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-rw-r--r--src/libcore/iter.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libcore/iter.rs b/src/libcore/iter.rs
index 299864e3b3d..c5e0966720f 100644
--- a/src/libcore/iter.rs
+++ b/src/libcore/iter.rs
@@ -350,7 +350,7 @@ pub trait IteratorExt: Iterator + Sized {
     ///
     /// ```
     /// let xs = [100, 200, 300];
-    /// let mut it = xs.iter().map(|x| *x).peekable();
+    /// let mut it = xs.iter().cloned().peekable();
     /// assert_eq!(*it.peek().unwrap(), 100);
     /// assert_eq!(it.next().unwrap(), 100);
     /// assert_eq!(it.next().unwrap(), 200);