feat: impl Iterator for errors #120
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fixes #139 ast.errors() now return an `Iter<'_, Error>` which allows us to iterate, but also check for the `len()`. It should allow us to use `is_empty()` as well eventually, if / when rust-lang/rust#35428 lands.
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fixes #119
ast.errors() now return an
Iter<'_, crate::Error>which allows us to iterate, but also check for thelen()(through ExactSizeIterator). It should allow us to useis_empty()as well eventually, if / when rust-lang/rust#35428 lands.I wish we could use
is_empty(), the ergonomics feel a bit clunky without it. I would totally understand if we decided not to return an impl Iterator, or something else for this reason.