# 1.0.0[−][src]Trait alloc::borrow::BorrowMut

    pub trait BorrowMut<Borrowed>: Borrow<Borrowed> where
        Borrowed: ?Sized, {
        fn borrow_mut(&mut self) -> &mut Borrowed;
    }

A trait for mutably borrowing data.

As a companion to `Borrow<T>` this trait allows a type to borrow as an underlying type by providing a mutable reference. See `Borrow<T>` for more information on borrowing as another type.

## Required methods

### `fn borrow_mut(&mut self) -> &mut Borrowed`

Mutably borrows from an owned value.

# Examples

    use std::borrow::BorrowMut;

    fn check<T: BorrowMut<[i32]>>(mut v: T) {
        assert_eq!(&mut [1, 2, 3], v.borrow_mut());
    }

    let v = vec![1, 2, 3];

    check(v);

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## Implementors

### `impl BorrowMut<str> for String`[src]

#### `fn borrow_mut(&mut self) -> &mut str`[src]

### `impl<'_, T> BorrowMut<T> for &'_ mut T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut self) -> &mut T`[src]

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `fn borrow_mut(&mut self) -> &mut T`[src]

### `impl<T> BorrowMut<[T]> for Vec<T>`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 0]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 1]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 2]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 3]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 4]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 5]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 6]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 7]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 8]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 9]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 10]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 11]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 12]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 13]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 14]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 15]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 16]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 17]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 18]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 19]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 20]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 21]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 22]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 23]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 24]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 25]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 26]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 27]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 28]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 29]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 30]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 31]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T> BorrowMut<[T]> for [T; 32]`[src]

#### `fn borrow_mut(&mut self) -> &mut [T]`[src]

### `impl<T: ?Sized> BorrowMut<T> for Box<T>`[src]

#### `fn borrow_mut(&mut self) -> &mut T`[src]

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