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

    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

ⓘImportant traits for &'a mut I

### Important traits for &'a mut I

`impl<'a, I> Iterator for &'a mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W`

### `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);Run

## Implementors

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

- `impl<'a, T> BorrowMut<T> for &'a mut T where T: ?Sized,` | [src]

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

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

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

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

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

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

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

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

- `impl<T> BorrowMut<T> for Box<T> where T: ?Sized,` | [src]

- `impl<T> BorrowMut<[T]> for Vec<T>` | [src]

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