Struct EventIdMapEntry 

pub struct EventIdMapEntry<'a, E, V>(/* private fields */)
where
    E: Borrow<EventId>;

Available on crate feature state-res only.

A view into a single entry in an EventIdMap.

Implementations

impl<'a, E, V> EventIdMapEntry<'a, E, V>

where E: Borrow<EventId>,

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.

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.

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.

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

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

impl<'a, E, V> EventIdMapEntry<'a, E, V>

where E: Borrow<EventId>, V: Default,

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

impl<'a, E, V> Debug for EventIdMapEntry<'a, E, V>

where E: Debug + Borrow<EventId>, V: Debug,

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

Formats the value using the given formatter.