# 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.

Similar to `Borrow`, but for mutable borrows.

## Required Methods

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

Mutably borrows from an owned value.

# Examples

fn main() { 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); }

    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);

## Implementors

- `impl<T> BorrowMut<T> for T where T: ?Sized`
- `impl<'a, T> BorrowMut<T> for &'a mut T where T: ?Sized`
- `impl<T> BorrowMut<[T]> for [T; 0]`
- `impl<T> BorrowMut<[T]> for [T; 1]`
- `impl<T> BorrowMut<[T]> for [T; 2]`
- `impl<T> BorrowMut<[T]> for [T; 3]`
- `impl<T> BorrowMut<[T]> for [T; 4]`
- `impl<T> BorrowMut<[T]> for [T; 5]`
- `impl<T> BorrowMut<[T]> for [T; 6]`
- `impl<T> BorrowMut<[T]> for [T; 7]`
- `impl<T> BorrowMut<[T]> for [T; 8]`
- `impl<T> BorrowMut<[T]> for [T; 9]`
- `impl<T> BorrowMut<[T]> for [T; 10]`
- `impl<T> BorrowMut<[T]> for [T; 11]`
- `impl<T> BorrowMut<[T]> for [T; 12]`
- `impl<T> BorrowMut<[T]> for [T; 13]`
- `impl<T> BorrowMut<[T]> for [T; 14]`
- `impl<T> BorrowMut<[T]> for [T; 15]`
- `impl<T> BorrowMut<[T]> for [T; 16]`
- `impl<T> BorrowMut<[T]> for [T; 17]`
- `impl<T> BorrowMut<[T]> for [T; 18]`
- `impl<T> BorrowMut<[T]> for [T; 19]`
- `impl<T> BorrowMut<[T]> for [T; 20]`
- `impl<T> BorrowMut<[T]> for [T; 21]`
- `impl<T> BorrowMut<[T]> for [T; 22]`
- `impl<T> BorrowMut<[T]> for [T; 23]`
- `impl<T> BorrowMut<[T]> for [T; 24]`
- `impl<T> BorrowMut<[T]> for [T; 25]`
- `impl<T> BorrowMut<[T]> for [T; 26]`
- `impl<T> BorrowMut<[T]> for [T; 27]`
- `impl<T> BorrowMut<[T]> for [T; 28]`
- `impl<T> BorrowMut<[T]> for [T; 29]`
- `impl<T> BorrowMut<[T]> for [T; 30]`
- `impl<T> BorrowMut<[T]> for [T; 31]`
- `impl<T> BorrowMut<[T]> for [T; 32]`
- `impl<T> BorrowMut<T> for Box<T> where T: ?Sized`
- `impl<T> BorrowMut<[T]> for Vec<T>`

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