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EventIdMapEntry

ruma::state_res::utils::event_id_map

Struct EventIdMapEntry 

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pub struct EventIdMapEntry<'a, E, V>(/* private fields */)
where
    E: Borrow<EventId>;
Available on crate feature state-res only.
Expand description

A view into a single entry in an EventIdMap.

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impl<'a, E, V> EventIdMapEntry<'a, E, V>
where E: Borrow<EventId>,

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pub fn or_insert(self, default: V) -> &'a mut V

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>(self, default: F) -> &'a mut V
where F: FnOnce() -> V,

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>(self, default: F) -> &'a mut V
where F: FnOnce(&E) -> V,

Ensures a value is in the entry by inserting, if empty, the result of the default function.

This method allows for generating key-derived values for insertion by providing the default function a reference to the key that was moved during the .entry(key) method call.

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pub fn insert_entry(self, value: V) -> &'a mut V

Sets the value of the entry, and returns a mutable reference to the value.

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impl<'a, E, V> EventIdMapEntry<'a, E, V>
where E: Borrow<EventId>, V: Default,

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pub fn or_default(self) -> &'a mut V

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, E, V> Debug for EventIdMapEntry<'a, E, V>
where E: Debug + Borrow<EventId>, V: Debug,

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

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impl<'a, E, V> Freeze for EventIdMapEntry<'a, E, V>
where E: Freeze,

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impl<'a, E, V> RefUnwindSafe for EventIdMapEntry<'a, E, V>
where E: RefUnwindSafe, V: RefUnwindSafe,

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impl<'a, E, V> Send for EventIdMapEntry<'a, E, V>
where E: Send, V: Send,

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impl<'a, E, V> Sync for EventIdMapEntry<'a, E, V>
where E: Sync, V: Sync,

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impl<'a, E, V> Unpin for EventIdMapEntry<'a, E, V>
where E: Unpin,

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impl<'a, E, V> UnsafeUnpin for EventIdMapEntry<'a, E, V>
where E: UnsafeUnpin,

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impl<'a, E, V> !UnwindSafe for EventIdMapEntry<'a, E, V>

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> DropFlavorWrapper<T> for T

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type Flavor = MayDrop

The DropFlavor that wraps T into Self
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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, UT> HandleAlloc<UT> for T
where T: Send + Sync,

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

Create a new handle for an Arc value Read more
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unsafe fn clone_handle(handle: Handle) -> Handle

Clone a handle Read more
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unsafe fn consume_handle(handle: Handle) -> Arc<T>

Consume a handle, getting back the initial Arc<> Read more
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unsafe fn get_arc(handle: Handle) -> Arc<Self>

Get a clone of the Arc<> using a “borrowed” handle. Read more
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impl<T, W> HasTypeWitness<W> for T
where W: MakeTypeWitness<Arg = T>, T: ?Sized,

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const WITNESS: W = W::MAKE

A constant of the type witness
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impl<T> Identity for T
where T: ?Sized,

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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.
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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>).
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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<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> Same for T

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type Output = T

Should always be Self
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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.
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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
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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> JsonCastable<CanonicalJsonValue> for T

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impl<T> JsonCastable<Value> for T