Struct WeakMap 

pub struct WeakMap<K: Trace + ?Sized + 'static, V: Trace + 'static> { /* private fields */ }

A map that holds weak references to its keys and is traced by the garbage collector.

Implementations

impl<K: Trace + ?Sized, V: Trace> WeakMap<K, V>

pub fn new() -> Self

Creates a new WeakMap.

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

Inserts a key-value pair into the map.

pub fn remove(&mut self, key: &Gc<K>) -> bool

Removes a key from the map, returning true if the key was previously in the map.

pub fn contains_key(&self, key: &Gc<K>) -> bool

Returns true if the map contains a value for the specified key.

pub fn get<'a>(&'a self, key: &Gc<K>) -> Option<GcRef<'a, Ephemeron<K, V>>>

Returns a reference to the ephemeron corresponding to the key.

Trait Implementations

impl<K: Clone + Trace + ?Sized + 'static, V: Clone + Trace + 'static> Clone for WeakMap<K, V>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<K: Debug + Trace + ?Sized + 'static, V: Debug + Trace + 'static> Debug for WeakMap<K, V>

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

Formats the value using the given formatter.

impl<K: Default + Trace + ?Sized + 'static, V: Default + Trace + 'static> Default for WeakMap<K, V>

fn default() -> WeakMap<K, V>

Returns the “default value” for a type.

impl<K: Trace + ?Sized + 'static, V: Trace + 'static> Finalize for WeakMap<K, V>

fn finalize(&self)

Cleanup logic for a type.

impl<K: Trace + ?Sized + 'static, V: Trace + 'static> Trace for WeakMap<K, V>

unsafe fn trace(&self, tracer: &mut Tracer)

Marks all contained Gcs.

unsafe fn trace_non_roots(&self)

Trace handles located in GC heap, and mark them as non root.

fn run_finalizer(&self)

Runs Finalize::finalize on this object and all contained subobjects.