From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD,
	FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!news.eternal-september.org!news.eternal-september.org!feeder.eternal-september.org!news.glorb.com!peer02.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!post02.iad.highwinds-media.com!fx15.iad.POSTED!not-for-mail
From: Shark8 <OneWingedShark@gmail.com>
User-Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64;
 rv:31.0) Gecko/20100101 Thunderbird/31.0a1
MIME-Version: 1.0
Newsgroups: comp.lang.ada
Subject: Re: Your wish list for Ada 202X
References: <7f1c01c5-3563-4b94-9831-152dbbf2ecdc@googlegroups.com>
 <bqr781FmefuU1@mid.individual.net>
 <1wjmcbk375lzk.6o7dpqcp3va3.dlg@40tude.net>
 <br07nkFnvrbU1@mid.individual.net> <lihtai$6oj$1@loke.gir.dk>
 <br8bu5Fg3keU1@mid.individual.net> <lin047$uik$1@loke.gir.dk>
 <brdegqFi62jU1@mid.individual.net> <lis5et$gt1$1@loke.gir.dk>
 <brepivFq9kcU1@mid.individual.net> <lj48fr$b48$1@loke.gir.dk>
 <11241mc0j3ewn.14ahwtra3l1i8.dlg@40tude.net> <tMp5v.132103$dK.57197@fx07.iad>
 <10o6qo98dwzjs$.rdpzvq7w1lep.dlg@40tude.net> <lj6tla$733$1@loke.gir.dk>
 <1y4292c8reke$.10t8zilxfxjqf.dlg@40tude.net>
 <rJU5v.136982$dK.105028@fx07.iad> <98un5d2zp91p$.cbmroy0r1uqu.dlg@40tude.net>
 <%fW5v.233114$ZP3.133046@fx20.iad>
 <1m2e01a5935at$.7808izv5mhqk.dlg@40tude.net> <pZ96v.162051$kp1.2017@fx14.iad>
 <t7hr2hz9amv9.1dk88s5p8ymae.dlg@40tude.net>
In-Reply-To: <t7hr2hz9amv9.1dk88s5p8ymae.dlg@40tude.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Message-ID: <Jhb6v.154929$2B.95506@fx15.iad>
X-Complaints-To: abuse@teranews.com
NNTP-Posting-Date: Thu, 24 Apr 2014 16:50:49 UTC
Organization: TeraNews.com
Date: Thu, 24 Apr 2014 10:50:49 -0600
X-Received-Bytes: 3083
X-Received-Body-CRC: 1989478069
Xref: news.eternal-september.org comp.lang.ada:19573
Date: 2014-04-24T10:50:49-06:00
List-Id: <comp.lang.ada>

On 24-Apr-14 10:19, Dmitry A. Kazakov wrote:
> On Thu, 24 Apr 2014 09:20:52 -0600, Shark8 wrote:
>
>> On 24-Apr-14 01:30, Dmitry A. Kazakov wrote:
>>> On Wed, 23 Apr 2014 15:28:27 -0600, Shark8 wrote:
>>>
>>>> On 23-Apr-14 14:00, Dmitry A. Kazakov wrote:
>>>>> On Wed, 23 Apr 2014 13:43:19 -0600, Shark8 wrote:
>>>>>
>>>>>> On 23-Apr-14 01:45, Dmitry A. Kazakov wrote:
>>>>>>> In the case of files there already is such stick object: /dev/null.
>>>>>>
>>>>>> I think there's a problem with that assertion
>>>>>>> C:\Programming\Projects\SiennaSCL\src>cd /dev/null
>>>>>>> The system cannot find the path specified.
>>>>>>
>>>>>> See?
>>>>>
>>>>> Path /= File
>>>>
>>>> Not much different:
>>>
>>> Decisively different.
>>>
>>> It would be trivial to implement Null_File_Type, provided there were
>>> Root_File_Type. Alas, non-tagged File_Type is Ada 83 heritage.
>>>
>>> If you don't mind being GNAT-locked, you can implement GNAT-specific
>>> Null_File of File_Type on top of GNAT implementation.
>>>
>>> For stream I/O everything is here. Root_Stream_Type is tagged.
>>>
>>> type Null_Stream_Type is new Root_Stream_Type with null record;
>>> overriding procedure Read ...
>>> overriding procedure Write ...
>>>
>>> Null_Stream : Null_Stream_Type;
>>
>> You're completely missing the point -- it wasn't about a null-file, it
>> was about assuming all computers are *nix.
>
> Where was this assumed? /dev/null was an example of a file which could
> serve the purpose.
>

The assumption is implicit in your example:
__/dev/null__, see?