Trait std::borrow::BorrowMut

pub trait BorrowMut<Borrowed>: Borrow<Borrowed> where
    Borrowed: ?Sized, {
    fn borrow_mut(&mut self) -> &mut 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

Important traits for &'a mut I

impl<'a, I> Iterator for &'a mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;impl<'a, R: Read + ?Sized> Read for &'a mut Rimpl<'a, W: Write + ?Sized> Write for &'a mut W

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

• impl<T> BorrowMut<[T]> for [T; 23]

• impl<T> BorrowMut<[T]> for [T; 31]

• impl<T> BorrowMut<[T]> for [T; 8]

• impl<T> BorrowMut<[T]> for [T; 9]

• impl<T> BorrowMut<[T]> for [T; 0]

• impl<T> BorrowMut<[T]> for [T; 29]

• impl<T> BorrowMut<[T]> for [T; 5]

• impl<T> BorrowMut<[T]> for [T; 10]

• impl<T> BorrowMut<[T]> for [T; 17]

• impl<T> BorrowMut<[T]> for [T; 13]

• impl<T> BorrowMut<[T]> for [T; 28]

• impl<T> BorrowMut<[T]> for [T; 19]

• impl<T> BorrowMut<[T]> for [T; 2]

• impl<T> BorrowMut<[T]> for [T; 3]

• impl<T> BorrowMut<[T]> for [T; 21]

• impl<T> BorrowMut<[T]> for [T; 7]

• impl<T> BorrowMut<[T]> for [T; 6]

• impl<T> BorrowMut<[T]> for [T; 4]

• impl<T> BorrowMut<[T]> for [T; 26]

• impl<T> BorrowMut<[T]> for [T; 12]

• impl<T> BorrowMut<[T]> for [T; 18]

• impl<T> BorrowMut<[T]> for [T; 16]

• impl<T> BorrowMut<[T]> for [T; 22]

• impl<T> BorrowMut<[T]> for [T; 1]

• impl<T> BorrowMut<[T]> for [T; 11]

• impl<T> BorrowMut<[T]> for [T; 14]

• impl<T> BorrowMut<[T]> for [T; 25]

• impl<T> BorrowMut<[T]> for [T; 27]

• impl<T> BorrowMut<[T]> for [T; 30]

• impl<T> BorrowMut<T> for T where     T: ?Sized,

• impl<T> BorrowMut<[T]> for [T; 32]

• impl<T> BorrowMut<[T]> for [T; 15]

• impl<T> BorrowMut<[T]> for [T; 24]

• impl<T> BorrowMut<[T]> for [T; 20]

• impl<'a, T> BorrowMut<T> for &'a mut T where     T: ?Sized,

• impl<T> BorrowMut<T> for Box<T> where     T: ?Sized,

• impl<T> BorrowMut<[T]> for Vec<T>