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KnownPointer

Enum KnownPointer 

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pub enum KnownPointer {
Show 17 variants Box, Rc, RcWeak, Arc, ArcWeak, Cow, Pin, Cell, RefCell, OnceCell, Mutex, RwLock, OnceLock, LazyLock, NonNull, SharedReference, ExclusiveReference,
}
Expand description

Represents common standard library pointer kinds

Variants§

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Box

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

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Rc

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

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RcWeak

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

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Arc

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

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ArcWeak

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

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Cow

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

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Pin

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

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Cell

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

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RefCell

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

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OnceCell

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

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Mutex

Mutex<T>, a mutual exclusion primitive (requires std)

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RwLock

RwLock<T>, a reader-writer lock (requires std)

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OnceLock

OnceLock<T>, a cell that can be written to only once (requires std)

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LazyLock

LazyLock<T, F>, a lazy-initialized value (requires std)

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NonNull

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

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SharedReference

&T

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ExclusiveReference

&mut T

Trait Implementations§

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impl Clone for KnownPointer

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fn clone(&self) -> KnownPointer

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for KnownPointer

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impl Debug for KnownPointer

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

Formats the value using the given formatter. Read more
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impl Eq for KnownPointer

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impl Hash for KnownPointer

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

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

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

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for KnownPointer

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for KnownPointer

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.