Struct ArenaItem

pub struct ArenaItem<T, S = SyncStorage> { /* private fields */ }

A copyable, stable reference for any value, stored on the arena whose ownership is managed by the reactive ownership tree.

Implementations

impl<T, S> ArenaItem<T, S>

where T: 'static, S: Storage<T>,

pub fn new_with_storage(value: T) -> Self

Stores the given value in the arena allocator.

impl<T> ArenaItem<T>

where T: Send + Sync + 'static,

pub fn new(value: T) -> Self

Stores the given value in the arena allocator.

impl<T> ArenaItem<T, LocalStorage>

where T: 'static,

pub fn new_local(value: T) -> Self

Stores the given value in the arena allocator.

impl<T, S: Storage<T>> ArenaItem<T, S>

pub fn try_with_value<U>(&self, fun: impl FnOnce(&T) -> U) -> Option<U>

Applies a function to a reference to the stored value and returns the result, or None if it has already been disposed.

pub fn try_update_value<U>(&self, fun: impl FnOnce(&mut T) -> U) -> Option<U>

Applies a function to a mutable reference to the stored value and returns the result, or None if it has already been disposed.

impl<T: Clone, S: Storage<T>> ArenaItem<T, S>

pub fn try_get_value(&self) -> Option<T>

Returns a clone of the stored value, or None if it has already been disposed.

Trait Implementations

impl<T, S> Clone for ArenaItem<T, S>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug, S: Debug> Debug for ArenaItem<T, S>

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

Formats the value using the given formatter.

impl<T, S> Default for ArenaItem<T, S>

where T: Default + 'static, S: Storage<T>,

fn default() -> Self

Returns the “default value” for a type.

impl<T, S> Dispose for ArenaItem<T, S>

fn dispose(self)

Disposes of the signal. This:

impl<T, S> Hash for ArenaItem<T, S>

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, S: Storage<T>> IntoInner for ArenaItem<T, S>

type Value = T

The type of the value contained in the signal.

fn into_inner(self) -> Option<Self::Value>

Returns the inner value if this is the only reference to the signal. Otherwise, returns None and drops this reference.

impl<T, S> IsDisposed for ArenaItem<T, S>

fn is_disposed(&self) -> bool

If true, the signal cannot be accessed without a panic.

impl<T, S> PartialEq for ArenaItem<T, S>

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, S> Copy for ArenaItem<T, S>

impl<T, S> Eq for ArenaItem<T, S>