pub struct Res<'w, T> where
T: Resource, { /* private fields */ }Expand description
Shared borrow of a resource.
See the World documentation to see the usage of a resource.
If you need a unique mutable borrow, use ResMut instead.
Panics
Panics when used as a SystemParameter if the resource does not exist.
Use Option<Res<T>> instead if the resource might not always exist.
Implementations
impl<'w, T> Res<'w, T> where
T: Resource,
impl<'w, T> Res<'w, T> where
T: Resource,
pub fn is_added(&self) -> bool
pub fn is_added(&self) -> bool
Returns true if (and only if) this resource been added since the last execution of this system.
pub fn is_changed(&self) -> bool
pub fn is_changed(&self) -> bool
Returns true if (and only if) this resource been changed since the last execution of this system.
pub fn into_inner(self) -> &'w T
Trait Implementations
impl<'a, T> SystemParam for Res<'a, T> where
T: Resource,
impl<'a, T> SystemParam for Res<'a, T> where
T: Resource,
type Fetch = ResState<T>
Auto Trait Implementations
impl<'w, T> RefUnwindSafe for Res<'w, T> where
T: RefUnwindSafe,
impl<'w, T> Send for Res<'w, T>
impl<'w, T> Sync for Res<'w, T>
impl<'w, T> Unpin for Res<'w, T>
impl<'w, T> UnwindSafe for Res<'w, T> where
T: RefUnwindSafe,
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
impl<T> Downcast for T where
T: Any,
impl<T> Downcast for T where
T: Any,
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<F, A>impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;
fn into_any(self: Box<T, Global>) -> Box<dyn Any + 'static, Global>ⓘNotable traits for Box<F, A>impl<F, A> Future for Box<F, A> where
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;
F: Future + Unpin + ?Sized,
A: Allocator + 'static, type Output = <F as Future>::Output;impl<I, A> Iterator for Box<I, A> where
I: Iterator + ?Sized,
A: Allocator, type Item = <I as Iterator>::Item;
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 more
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 more
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 more
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
sourceimpl<T> Instrument for T
impl<T> Instrument for T
sourcefn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn instrument(self, span: Span) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
sourcefn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
fn in_current_span(self) -> Instrumented<Self>ⓘNotable traits for Instrumented<T>impl<T> Future for Instrumented<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
impl<S, T> ParallelSlice<T> for S where
T: Sync,
S: AsRef<[T]>,
impl<S, T> ParallelSlice<T> for S where
T: Sync,
S: AsRef<[T]>,
fn par_chunk_map<F, R>(
&self,
task_pool: &TaskPool,
chunk_size: usize,
f: F
) -> Vec<R, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where
A: Allocator, where
F: Fn(&[T]) -> R + Send + Sync,
R: 'static + Send,
fn par_chunk_map<F, R>(
&self,
task_pool: &TaskPool,
chunk_size: usize,
f: F
) -> Vec<R, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where
A: Allocator, where
F: Fn(&[T]) -> R + Send + Sync,
R: 'static + Send,
A: Allocator,
Splits the slice in chunks of size chunks_size or less and maps the chunks
in parallel across the provided task_pool. One task is spawned in the task pool
for every chunk. Read more
fn par_splat_map<F, R>(
&self,
task_pool: &TaskPool,
max_tasks: Option<usize>,
f: F
) -> Vec<R, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where
A: Allocator, where
F: Fn(&[T]) -> R + Send + Sync,
R: 'static + Send,
fn par_splat_map<F, R>(
&self,
task_pool: &TaskPool,
max_tasks: Option<usize>,
f: F
) -> Vec<R, Global>ⓘNotable traits for Vec<u8, A>impl<A> Write for Vec<u8, A> where
A: Allocator, where
F: Fn(&[T]) -> R + Send + Sync,
R: 'static + Send,
A: Allocator,
Splits the slice into a maximum of max_tasks chunks, and maps the chunks in parallel
across the provided task_pool. One task is spawned in the task pool for every chunk. Read more
sourceimpl<T> ToHex for T where
T: AsRef<[u8]>,
impl<T> ToHex for T where
T: AsRef<[u8]>,
sourcefn encode_hex<U>(&self) -> U where
U: FromIterator<char>,
fn encode_hex<U>(&self) -> U where
U: FromIterator<char>,
Encode the hex strict representing self into the result. Lower case
letters are used (e.g. f9b4ca) Read more
sourcefn encode_hex_upper<U>(&self) -> U where
U: FromIterator<char>,
fn encode_hex_upper<U>(&self) -> U where
U: FromIterator<char>,
Encode the hex strict representing self into the result. Upper case
letters are used (e.g. F9B4CA) Read more
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
fn vzip(self) -> V
sourceimpl<T> WithSubscriber for T
impl<T> WithSubscriber for T
sourcefn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output; where
S: Into<Dispatch>,
fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output; where
S: Into<Dispatch>,
T: Future, type Output = <T as Future>::Output;
Attaches the provided Subscriber to this type, returning a
WithDispatch wrapper. Read more
sourcefn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
fn with_current_subscriber(self) -> WithDispatch<Self>ⓘNotable traits for WithDispatch<T>impl<T> Future for WithDispatch<T> where
T: Future, type Output = <T as Future>::Output;
T: Future, type Output = <T as Future>::Output;
Attaches the current default Subscriber to this type, returning a
WithDispatch wrapper. Read more