Enum SyncValueFromError 

pub enum SyncValueFromError {
    CompleteWithoutData,
    Error(String),
    Pending,
    Teardown,
    TooManyValues,
    ValueTypeMismatch,
}

Host-boundary result for first_sync_value_from and single_sync_value_from.

Variants

CompleteWithoutData

The node completed before emitting a DATA value.

Error(String)

The node emitted a protocol ERROR before the helper could return a value.

Pending

The node stayed live after the synchronous subscribe/current-drain window.

Teardown

The node synchronously tore down without a successful value result.

TooManyValues

The node emitted more than one DATA value before completing.

ValueTypeMismatch

The typed node delivered DATA that could not be downcast to T.

Trait Implementations

impl Clone for SyncValueFromError

fn clone(&self) -> SyncValueFromError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SyncValueFromError

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

Formats the value using the given formatter.

impl Display for SyncValueFromError

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

Formats the value using the given formatter.

impl Error for SyncValueFromError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

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

Provides type-based access to context intended for error reports.

impl PartialEq for SyncValueFromError

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for SyncValueFromError

impl StructuralPartialEq for SyncValueFromError