Struct AsyncValue 

pub struct AsyncValue<T, E = String> {
    pub value: Option<T>,
    pub status: AsyncStatus<E>,
}

A value and, separately, what is currently happening to it.

Splitting the two is what lets a failed refresh keep the last verified value on screen instead of replacing it with an error.

Fields

value: Option<T>

status: AsyncStatus<E>

Implementations

impl<T, E> AsyncValue<T, E>

pub fn loading() -> Self

pub fn ready(value: T) -> Self

pub fn refresh(&mut self)

pub fn fail_refresh(&mut self, error: E)

pub fn is_stale(&self) -> bool

Trait Implementations

impl<T: Clone, E: Clone> Clone for AsyncValue<T, E>

fn clone(&self) -> AsyncValue<T, E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug, E: Debug> Debug for AsyncValue<T, E>

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

Formats the value using the given formatter.

impl<T: Eq, E: Eq> Eq for AsyncValue<T, E>

impl<T: PartialEq, E: PartialEq> PartialEq for AsyncValue<T, E>

fn eq(&self, other: &AsyncValue<T, E>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<T: PartialEq, E: PartialEq> StructuralPartialEq for AsyncValue<T, E>