matrix_sdk_base::ttl_cache

Struct TtlCache

Source 
pub struct TtlCache<K, V>
where
    K: Eq + Hash,
    V: Clone,
{ /* private fields */ }
Expand description

A TTL cache where items get removed deterministically in the get() call.

Implementations§

Source§

impl<K, V> TtlCache<K, V>
where K: Eq + Hash, V: Clone,

Source

pub fn new() -> TtlCache<K, V>

Create a new, empty, TtlCache.

Source

pub fn contains<Q>(&self, key: &Q) -> bool
where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

Does the cache contain an non-expired item with the matching key.

Source

pub fn insert(&mut self, key: K, value: V)

Add a single item to the cache.

Source

pub fn extend(&mut self, iterator: impl IntoIterator<Item = (K, V)>)

Extend the cache with the given iterator of items.

Source

pub fn remove<Q>(&mut self, key: &Q) -> Option<V>
where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

Remove the item that matches the given key.

Source

pub fn get<Q>(&mut self, key: &Q) -> Option<V>
where K: Borrow<Q>, Q: Hash + Eq + ?Sized,

Get the item that matches the given key, if the item has expired None will be returned and the item will be evicted from the cache.

Trait Implementations§

Source§

impl<K, V> Debug for TtlCache<K, V>
where K: Debug + Eq + Hash, V: Debug + Clone,

Source§

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

Formats the value using the given formatter. Read more
Source§

impl<K, V> Default for TtlCache<K, V>
where K: Eq + Hash, V: Clone,

Source§

fn default() -> TtlCache<K, V>

Returns the “default value” for a type. Read more

Auto Trait Implementations§

§

impl<K, V> Freeze for TtlCache<K, V>

§

impl<K, V> RefUnwindSafe for TtlCache<K, V>
where K: RefUnwindSafe, V: RefUnwindSafe,

§

impl<K, V> Send for TtlCache<K, V>
where K: Send, V: Send,

§

impl<K, V> Sync for TtlCache<K, V>
where K: Sync, V: Sync,

§

impl<K, V> Unpin for TtlCache<K, V>
where K: Unpin, V: Unpin,

§

impl<K, V> UnwindSafe for TtlCache<K, V>
where K: UnwindSafe, V: UnwindSafe,

Blanket Implementations§

Source§

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

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

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

Mutably borrows from an owned value. Read more
§

impl<T> CompatExt for T

§

fn compat(self) -> Compat<T>

Applies the [Compat] adapter by value. Read more
§

fn compat_ref(&self) -> Compat<&T>

Applies the [Compat] adapter by shared reference. Read more
§

fn compat_mut(&mut self) -> Compat<&mut T>

Applies the [Compat] adapter by mutable reference. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, UT> HandleAlloc<UT> for T
where T: Send + Sync,

Source§

fn new_handle(value: Arc<T>) -> Handle

Create a new handle for an Arc value Read more
Source§

fn clone_handle(handle: Handle) -> Handle

Clone a handle Read more
Source§

fn consume_handle(handle: Handle) -> Arc<T>

Consume a handle, getting back the initial Arc<>
Source§

fn get_arc(handle: Handle) -> Arc<Self>

Get a clone of the Arc<> using a “borrowed” handle. Read more
Source§

impl<T, W> HasTypeWitness<W> for T
where W: MakeTypeWitness<Arg = T>, T: ?Sized,

Source§

const WITNESS: W = W::MAKE

A constant of the type witness
Source§

impl<T> Identity for T
where T: ?Sized,

Source§

const TYPE_EQ: TypeEq<T, <T as Identity>::Type> = TypeEq::NEW

Proof that Self is the same type as Self::Type, provides methods for casting between Self and Self::Type.
Source§

type Type = T

The same type as Self, used to emulate type equality bounds (T == U) with associated type equality constraints (T: Identity<Type = U>).
§

impl<T> Instrument for T

§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

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

Source§

fn into(self) -> U

Calls U::from(self).

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

Source§

impl<T> IntoEither for T

Source§

fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

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

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

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

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

Source§

fn vzip(self) -> V

§

impl<T> WithSubscriber for T

§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a [WithDispatch] wrapper. Read more
§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a [WithDispatch] wrapper. Read more
Source§

impl<T> AsyncTraitDeps for T
where T: Debug + SendOutsideWasm + SyncOutsideWasm,

Source§

impl<T> ErasedDestructor for T
where T: 'static,

Source§

impl<T> MaybeSendSync for T

Source§

impl<T> SendOutsideWasm for T
where T: Send,

Source§

impl<T> SyncOutsideWasm for T
where T: Sync,