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It's interesting how Prolog has no concept of 'null' as such; just fresh variables whose value we don't know (yet). No more null pointer exceptions!
by hjek 7y ago
It's interesting how Prolog has no concept of 'null' as such; just fresh variables whose value we don't know (yet).
No more null pointer exceptions!
- harperlee 7y agoIn fact, in some domains (such as SQL), ‘null’ stands for values we dont know: https://modern-sql.com/concept/three-valued-logic https://modern-sql.com/concept/three-valued-logic
- hjek 7y agoYes, looks like SQL got that right as well. I think Prolog is the answer to the question: What if the full stack was relational; not just the database?