int64_t TryGetInteger()

in blogs/sept-2021/converter.cc [43:50]


int64_t TryGetInteger(const std::map<Variant, Variant>& from, const char* key) {
  auto it = from.find(Variant(key));
  if (it == from.end() || !it->second.is_int64()) {
    return 0;
  }

  return it->second.int64_value();
}