Enum PropagaError 

pub enum PropagaError {
    DomainEmpty(VariableId),
    UnknownVariable(VariableId),
    UnknownPropagator,
}

Errors returned by the propagation engine.

Variants

DomainEmpty(VariableId)

A variable domain became empty during propagation.

UnknownVariable(VariableId)

A variable handle does not exist in the engine.

UnknownPropagator

A propagator handle does not exist in the engine.

Trait Implementations

impl Debug for PropagaError

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

Formats the value using the given formatter.

impl Display for PropagaError

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

Formats the value using the given formatter.

impl Eq for PropagaError

impl Error for PropagaError

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 PropagaError

fn eq(&self, other: &PropagaError) -> 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 StructuralPartialEq for PropagaError