Enum Reason 

pub enum Reason {
    NotANumber {
        at: usize,
    },
    Worse {
        than: f64,
        at: usize,
    },
    OutOfBounds {
        value: f64,
        bound: f64,
    },
    NotImproving {
        since: usize,
        steps: usize,
    },
}

Why a trial is not worth another epoch. Structured and not a string, because how many were pruned, and for which of the three reasons is the question you ask of a search that pruned too much.

Variants

NotANumber

It reported something that is not a number. Every scheme prunes this.

Fields

at: usize

Which report.

Worse

Worse at this step than the bar the others set.

Fields

than: f64

The bar it did not clear.

at: usize

Which report.

OutOfBounds

Outside the bounds that were declared hopeless.

Fields

value: f64

What it reported.

bound: f64

The bound it crossed.

NotImproving

It has not improved on its own best for long enough.

Fields

since: usize

The report its best is from.

steps: usize

How many without an improvement were allowed.

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 Debug for Reason

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

Formats the value using the given formatter.

impl Display for Reason

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

Formats the value using the given formatter.

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 StructuralPartialEq for Reason