[][src]Struct specs::Read

pub struct Read<'a, T, F = DefaultProvider> where
    T: 'a, 
{ /* fields omitted */ }

Allows to fetch a resource in a system immutably.

If the resource isn't strictly required, you should use Option<Read<T>>.

Type parameters

Trait Implementations

impl<'a, T, F> SystemData<'a> for Read<'a, T, F> where
    F: SetupHandler<T>,
    T: Resource
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impl<'a, T, F> From<Fetch<'a, T>> for Read<'a, T, F>[src]

impl<'a, T, F> Deref for Read<'a, T, F> where
    T: Resource
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type Target = T

The resulting type after dereferencing.

impl<'a, 'b, T> ParJoin for &'a Read<'b, T> where
    &'a T: ParJoin,
    T: Resource
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fn par_join(self) -> JoinParIter<Self> where
    Self: Sized
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Create a joined parallel iterator over the contents.

impl<'a, 'b, T> Join for &'a Read<'b, T> where
    &'a T: Join,
    T: Resource
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type Type = <&'a T as Join>::Type

Type of joined components.

type Value = <&'a T as Join>::Value

Type of joined storages.

type Mask = <&'a T as Join>::Mask

Type of joined bit mask.

Important traits for JoinIter<J>
fn join(self) -> JoinIter<Self> where
    Self: Sized
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Create a joined iterator over the contents.

fn maybe(self) -> MaybeJoin<Self> where
    Self: Sized
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Returns a Join-able structure that yields all indices, returning None for all missing elements and Some(T) for found elements. Read more

Auto Trait Implementations

impl<'a, T, F> Unpin for Read<'a, T, F> where
    F: Unpin

impl<'a, T, F> Sync for Read<'a, T, F> where
    F: Sync,
    T: Sync

impl<'a, T, F> Send for Read<'a, T, F> where
    F: Send,
    T: Sync

impl<'a, T, F = DefaultProvider> !UnwindSafe for Read<'a, T, F>

impl<'a, T, F = DefaultProvider> !RefUnwindSafe for Read<'a, T, F>

Blanket Implementations

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
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impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
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type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> Borrow<T> for T where
    T: ?Sized
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impl<T> BorrowMut<T> for T where
    T: ?Sized
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impl<T> Any for T where
    T: 'static + ?Sized
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impl<'a, T> DynamicSystemData<'a> for T where
    T: SystemData<'a>, 
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type Accessor = StaticAccessor<T>

The accessor of the SystemData, which specifies the read and write dependencies and does the fetching. Read more

impl<T> Resource for T where
    T: Any + Send + Sync
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impl<T> Any for T where
    T: Any
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impl<T> Event for T where
    T: Send + Sync + 'static, 
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