From: Pierre-Charles David <Pierre-Charles.David@...>
Date: 2001-10-24T00:30:05+09:00
Subject: [ruby-talk:23056] Re: Deprecate keyword?

Morris, Chris wrote:

> Does Ruby have anything like Java's deprecate keyword? 


Not that I know of, but I came up with this:

----------------------------------------------------
class Module
   def deprecate(methodName)
     module_eval <<END
     alias_method :deprecated_#{methodName}, :#{methodName}
     def #{methodName}(*args)
       $stderr.puts "Warning: calling deprecated method 
#{self}.#{methodName}"
       return deprecated_#{methodName}(*args)
     end
END
   end
end

class Foo
   def print; puts "foo"; end
end

Foo.new.print

class Foo
   deprecate :print
end

Foo.new.print
----------------------------------------------------

I am not a Ruby expert though, so there may be a better way to do it.

-- 
Pierre-Charles David (pcdavid <at> emn <dot> fr)
Computer Science PhD Student, �cole des Mines de Nantes, France
Homepage: http://purl.org/net/home/pcdavid