Struct GcWeak 

pub struct GcWeak<T: Trace + 'static>(pub Gc<T>);

A weak handle to a GcRef<T>. Phase D-1 placeholder; D-2 will give this real semantics (None once the referent is swept).

Tuple Fields

0: Gc<T>

Implementations

impl<T: Trace + 'static> GcWeak<T>

pub fn upgrade(&self) -> Option<GcRef<T>>

Try to promote to a strong reference. Phase D-1: always Some (weak semantics are not yet implemented).

pub fn strong_count(&self) -> usize

Strong reference count of the target. Phase D-1: always 1.

Trait Implementations

impl<T: Trace + 'static> Clone for GcWeak<T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug + Trace + 'static> Debug for GcWeak<T>

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

Formats the value using the given formatter.