Trait std::borrow::BorrowMut [−] [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