null and type safety

[bearophile]

Andrei Alexandrescu:
> Null checks are easy and cheap to check for deterministically.

I think some languages add something to help that because:
- Sometimes you may forget to add those checks manually if you ned.
- If you don't need to put those checks the code results a little shorter and cleaner. Some kind of programmers like this. C++ programmers probably care less of this.

Bye,
bearophile