Trait BorrowMut

1.6.0 (const: unstable) · Source

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

Expand description

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§

1.0.0 · Source

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

This item is validated for IEC 61508 (SIL 2) and ISO 26262 (ASIL B).

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);

Implementors§

Source §

impl BorrowMut<[u8]> for ByteStr

1.4.0 (const: unstable) · Source§

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

1.0.0 (const: unstable) · Source§

impl<T: ?Sized> BorrowMut<T> for &mut T