Hi,

Is there a difference between these two pieces of code?  Is one of the
two cheaper than the other?  

        module Hello        |     module Hello
          def hi            |       def hi
            "hi"            |         "hi"
          end               |       end
          alias hello hi    |       alias_method :hello, :hi
        end                 |     end               

What if hi was a very long and complicated piece of code, possibly
taking up lots of memory?  Is this practical (given that hello will be
a copy of hi), or is it better to say

	def hello
	  hi
	end

cordially,
Richard