From: Victor Porton <porton@narod.ru>
Subject: Comparing version numbers
Date: Mon, 13 Nov 2017 04:39:11 +0200
Date: 2017-11-13T04:39:11+02:00 [thread overview]
Message-ID: <oub0kd$1a6r$1@gioia.aioe.org> (raw)
Not sure if it is quite on-topic, because it is more about general
programming ideas rather than about Ada. (However, a solution in Python or
Ruby or JavaScript would more likely used regexps than Ada.)
Suppose I have two version numbers of a software. I need to check which of
the two is greater.
Lexical order string comparison does not work:
"2.3" vs "11.4".
I could split it by "." and compare the numbers. But a component of a
version numbers may be nonnumeric like:
"1.2beta".
What to do?
It should work for example for all Debian packages containing interpreters
(for example, "2.7" for "python" package).
--
Victor Porton - http://portonvictor.org
next reply other threads:[~2017-11-13 2:39 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-13 2:39 Victor Porton [this message]
2017-11-13 5:15 ` Comparing version numbers J-P. Rosen
2017-11-13 8:04 ` briot.emmanuel
2017-11-13 11:11 ` Simon Wright
2017-11-13 21:30 ` briot.emmanuel
2017-11-13 8:10 ` Dmitry A. Kazakov
2017-11-13 15:56 ` Victor Porton
2017-11-13 17:22 ` Dmitry A. Kazakov
2017-11-13 18:54 ` Victor Porton
2017-11-13 20:25 ` Dmitry A. Kazakov
2017-11-16 15:33 ` Robert Eachus
2017-11-17 14:45 ` Shark8
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