Re: additions to standard library?

From: John Max Skaller (skaller@maxtal.com.au)
Date: Tue Mar 21 2000 - 22:08:05 MET

Next message: Ravi Chamarty: "Stdlib doubts"

Previous message: Markus Mottl: "Re: Syntax for label (and more)"
In reply to: Don Syme: "RE: additions to standard library?"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

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 message: Ravi Chamarty: "Stdlib doubts"
Previous message: Markus Mottl: "Re: Syntax for label (and more)"
In reply to: Don Syme: "RE: additions to standard library?"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2b29 : Wed Mar 22 2000 - 17:08:40 MET