Palestra apresentada no 1º encontro ABCoDes no ITESCS - Instituto de Tecnologia de São Caetano do Sul.

1. sejafelizcom
ruby

2. lucas renan

3. nu

4. guru
sorocaba

7. sad panda

8. yukihiro matsumoto

9. perl,smalltalk,
eiffel,ada,lisp

10. rubypermiteque
vocêsejafeliz

11. uhull,valeumatz:)

12. 5.times { puts "We
love Ruby" }

13. puramente
orientadaaobjetos

14. 1.class # => Fixnum

15. 1.class # => Fixnum
"ruby".class # => String

16. 1.class # => Fixnum
"ruby".class # => String
1.to_s.class # => String

17. rubypermiteque
vocêescrevacódigo
elegante

18. class Person
end
person = Person.new

19. class Person
attr_accessor :name
end
person = Person.new
person.name = "lucas"

20. class Person
attr_accessor :name, :age
end
person = Person.new
person.name = "lucas"
person.age = 24
puts person.age # => 24

21. class Person
attr_accessor :name, :age
def is_adult?
@age > 18
end
end
person = Person.new
person.name = "lucas"
person.age = 24
puts person.is_adult? # => true

22. activesupport

23. require "active_support/all"
1.day.ago # => 2013-08-09 00:00:00
-0300

24. require "active_support/all"
1.day.ago # => 2013-08-09 00:00:00
-0300
Date.today.beginning_of_month # => Thu,
01 Aug 2013

25. require "active_support/all"
1.day.ago # => 2013-08-09 00:00:00
-0300
Date.today.beginning_of_month # => Thu,
01 Aug 2013
[1, 2, 3].sum # => 6

27. metaprogramming

28. klass = Class.new do
end
Person = klass
Person.name # => Person

29. klass = Class.new do
end
Person = klass
Person.name # => Person
person = Person.new

30. klass = Class.new do
["say", "scream"].each do |method|
define_method method do |message|
"#{method}ing: #{message}"
end
end
end
Person = klass
Person.name # => Person
person = Person.new
puts person.say "ruby" # => saying: ruby
puts person.scream "ruby <3" # =>
screaming: ruby <3

31. instalação

34. atéquandovocê
vaificartriste?

35. obrigado:)