A small snippet with cppcheck FP

cppcheck FP

	template<class... Args>
	std::pair<TransportType *, bool> get_or_create(
		SocketAddress const &addr,
		Args&&... args
	) {
		auto [iter, res] = transport_map.try_emplace(
			addr,
			std::forward<Args>(args)...
		);
		return std::make_pair(&iter->second, res);
	}

Here's the diagnostic from cppcheck:

File.hpp:32:20: style: Variable 'transport_map.try_emplace' is reassigned a value before the old one has been used. [redundantAssignment]
  auto [iter, res] = transport_map.try_emplace(
                   ^
File.hpp:32:20: note: Variable 'transport_map.try_emplace' is reassigned a value before the old one has been used.
  auto [iter, res] = transport_map.try_emplace(
                   ^
File.hpp:32:20: note: Variable 'transport_map.try_emplace' is reassigned a value before the old one has been used.
  auto [iter, res] = transport_map.try_emplace(
                   ^