Ruby: Beyond the Basics
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You've learned to program in Ruby, but now you want to start learning about how to move beyond the language basics and make use of some of the dynamic parts of the Ruby language. We'll cover that a bit here.
![class String
def to_alphanumeric
gsub /[^ws]/, ‘’
end
end](https://image.slidesharecdn.com/rubybeyondthebasics-120606161412-phpapp01/85/Ruby-Beyond-the-Basics-17-320.jpg)
![=> [:to_alphanumeric]](https://image.slidesharecdn.com/rubybeyondthebasics-120606161412-phpapp01/85/Ruby-Beyond-the-Basics-19-320.jpg)
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Ruby: Beyond the Basics
- 1. Ruby: Beyond the Basics by Michael Koby http://www.codecasts.tv
- 2. Hi, my name is... Michael Koby
- 3. @mkoby
- 6. What
- 7. What • Open Classes
- 8. What • Open Classes • Dynamic Methods
- 9. Metaprogramming Ruby by Paolo Perrotta O’Reilly: http://obyk.us/39267 Amazon: http://obyk.us/1efe7
- 10. Open Classes
- 11. What is an “Open Class?”
- 12. You’ve Heard of this by Another Name
- 13. Monkeypatching
- 15. class String #shortened for brevity def sub(a, b) #replaces string ‘a’ with string ‘b’ end def gsub(a, b) #similar to sub but with the /g from RegEx end #shortened for brevity end
- 17. class String def to_alphanumeric gsub /[^ws]/, ‘’ end end
- 18. 1.9.3 :005 > “my string”.methods.grep /alphanumeric/
- 21. class Employee def salary “Some Number” end end
- 22. class Employee def salary “Some Number” end end class Employee def name “Some Name” end end
- 24. e = Employee.new
- 26. e = Employee.new e.salary # => “Some Number”
- 27. e = Employee.new e.salary # => “Some Number” e.name
- 28. e = Employee.new e.salary # => “Some Number” e.name # => “Some Name”
- 29. class Employee def salary “Some Number” end end class Employee def name “Some Name” end end
- 30. Some Real Life Samples
- 31. Dynamic Methods
- 32. How You Usually Call Methods
- 37. x = 2
- 38. x = 2 x.send(:+, 2)
- 39. x = 2 x.send(:+, 2) => 4
- 40. class APIRequestWrapper attr_accessor :client def initialize @client = Savon::Client.new do |wsdl| #wsdl.options go here end end ## Makes API request, request_name is string ## parameters is a Ruby hash def make_api_request(request_name, paramenters) @client.request(request_name.to_sym) do |soap| soap.body = parameters end end end
- 41. Some Real Life Samples
- 42. In Closing...
- 43. Open Classes
- 44. class Employee def salary “Some Number” end end class Employee def name “Some Name” end end
- 45. Dynamic Methods
- 46. x = 2 x.send(:+, 2) => 4
- 47. Metaprogramming Ruby by Paolo Perrotta O’Reilly: http://obyk.us/39267 Amazon: http://obyk.us/1efe7
- 48. Thank You!