Add #[non_exhaustive]
documentation to TRPL.
#1955
Closed
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This PR adds documentation for RFC 2008 (tracking issue rust-lang/rust#44109) to the reference. This feature is not yet stabilized, so this shouldn't be merged until that happens. This won't pass CI as the code examples use
#[non_exhaustive]
.I wasn't at all sure where to include documentation about this feature or how much to include. It requires some about of knowledge of structs, enums, privacy, external crates and pattern matching. I'm more than happy to move where it is and re-write parts that don't fit with the rest of the book, I tried to keep a consistent voice and style with the surrounding chapters.