Enum bevy_ecs::query::QueryEntityError
source · pub enum QueryEntityError {
QueryDoesNotMatch(Entity),
NoSuchEntity(Entity),
AliasedMutability(Entity),
}
Expand description
An error that occurs when retrieving a specific Entity
’s query result from Query
or QueryState
.
Variants§
QueryDoesNotMatch(Entity)
The given Entity
’s components do not match the query.
Either it does not have a requested component, or it has a component which the query filters out.
NoSuchEntity(Entity)
The given Entity
does not exist.
AliasedMutability(Entity)
The Entity
was requested mutably more than once.
See QueryState::get_many_mut
for an example.
Trait Implementations§
source§impl Clone for QueryEntityError
impl Clone for QueryEntityError
source§fn clone(&self) -> QueryEntityError
fn clone(&self) -> QueryEntityError
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl Debug for QueryEntityError
impl Debug for QueryEntityError
source§impl Display for QueryEntityError
impl Display for QueryEntityError
source§impl Error for QueryEntityError
impl Error for QueryEntityError
1.30.0 · source§fn source(&self) -> Option<&(dyn Error + 'static)>
fn source(&self) -> Option<&(dyn Error + 'static)>
The lower-level source of this error, if any. Read more
1.0.0 · source§fn description(&self) -> &str
fn description(&self) -> &str
👎Deprecated since 1.42.0: use the Display impl or to_string()
source§impl PartialEq for QueryEntityError
impl PartialEq for QueryEntityError
source§fn eq(&self, other: &QueryEntityError) -> bool
fn eq(&self, other: &QueryEntityError) -> bool
This method tests for
self
and other
values to be equal, and is used
by ==
.impl Copy for QueryEntityError
impl Eq for QueryEntityError
impl StructuralPartialEq for QueryEntityError
Auto Trait Implementations§
impl Freeze for QueryEntityError
impl RefUnwindSafe for QueryEntityError
impl Send for QueryEntityError
impl Sync for QueryEntityError
impl Unpin for QueryEntityError
impl UnwindSafe for QueryEntityError
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
source§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
Convert
Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
.source§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Convert
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
.source§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert
&Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &Any
’s vtable from &Trait
’s.source§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Convert
&mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s.source§impl<T> DowncastSync for T
impl<T> DowncastSync for T
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.