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// run-pass
#![feature(type_alias_impl_trait)]
trait UnwrapItemsExt {
type Iter;
fn unwrap_items(self) -> Self::Iter;
}
impl<I, T, E> UnwrapItemsExt for I
where
I: Iterator<Item = Result<T, E>>,
E: std::fmt::Debug,
{
type Iter = impl Iterator<Item = T>;
fn unwrap_items(self) -> Self::Iter {
self.map(|x| x.unwrap())
}
}
fn main() {}
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