From: Peter Dimov (pdimov_at_[hidden])
Date: 2002-02-28 07:14:09
From: "David Abrahams" <david.abrahams_at_[hidden]>
> > The Attributes object is typically the name of the Value, i.e. (real
code)
> >
> > template<class W, class T, class A> void write(W & w, math::point2<T>
> const
> > & p, A const & a, int)
> > {
> > begin_struct(w, a & type_descriptor(p));
> > write(w, p[0], "x", 0);
> > write(w, p[1], "y", 0);
> > end_struct(w, a & type_descriptor(p));
> > }
>
> If you're willing to require a default constructor, shouldn't you also
find
> a way to describe the type once so you don't have to code a reader and a
> writer that look nearly identical?
Having to code three nearly identical serialization helpers is certainly a
bit annoying, but not _that_ annoying so I haven't been forced to come up
with solution yet.
Jens' describe() scheme is fine, but it doesn't extend to attributes well,
and doesn't handle versioning (it makes things assymetrical.)