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by kd5bjo
643 days ago
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Because `OptionIterator` implements the `Iterator` trait, the function signature can be simplified to return just `impl Iterator<…>` like the original version did, leaving the additional type as an implementation detail. Also, a similar solution is provided by the `either` crate [1], where the function body can return `Either::Left(std::iter::empty())` in one case and `Either::Right(…)` in the other, also hiding all of this behind an `impl Iterator<…>` return type. [1] https://docs.rs/either/latest/either/enum.Either.html |
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