Struct Facade

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pub struct Facade { /* private fields */ }

Expand description

A Facade visits world resources from async futures.

A facade is a window into the world, by which an async future can interact with the world’s resources through Facade::visit, without causing resource contention with each other or the world’s systems.

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impl Facade

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pub async fn visit<D: Edges + Send + Sync + 'static, T>( &mut self, f: impl FnOnce(D) -> T, ) -> Result<T, GraphError>

Asyncronously visit system resources using a closure.

The closure may return data to the caller.

Note: Using a closure ensures that no fetched system resources are held over an await point, which would preclude world systems and other Facades from accessing them and susequently being able to run.

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pub fn count(&self) -> usize

Return the total number of facades.

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pub async fn visit_world_mut<T>( &mut self, f: impl FnOnce(&mut World) -> T + Send + Sync + 'static, ) -> Result<T, GraphError>
where T: Any + Send + Sync,

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impl Clone for Facade

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fn clone(&self) -> Facade

Returns a duplicate of the value. Read more

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

Performs copy-assignment from source. Read more

Auto Trait Implementations§

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impl UnwindSafe for Facade

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

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

Performs copy-assignment from self to dest. Read more

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more

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