Struct repository::EntityId

pub struct EntityId<R = Repo>(_, _);

An index handle to a value in repository.

Implementations

impl<R> EntityId<R>

pub fn cast_repo<R2>(self) -> EntityId<R2>

Convert entity id to work with another repository type.

impl<R: AsRepoRef> EntityId<R>

pub fn cast_ptr<T: Any>(self, repo: &R) -> Option<EntityPtr<T>>

Try to downcast this index handle to a pointer handle.

pub fn cast_ref<T: Any>(self, repo: &R) -> Option<&T>

Try to downcast this index handle to a reference to the value.

impl<R: AsRepoMut> EntityId<R>

pub fn cast_mut<T: Any>(self, repo: &mut R) -> Option<&mut T>

Try to downcast this index handle to a mutable reference to the value.

Trait Implementations

impl<R> Clone for EntityId<R>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<R> Copy for EntityId<R>

impl<R> Debug for EntityId<R>

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

Formats the value using the given formatter.

impl<R> Eq for EntityId<R>

impl<R> Hash for EntityId<R>

fn hash<H: Hasher>(&self, state: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl<R> Ord for EntityId<R>

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

#[must_use]fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl<R> PartialEq<EntityId<R>> for EntityId<R>

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

#[must_use]fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl<R> PartialOrd<EntityId<R>> for EntityId<R>

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

#[must_use]fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

#[must_use]fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

#[must_use]fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

#[must_use]fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.