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.

Similar to Borrow, but for mutable borrows.

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; 16]
• impl<T> BorrowMut<[T]> for [T; 22]
• impl<T> BorrowMut<[T]> for [T; 26]
• impl<T> BorrowMut<[T]> for [T; 18]
• impl<T> BorrowMut<[T]> for [T; 25]
• impl<T> BorrowMut<[T]> for [T; 21]
• impl<T> BorrowMut<[T]> for [T; 12]
• impl<T> BorrowMut<[T]> for [T; 10]
• impl<T> BorrowMut<[T]> for [T; 15]
• impl<T> BorrowMut<[T]> for [T; 32]
• impl<T> BorrowMut<[T]> for [T; 14]
• impl<T> BorrowMut<[T]> for [T; 6]
• impl<T> BorrowMut<[T]> for [T; 28]
• impl<T> BorrowMut<T> for T where
    T: ?Sized, 
• impl<T> BorrowMut<[T]> for [T; 23]
• impl<T> BorrowMut<[T]> for [T; 8]
• impl<T> BorrowMut<[T]> for [T; 11]
• impl<T> BorrowMut<[T]> for [T; 24]
• impl<T> BorrowMut<[T]> for [T; 5]
• impl<T> BorrowMut<[T]> for [T; 29]
• impl<T> BorrowMut<[T]> for [T; 19]
• impl<T> BorrowMut<[T]> for [T; 30]
• impl<T> BorrowMut<[T]> for [T; 1]
• impl<T> BorrowMut<[T]> for [T; 27]
• impl<T> BorrowMut<[T]> for [T; 3]
• impl<T> BorrowMut<[T]> for [T; 2]
• impl<T> BorrowMut<[T]> for [T; 20]
• impl<T> BorrowMut<[T]> for [T; 17]
• impl<'a, T> BorrowMut<T> for &'a mut T where
    T: ?Sized, 
• impl<T> BorrowMut<[T]> for [T; 4]
• impl<T> BorrowMut<[T]> for [T; 13]
• impl<T> BorrowMut<[T]> for [T; 9]
• impl<T> BorrowMut<[T]> for [T; 31]
• impl<T> BorrowMut<[T]> for [T; 7]
• impl<T> BorrowMut<[T]> for [T; 0]
• impl<T> BorrowMut<T> for Box<T> where
    T: ?Sized, 
• impl<T> BorrowMut<[T]> for Vec<T>