Enum CachedState

pub enum CachedState<T> {
    EmptyCache,
    ValueCached(T),
    Inflight,
}

An enum representing the state of an instance of Cached, returned by Cached::force_recompute.

Variants

EmptyCache

The cache is empty and there is no inflight computation happening.

ValueCached(T)

A cached value is present.

Inflight

An inflight computation is currently happening.

Implementations

impl<T> CachedState<T>

pub fn is_inflight(&self) -> bool

Returns true iff there is an inflight computation happening.

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

Returns the value in the cache immediately if present.

pub fn get_mut(&mut self) -> Option<&mut T>

Returns the value in the cache immediately if present.

Trait Implementations

impl<T: Clone> Clone for CachedState<T>

fn clone(&self) -> CachedState<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for CachedState<T>

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

Formats the value using the given formatter.

impl<T: PartialEq> PartialEq for CachedState<T>

fn eq(&self, other: &CachedState<T>) -> 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: Copy> Copy for CachedState<T>

impl<T: Eq> Eq for CachedState<T>

impl<T> StructuralPartialEq for CachedState<T>