Trait std::borrow::BorrowMut1.0.0 [] [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

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