[GAP] old attribute

[Pat Rogers]

On 10/28/2011 10:41 AM, Robert Dewar wrote:
> Interesting, obviously this cannot be done automatically since what
> a "deep copy" means is very data structure dependent, I guess what
> you would need is a user defined attribute function something like
>
>     for typ'Old use subprogram
>
> where subprogram has the profile
>
>     function typ'Old (Arg : typ) return typ;
>
> Definitely an interesting suggestion.

This would be very convenient for state restoration mechanisms, for the 
sake of software fault tolerance techniques.

Pat

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Patrick Rogers, PhD
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