Struct Schema 

pub struct Schema { /* private fields */ }

Ordered list of field definitions with fast name→index lookup.

Implementations

impl Schema

pub fn new() -> Self

Creates an empty schema.

pub fn add_field(&mut self, def: FieldDef)

Add a field. Duplicate names are silently ignored.

pub fn fields(&self) -> &[FieldDef]

Returns all field definitions in schema order.

pub fn len(&self) -> usize

Returns the number of fields in the schema.

pub fn is_empty(&self) -> bool

Returns true when the schema has no fields.

pub fn field_index(&self, name: &str) -> Option<usize>

Returns the positional index for a field name.

pub fn field(&self, name: &str) -> Option<&FieldDef>

Returns the field definition for a field name.

Trait Implementations

impl Clone for Schema

fn clone(&self) -> Schema

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Schema

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

Formats the value using the given formatter.

impl Default for Schema

fn default() -> Schema

Returns the “default value” for a type.