Enum typemap_rev::Entry

pub enum Entry<'a, K, S: ?Sized = DefaultStorage>where
    K: TypeMapKey,{
    Occupied(OccupiedEntry<'a, K, S>),
    Vacant(VacantEntry<'a, K, S>),
}

Expand description

A view into a single entry in the TypeMap, which may either be vacant or occupied.

This heavily mirrors the official Entry API in the standard library, but not all of it is provided due to implementation restrictions. Please refer to its documentations.

Variants

Occupied(OccupiedEntry<'a, K, S>)

Vacant(VacantEntry<'a, K, S>)

Implementations

impl<'a, K, S> Entry<'a, K, S>where
    K: TypeMapKey,
    K::Value: IntoBox<S>,
    S: ?Sized + Any + Send + Sync,

pub fn or_insert(self, value: K::Value) -> &'a mut K::Value

pub fn or_insert_with<F>(self, f: F) -> &'a mut K::Valuewhere
F: FnOnce() -> K::Value,

pub fn and_modify<F>(self, f: F) -> Selfwhere
F: FnOnce(&mut K::Value),

impl<'a, K, S> Entry<'a, K, S>where
    K: TypeMapKey,
    K::Value: Default + IntoBox<S>,
    S: ?Sized + Any + Send + Sync,

pub fn or_default(self) -> &'a mut K::Value

Auto Trait Implementations

impl<'a, K, S: ?Sized> RefUnwindSafe for Entry<'a, K, S>where
S: RefUnwindSafe,
<K as TypeMapKey>::Value: RefUnwindSafe,

impl<'a, K, S: ?Sized> Send for Entry<'a, K, S>where
S: Send,

impl<'a, K, S: ?Sized> Sync for Entry<'a, K, S>where
S: Sync,

impl<'a, K, S: ?Sized> Unpin for Entry<'a, K, S>

impl<'a, K, S = dyn Any + Sync + Send + 'static> !UnwindSafe for Entry<'a, K, S>

Blanket Implementations

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for Twhere
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.

impl<T, U> TryFrom<U> for Twhere
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<U>>::Error>

Performs the conversion.

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

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

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.