Struct RawInterned 

pub struct RawInterned<T: ?Sized = Prv>(/* private fields */);

A same type with the Interned, but with erased lifetime.

Although lifetime is erased, RawInterned still has type, so it can be used when type is required. You can also erase type too by calling to erase.

Note

RawInterned is just pointer type and points to the type T in memory. If T is ZST or DST but containing no data like empty string, the pointer would be non-null, well-aligned, but dangling. So it’s discouraged to compare type erased RawInterneds because they would have the same dangling pointers even though they were different types.

Implementations

impl<T: ?Sized> RawInterned<T>

pub fn cast<U>(self) -> RawInterned<U>

pub fn erase(self) -> RawInterned

Methods from Deref<Target = NonNull<T>>

pub unsafe fn as_ref<'a>(&self) -> &'a T

Returns a shared reference to the value. If the value may be uninitialized, as_uninit_ref must be used instead.

For the mutable counterpart see as_mut.

Safety

When calling this method, you have to ensure that the pointer is convertible to a reference.

Examples

use std::ptr::NonNull;

let mut x = 0u32;
let ptr = NonNull::new(&mut x as *mut _).expect("ptr is null!");

let ref_x = unsafe { ptr.as_ref() };
println!("{ref_x}");

Trait Implementations

impl<T: ?Sized> Borrow<NonNull<T>> for RawInterned<T>

fn borrow(&self) -> &NonNull<T>

Immutably borrows from an owned value.

impl<T: ?Sized> Clone for RawInterned<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: ?Sized> Debug for RawInterned<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T: ?Sized> Deref for RawInterned<T>

type Target = NonNull<T>

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T: ?Sized> Hash for RawInterned<T>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: ?Sized> Ord for RawInterned<T>

Pointer comparison by address.

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<T: ?Sized> PartialEq for RawInterned<T>

Pointer comparison by address.

fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: ?Sized> PartialOrd for RawInterned<T>

Pointer comparison by address.

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl<T: ?Sized> Copy for RawInterned<T>

impl<T: ?Sized> Eq for RawInterned<T>

Pointer comparison by address.