Method clear

packages/lib/std/src/observables.ts:84–89

(procedure?: Procedure<T>)

    }

    clear(procedure?: Procedure<T>): void {
        if (this.#option.isEmpty()) {return}
        if (isDefined(procedure)) {procedure(this.#option.unwrap())}
        this.#option = Option.None
        this.#notifier.notify(this)
    }

    assert(fail?: ValueOrProvider<string>): this {
        this.#option.assert(fail)