From: Trans <transfire@...>
Date: 2007-08-07T02:54:39+09:00
Subject: Dynamic alias

Honestly, alias bugs me to know end. When meta-programming, alias is
notorious for causing problems. Not only is it a keyword (yuk), but it
is inherently static.

Well, it doesn't fix everything of course, but here's a little snip
that  came to me today to take some of the static edge off:

 class Module
    alias _alias_method alias_method

    def alias_method(name,target)
      begin
        _alias_method(name,target)
      rescue
        module_eval %{
          def #{name}(*a,&b)
            #{target}(*a,*b)
          end
        }
      end
    end
  end

Now it's possible to alias a method that's hasn't been defined yet.

T.