User talk:Dmitry-kazakov: Difference between revisions
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(Portability of PPMs) |
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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. <BR> |
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. <BR> |
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Isn't it possible with this programming language ? [[User:Blue Prawn|Blue Prawn]] 11:28, 7 December 2008 (UTC) |
Isn't it possible with this programming language ? [[User:Blue Prawn|Blue Prawn]] 11:28, 7 December 2008 (UTC) |
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: 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. |
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: 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: |
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:* character is? (octet of bits) |
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:* line terminator in the file header is? (ASCII LF for example) |
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:* EOF is? (ASCII LF, NUL, nothing) |
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:And well, PPM isn't our fault... (:-)) --[[User:Dmitry-kazakov|Dmitry-kazakov]] 12:17, 7 December 2008 (UTC) |
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