Enum remoc_obs::hash_map::Entry

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pub enum Entry<'a, K, V, Codec = Default> {
    Occupied(OccupiedEntry<'a, K, V, Codec>),
    Vacant(VacantEntry<'a, K, V, Codec>),
}

Expand description

A view into a single entry in an observable hash map, which may either be vacant or occupied.

This is returned by ObservableHashMap::entry.

Variants

`Occupied(OccupiedEntry<'a, K, V, Codec>)`

An occupied entry.

`Vacant(VacantEntry<'a, K, V, Codec>)`

A vacant entry.

Implementations

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impl<'a, K, V, Codec> Entry<'a, K, V, Codec> where
 K: Clone + RemoteSend,
 V: Clone + RemoteSend,
 Codec: Codec,

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pub fn or_insert(self, default: V) -> RefMut<'a, K, V, Codec>

Ensures a value is in the entry by inserting the default if empty, and returns a mutable reference to the value in the entry.

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pub fn or_insert_with<F: FnOnce() -> V>(
self,
default: F
) -> RefMut<'a, K, V, Codec>

Ensures a value is in the entry by inserting the result of the default function if empty, and returns a mutable reference to the value in the entry.

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pub fn or_insert_with_key<F: FnOnce(&K) -> V>(
self,
default: F
) -> RefMut<'a, K, V, Codec>

Ensures a value is in the entry by inserting the result of the default function with key as argument if empty, and returns a mutable reference to the value in the entry.

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pub fn key(&self) -> &K

Returns a reference to this entry’s key.

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pub fn and_modify<F: FnOnce(&mut V)>(self, f: F) -> Self

Provides in-place mutable access to an occupied entry before any potential inserts into the map.

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impl<'a, K, V, Codec> Entry<'a, K, V, Codec> where
 K: Clone + RemoteSend,
 V: Clone + RemoteSend + Default,
 Codec: Codec,

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pub fn or_default(self) -> RefMut<'a, K, V, Codec>

Ensures a value is in the entry by inserting the default value if empty, and returns a mutable reference to the value in the entry.

Trait Implementations

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impl<'a, K: Debug, V: Debug, Codec: Debug> Debug for Entry<'a, K, V, Codec>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl<'a, K, V, Codec = Default> !RefUnwindSafe for Entry<'a, K, V, Codec>

impl<'a, K, V, Codec = Default> !Send for Entry<'a, K, V, Codec>

impl<'a, K, V, Codec = Default> !Sync for Entry<'a, K, V, Codec>

impl<'a, K, V, Codec> Unpin for Entry<'a, K, V, Codec> where
K: Unpin,

impl<'a, K, V, Codec = Default> !UnwindSafe for Entry<'a, K, V, Codec>

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,

const: unstable · source

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,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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

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

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fn in_current_span(self) -> Instrumented<Self>

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

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

const: unstable · 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.

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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

fn vzip(self) -> V

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impl<T> WithSubscriber for T

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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

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fn with_current_subscriber(self) -> WithDispatch<Self>

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

Enum remoc_obs::hash_map::Entry

Variants

Occupied(OccupiedEntry<'a, K, V, Codec>)

Vacant(VacantEntry<'a, K, V, Codec>)

Implementations

impl<'a, K, V, Codec> Entry<'a, K, V, Codec> where K: Clone + RemoteSend, V: Clone + RemoteSend, Codec: Codec,

pub fn or_insert(self, default: V) -> RefMut<'a, K, V, Codec>

pub fn or_insert_with<F: FnOnce() -> V>( self, default: F) -> RefMut<'a, K, V, Codec>

pub fn or_insert_with_key<F: FnOnce(&K) -> V>( self, default: F) -> RefMut<'a, K, V, Codec>

pub fn key(&self) -> &K

pub fn and_modify<F: FnOnce(&mut V)>(self, f: F) -> Self

impl<'a, K, V, Codec> Entry<'a, K, V, Codec> where K: Clone + RemoteSend, V: Clone + RemoteSend + Default, Codec: Codec,

pub fn or_default(self) -> RefMut<'a, K, V, Codec>

Trait Implementations

impl<'a, K: Debug, V: Debug, Codec: Debug> Debug for Entry<'a, K, V, Codec>

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

Auto Trait Implementations

impl<'a, K, V, Codec = Default> !RefUnwindSafe for Entry<'a, K, V, Codec>

impl<'a, K, V, Codec = Default> !Send for Entry<'a, K, V, Codec>

impl<'a, K, V, Codec = Default> !Sync for Entry<'a, K, V, Codec>

impl<'a, K, V, Codec> Unpin for Entry<'a, K, V, Codec> where K: Unpin,

impl<'a, K, V, Codec = Default> !UnwindSafe for Entry<'a, K, V, Codec>

Blanket Implementations

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

fn type_id(&self) -> TypeId

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

fn borrow(&self) -> &T

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

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

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

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

fn in_current_span(self) -> Instrumented<Self>

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

fn into(self) -> U

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

type Error = Infallible

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

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

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

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

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

fn vzip(self) -> V

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self>

`Occupied(OccupiedEntry<'a, K, V, Codec>)`

`Vacant(VacantEntry<'a, K, V, Codec>)`

impl<'a, K, V, Codec> Entry<'a, K, V, Codec> where
K: Clone + RemoteSend,
V: Clone + RemoteSend,
Codec: Codec,

pub fn or_insert_with<F: FnOnce() -> V>(
self,
default: F
) -> RefMut<'a, K, V, Codec>

pub fn or_insert_with_key<F: FnOnce(&K) -> V>(
self,
default: F
) -> RefMut<'a, K, V, Codec>

impl<'a, K, V, Codec> Entry<'a, K, V, Codec> where
K: Clone + RemoteSend,
V: Clone + RemoteSend + Default,
Codec: Codec,

impl<'a, K, V, Codec> Unpin for Entry<'a, K, V, Codec> where
K: Unpin,

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

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

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

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

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

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

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

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