Re: RFC 38 (v1) Standardise Handling Of Abnormal Numbers

[Ken Fox]

Tom Hughes wrote:
> In message <[EMAIL PROTECTED]>
>           Chaim Frenkel <[EMAIL PROTECTED]> wrote:
> 
> > I'd like to be able to mimic what the rules for nulls are in databases.
> 
> >       NULL == NULL : false
> 
> Always true surely?

NULL to a database means unknown not undefined or unitialized. Perhaps
the internals could have both unknown and undefined types? We'll have to
figure out the system for doing polymorphic stuff like + on two
different types. Is this a vtable operation? If so, which vtable does
the work? The first ala self and smalltalk? If it isn't a vtable
operation then do we have to follow special protocols to talk to the
adder?

- Ken