[rustc.git] / src / test / ui / type-alias-impl-trait / issue-58887.rs

// 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() {}
Commit	Line	Data
60c5eb7d XL	1	// run-pass
60c5eb7d XL	2
416331ca XL	3	#![feature(type_alias_impl_trait)]
	4
	5	trait UnwrapItemsExt {
	6	type Iter;
	7	fn unwrap_items(self) -> Self::Iter;
	8	}
	9
	10	impl<I, T, E> UnwrapItemsExt for I
	11	where
	12	I: Iterator<Item = Result<T, E>>,
	13	E: std::fmt::Debug,
	14	{
	15	type Iter = impl Iterator<Item = T>;
416331ca XL	16
416331ca XL	17	fn unwrap_items(self) -> Self::Iter {
416331ca XL	18	self.map(\|x\| x.unwrap())
	19	}
	20	}
	21
	22	fn main() {}