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use super::*; /// Option as a list. impl<T> ListFn for Option<T> { type Item = T; type End = Self; fn next(self) -> ListState<Self> { match self { Option::Some(first) => ListState::some(first, Option::None), Option::None => ListState::End(Option::None), } } } impl<T> ResultFn for Option<T> { type Result = (); fn result(self) {} }