Struct Field 

pub struct Field {
    pub label: String,
    pub ty: FieldType,
    pub min: usize,
    pub max: Option<usize>,
}

One named, cardinality-bound field slot of a record: label of type, occurring [min, max] times (max = None is unbounded).

Fields

label: String

The label of the field.

ty: FieldType

The field’s type.

min: usize

Minimum occurrence count required.

max: Option<usize>

Maximum occurrence count allowed (None indicates unbounded cardinality).

Implementations

impl Field

pub fn new( label: impl Into<String>, ty: impl Into<FieldType>, min: usize, max: Option<usize>, ) -> Result<Self, SchemaError>

Construct a new Field with label, type, and cardinality bounds [min, max] (spec §3, §3.3).

pub fn required( label: impl Into<String>, ty: impl Into<FieldType>, ) -> Result<Self, SchemaError>

A required, exactly-once field ([1,1]) – the common case.

pub fn cardinality_str(&self) -> String

Human-readable description of this field’s cardinality bounds.

Trait Implementations

impl Clone for Field

fn clone(&self) -> Field

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Field

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

Formats the value using the given formatter.

impl Eq for Field

impl Hash for Field

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Field

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