Struct OrderedMap 

pub struct OrderedMap { /* private fields */ }

An insertion-ordered string→Value map.

Implementations

impl OrderedMap

pub fn new() -> Self

An empty map.

pub fn len(&self) -> usize

The number of entries.

pub fn is_empty(&self) -> bool

Whether the map has no entries.

pub fn get(&self, key: &str) -> Option<&Value>

The value for key, if present.

pub fn contains_key(&self, key: &str) -> bool

Whether key is present.

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

Insert or update. A new key is appended; an existing key keeps its original position and only its value is replaced (Python semantics).

pub fn remove(&mut self, key: &str) -> Option<Value>

Remove key, returning its value if it was present. The remaining entries keep their relative order.

pub fn clear(&mut self)

Drop every entry.

pub fn iter(&self) -> impl Iterator<Item = &(String, Value)>

Iterate entries in insertion order.

Trait Implementations

impl Debug for OrderedMap

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

Formats the value using the given formatter.

impl Default for OrderedMap

fn default() -> OrderedMap

Returns the “default value” for a type.