From: John Max Skaller <skaller@maxtal.com.au>
To: Don Syme <dsyme@microsoft.com>
Cc: "'caml-list@inria.fr'" <caml-list@inria.fr>
Subject: Re: additions to standard library?
Date: Wed, 22 Mar 2000 08:08:05 +1100 [thread overview]
Message-ID: <38D7E4B5.AAE8AEBF@maxtal.com.au> (raw)
In-Reply-To: <39ADCF833E74D111A2D700805F1951EF180144F3@RED-MSG-06>
Don Syme wrote:
>
> I've often wondered why languages don't support "extensions" to library
> namespaces (and perhaps even to functors). e.g. one could define
>
> let String.explode s = ....
> let String.implode s = ...
> let myfun = ...
The reason is that it is hard to localise these changes.
It isn't acceptable to extend the actual module, since two clients
could provide conflicting "extensions". This would break the
Open/Closed principle [Meyer, OOSC]
--
John (Max) Skaller, mailto:skaller@maxtal.com.au
10/1 Toxteth Rd Glebe NSW 2037 Australia voice: 61-2-9660-0850
checkout Vyper http://Vyper.sourceforge.net
download Interscript http://Interscript.sourceforge.net
next prev parent reply other threads:[~2000-03-22 16:01 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-03-14 17:24 Don Syme
2000-03-21 21:08 ` John Max Skaller [this message]
-- strict thread matches above, loose matches on Subject: below --
2000-03-21 21:43 Don Syme
2000-03-10 17:55 Manuel Fahndrich
2000-03-07 15:24 Markus Mottl
2000-03-08 19:03 ` Jean-Christophe Filliatre
2000-03-08 22:29 ` Markus Mottl
2000-03-10 10:51 ` Christian RINDERKNECHT
2000-03-09 13:18 ` Thorsten Ohl
2000-03-10 10:04 ` Francisco Valverde Albacete
2000-03-10 20:33 ` Markus Mottl
2000-03-14 23:15 ` Max Skaller
2000-03-11 18:49 ` Brian Rogoff
2000-03-12 1:54 ` Jerome Vouillon
[not found] ` <200003120239.DAA18581@miss.wu-wien.ac.at>
2000-03-14 17:53 ` Pierre Weis
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