Ruby

You gonna love it.

Transcript

1. Ruby A language that makes programmer programmer Ruby A language that makes programmer happy. programmer happy.
2. Introduction Ruby Ruby Introduction Ruby Ruby
5. DIT’.count(‘D') = Array.new = Array.new class Integer def even? (self % 2) == end end end (1..10).select { | # => [2, 4, 6, 8, 10] ) == 0 { |n| n.even? } => [2, 4, 6, 8, 10]
6. ‘stressed’.reverse Food = [‘maggi', ‘chocolate ‘stressed’.reverse # desserts each { |food| print # Maggi Chocolate Ice reverse chocolate', ‘ice-cream'] reverse # desserts print( food.capitalize ) } # Maggi Chocolate Ice-cream
10. Why Ruby Ruby ?
15. get "/" do @articles = Article haml :index, :layout => : haml :index, :layout => : end get "/articles/:id" do @article = Article haml :show, :layout => : end end Article.all :layout => :blogue :layout => :blogue do Article.get(params[:id]) :layout => :blogue
17. class DoNothing class DoNothing { public static void main(String[] { // This program do nothing. } } } static void main(String[] args) // This program do nothing.
18. # This program i is like us, a week before exam
19. class HelloWorldApp { public static void main(String[] System.out.println("Hello W } } public static void main(String[] args) { lo World!"); // Display the string.
20. puts “Hello Papier Papier Show”
21. Class Circle private Coordinate center, float radius public void setCenter(Coordinate center){ this.center = center; this.center = center; } public Coordinate getCenter(){ return center; } public void setRadius(float radius){ this.radius = radius; } } public Coordinate getRadius(){ return radius; } } Coordinate center, float radius; (Coordinate center){
22. class Circle class Circle attr_accessor end :center,:radius
23. exit unless "restaurant". "restaurant".include? "Pizza"
30. Beautiful Beautiful Code Code Beautiful Beautiful Code Code
31. module Logging def logger @logger ||= Logger end End End class Person include Logging def relocate logger.debug "Relocating person..." # do relocation stuff logger.debug "Relocating person..." # do relocation stuff end end Logger.new(opts) "Relocating person..." do relocation stuff "Relocating person..." do relocation stuff
35. Ruby is designed to make programmers Ruby is designed to make programmers happy. - Matz - Matz
43. Why Ruby Why Ruby … … Why Ruby Why Ruby !!! !!!