RE: "Deprecate"

It's definitely an ISO term, I see it used for features of C++.

There's then discussion even there of what it means. It is, I think, meant to be used for "we don't think you should use this, there's something better, and this is a warning that it may get removed in a future version". In the case of computer languages there is an additional possibility of "your compiler may emit a warning if you persist in using it".

But the only major feature (export) removed in the last C++ version went straight from "part of the standard, but only one compiler ever implemented it, and thus found out it was a bad realisation of an idea" to removed, with no intermediate deprecated stage. And other features just hang around deprecated. So it really doesn't guarantee anything in that instance, neither than if deprecated will go, not if not deprecated won't go.

-- 
Christopher Dearlove
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-----Original Message-----
From: ietf-bounces@ietf.org [mailto:ietf-bounces@ietf.org] On Behalf Of t.p.
Sent: 29 August 2013 12:56
To: ietf
Subject: "Deprecate"

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I recently saw 'deprecate' used in an IANA Considerations and turned to
"IANA Considerations" [RFC5226] to see how it was defined only to find
no mention of it there.  I am used to the term from SMI, as quoted
below, but that seems not quite right, in that a deprecated IANA entry
never disappears, as in
http://www.iana.org/assignments/smi-numbers/smi-numbers.xhtml#smi-number
s-5

Are there other, perhaps better definitions of the term 'deprecated' in
use outside SMI (and yes, I know about praying nuns!)?

Tom Petch

----- Original Message -----
From: "Fred Baker (fred)" <fred@cisco.com>
To: "IPv6 Maintanence" <ipv6@ietf.org>
Sent: Monday, July 29, 2013 3:32 PM
Subject: "Deprecate"

> At the mike a moment ago, I referred to an existing formal definition
of "deprecate". For the record, the reference is to RFC 1158, which
reads:
>
> 3.1.  Deprecated Objects
>
>    In order to better prepare implementors for future changes in the
>    MIB, a new term "deprecated" may be used when describing an object.
>    A deprecated object in the MIB is one which must be supported, but
>    one which will most likely be removed from the next version of the
>    MIB (e.g., MIB-III).
> --------------------------------------------------------------------
> IETF IPv6 working group mailing list
> ipv6@ietf.org
> Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6
> --------------------------------------------------------------------
>

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