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| -rw-r--r-- | src/libcore/option.rs | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/libcore/option.rs b/src/libcore/option.rs index 607e16887a8..8871e1fa840 100644 --- a/src/libcore/option.rs +++ b/src/libcore/option.rs @@ -659,6 +659,16 @@ impl<T> Option<T> { impl<'a, T: Clone> Option<&'a T> { /// Maps an `Option<&T>` to an `Option<T>` by cloning the contents of the /// option. + /// + /// # Examples + /// + /// ``` + /// let x = 12; + /// let opt_x = Some(&x); + /// assert_eq!(opt_x, Some(&12)); + /// let cloned = opt_x.cloned(); + /// assert_eq!(cloned, Some(12)); + /// ``` #[stable(feature = "rust1", since = "1.0.0")] pub fn cloned(self) -> Option<T> { self.map(|t| t.clone()) |