Re: Clear Screen

["Marin David Condic, 561.796.8997, M/S 731-93" <condicma@PWFL.COM>]

"Robert I. Eachus" <eachus@SPECTRE.MITRE.ORG> writes:
>   It is very conceivable to me that say Interrupt Entries will be
>supported by no validated implementations when the next major revision
>occurs, and that they would be removed on that basis.  (It is also
>conceivable that some of the real-time standards and groups will keep
>it viable.)  Many other chapter 13 features in Annex J can be easily
>converted to legal Ada 95 constructs based on syntax alone.  Those
>cases can be moved to a (virtual) preprocessor.
>
    Would one practical solution be to throw the features out, but
    insist that compilers maintain an "Ada95 Switch" which makes them
    available for the people who still might need upward
    compatibility? Then after "Ada0x" is superseded by "Ada1x", the
    "Ada95 Switch" becomes invalid - thus providing users plenty of
    time to migrate their code. The advantage is that the features
    aren't really there for the programmers building "Ada0x" code, but
    you haven't hurt those still maintaining Ada95 code.

    I'm pretty sure that Gnat has an "Ada83 Switch" (never had cause
    to use it) which restricts it to Ada83 for those who might have an
    upward compatibility problem. Seems like this is a useful
    compromise.

    MDC

Marin David Condic, Senior Computer Engineer    ATT:        561.796.8997
M/S 731-96                                      Technet:    796.8997
Pratt & Whitney, GESP                           Fax:        561.796.4669
P.O. Box 109600                                 Internet:   CONDICMA@PWFL.COM
West Palm Beach, FL 33410-9600                  Internet:   CONDIC@FLINET.COM
===============================================================================
    "Airplanes are interesting toys but of no military value."

        --  Marechal Ferdinand Foch, Professor of Strategy, Ecole Superieure
            de Guerre.
===============================================================================