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Date: Thu, 3 May 2007 01:04:58 +0200
From: micha <micha-1@fantasymail.de>
To: caml-list@inria.fr
Subject: objects as method arguments
Message-ID: <20070503010458.778128e2@hmmm.de>
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X-Spam: no; 0.00; cheers:01 inherit:01 inherit:01 objects:02 arg:03 arg:03 unit:03 ugly:03 arguments:07 michael:07 rather:08 looks:08 everytime:08 fun:08 object:09 


I want to have the following:

class c = object
 inherit base
 method m (arg : #base) = arg#do_something
end;;

this gives an error. Is the only way to get this working to write it
that way?

class c = object
 inherit base
 method m: 'a.  (#base as 'a) -> unit  = fun arg -> arg#do_something
end;;

If  I have more of such methods, that looks rather ugly. Also I
don't want to cast the argument-object to the baseclass type
everytime...

do I overlook something?

cheers
 Michael