Re: NULL indicator in Variant

[Robert Jacques]

On Thu, 27 Oct 2011 09:12:26 -0400, Steve Teale <steve.te...@britseyeview.com> 
wrote:

How big a deal would it be to add a NULL indicator to the VariantN struct.

I use the term NULL as opposed to null deliberately. Variant already
provides the hasValue() method, which can serve as a null indicator. But
in using it as a parameter in database modules, it would be useful to be
able to give a Variant instance a type, as in v = "", but also to set it
explicitly as NULL with setNull() or whatever.

Could this fly without breaking existing code?

Steve

Any reason making a custom NULL type wouldn't work? i.e:

struct NULL {}

Variant var = NULL;

assert(var.type == typeof(NULL));