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module WeakRef

: sig

A single-cell variant of the weak arrays in the standard library.

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exception EmptyWeakReference

An expired weak reference was accessed.

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type 'a t

The type of weak references..

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val make : 'a -> 'a t

Obtain a weak reference from a strong reference.

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val set : 'a t -> 'a -> unit

Update a weak reference.

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val get : 'a t -> 'a

Obtain a strong reference from a weak reference.

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val is_empty : 'a t -> bool

Whether a weak reference is still live.

end