Trait BorrowMut

pub trait BorrowMut<Borrowed: ?Sized>: ~const Borrow<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);

Implementors