Struct Extensions 

pub struct Extensions { /* private fields */ }

Type-erased extension map for passing executor-specific data through ActionParams without polluting the generic API surface.

Values are stored as Arc<dyn Any + Send + Sync> so cloning is cheap (Arc ref-count bump) and the map can cross thread boundaries (required by parallel.rs’s per-thread copies).

Implementations

impl Extensions

pub fn insert<T: Any + Send + Sync + 'static>(&mut self, value: T)

Insert a value of type T, replacing any previously inserted value of the same type.

pub fn get<T: Any + Send + Sync + 'static>(&self) -> Option<Arc<T>>

Retrieve a cloned Arc<T> for a value of type T, if one was inserted.

Trait Implementations

impl Clone for Extensions

fn clone(&self) -> Extensions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Extensions

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

Formats the value using the given formatter.

impl Default for Extensions

fn default() -> Extensions

Returns the “default value” for a type.