Adl Bridging

In Outcome v2.2 the ADL-based event hooks were replaced with policy-based event hooks (next page). The code in this section is still valid in v2.2 onwards, it’s just that ADL is no longer used to find the hooks. In a previous section, we used the failure_info type to create the ADL bridge into the namespace where the ADL discovered outcome_throw_as_system_error_with_payload() function was to be found. Here we do the same, but more directly by creating a thin clone of std::error_code into the local namespace. »