Struct OrderedMap 

pub struct OrderedMap<V>(/* private fields */);

An ordered map that serialises as a JSON object.

serde_json::Map only holds Value, and option order matters for readability because it follows the caller’s own criteria order, so the pairs stay in a vector and are written out as an object.

Implementations

impl<V> OrderedMap<V>

pub fn new() -> Self

An empty map.

pub fn insert(&mut self, key: String, value: V)

Append a key, keeping insertion order.

pub fn is_empty(&self) -> bool

Whether no entry has been inserted.

pub fn len(&self) -> usize

How many entries were inserted.

Trait Implementations

impl<V: Debug> Debug for OrderedMap<V>

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

Formats the value using the given formatter.

impl<V> Default for OrderedMap<V>

fn default() -> Self

Returns the “default value” for a type.

impl<V: Serialize> Serialize for OrderedMap<V>

fn serialize<S: Serializer>(&self, serializer: S) -> Result<S::Ok, S::Error>

Serialize this value into the given Serde serializer.