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Talk:Execute a Markov algorithm: Difference between revisions
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:::::Hi Donal, on some operating systems, like flavours of Unix, stipluating the data source to be a file makes it very flexible, as most things are made to look like a file by the OS: ftp, HTTP, pipes, ... if your program aaccepts files, then all is well. This may not be the case in other operating systems. I think it is OK to treat the source of the data as a separate concern that is not part of the task. --[[User:Paddy3118|Paddy3118]] 23:12, 20 December 2009 (UTC)
:::::: I think I'm going to hold out for at least the ruleset coming from another file. The general concept carries over pretty well into all other operating environments that I'm aware of, and even when the environment doesn't support files ''per se'', there's something that can be used instead; requiring that all information be embedded into the source code of the program isn't exactly practical on any of them. (The separation is also very convenient when writing rulesets; it prevents silly accidents in editing and keeps the language's string syntax out of the way.) –[[User:Dkf|Donal Fellows]] 07:23, 21 December 2009 (UTC)
::::::: I would rather we left where the rulesets and example text origins unspecified, as a quite legitimate way of coding this in Python is as a module for incorporation into a larger program. <br>In this case, we might arrange for the module to test itself when run stand-alone and provide the function when imported. Even reading the rulesets is tertiary to the main aims of performing the function, and adding some tests. --[[User:Paddy3118|Paddy3118]] 08:55, 21 December 2009 (UTC)
:::The old Unix way would be to have a couple of flags -f rule_file, and optionally -o output_file. The input file would be any additional files specified on the command line or, if none were specified, from stdin. The output would be to stdout unles the -o option was specified.
:::examples:
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