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| author | Guillaume Gomez <guillaume1.gomez@gmail.com> | 2016-04-17 18:50:49 +0200 |
|---|---|---|
| committer | Guillaume Gomez <guillaume1.gomez@gmail.com> | 2016-04-17 18:50:49 +0200 |
| commit | 4d0b0e975b30d067e2347b74ea19f49c7f04fbda (patch) | |
| tree | 5cf243b932151b18b41fe1451c1e21ce088741fc | |
| parent | a6264002637f60322d17329eaf4a25b9abe2c638 (diff) | |
| download | rust-4d0b0e975b30d067e2347b74ea19f49c7f04fbda.tar.gz rust-4d0b0e975b30d067e2347b74ea19f49c7f04fbda.zip | |
Improve as_mut ptr method example
| -rw-r--r-- | src/libcore/ptr.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/libcore/ptr.rs b/src/libcore/ptr.rs index a3c7ab481a7..8b3a14b24df 100644 --- a/src/libcore/ptr.rs +++ b/src/libcore/ptr.rs @@ -459,6 +459,9 @@ impl<T: ?Sized> *mut T { /// ``` /// let mut s = [1, 2, 3]; /// let ptr: *mut u32 = s.as_mut_ptr(); + /// let first_value = unsafe { ptr.as_mut().unwrap() }; + /// *first_value = 4; + /// println!("{:?}", s); // It'll print: "[4, 2, 3]". /// ``` #[stable(feature = "ptr_as_ref", since = "1.9.0")] #[inline] |