# RefHashSet.clear

Clear all values from the RefHashSet.

## Signatures

```ts
export declare const clear: <V, E, R>(ref: RefHashSet<V, E, R>) => Effect.Effect<HashSet.HashSet<V>, E, R>;
```

## Why

Applies clear to the committed hash set value and publishes only the result, preserving its
element order and equality rules.

## Ownership and lifetime

Running clear performs one serialized hash set transition and resolves with its committed value.
It acquires no resource; failures and services remain those of the source ref.