null and initialized string comparisons

[Adam D. Ruppe]

On Wednesday, 17 February 2021 at 20:48:22 UTC, Martin wrote:
> is this how it supposed to be? (https://run.dlang.io/is/7B4irm)

== compares contents. Both null and "" have empty contents and 
are interchangable for operators that work on contents.

The assert just looks at the pointer, not contents. The `is` 
operator also looks at pointer (and length).