Enum AprenderError 

pub enum AprenderError {
    DimensionMismatch {
        expected: String,
        actual: String,
    },
    SingularMatrix {
        det: f64,
    },
    ConvergenceFailure {
        iterations: usize,
        final_loss: f64,
    },
    InvalidHyperparameter {
        param: String,
        value: String,
        constraint: String,
    },
    BackendUnavailable {
        backend: String,
    },
    Io(Error),
    Serialization(String),
    Other(String),
}

Main error type for Aprender operations.

Provides detailed context about failures including dimension mismatches, singular matrices, convergence issues, and invalid hyperparameters.

Examples

use aprender::error::AprenderError;

let err = AprenderError::DimensionMismatch {
    expected: "100x10".to_string(),
    actual: "100x5".to_string(),
};
assert!(err.to_string().contains("dimension mismatch"));

Variants

DimensionMismatch

Matrix/vector dimensions don’t match for the operation.

Fields

expected: String

Expected dimensions description

actual: String

Actual dimensions found

SingularMatrix

Matrix is singular (non-invertible).

Fields

det: f64

Determinant value (close to zero)

ConvergenceFailure

Optimization failed to converge within iteration limit.

Fields

iterations: usize

Number of iterations attempted

final_loss: f64

Final loss value

InvalidHyperparameter

Invalid hyperparameter value provided.

Fields

param: String

Parameter name

value: String

Provided value

constraint: String

Constraint description

BackendUnavailable

Requested compute backend is not available.

Fields

backend: String

Backend name (e.g., “GPU”, “AVX-512”)

Io(Error)

I/O error (file not found, permission denied, etc.).

Serialization(String)

Serialization/deserialization error.

Other(String)

Generic error with string message.

Trait Implementations

impl Debug for AprenderError

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

Formats the value using the given formatter.

impl Display for AprenderError

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

Formats the value using the given formatter.

impl Error for AprenderError

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<&str> for AprenderError

fn from(msg: &str) -> Self

Converts to this type from the input type.

impl From<Error> for AprenderError

fn from(err: Error) -> Self

Converts to this type from the input type.

impl From<String> for AprenderError

fn from(msg: String) -> Self

Converts to this type from the input type.

impl PartialEq<&str> for AprenderError

fn eq(&self, other: &&str) -> 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 PartialEq<AprenderError> for &str

fn eq(&self, other: &AprenderError) -> 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.