From: "T. Onoma" <transami@...>
Date: 2003-11-19T10:06:51+09:00
Subject: Re: "stereotyping" (was: Re: Strong Typing (Re: Managing metadata    about attribute types)LONGEST SUB?

I wonder if it would be helpful to be able to ask a method what the respond_to? requirements of its parameters will be.

   def read(io_object)
     io_object.read
   end

   method(:read).duck_signiture  # => [ [:read] ]

then you might

   def read(io_object)
     self.method(:read).duck_signiture[0].each { |m| 
       fail "Not Responsable Object" unless io_object.respond_to?(m)
     }
     io_object.read
   end

a shorthand would be nice.

-t0