# RefBoolean

A RefBoolean is a RefSubject specialized over a boolean value.

## Signatures

```ts
export interface RefBoolean<in out E = never, out R = never> extends RefSubject.RefSubject<boolean, E, R> {
}
```

## Why

Defines boolean state with the same current-read, pushed-update, and synchronized-write contract
as RefSubject.

## Ownership and lifetime

RefBoolean is a contract and performs no acquisition. Implementations retain the errors,
services, interruption, and Scope requirements expressed by its members.