Enum Reason 

pub enum Reason {
    Done,
    TimeLimitReached,
    LowerBoundConstrained,
    MaxDepthReached,
    NotEnoughSupport,
    NoCandidates,
    PureNode,
    FromSpecializedAlgorithm,
    RuleReason,
    None,
}

Why the search stopped at a node.

Variants

Done

The node was fully explored.

TimeLimitReached

The time limit was reached.

LowerBoundConstrained

The node’s lower bound reaches its upper bound: no subtree can help.

MaxDepthReached

The node is at the maximum depth and becomes a leaf.

NotEnoughSupport

The node has too few instances to be split.

NoCandidates

No feature can split the node.

PureNode

The node has zero error as a leaf.

FromSpecializedAlgorithm

The node was solved by the depth-2 solver.

RuleReason

A relaxable search rule cut the search; a later pass may go further.

None

No reason recorded.

Trait Implementations

impl Clone for Reason

fn clone(&self) -> Reason

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Reason

impl Debug for Reason

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

Formats the value using the given formatter.

impl Default for Reason

fn default() -> Reason

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Reason

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Reason

impl PartialEq for Reason

fn eq(&self, other: &Reason) -> 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 Serialize for Reason

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Reason