How to iterate through a google protobuf map in C++?

Question

I have my map in the following form:

const google::protobuf::Map<string, nrtprofile::RedisNewsMetric> map=redisNewsMessage.ig();

How should I iterate through the map to get all the keys and corresponding values?

Answer 1

You iterate through a google::protobuf::Map in exactly the same way as a std::unordered_map.

for (auto & pair : map)
{
    doSomethingWithKey(pair.first);
    doSomethingWithValue(pair.second);
}

If you have a C++17 compiler, you can use a structured binding to split that further

for (auto & [key, value] : map)
{
    doSomethingWithKey(key);
    doSomethingWithValue(value);
}