From: dewar@cs.nyu.edu (Robert Dewar)
Subject: Re: Flags in Ada?
Date: 27 Oct 1994 09:47:14 -0400
Date: 1994-10-27T09:47:14-04:00 [thread overview]
Message-ID: <38ob12$7po@gnat.cs.nyu.edu> (raw)
In-Reply-To: 38nch8$bdv@news.delphi.com
I certainly agree that normally a record is a better representation of a
set of heterogenous flags. The justifications for using an array are to
take advantage of the boolean array operators, if the flags are really
homogenous, or if indexing will be useful (again implying homogenous
flags).
Note that in Ada 9X, yet a third possibility is to use unsigned (modular)
numbers, which also have logical operations defined, with constant values
for the bits. This of course is even more low-level (and C-like, although
in C, bit specs are being more widely used these days), but may be
appropriate for algorithms where arithmetic and logical operations are
intermixed in wierd ways.
next prev parent reply other threads:[~1994-10-27 13:47 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
1994-10-27 5:06 Flags in Ada? tmoran
1994-10-27 13:47 ` Robert Dewar [this message]
1994-10-28 2:41 ` Tucker Taft
1994-10-30 13:31 ` Robert Dewar
-- strict thread matches above, loose matches on Subject: below --
1994-10-28 3:59 tmoran
1994-10-28 13:43 ` Robert Dewar
1994-10-31 14:19 ` Norman H. Cohen
1994-11-02 14:06 ` Mats Weber
1994-11-03 23:08 ` Robert Dewar
1994-11-03 11:26 ` Robert Dewar
1994-10-27 5:05 tmoran
1994-10-27 13:29 ` Robert Dewar
1994-10-27 17:15 ` Norman H. Cohen
1994-10-28 3:51 ` Robert Dewar
1994-10-25 16:22 tmoran
1994-10-25 10:36 Andre Spiegel
1994-10-25 10:07 ` David Emery
1994-10-25 16:19 ` Norman H. Cohen
1994-10-26 3:19 ` tmoran
1994-10-26 9:59 ` David Emery
1994-10-26 22:32 ` Robert Dewar
1994-10-27 13:24 ` Norman H. Cohen
1994-10-27 15:15 ` John Volan
1994-10-31 9:29 ` David Emery
1994-10-27 22:34 ` Henry G. Baker
1994-10-26 14:33 ` Robert Dewar
1994-10-26 17:43 ` Norman H. Cohen
1994-10-26 15:54 ` Andre Spiegel
1994-10-26 0:36 ` Dale Stanbrough
1994-10-26 11:01 ` Robert Dewar
1994-10-27 8:23 ` Henri Altarac
1994-10-27 23:00 ` Robert Dewar
1994-10-31 9:32 ` David Emery
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