From: Kilgallen@SpamCop.net (Larry Kilgallen)
Subject: Re: subtype of enumeration type
Date: 20 Mar 2006 08:26:44 -0600
Date: 2006-03-20T08:26:44-06:00 [thread overview]
Message-ID: <gmiRaAP4tbKY@eisner.encompasserve.org> (raw)
In-Reply-To: dvmas1$kj8$1@sunnews.cern.ch
In article <dvmas1$kj8$1@sunnews.cern.ch>, Maciej Sobczak <no.spam@no.spam.com> writes:
> Consider this:
>
> type Day is (Mon, Tue, Wed, Thu, Fri, Sat, Sun);
>
> and the following standard example:
>
> subtype Weekday is Day range Mon .. Fri;
>
> Now imagine that in some country children don't have to go to school on
> Wednesdays, they go there only Monday, Tuesday, Thursday and Friday.
>
> I want to say it in Ada.
>
> subtype Schoolday is Day <what goes here?>;
type Day is (Mon, Tue, Thu, Fri, Wed, Sat, Sun);
subtype Weekday is Day range Mon .. Wed;
subtype Schoolday is Day range Mon .. Fri;
Some additional logic may also be in order if you print some
some human-readable output based on an iteration over the range
of Day or Weekday, such as by creating an index array Days_in_Order.
next prev parent reply other threads:[~2006-03-20 14:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-20 13:31 subtype of enumeration type Maciej Sobczak
2006-03-20 14:26 ` Larry Kilgallen [this message]
2006-03-20 15:18 ` Maciej Sobczak
2006-03-20 15:37 ` Robert A Duff
2006-03-20 20:29 ` Björn Persson
2006-03-20 21:41 ` Jeffrey R. Carter
2006-03-21 8:37 ` subtypes and preconditions (was: subtype of enumeration type) Peter Amey
2006-03-21 17:42 ` subtypes and preconditions Jeffrey R. Carter
2006-03-21 19:00 ` Georg Bauhaus
2006-03-22 1:54 ` Jeffrey R. Carter
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