is_error_type_enum<E, Enum>
A customisable integral constant type true for E types constructible from Enum types which are to receive error throwing no-value policies
Overridable: By template specialisation into the trait namespace.
Default: False. Specialisations exist for:
<boost/outcome/boost_result.hpp>boost::system::error_codetoboost::system::is_error_condition_enum<Enum>::value.
<boost/outcome/std_result.hpp>std::error_codetostd::is_error_condition_enum<Enum>::value.
Namespace: BOOST_OUTCOME_V2_NAMESPACE::trait
Header: <boost/outcome/trait.hpp>



