Enum FeatureValue 

pub enum FeatureValue {
    Float(f64),
    Integer(i64),
    Boolean(bool),
    Categorical(String),
    Missing,
}

A polymorphic feature value that flows through the transform chain.

Variants

Float(f64)

Continuous floating-point scalar.

Integer(i64)

Integer scalar — coerced to f64 for numeric transforms.

Boolean(bool)

Boolean flag — coerced to 1.0 / 0.0 for numeric transforms.

Categorical(String)

Nominal string category — used by OneHotEncode and ImputeMode.

Missing

Absent / unknown value — consumed by imputer transforms.

Implementations

impl FeatureValue

pub fn type_name(&self) -> &'static str

Return the type name as a human-readable string (used in error messages).

pub fn as_f64(&self) -> Option<f64>

Coerce to f64 if the variant is numeric. Returns None for Categorical and Missing.

Trait Implementations

impl Clone for FeatureValue

fn clone(&self) -> FeatureValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FeatureValue

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

Formats the value using the given formatter.

impl PartialEq for FeatureValue

fn eq(&self, other: &FeatureValue) -> 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 FeatureValue