Re: xor

[Michael Moeller <mic2@t-online.de>]

On Wed, 28 Mar 2012, Dmitry A. Kazakov wrote:

> On Wed, 28 Mar 2012 17:16:36 +0100, Michael Moeller wrote:
>
>> On Wed, 28 Mar 2012, Dmitry A. Kazakov wrote:
>>
>>> On Wed, 28 Mar 2012 13:18:57 +0100, Michael Moeller wrote:
>>
>>> P.S. I don't understand your problem. There are many ways to write files in
>>> Ada. None of them is any difficult, provided you know what are doing and
>>> the underlying OS supports things you request from it.
>>>
>> The degree of difficulty depends on your skills. From my point of view
>> SPARC assembly or Prolog are pretty easy too.
>
> Much to learn, while Ada I/O is just 3 calls:
>
> 1. Open file
> 2. Write data item (reiterated)
> 3. Close file.
>
> If any complexity is there, then it is in the semantics of I/O. And this is
> OS stuff unrelated to Ada.
>
> There are only four ways to a write binary file (more or less independent
> on each other):
>
> 1. Direct_IO (random access files);
> 2. Sequential_IO (sequential files);
> 3. Stream_IO (stream-oriented I/O on top of a file or a communication
> object);
> 4. Direct OS calls, calls to C run-time (or for that matter, calls to
> Prolog run-time if you know its calling conventions).
>
> If you are unsure, in most cases, you can safely ignore 1, 2 and 4.

I see. Alas, none of my books or manuals even mentions binary file I/O.
That's why I asked for the very details.
Thanks anyway.

Michael