>>>>> "KF" == Ken Fox <[EMAIL PROTECTED]> writes:
KF> 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?
KF> NULL to a database means unknown not undefined or unitialized. Perhaps
KF> the internals could have both unknown and undefined types? We'll have to
KF> figure out the system for doing polymorphic stuff like + on two
KF> different types. Is this a vtable operation? If so, which vtable does
KF> the work? The first ala self and smalltalk? If it isn't a vtable
KF> operation then do we have to follow special protocols to talk to the
KF> adder?
What are the issues doing it through the vtbl of 'self'? Though if
the op does it, there would be a different op under the tristate pragma.
What do you mean by a special protocol?
<chaim>
--
Chaim Frenkel Nonlinear Knowledge, Inc.
[EMAIL PROTECTED] +1-718-236-0183
