From a9a2a319afbeb7e2a54f343a9360bd9bc4863b4f Mon Sep 17 00:00:00 2001
From: dylan_DPC <dylan.dpc@gmail.com>
Date: Thu, 26 Mar 2020 23:18:37 +0100
Subject: [PATCH] fix docs

---
 src/libcore/iter/traits/iterator.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/libcore/iter/traits/iterator.rs b/src/libcore/iter/traits/iterator.rs
index c066d535f24..853059f98a6 100644
--- a/src/libcore/iter/traits/iterator.rs
+++ b/src/libcore/iter/traits/iterator.rs
@@ -2015,6 +2015,9 @@ fn ok<B, T>(mut f: impl FnMut(B, T) -> B) -> impl FnMut(B, T) -> Result<B, !> {
     /// Find the maximum value:
     ///
     /// ```
+    /// #![feature(iterator_fold_self)]
+    /// use std::cmp::Ordering;
+    ///
     /// fn find_max<I>(iter: I) -> Option<I::Item>
     ///     where I: Iterator,
     ///           I::Item: Ord,
@@ -2027,9 +2030,9 @@ fn ok<B, T>(mut f: impl FnMut(B, T) -> B) -> impl FnMut(B, T) -> Result<B, !> {
     ///     })
     /// }
     /// let a = [10, 20, 5, -23, 0];
-    /// let b = [];
+    /// let b: [u32; 0] = [];
     ///
-    /// assert_eq!(find_max(a.iter()), Some(20));
+    /// assert_eq!(find_max(a.iter()), Some(&20));
     /// assert_eq!(find_max(b.iter()), None);
     /// ```
     #[inline]