Enum EntityFetchError

pub enum EntityFetchError {
    NoSuchEntity(Entity),
    AliasedMutability(Entity),
}

An error that occurs when fetching entities mutably from a world.

Variants

NoSuchEntity(Entity)

The entity with the given ID does not exist.

AliasedMutability(Entity)

The entity with the given ID was requested mutably more than once.

Trait Implementations

impl Clone for EntityFetchError

fn clone(&self) -> EntityFetchError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for EntityFetchError

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

Formats the value using the given formatter.

impl Display for EntityFetchError

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

Formats the value using the given formatter.

impl Error for EntityFetchError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.

impl PartialEq for EntityFetchError

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

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for EntityFetchError

impl Eq for EntityFetchError

impl StructuralPartialEq for EntityFetchError