Enum KnownSmartPointer

#[non_exhaustive]
pub enum KnownSmartPointer {
    Box,
    Rc,
    RcWeak,
    Arc,
    ArcWeak,
    Cow,
    Pin,
    Cell,
    RefCell,
    OnceCell,
    Mutex,
    RwLock,
    NonNull,
}

Represents common standard library smart pointer kinds

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Box

Box<T>, heap-allocated values with single ownership

Rc

Rc<T>, reference-counted values with multiple ownership

RcWeak

Weak<T>, a weak reference to an Rc-managed value

Arc

Arc<T>, thread-safe reference-counted values with multiple ownership

ArcWeak

Weak<T>, a weak reference to an Arc-managed value

Cow

Cow<'a, T>, a clone-on-write smart pointer

Pin

Pin<P>, a type that pins values behind a pointer

Cell

Cell<T>, a mutable memory location with interior mutability

RefCell

RefCell<T>, a mutable memory location with dynamic borrowing rules

OnceCell

OnceCell<T>, a cell that can be written to only once

Mutex

Mutex<T>, a mutual exclusion primitive

RwLock

RwLock<T>, a reader-writer lock

NonNull

NonNull<T>, a wrapper around a raw pointer that is not null

Trait Implementations

impl Clone for KnownSmartPointer

fn clone(&self) -> KnownSmartPointer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KnownSmartPointer

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

Formats the value using the given formatter.

impl Hash for KnownSmartPointer

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 PartialEq for KnownSmartPointer

fn eq(&self, other: &KnownSmartPointer) -> 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 Copy for KnownSmartPointer

impl Eq for KnownSmartPointer

impl StructuralPartialEq for KnownSmartPointer