Enum SearchError 

pub enum SearchError {
    EmptyDataset,
    NoFeatures,
    UnpreparedDataset,
    InvalidParameter {
        name: &'static str,
        reason: String,
    },
    Data(DatasetError),
    Tree(TreeError),
}

A fit that could not start.

Variants

EmptyDataset

The dataset has no instances.

NoFeatures

The dataset has no feature columns.

UnpreparedDataset

sort_features and compute_unique_feature_values have not both run.

The search compares unique-value indices, so an unprepared dataset would silently produce a single leaf. Build datasets through Dataset::from_rows or DataReader, which both prepare them.

InvalidParameter

A parameter whose value cannot produce a meaningful search.

Fields

name: &'static str

reason: String

Data(DatasetError)

The dataset itself is malformed.

Tree(TreeError)

The search produced a tree that does not hold the tree invariant. This is a bug in the crate, not in the caller’s input.

Trait Implementations

impl Clone for SearchError

fn clone(&self) -> SearchError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SearchError

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

Formats the value using the given formatter.

impl Display for SearchError

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

Formats the value using the given formatter.

impl Eq for SearchError

impl Error for SearchError

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 From<DatasetError> for SearchError

fn from(err: DatasetError) -> Self

Converts to this type from the input type.

impl From<TreeError> for SearchError

fn from(err: TreeError) -> Self

Converts to this type from the input type.

impl PartialEq for SearchError

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