Denis Koroskin <2kor...@gmail.com> wrote:

Since many people think that non-nullable references can be implemented as a library and thus don't belong to core language, I've decided to show that it is in fact impossible to do so.

How do you enforce the following behavior:
[snip]

Without support of these use-cases NonNull!(T) is useless.

There can be other examples, but I think these are enough to prove that non-nullable references can not be implemented in library.

Indeed. There is also the arrays I've mentioned before, and as you
mention here, fields of classes and structs. Good catch.

--
Simen

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