Agreed. As nice as clap is, it’s not a combinator. Parser combinators have a the really nice feature of sharing the same “shape” as the data they parse, which makes them trivial to generate from a schema … or to just use them to represent your schema in the first place ;) .
This doesn’t represent the mutual exclusivity through the type system (which is what the article is all about).
I love clap and I use it a lot, but the only way to represent the exclusivity through the type system in Rust is through an enum.
Agreed. As nice as clap is, it’s not a combinator. Parser combinators have a the really nice feature of sharing the same “shape” as the data they parse, which makes them trivial to generate from a schema … or to just use them to represent your schema in the first place ;) .