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

Rollup merge of #34621 - KaivoAnastetiks:fix/#33924, r=steveklabnik

Browse Source 
Clarifies the meaning of the external mutability.
This commit is contained in:
Steve Klabnik 2016-07-06 19:13:07 -04:00 committed by GitHub
commit 04130595cc
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
src/doc/book/mutability.md
View File

@ -62,8 +62,8 @@ Note that here, the `x` is mutable, but not the `y`.
# Interior vs. Exterior Mutability
However, when we say something is ‘immutable’ in Rust, that doesn’t mean that
it’s not able to be changed: we mean something has ‘exterior mutability’. Consider,
for example, [`Arc<T>`][arc]:
it’s not able to be changed: we are referring to its ‘exterior mutability’ that
in this case is immutable. Consider, for example, [`Arc<T>`][arc]:
```rust
use std::sync::Arc;