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

###

    pub trait BorrowMut<Borrowed>: Borrow<Borrowed> where
        Borrowed: ?Sized, {
        fn borrow_mut(&mut self) -> &mut BorrowedⓘNotable traits for &'_ mut Fimpl<'_, F> Future for &'_ mut F where
        F: Unpin + Future + ?Sized,     type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
        I: Iterator + ?Sized,     type Item = <I as Iterator>::Item;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W;
    }

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ⓘ

### Notable traits for &'_ mut F

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

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
Loading content...

## 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ⓘ

### Notable traits for &'_ mut F

`impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W`
`[src]

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

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

### Notable traits for &'_ [u8]

`impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]`
`[src]

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

#### `fn borrow_mut(&mut self) -> &mut Tⓘ

### Notable traits for &'_ mut F

`impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W`
`[src]

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

#### `fn borrow_mut(&mut self) -> &mut Tⓘ

### Notable traits for &'_ mut F

`impl<'_, F> Future for &'_ mut F where
F: Unpin + Future + ?Sized, type Output = <F as Future>::Output;impl<'_, I> Iterator for &'_ mut I where
I: Iterator + ?Sized, type Item = <I as Iterator>::Item;impl<R: Read + ?Sized, '_> Read for &'_ mut Rimpl<W: Write + ?Sized, '_> Write for &'_ mut W`
`[src]

### `impl<T, const N: usize> BorrowMut<[T]> for [T; N]`[src]

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

### Notable traits for &'_ [u8]

`impl<'_> Read for &'_ [u8]impl<'_> Write for &'_ mut [u8]`
`[src]

Loading content...