Update Duration::from_secs doc example to show underlying values.

diff --git a/src/libstd/time/duration.rs b/src/libstd/time/duration.rs
index af7eaeb3106b2e73151cbd08a108fd44f3e5b8a7..bd8c1fac2dba9b4a18d994d6d42f737b4162456a 100644 (file)
--- a/src/libstd/time/duration.rs
+++ b/src/libstd/time/duration.rs
@@ -84,7 +84,10 @@ pub fn new(secs: u64, nanos: u32) -> Duration {
     /// ```
     /// use std::time::Duration;
     ///
-    /// let five_seconds = Duration::from_secs(5);
+    /// let duration = Duration::from_secs(5);
+    ///
+    /// assert_eq!(5, duration.as_secs());
+    /// assert_eq!(0, duration.subsec_nanos());
     /// ```
     #[stable(feature = "duration", since = "1.3.0")]
     #[inline]