# setTrue

Set the current state of a RefBoolean to true.

## Signatures

```ts
export declare const setTrue: <E, R>(ref: RefBoolean<E, R>) => Effect.Effect<boolean, E, R>;
```

## Why

Keeps set true atomic with respect to competing RefSubject writes instead of splitting the read
and replacement into separate effects.

## Ownership and lifetime

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