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PSPP-BUG: [patch #5209] Proposed casefile changes

From: John Darrington
Subject: PSPP-BUG: [patch #5209] Proposed casefile changes
Date: Fri, 14 Jul 2006 07:01:34 +0800
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.8) Gecko/20050513 Debian/1.7.8-1

Follow-up Comment #6, patch #5209 (project pspp):

No worries.  I'll work on it some more and send it back for another round

Just with regard to the cast macros: They're mainly useful for programmers
who might attempt to cast a fastfile to a flexifile or vici-versa.  Whilst I
agree they might be a bit of an overkill at present, I can forsee a time
where there might be more than two classes of casefile (for example, we might
want one whose cases are stored on a remote server), and several layers of
derivation.  In this scenario, it becomes difficult to remember which
casefiles can be casted to which others.  The run-time cast check I
implemented was inspired by the system that Gtk+ etc. uses, which has saved
my bacon many times.

There's some refactoring which I think can be done yet, which I'll discuss


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