From cf4864a7a580fcb957c44c8cc64ac410dee6a694 Mon Sep 17 00:00:00 2001
From: Utkarsh Kukreti <utkarshkukreti@gmail.com>
Date: Sun, 1 Jun 2014 01:20:52 +0530
Subject: [PATCH] Fix docs for `core::result::Result::map`.

`reader.read_line()` includes trailing newline char, which makes
`from_str` always return `None`.
---
 src/libcore/result.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/libcore/result.rs b/src/libcore/result.rs
index f3ec95d958247..7c178d295dd96 100644
--- a/src/libcore/result.rs
+++ b/src/libcore/result.rs
@@ -432,11 +432,13 @@ impl<T, E> Result<T, E> {
     ///     let line: IoResult<String> = reader.read_line();
     ///     // Convert the string line to a number using `map` and `from_str`
     ///     let val: IoResult<int> = line.map(|line| {
-    ///         from_str::<int>(line.as_slice()).unwrap_or(0)
+    ///         from_str::<int>(line.as_slice().trim_right()).unwrap_or(0)
     ///     });
     ///     // Add the value if there were no errors, otherwise add 0
     ///     sum += val.ok().unwrap_or(0);
     /// }
+    ///
+    /// assert!(sum == 10);
     /// ~~~
     #[inline]
     pub fn map<U>(self, op: |T| -> U) -> Result<U,E> {