O que tem de novo no Ruby 2.0?

1. O que tem de novo no Ruby 2? Fabio Akita @akitaonrails codeminer42.com

4. Ruby 0.95 Dez 1995 Ruby 1.8 Ago 2003 Rails 0.8 Dez 2005 Ruby 1.9 Dez 2007

8. Ruby 2.0 24 de Fevereiro de 2013

9. Compatível com 1.9

10. Literal Symbol List

11. > %q[hello world] => "hello world" > %i[hello world] => [:hello, :world]

12. Keyword Arguments

13. def foo(options = {}) param1 = options[:param1] param2 = options[:param2] return [param1, param2] end > foo param1: "Hello", param2: "World" => ["Hello", "World"]

14. def foo(param1: nil, param2: nil) return [param1, param2] end > foo param1: "Hello", param2: "World" => ["Hello", "World"]

15. Module Prepend

16. > [1,2,3].to_s => "[1, 2, 3]"

17. module Foo def self.included(base) base.class_eval do alias_method :original_to_s, :to_s def to_s original_to_s + ", Foo" end end end end class Array include Foo end

18. > [1,2,3].to_s => "[1, 2, 3], Foo" > Array.ancestors => [Array, Foo, Enumerable, Object, Kernel, BasicObject]

19. module Foo def to_s super + ", Foo" end end class Array prepend Foo end

20. > [1,2,3].to_s => "[1, 2, 3], Foo" > Array.ancestors => [Foo, Array, Enumerable, Object, Kernel, BasicObject]

21. Lazy Enumerators

22. > a = (0..3).map { |i| i } => [0, 1, 2, 3]

23. > a = (0..3).lazy.map { |i| i } => #<Enumerator::Lazy: #<Enumerator::Lazy: 0..3>:map> > a.next => 0 > a.next => 1 > a.next => 2 > a.next => 3

24. > a = (0..Float::INFINITY).lazy.map { |i| i } => #<Enumerator::Lazy: #<Enumerator::Lazy: 0..Infinity>:map> > a.next => 0 > a.next => 1 > a.next => 2 > a.next => 3

25. Refinements

26. module Foo def hello "Hello, #{to_s}" end end class Array include Foo end > [1,2,3].hello => "Hello, [1, 2, 3]"

27. module Foo refine Array do def hello "Hello, #{to_s}" end end end using Foo > [1,2,3].hello => "Hello, [1, 2, 3]"

28. module Foo def bah refine Array do [1,2,3].hello def hello end "Hello, #{to_s}" end > bah.hello end NoMethodError: undefined end method `hello' for "Hello, [1, 2, using Foo 3]":String > [1,2,3].hello => "Hello, [1, 2, 3]"

29. http://rvm.io

30. curl -L https://get.rvm.io | bash -s stable --rails --autolibs=enabled

35. http://gembundler.com/

40. Browser NGINX Worker Linux

41. Browser NGINX Worker Linux

42. Browser NGINX Worker Ruby Linux

43. Browser NGINX Worker Rails Ruby Linux

44. Browser NGINX Worker Rails Ruby Linux

45. Browser Browser Browser Browser NGINX Worker Worker Worker Worker Rails Rails Rails Rails Ruby Ruby Ruby Ruby Linux

47. M&S Mark & Sweep GC

48. struct RBasic { VALUE flags; RString flags VALUE klass; klass };

49. RString RString RString flags flags flags klass klass klass

50. RString RString RString flags flags flags klass klass klass fork()

51. RString RString RString flags flags flags klass klass klass fork()

52. RString RString RString flags flags flags klass klass klass GC.start() RString RString RString flags flags flags klass klass klass

53. OOBW Out of Band Work

56. Lazy Lazy Sweep GC - Ruby 1.9.3

57. “CoW” Copy on Write

63. fork()

68. GC.start

73. Bitmap Bitmap Marking GC - Ruby 2.0

76. 9 00001001 8 00001000 7 00000111

77. 9 00001001 8 00001000 7 00000111

78. 9 00001001 8 00001000 7 00000111

80. 00000001 2^0 1 User 00000010 2^1 2 Moderator 00000100 2^2 4 Administrator

83. 1 1 1 0 0 0 0 0 0 0 0

84. 1 1 1 0 0 0 0 0 0 0 0 fork()

85. fork()

86. fork()

88. Browser Browser Browser Browser Browser Browser Browser Browser Browser Browser NGINX Worker Worker Worker Worker Worker Worker Worker Worker Worker Worker Rails Rails Rails Rails Rails Rails Rails Rails Rails Rails RubyRuby Ruby Ruby Ruby Ruby Ruby Ruby Ruby Ruby Linux

89. Browser Browser Browser Browser Browser Browser Browser Browser Browser Browser NGINX Worker Worker Worker Worker Worker Worker Worker Worker Worker Worker Rails Rails Rails Rails Rails Rails Rails Rails Rails Rails RubyRuby Ruby Ruby Ruby Ruby Ruby Ruby Ruby Ruby Linux

90. Rails 3.2.12+ Rails 4.0

91. Thanks! @akitaonrails

O que tem de novo no Ruby 2.0?

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