[boost] Re: serialization: automatic undo/redo

From: Robert Ramey (ramey_at_[hidden])
Date: 2004-01-03 11:58:48

David Abrahams wrote

>Also, as long as you're going to save the unmodified data before
>beginning an operation, you might as well use the undo data for
>exception recovery.  In that case, you probably want a system for
>restoring the data which can't throw an exception.  Deserialization is
>unlikely to fit the bill.

The serialization package under discussion only throws an
exception if the archive has been corrupted some way.  So
any exception during de-serialization would either be a
non-recoverable programmer error or an exception invoked
by some other system such as I/o which might be recoverable.

I don't see why the deserialization process can't throw an
an exception an if that exception is something recoverable
appropriate action can't be taken.  

That is, I don't see that de-serialization raises any issues
regarding exceptions that are not raised by exceptions
generally.

Robert Ramey