From 325e09e952264ad5b1bccbeb5774446f3c601957 Mon Sep 17 00:00:00 2001
From: Corey Farwell <coreyf@rwell.org>
Date: Tue, 28 Jun 2016 08:22:34 -0400
Subject: [PATCH] Add doc example for `std::io::sink`.

---
 src/libstd/io/util.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/libstd/io/util.rs b/src/libstd/io/util.rs
index 2815c0163d68a..e5d6cb2b34e60 100644
--- a/src/libstd/io/util.rs
+++ b/src/libstd/io/util.rs
@@ -139,6 +139,16 @@ pub struct Sink { _priv: () }
 ///
 /// All calls to `write` on the returned instance will return `Ok(buf.len())`
 /// and the contents of the buffer will not be inspected.
+///
+/// # Examples
+///
+/// ```rust
+/// use std::io::{self, Write};
+///
+/// let mut buffer = vec![1, 2, 3, 5, 8];
+/// let num_bytes = io::sink().write(&mut buffer).unwrap();
+/// assert_eq!(num_bytes, 5);
+/// ```
 #[stable(feature = "rust1", since = "1.0.0")]
 pub fn sink() -> Sink { Sink { _priv: () } }