Struct ResolvedMap 

pub struct ResolvedMap<K, V>
where
    K: IsEnabled,
{
    map: IntMap<K, V>,
    default: V,
}

A keyed lookup where an empty map returns the neutral default for every key, but a populated map is authoritative (present -> Some, absent -> None).

Fields

map: IntMap<K, V>

default: V

Implementations

impl<K, V> ResolvedMap<K, V>

where K: IsEnabled + Eq + Hash,

pub fn new(default: V) -> Self

Create an empty map (introspection mode) with the neutral value returned for every key.

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

Insert an authoritative value for key.

pub fn is_empty(&self) -> bool

Whether any authoritative data has been resolved.

pub fn default_value(&self) -> &V

The neutral default value handed back for every key while the map is empty.

pub fn get(&self, key: &K) -> Option<&V>

Resolve key under the empty-vs-populated contract.

pub fn get_mut(&mut self, key: &K) -> Option<&mut V>

Mutable access to an authoritative value; the neutral default is never handed out mutably.

Trait Implementations

impl<K, V: Clone> Clone for ResolvedMap<K, V>

where K: IsEnabled + Clone,

fn clone(&self) -> ResolvedMap<K, V>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<K, V: Debug> Debug for ResolvedMap<K, V>

where K: IsEnabled + Debug,

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

Formats the value using the given formatter.