# isPositive

Check if the current state of a RefBigDecimal is positive.

## Signatures

```ts
export declare const isPositive: <E, R>(ref: RefBigDecimal<E, R>) => RefSubject.Computed<boolean, E, R>;
```

## Why

Check if the current state of a RefBigDecimal is positive. The operation remains attached to the
RefSubject's versioned state boundary.

## Ownership and lifetime

The is positive view retains no independent state. An Effect read samples the source once; Fx
observation follows later pushes and its observing Scope owns subscription cleanup.