From: Ruby Newbee <rubynewbee@...>
Date: 2010-01-21T11:43:56+09:00
Subject: about variable name and method name

class Array
 def atoh
     hash = Hash.new
     if size % 2 != 0
         raise "size must be odd"
     end

     0.step(size-1,2) do |c| hash[self[c]] = self[c+1] end
     hash
 end
end


For "size" in the code above, we know it's a self.size method actually.
But how ruby differ it's a variable or an instance method?

Thanks.