User talk:Dmitry-kazakov

Language Table

I was thinking about adding a "parameter passing methods available" column to the big language table. If I do, it should probably have an informational article to go with it. Do you think you're up for it? --Mwn3d 03:30, 23 July 2008 (UTC)

I'll try. --Dmitry-kazakov 07:18, 23 July 2008 (UTC)


binary mode

About the problem you talk about on the ppm output article, I am used to see that it is possible to open a file in binary mode on your OS.
Isn't it possible with this programming language ? Blue Prawn 11:28, 7 December 2008 (UTC)

It is OS-specific too. In earlier times, when OS was an OS (:-)), there was RSX-11, for example. It didn't have text files in MS-DOS or UNIX sense. There were record files instead. Each line was stored into a record. The advantage was that a line could contain any characters and LF, CR or NUL had no special meaning.
I will rewrite Ada solution in order to make it more portable, but I am afraid the problem with it and other solutions as well will persist. Because if we used binary in the sense stream of characters, then we would have to specify a few more things to make it portable:
  • character is? (octet of bits)
  • line terminator in the file header is? (ASCII LF for example)
  • EOF is? (ASCII LF, NUL, nothing)
And well, PPM isn't our fault... (:-)) --Dmitry-kazakov 12:17, 7 December 2008 (UTC)

exception propagation in Ada.

In Ada's Rendezvous what do these lines do:

        exception
           when Out_Of_Ink =>
              null;
        end;

They look like they are masking/ignoring the Out_Of_Ink exception.

Whereas program appears to propagate Out_Of_Ink back to Mother_Goose. e.g.

                       requeue Backup.Print with abort;

Is that because of the with abort?

Also: when the task is requeued, does the Main printer suspend waiting for Backup to finish? (Or is the exception propagated directly back from Backup to Mother_Goose without passing through Main)

ThanX

NevilleDNZ 06:33, 19 February 2009 (UTC)

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