Allow ADL for swapping Optional values #4569
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Some types support being swapped but may not have declared their
std::swap overloads when Poco/Optional.h is first included. This is the
case for instance with
#include <Poco/Optional.h>
#include <array>
using Problematic = Poco::Optional<std::array<int, 42> >;
With an unqualified call to swap, preceded by using std::swap, we allow
argument-dependent lookup to find suitable implementations of swap.
obiltschnig
approved these changes
Jun 3, 2024
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Some types support being swapped but may not have declared their
std::swapoverloads whenPoco/Optional.his first included. This is the case for instance withWith an unqualified call to
swap, preceded byusing std::swap, we allow argument-dependent lookup to find suitable implementations ofswap.