Trait Sealed

pub trait Sealed<T> {
    type Output;

    // Required methods
    fn parts_mut(&mut self) -> (*mut T, usize);
    unsafe fn assume_init(self, len: usize) -> Self::Output;
}

Required Associated Types

type Output

The result of the process operation.

Required Methods

fn parts_mut(&mut self) -> (*mut T, usize)

Return a pointer and length for this buffer.

The length is the number of elements of type T, not a number of bytes.

It’s tempting to have this return &mut [MaybeUninit<T>] instead, however that would require this function to be unsafe, because callers could use the &mut [MaybeUninit<T>] slice to set elements to MaybeUninit::<T>::uninit(), which would be a problem if Self is &mut [T] or similar.

unsafe fn assume_init(self, len: usize) -> Self::Output

Convert a finished buffer pointer into its result.

Safety

At least len elements of the buffer must now be initialized.

Implementations on Foreign Types

impl<'a, T> Sealed<T> for &'a mut Vec<MaybeUninit<T>>

type Output = (&'a mut [T], &'a mut [MaybeUninit<T>])

fn parts_mut(&mut self) -> (*mut T, usize)

unsafe fn assume_init(self, len: usize) -> Self::Output

impl<'a, T> Sealed<T> for &'a mut [MaybeUninit<T>]

type Output = (&'a mut [T], &'a mut [MaybeUninit<T>])

fn parts_mut(&mut self) -> (*mut T, usize)

unsafe fn assume_init(self, len: usize) -> Self::Output

impl<'a, T, const N: usize> Sealed<T> for &'a mut [MaybeUninit<T>; N]

type Output = (&'a mut [T], &'a mut [MaybeUninit<T>])

fn parts_mut(&mut self) -> (*mut T, usize)

unsafe fn assume_init(self, len: usize) -> Self::Output

impl<T> Sealed<T> for &mut [T]

type Output = usize

fn parts_mut(&mut self) -> (*mut T, usize)

unsafe fn assume_init(self, len: usize) -> Self::Output

impl<T> Sealed<T> for &mut Vec<T>

type Output = usize

fn parts_mut(&mut self) -> (*mut T, usize)

unsafe fn assume_init(self, len: usize) -> Self::Output

impl<T, const N: usize> Sealed<T> for &mut [T; N]

type Output = usize

fn parts_mut(&mut self) -> (*mut T, usize)

unsafe fn assume_init(self, len: usize) -> Self::Output

Implementors

impl<'a, T> Sealed<T> for SpareCapacity<'a, T>

type Output = usize