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Do not use "bind" to refer to both referencing and to assignment #33007

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Apr 19, 2016
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Do not use "bind" to refer to both referencing and to assignment #33007

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8 changes: 3 additions & 5 deletions src/doc/book/mutability.md
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Expand Up @@ -24,18 +24,16 @@ changed from one `i32` to another.

[vb]: variable-bindings.html

If you want to change what the binding points to, you’ll need a [mutable reference][mr]:
You can also create a [reference][ref] to it, using `&x`, but if you want to use the reference to change it, you will need a mutable reference:

```rust
let mut x = 5;
let y = &mut x;
```

[mr]: references-and-borrowing.html
[ref]: references-and-borrowing.html

`y` is an immutable binding to a mutable reference, which means that you can’t
bind `y` to something else (`y = &mut z`), but you can mutate the thing that’s
bound to `y` (`*y = 5`). A subtle distinction.
`y` is an immutable binding to a mutable reference, which means that you can’t bind 'y' to something else (`y = &mut z`), but `y` can be used to bind `x` to something else (`*y = 5`). A subtle distinction.

Of course, if you need both:

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