Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!hsi!stpstn!cox
From: cox@stpstn.UUCP (Brad Cox)
Newsgroups: comp.object
Subject: Re: testing object oriented programs
Message-ID: <5147@stpstn.UUCP>
Date: 2 Jun 90 15:35:46 GMT
References: <1990May20.154035.15064@axion.bt.co.uk| <54783@microsoft.UUCP> <5121@stpstn.UUCP> <54917@microsoft.UUCP>
Reply-To: cox@stpstn.UUCP (Brad Cox)
Organization: Stepstone
Lines: 18

In article <54917@microsoft.UUCP> jimad@microsoft.UUCP (Jim ADCOCK) writes:
>In article <5121@stpstn.UUCP| cox@stpstn.UUCP (Brad Cox) writes:
||Open universe languages simply provide support for solving open-universe
||*problems* (collections of unknown components, pluggable software components,
||software components marketplaces, etc).
|
|Ideally, since in real-world libraries over half the classes are leaf classes,
|I'd like to be able to specify a leaf class as being such, and declare it
|"Closed." 
|Classes defined as being inheritable, and whose methods can be overridden
|would be considered "Open." 

By "open universe languages", I was referring to encapsulation/binding, not
to inheritance, which is a different matter altogether.
-- 

Brad Cox; cox@stepstone.com; CI$ 71230,647; 203 426 1875
The Stepstone Corporation; 75 Glen Road; Sandy Hook CT 06482