from_json() [5/19]

template<typename BasicJsonType , typename ConstructibleObjectType , enable_if_t< is_constructible_object_type< BasicJsonType, ConstructibleObjectType >::value, int > = 0>

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		ConstructibleObjectType &	obj
	)

Definition at line 4171 of file json.hpp.

{
    if (JSON_HEDLEY_UNLIKELY(!j.is_object()))
    {
        JSON_THROW(type_error::create(302, "type must be object, but is " + std::string(j.type_name()), j));
    }
 
    ConstructibleObjectType ret;
    const auto *inner_object = j.template get_ptr<const typename BasicJsonType::object_t *>();
    using value_type = typename ConstructibleObjectType::value_type;
    std::transform(
        inner_object->begin(), inner_object->end(),
        std::inserter(ret, ret.begin()),
        [](typename BasicJsonType::object_t::value_type const & p)
    {
        return value_type(p.first, p.second.template get<typename ConstructibleObjectType::mapped_type>());
    });
    obj = std::move(ret);
}