Struct Mapping 

pub struct Mapping<T>(/* private fields */);

A mapping between values and IDs.

This structure allows for bidirectional lookup between values and their assigned numeric IDs, with interior mutability for shared access.

Implementations

impl<T: Ord + Clone> Mapping<T>

pub fn new() -> Self

Creates a new empty mapping.

pub fn register(&self, value: T) -> Id

Registers a new value in the mapping and returns its assigned ID.

pub fn try_to_id(&self, value: &T) -> Option<Id>

Attempts to find the ID for a given value.

pub fn to_id(&self, value: T) -> Id

Gets the ID for a value, registering it if not already present.

pub fn to_data(&self, id: Id) -> Option<T>

Retrieves the data associated with an ID.

pub fn binding(&self, source: &Binding<T>) -> Binding<Id>

where T: 'static,

Creates a binding that maps between a value binding and an ID binding.

This is useful for reactive UI systems where you need to work with IDs rather than the actual values but still maintain synchronization.

Panics

Panics if the provided Id does not correspond to any value in the mapping.

Trait Implementations

impl<T> Clone for Mapping<T>

fn clone(&self) -> Self

Creates a new reference to the same underlying mapping.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Mapping<T>

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

Formats the value using the given formatter.

impl<T: Ord + Clone> Default for Mapping<T>

fn default() -> Self

Creates a new empty mapping.