h1>
</section>
<section class="slide" id="arrays">
<h2>Arrays</h2>
<p>An Array is a list of objects.</p>
<pre><code>>> fruits = ["kiwi", "strawberry", "plum"]
=> ["kiwi", "strawberry", "plum"]
</code></pre>
</section>
<section class="slide" id="array_indexing">
<h2>Array Indexing</h2>
<p>Ruby starts counting at zero.</p>
<pre><code>>> fruits[0]
=> "kiwi"
>> fruits[2]
=> "plum"
>> fruits[3]
=> nil
</code></pre>
</section>
<section class="slide" id="array_methods">
<h2>Array methods</h2>
<ul>
<li>first, last</li>
<li>push, pop</li>
<li><p>shift, unshift</p>
<pre><code>fruits.first #=> "kiwi"
</code></pre></li>
</ul>
</section>
<section class="slide" id="hashes">
<h2>Hashes</h2>
<ul>
<li>aka Dictionary or Map</li>
<li><p>collection of key/value pairs</p>
<pre><code>>> states = {"CA" => "California",
"DE" => "Delaware"}
=> {"CA"=>"California", "DE"=>"Delaware"}
>> states["CA"]
=> "California"
</code></pre></li>
</ul>
</section>
<section class="slide" id="operators">
<h3>Operators</h3>
<h3>doing stuff with variables</h3>
<pre><code>> my_variable + 2
=> 7
> my_variable * 3
=> 15
> my_fruits = my_fruits + ["lychee"]
=> ["kiwi", "strawberry", "plum", "lychee"]
> my_fruits = my_fruits - ["lychee"]
=> ["kiwi", "strawberry", "plum"]
</code></pre>
</section>
<section class="slide" id="loops">
<h2>Loops</h2>
<h3>doing the same thing a bunch of times</h3>
<p>The hard way:</p>
<pre><code>>> puts fruits[0]
kiwi
=> nil
>> puts fruits[1]
strawberry
=> nil
>> puts fruits[2]
plum
=> nil
</code></pre>
</section>
<section class="slide" id="loops">
<h2>Loops</h2>
<h3>doing the same thing a bunch of times</h3>
<p>The easy way:</p>
<pre><code>>> fruits.each {|f| puts f}
kiwi
strawberry
plum
=> ["kiwi", "strawberry", "plum"]
</code></pre>
</section>
<section class="slide" id="loops_multiline">
<h2>Loops (multi-line)</h2>
<p>The easy way, with "do...end" rather than "{...}"</p>
<pre><code>>> fruits.each do |f|
?> puts f
>> end
kiwi
strawberry
plum
=> ["kiwi", "strawberry", "plum"]
</code></pre>
</section>
<section class="slide" id="conditionals">
<h3>Conditionals</h3>
<h3>doing something only if a condition is met</h3>
<pre><code>>> fruits.each do |f|
?> puts f if f == "plum"
>> end
plum
=> ["kiwi", "strawberry", "plum"]
</code></pre>
</section>
<section class="slide subsection" id="commandline_programs">
<h1>Command-Line Programs</h1>
</section>
<section class="slide bullets" id="hello_world">
<h2>Hello World</h2>
<p>hello.rb
@@@ Ruby
puts "Hello, World!"</p>
</section>
<section class="slide bullets" id="arguments_argv">
<h2>Arguments (ARGV)</h2>
<p>hello.rb
@@@ Ruby
puts "Hello, #{ARGV.first}!"</p>
<pre><code>$ ruby hello.rb Alice
Hello, Alice!
</code></pre>
</section>
<section class="slide bullets" id="conditionals">
<h2>Conditionals</h2>
<p>hello.rb
@@@ Ruby
if ARGV.empty?
puts "Hello, World!"
else
puts "Hello, #{ARGV.first}!"
end</p>
<pre><code>$ ruby hello.rb
Hello, World!
$ ruby hello.rb Alice
Hello, Alice!
</code></pre>
</section>
<section class="slide" id="sinatra">
<h2>Sinatra</h2>
<h2>hello_app.rb</h2>
<pre><code>@@@ Ruby
require 'rubygems'
require 'sinatra'
get '/' do
"<b>Hello, <i>bang bang</i>!"
end
</code></pre>
</section>
<section class="slide commandline" id="sinatra">
<h2>Sinatra</h2>
<pre><code>$ gem install sinatra
$ ruby hello_app.rb
== Sinatra/1.2.6 has taken the stage on 4567 for development with backup from Thin
>> Thin web server (v1.2.7 codename No Hup)
>> Maximum connections set to 1024
>> Listening on 0.0.0.0:4567, CTRL+C to stop
</code></pre>
<p>then open a browser to <a href="http://localhost:4567/">http://localhost:4567/</a></p>
</section>
<section class="slide bullets" id="sinatra_with_rerun">
<h2>sinatra with rerun</h2>
<pre><code>gem install rerun
rerun hello_app.rb
</code></pre>
<p>...now it'll automatically reload when you edit a file.</p>
</section>
<section class="slide" id="web_app_network_architecture">
<h3>Web App Network Architecture</h3>
<p><img src="img/web-application.png" alt=""></p>
</section>
<section class="slide" id="web_app_mvc_architecture">
<h3>Web App MVC Architecture</h3>
<p><img src="img/mvc_simple.png" alt=""></p>
</section>
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