1.0.0[−][src]Trait sp_std::borrow::BorrowMut

pub trait BorrowMut<Borrowed>: Borrow<Borrowed> where
    Borrowed: ?Sized, {
    fn borrow_mut(&mut self) -> &mut Borrowedⓘ
Notable traits for &'_ mut I
impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,     type Item = <I as Iterator>::Item;
;
}
[−]

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ⓘ

Notable traits for &'_ mut I

impl<'_, I> Iterator for &'_ mut I where
    I: Iterator + ?Sized,  type Item = <I as Iterator>::Item;
[−]

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);

Implementations on Foreign Types

impl<T, const N: usize> BorrowMut<[T]> for [T; N][src][−]

impl<'_, T> BorrowMut<T> for &'_ mut T where
    T: ?Sized, [src][−]

impl BorrowMut<str> for String[src][−]

Implementors

impl<T> BorrowMut<[T]> for Vec<T>[src][+]

impl<T> BorrowMut<T> for Box<T> where
    T: ?Sized, [src][+]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src][+]

impl<A: Array> BorrowMut<[<A as Array>::Item]> for ArrayVec<A>

impl<O, T> BorrowMut<BitSlice<O, T>> for BitBox<O, T> where
    O: BitOrder,
    T: BitStore, 

impl<O, T> BorrowMut<BitSlice<O, T>> for BitVec<O, T> where
    O: BitOrder,
    T: BitStore, 

impl<P, T: ?Sized> BorrowMut<T> for ClearOnDrop<P> where
    P: DerefMut + BorrowMut<T>,
    P::Target: Clear,
    T: Clear, 

impl<T, N> BorrowMut<[T]> for GenericArray<T, N> where
    N: ArrayLength<T>, 

impl<A: Array> BorrowMut<[<A as Array>::Item]> for SmallVec<A>