Enum PlnError 

pub enum PlnError {
    AtomNotFound(String),
    InsufficientConfidence(f64),
    CyclicInference(Vec<String>),
    InvalidRule(String),
    MaxAtomsExceeded,
}

Errors produced by the PLN engine.

Variants

AtomNotFound(String)

An atom with the given ID was not found.

InsufficientConfidence(f64)

The derived confidence is below the configured threshold.

CyclicInference(Vec<String>)

Cycle detected while tracing inference chains.

InvalidRule(String)

The rule cannot be applied with the supplied premises.

MaxAtomsExceeded

The atom store has reached max_atoms.

Trait Implementations

impl Clone for PlnError

fn clone(&self) -> PlnError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PlnError

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

Formats the value using the given formatter.

impl Display for PlnError

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

Formats the value using the given formatter.

impl Error for PlnError

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 PlnError

fn eq(&self, other: &PlnError) -> 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 PlnError