[−][src]Struct async_injector::Ref
A variable allowing for the synchronized reading of avalue in the Injector.
This can be created through Injector::var or Injector::var_key.
Implementations
impl<T> Ref<T> where
T: Clone + Any + Send + Sync,
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T: Clone + Any + Send + Sync,
pub async fn read(&self) -> Option<RefReadGuard<'_, T>>
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Read the synchronized variable.
Examples
use std::error::Error; #[derive(Clone)] struct Database; #[tokio::main] async fn main() -> Result<(), Box<dyn Error>> { let injector = async_injector::Injector::new(); let database = injector.var::<Database>().await; assert!(database.read().await.is_none()); injector.update(Database).await; assert!(database.read().await.is_some()); Ok(()) }
pub async fn load(&self) -> Option<T>
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Load the synchronized variable. This clones the underlying value if it has been set.
Examples
use std::error::Error; #[derive(Clone)] struct Database; #[tokio::main] async fn main() -> Result<(), Box<dyn Error>> { let injector = async_injector::Injector::new(); let database = injector.var::<Database>().await; assert!(database.load().await.is_none()); injector.update(Database).await; assert!(database.load().await.is_some()); Ok(()) }
Trait Implementations
Auto Trait Implementations
impl<T> !RefUnwindSafe for Ref<T>
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impl<T> Send for Ref<T>
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impl<T> Sync for Ref<T>
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impl<T> Unpin for Ref<T> where
T: Unpin,
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T: Unpin,
impl<T> !UnwindSafe for Ref<T>
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,