pub struct Read<C>(_);
Expand description
Implements Fetch
and allows components to be borrowed immutable.
Trait Implementations§
source§impl<T: Component> PushBorrow for Read<T>
impl<T: Component> PushBorrow for Read<T>
source§fn push_borrow(borrow: &mut Borrow) -> bool
fn push_borrow(borrow: &mut Borrow) -> bool
Multiple reads are always allowed and therefor we can always return true
Auto Trait Implementations§
impl<C> RefUnwindSafe for Read<C>where
C: RefUnwindSafe,
impl<C> Send for Read<C>where
C: Send,
impl<C> Sync for Read<C>where
C: Sync,
impl<C> Unpin for Read<C>where
C: Unpin,
impl<C> UnwindSafe for Read<C>where
C: UnwindSafe,
Blanket Implementations§
source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
source§fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>
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
. Read moresource§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any + 'static>
Convert
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
. Read moresource§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. Read moresource§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. Read more