Method empty

src/fl/stl/optional.h:41–41

    }

    bool empty() const FL_NOEXCEPT { return !mValue.template is<T>(); }
    bool has_value() const FL_NOEXCEPT { return !empty(); }  // std::optional compatibility
    T *ptr() FL_NOEXCEPT { return mValue.template ptr<T>(); }
    const T *ptr() const FL_NOEXCEPT { return mValue.template ptr<T>(); }