Method if_object

src/value.cpp:227–233

    return *r;
}
const std::vector<value>* value::if_object() const
{
    auto* r = x ? x->if_array() : nullptr;
    assert(r == nullptr or
           std::none_of(r->begin(), r->end(), [](auto&& v) { return v.get_key().empty(); }));
    return r;
}

bool value::is_null() const { return x == nullptr; }