from_json() [10/19]

template<typename BasicJsonType , typename Key , typename Value , typename Hash , typename KeyEqual , typename Allocator , typename = enable_if_t < !std::is_constructible < typename BasicJsonType::string_t, Key >::value >>

void nlohmann::detail::from_json	(	const BasicJsonType &	j,
		std::unordered_map< Key, Value, Hash, KeyEqual, Allocator > &	m
	)

Definition at line 4311 of file json.hpp.

{
    if (JSON_HEDLEY_UNLIKELY(!j.is_array()))
    {
        JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(j.type_name()), j));
    }
 
    m.clear();
 
    for (const auto &p : j)
    {
        if (JSON_HEDLEY_UNLIKELY(!p.is_array()))
        {
            JSON_THROW(type_error::create(302, "type must be array, but is " + std::string(p.type_name()), j));
        }
 
        m.emplace(p.at(0).template get<Key>(), p.at(1).template get<Value>());
    }
}