From: Peter Vanbroekhoven <calamitas@...>
Date: 2005-08-31T00:01:23+09:00
Subject: Re: Method behaves differently when called using #send

On Tue, 30 Aug 2005, David A. Black wrote:

> I see what you mean; it's very magic.  I can't think of a way to
> implement it in Ruby, and even though someone will be able to with dl
> or whatever, it will still be too magic :-)

Actually... Here's an implementation using the very thing that started 
this thread:

   class Object
     private :send
     def method_missing(m, *args, &blk)
       if m == :send
         eval "self.#{args[0]}(*args[1..-1], &blk)"
       else
         eval "#{m}(*args, &blk)"
       end
     end
   end

   class A
     def do_sth
       puts "hello"
     end
     private :do_sth
   end

   A.new.instance_eval { do_sth } # => prints "hello"
   A.new.do_sth # => raises NoMethodError

It does no error checking in send, and I don't know if it reacts correctly 
to something like send(:send, ...), but you should get the gist.

Peter