Sendable gets talked about a lot. And while it is a critical aspect of Swift concurrency, I think non-Sendable types are very interesting and just as important. They are often seen as a problem when facing concurrency issues. But, non-Sendable types can actually sometimes be a perfect solution.
Wrote this up in kind of hurry, but people seem to like it. Thought I鈥檇 throw it up over here.