Struct Map

pub struct Map { /* private fields */ }

A map of fields and their values, sorted by order of insertion.

Implementations

impl Map

pub fn new() -> Self

Creates a new empty Map.

pub fn required<T>( &mut self, key: &str, decoder: impl Decoder<Output = T>, ) -> Result<T>

Decodes the given field of the Map using the given Decoder.

pub fn optional<T>( &mut self, key: &str, decoder: impl Decoder<Output = T>, ) -> Result<Option<T>>

Decodes the given field of the Map using the given Decoder, if present.

pub fn tag(self, key: &str, value: impl Into<String>) -> Self

Inserts a field in the Map before all the other fields.

pub fn extend(self, other: Self) -> Self

Extends the Map with the fields of the given one.

pub fn into_value(self) -> Value

Converts the Map into a Value.

Trait Implementations

impl Clone for Map

fn clone(&self) -> Map

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Map

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

Formats the value using the given formatter.

impl Default for Map

fn default() -> Self

Returns the “default value” for a type.

impl From<Map> for Value

fn from(map: Map) -> Self

Converts to this type from the input type.

impl FromIterator<(Value, Value)> for Map

fn from_iter<T: IntoIterator<Item = (Value, Value)>>(iter: T) -> Self

Creates a value from an iterator.

impl PartialEq for Map

fn eq(&self, other: &Map) -> 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 Eq for Map

impl StructuralPartialEq for Map