Enum DEError 

pub enum DEError {
    BoundsMismatch {
        lower_len: usize,
        upper_len: usize,
    },
    InvalidBounds {
        index: usize,
        lower: f64,
        upper: f64,
    },
    PopulationTooSmall {
        pop_size: usize,
    },
    InvalidMutationFactor {
        factor: f64,
    },
    InvalidCrossoverRate {
        rate: f64,
    },
    X0DimensionMismatch {
        expected: usize,
        got: usize,
    },
    IntegralityDimensionMismatch {
        expected: usize,
        got: usize,
    },
    InvalidConfig {
        message: String,
    },
}

Errors that can occur during Differential Evolution optimization.

Variants

BoundsMismatch

Lower and upper bounds have different lengths.

Fields

lower_len: usize

Length of the lower bounds array

upper_len: usize

Length of the upper bounds array

InvalidBounds

A lower bound exceeds its corresponding upper bound.

Fields

index: usize

Index of the invalid bound pair

lower: f64

The lower bound value

upper: f64

The upper bound value

PopulationTooSmall

Population size is too small (must be >= 4).

Fields

pop_size: usize

The invalid population size

InvalidMutationFactor

Mutation factor is out of valid range [0, 2].

Fields

factor: f64

The invalid mutation factor

InvalidCrossoverRate

Crossover rate is out of valid range [0, 1].

Fields

rate: f64

The invalid crossover rate

X0DimensionMismatch

Initial guess (x0) has wrong dimension.

Fields

expected: usize

Expected dimension

got: usize

Actual dimension provided

IntegralityDimensionMismatch

Integrality mask has wrong dimension.

Fields

expected: usize

Expected dimension

got: usize

Actual dimension provided

InvalidConfig

Generic invalid optimizer configuration.

Fields

message: String

Human-readable description of the invalid setting.

Implementations

impl DEError

pub fn is_bounds_error(&self) -> bool

Returns true if this is a bounds-related error.

This includes BoundsMismatch and InvalidBounds variants.

pub fn is_config_error(&self) -> bool

Returns true if this is a configuration-related error.

This includes PopulationTooSmall, InvalidMutationFactor, and InvalidCrossoverRate variants.

pub fn is_dimension_error(&self) -> bool

Returns true if this is a dimension mismatch error.

This includes X0DimensionMismatch and IntegralityDimensionMismatch.

Trait Implementations

impl Debug for DEError

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

Formats the value using the given formatter.

impl Display for DEError

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

Formats the value using the given formatter.

impl Error for DEError

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.