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// run-pass use std::ops::Deref; struct DerefArray<'a, T:'a> { inner: &'a [T] } impl<'a, T> Deref for DerefArray<'a, T> { type Target = &'a [T]; fn deref<'b>(&'b self) -> &'b &'a [T] { &self.inner } } pub fn main() { let a = &[1, 2, 3]; assert_eq!(DerefArray {inner: a}[1], 2); }