From: "Николай" <godsent@...>
Date: 2011-11-23T22:20:54+09:00
Subject: private and protected

Could anybody explain me this, please?

class First
     def say
         self.phrase
     end

     private

     def phrase
         'something'
     end
end

a = First.new
a.say
# got
NoMethodError: private method `b' called for #<A:0xb7756518>
     from (irb):44:in `say'
     from (irb):52
     from :0

If i write the same code with 'protected' instead of 'private' I got no 
error.
If i write the same code with calling 'phrase' instead of 'self.phrase' 
in 'say' method I got no error again.