Enum PromiseState 

pub enum PromiseState {
    Pending,
    Resolved(Value),
    Rejected(Error),
    Cancelled,
}

Lifecycle of a promise.

Variants

Pending

Waiting for its producing call.

Resolved(Value)

Resolved with a value.

Rejected(Error)

Failed; the original error is preserved so the class survives the hop.

Cancelled

Cancelled by the caller; never resolves.

Implementations

impl PromiseState

pub fn is_settled(&self) -> bool

Trait Implementations

impl Clone for PromiseState

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PromiseState

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

Formats the value using the given formatter.

impl PartialEq for PromiseState

fn eq(&self, other: &Self) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PromiseState