1.0.0[][src]Trait alloc_wg::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

fn borrow_mut(&mut self) -> &mut Borrowed

Mutably borrows from an owned value.


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];

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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

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

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

impl BorrowMut<str> for String[src]

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impl<D: AllocRef> BorrowMut<str> for alloc_wg::string::String<D>[src]

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

impl<T: ?Sized, A: AllocRef> BorrowMut<T> for alloc_wg::boxed::Box<T, A>[src]

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