OpenE2K
/
rust
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Rollup merge of #38090 - GuillaumeGomez:option_doc, r=frewsxcv 

Add cloned example for Option

r? @frewsxcv
This commit is contained in:
Corey Farwell 2016-12-03 15:39:53 -05:00 committed by GitHub
parent d0e57b19cf 8e6ae19bb5
commit 6c327adca2
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
src/libcore/option.rs
View File

@ -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())