double TryGetDouble()

in blogs/sept-2021/converter.cc [52:59]

• 7 lines of code
• 3 McCabe index (conditional complexity)

double TryGetDouble(const std::map<Variant, Variant>& from, const char* key) {
  auto it = from.find(Variant(key));
  if (it == from.end() || !it->second.is_double()) {
    return 0.0;
  }

  return it->second.double_value();
}