From: bobduff@world.std.com (Robert A Duff)
Subject: Re: Converting C++ class to Ada
Date: 1996/12/19
Date: 1996-12-19T00:00:00+00:00 [thread overview]
Message-ID: <E2o1vz.76y@world.std.com> (raw)
In-Reply-To: JSA.96Dec18184555@alexandria
In article <JSA.96Dec18184555@alexandria>,
Jon S Anthony <jsa@alexandria> wrote:
>> Also, if I wanted to make sure that "null" wasn't used as one of the
>> discriminants, would I have to use "access Motor.Object_Type" rather
>> than the declared access type?
>
>Neither will prevent that.
A value of an anonymous access type can never be null. (This includes
both access parameters and access discriminants.) Run-time checks
ensure this.
- Bob
next prev parent reply other threads:[~1996-12-19 0:00 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
1996-12-10 0:00 Converting C++ class to Ada Ken Garlington
1996-12-11 0:00 ` Larry Kilgallen
1996-12-11 0:00 ` Stephen Leake
1996-12-13 0:00 ` Stephen Leake
1996-12-11 0:00 ` Norman H. Cohen
1996-12-12 0:00 ` Jon S Anthony
1996-12-11 0:00 ` Jon S Anthony
1996-12-12 0:00 ` Ken Garlington
1996-12-18 0:00 ` Jon S Anthony
1996-12-18 0:00 ` Matthew Heaney
1996-12-19 0:00 ` Robert A Duff [this message]
1996-12-20 0:00 ` Stephen Leake
1996-12-20 0:00 ` Robert A Duff
1996-12-20 0:00 ` Norman H. Cohen
1996-12-20 0:00 ` Jon S Anthony
1996-12-20 0:00 ` Mitch Gart
1996-12-21 0:00 ` Jon S Anthony
1996-12-12 0:00 ` Dale Stanbrough
1996-12-12 0:00 ` Constructors for Ada (was: Converting C++ class to Ada) Matthew Heaney
1996-12-13 0:00 ` Norman H. Cohen
1996-12-13 0:00 ` Matthew Heaney
1996-12-17 0:00 ` Robert I. Eachus
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