Enum Identifier 

pub enum Identifier {
    String(Arc<str>),
    Integer(i64),
}

A sortable identifier used to discriminate between array items – either a plain string label (“west”) or an integer (“2015”). Kept as a small union type (rather than always coercing to a string) so identifiers extracted from header labels render as the JSON type they actually are (2015, not "2015").

Variants

String(Arc<str>)

Integer(i64)

Implementations

impl Identifier

pub fn from_string(id: &str) -> Self

pub fn from_int_str(id: &str) -> Self

Parses id as an integer identifier. Only ever fed numeric segments already extracted from header labels (e.g. “2015” out of “longevity_2015_female”), where a parse failure would mean something has gone wrong upstream in the extraction itself, not in this value – confirmed as an acceptable fallback for that constrained calling context, unlike the general-purpose sanitize-don’t-guess rule this crate otherwise follows for arbitrary user input.

pub fn from_int(id: i64) -> Self

pub fn to_value(&self) -> Value

The serde_json::Value this identifier renders as when written into a field.

pub fn from_json(json: &Value) -> Option<Self>

Parses an Identifier from JSON – a plain JSON string becomes String, a plain JSON number becomes Integer, matching to_value’s own output shape so a round-trip through JSON is lossless for both variants.

Trait Implementations

impl Clone for Identifier

fn clone(&self) -> Identifier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Identifier

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

Formats the value using the given formatter.

impl Display for Identifier

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

Formats the value using the given formatter.

impl Eq for Identifier

impl Ord for Identifier

fn cmp(&self, other: &Identifier) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Identifier

fn eq(&self, other: &Identifier) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl PartialOrd for Identifier

fn partial_cmp(&self, other: &Identifier) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Identifier