This document discusses Ruby classes and class methods. It shows how to define class methods by using Class.new and define_method. It also demonstrates defining class methods by using define_class_method. Finally, it provides an example of using 'rake' to apply a patch from a Pastie URL and generate a patch file.

1. Chris Wanstrath
http://github.com/defunkt

2. • define_method
• Class.new
• instance_eval
• send

3. class Person
singleton = (class self; self end)
tons_of_class_methods.each do |name, body|
singleton.send(:define_method, name, )
end
end

4. class Class
def singleton
(class self; self end)
end
def define_class_method(name, )
singleton.send(:define_method, name, )
end
end

5. class Person
tons_of_class_methods.each do |name, body|
define_class_method name,
end
end

6. Ruby is powerful

7. 'rake'.sub 'r', 's'