is None or == None ?

[Alf P. Steinbach]

* Hrvoje Niksic:
> "Alf P. Steinbach" <alfps at start.no> writes:
> 
>> Speedup would likely be more realistic with normal implementation (not
>> fiddling with bit-fields and stuff)
> 
> I'm not sure I understand this.  How would you implement tagged integers
> without encoding type information in bits of the pointer value?

A normal tag field, as illustrated in code earlier in the thread.


Cheers & hth.,

- Alf