I saw the debate on GitHub over
?= etc. being used for
nothing, and I thought, maybe a Spanish upsidedown question mark could be used? It’s generally easy to type (a single keystroke on the Mac, even without a Spanish keyboard, simply “option ?”, and probably similar on Windows).
It would be fairly easy to remember then,
? always deals with
nothingness (programmer’s null), and
¿ deals with
missingness (SQL null, 3VL).
Just a thought!