Function foreachpair

src/openssl.cpp:430–437

  map<string, Option<string>> environments =
      ssl_flags->extract("LIBPROCESS_SSL_");
  foreachpair (
      const string& key, const Option<string>& value, environment_ssl) {
    if (environments.count(key) > 0 && environments.at(key) != value) {
      LOG(WARNING) << "Mismatched values for SSL environment variables "
                   << "SSL_" << key << " and "
                   << "LIBPROCESS_SSL_" << key;
    }
  }
  environments.insert(environment_ssl.begin(), environment_ssl.end());

  Try<flags::Warnings> load = ssl_flags->load(environments);