diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/doc/tutorial.md | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/doc/tutorial.md b/src/doc/tutorial.md index c2469e0c171..3363f78ad0a 100644 --- a/src/doc/tutorial.md +++ b/src/doc/tutorial.md @@ -1468,14 +1468,14 @@ For a more in-depth explanation of references and lifetimes, read the ## Freezing -Lending an immutable pointer to an object freezes it and prevents mutation. +Lending an &-pointer to an object freezes it and prevents mutation—even if the object was declared as `mut`. `Freeze` objects have freezing enforced statically at compile-time. An example of a non-`Freeze` type is [`RefCell<T>`][refcell]. ~~~~ let mut x = 5; { - let y = &x; // `x` is now frozen, it cannot be modified + let y = &x; // `x` is now frozen. It cannot be modified or re-assigned. } // `x` is now unfrozen again # x = 3; @@ -2021,8 +2021,8 @@ C++ templates. ## Traits -Within a generic function -- that is, a function parameterized by a -type parameter, say, `T` -- the operations we can do on arguments of +Within a generic function—that is, a function parameterized by a +type parameter, say, `T`—the operations we can do on arguments of type `T` are quite limited. After all, since we don't know what type `T` will be instantiated with, we can't safely modify or query values of type `T`. This is where _traits_ come into play. Traits are Rust's |