Kon nichi wa_ruby
Upcoming SlideShare
Loading in...5
×
 

Like this? Share it with your network

Share

Kon nichi wa_ruby

on

  • 1,157 views

 

Statistics

Views

Total Views
1,157
Views on SlideShare
1,074
Embed Views
83

Actions

Likes
0
Downloads
5
Comments
1

4 Embeds 83

http://spitfiresky.com 72
http://feeds.feedburner.com 8
http://localhost 2
http://localhost:4331 1

Accessibility

Categories

Upload Details

Uploaded via as Adobe PDF

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
  • Nice thanks!
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Kon nichi wa_ruby Presentation Transcript

  • 1. KON’NICHI WA, RUBY An introduction to Ruby with an appearance by Sinatra Monday, September 27, 2010
  • 2. Speaker.new({ :name => "Scotty Motte", :twitter => "@spitfiresky", :email => "scott@scottmotte.com" }) Monday, September 27, 2010
  • 3. ABOUT RUBY • Created by Matz - he’s from Japan! • Written for humans not for computers • Easy to read and write • 5.times { puts “Arigato Matz! Have some chunky bacon!”} • [‘riverside’, ‘japan’, ‘america’].each { |locale| puts locale.capitalize } • Popularized by Ruby on Rails Monday, September 27, 2010
  • 4. INSTALLATION • Mac Users, I say rejoice, for thou haveth Ruby already! • Windows users - are you prejudiced towards Japan or something?! Let’s fix that by installing Ruby: • http://rubyinstaller.org/ - follow the default installation steps and you are good to go. It will install to your programs directory. Monday, September 27, 2010
  • 5. IRB IS THE WORD • irb - Interactive Ruby Console. The best way to tryout and learn Ruby. • Comes packaged with your Ruby Install • To Use: • Mac: open up command line and type: irb • Windows: open up Interactive Ruby program Monday, September 27, 2010
  • 6. IRB EXAMPLES 3.times { puts "da" } ["paris", "france", "napoleon"].each { |name| puts name.capitalize } def say_hi_to(name) puts "Please to meet you, #{name}!" end say_hi_to("Mr. President") cost = 100 tax = 8.25 total = cost + tax puts total Monday, September 27, 2010
  • 7. EVERYTHING IS AN OBJECT 1.class # => Fixnum 'a'.class # => String :z.class # => Symbol class Foo # something here end Foo.class # => Class Foo.new.class # => Foo Monday, September 27, 2010
  • 8. DYNAMICALLY TYPED Basically, this means you don’t have to define things as integer or string before runtime. def foo(bar) bar * 2 end foo(1) # => 2 foo("a") # => "aa" Monday, September 27, 2010
  • 9. DUCK TYPING If it looks like a duck, walks, like a duck, and quacks like a duck, then it’s probably a duck. "a".respond_to? :size # => true 1.respond_to? :+ # => true 1.respond_to? :inject # => false Monday, September 27, 2010
  • 10. MORE EXAMPLES OF RUBY Strings name = 'Riverside' "Hello, #{name}!" Methods str = "Hello, Riverside" str.size # => 16 str.sub("Riverside", "World") # => "Hello, World!" Numbers 1 + 9 # => 10 Arrays [1, 2, 3] # => [1, 2, 3] Monday, September 27, 2010
  • 11. MORE EXAMPLES OF RUBY Hashes options = {:name => "Riverside", :state => "CA"} Iterators [1,2,3].each {|n| puts n} # => 1 2 3 If/Elses if something == 2 # do something elsif something == 1 # do something else # do somthing else end Monday, September 27, 2010
  • 12. ENTER SINATRA • Sinatra is a web framework built on top of Ruby. It’s kinda like Rails, but much lighter. You use it to build websites with Ruby. • [sudo] gem install sinatra • Gems are just a cool word for ‘libraries’ in the Ruby world. They contain packaged up code that do cool things. Rails is a gem, Sinatra is a gem, and nokogiri is a gem. You can find gems at http://rubygems.org Monday, September 27, 2010
  • 13. PUT THIS IN YOUR PIPE Monday, September 27, 2010
  • 14. AND SMOKE IT Monday, September 27, 2010
  • 15. AND BLOW SMOKE RINGS Monday, September 27, 2010
  • 16. RESOURCES • Ruby-Lang Homepage - http://www.ruby-lang.org/en/ • Windows Installer - http://rubyinstaller.org • Ruby Gems - http://rubygems.org • Sinatra - http://sinatrarb.com • E-Text Editor (windows users) - http://www.e-texteditor.com/ • Textmate (mac users) - http://macromates.com/ • Why’s Poignant Guide to Ruby - http://mislav.uniqpath.com/poignant-guide/ Monday, September 27, 2010