Struct fractal::utils::OngoingAsyncAction

pub struct OngoingAsyncAction<T> {
    strong: Rc<AsyncAction<T>>,
}

Helper type to keep track of ongoing async actions that can succeed in different functions.

This type can only have one strong reference and many weak references.

The strong reference should be dropped in the first function where the action succeeds. Then other functions can drop the weak references when they can’t be upgraded.

Fields

strong: Rc<AsyncAction<T>>

Implementations

impl<T> OngoingAsyncAction<T>

pub fn set(value: T) -> (Self, WeakOngoingAsyncAction<T>)

Create a new async action that sets the given value.

Returns both a strong and a weak reference.

pub fn remove() -> (Self, WeakOngoingAsyncAction<T>)

Create a new async action that removes a value.

Returns both a strong and a weak reference.

pub fn downgrade(&self) -> WeakOngoingAsyncAction<T>

Create a new weak reference to this async action.

pub fn action(&self) -> &AsyncAction<T>

The inner action.

pub fn as_value(&self) -> Option<&T>

Get the inner value, if any.

Trait Implementations

impl<T: Debug> Debug for OngoingAsyncAction<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.