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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Your wish list for Ada 202X
Date: Thu, 24 Apr 2014 18:19:28 +0200
Organization: cbb software GmbH
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Date: 2014-04-24T18:19:28+02:00
List-Id: <comp.lang.ada>

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. 

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de