Re: [boost] Re: some thoughts about serialisation

From: Dave Harris (brangdon_at_[hidden])
Date: 2003-01-17 05:31:39

In-Reply-To: <5.2.0.9.2.20030114150350.024b8040_at_[hidden]>
On Tue, 14 Jan 2003 15:05:55 -0700 Greg Colvin (Gregory.Colvin_at_[hidden]) 
wrote:
> >> > How do you see archive versioning being done? For example,
> >> > suppose field TOTAL is a double in version 1 and a
> >> > fixed-point user-defined type in version 2.
> 
> One answer is "don't do that."  Add a new field which can
> be initialized from the old one, and stop using the old one.

Adding a new field, with a different name, is what I suggested in the 
email you're commenting to. Removing the old field isn't an option if it 
is needed, either for loading old archives, or for interfacing to old 
Python code (or whatever it is the reflection stuff is used for).

-- Dave Harris