Struct ContourStats 

pub struct ContourStats {
    pub threshold: f64,
    pub expanded: usize,
    pub new_unique: usize,
    pub reexpanded: usize,
    pub generated: usize,
    pub threshold_prunes: usize,
    pub cycle_prunes: usize,
    pub transposition_prunes: usize,
    pub max_depth: usize,
}

Per-contour (per-threshold-iteration) statistics for IDA* diagnostics.

Each contour corresponds to one depth-first search pass at a fixed f-cost threshold. Tracking per-contour effort reveals how re-expansion grows across successive thresholds and where the budget is consumed.

Fields

threshold: f64

The f-cost threshold used for this contour.

expanded: usize

Nodes expanded during this contour (includes re-expansions).

new_unique: usize

Nodes expanded here that were never expanded in any prior contour.

reexpanded: usize

Nodes expanded here that were already expanded in a prior contour.

generated: usize

Nodes generated (pushed onto the DFS stack) during this contour.

threshold_prunes: usize

Nodes pruned by f > threshold during this contour.

cycle_prunes: usize

Nodes pruned by the current-path cycle check during this contour.

transposition_prunes: usize

Nodes pruned by transposition (cost) comparison during this contour.

max_depth: usize

Maximum recursion depth reached during this contour.

Trait Implementations

impl Clone for ContourStats

fn clone(&self) -> ContourStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ContourStats

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

Formats the value using the given formatter.

impl Default for ContourStats

fn default() -> ContourStats

Returns the “default value” for a type.

impl PartialEq for ContourStats

fn eq(&self, other: &ContourStats) -> 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 Copy for ContourStats

impl StructuralPartialEq for ContourStats