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Niels Lohmann
f9d4b51455
Besides detail::result_of_begin/end, which is_range and iterator_t use, the macro defined a namespace detail2 with a tag type, a catch-all overload and would_call_std_begin/end, plus would_call_std_begin/end structs directly in namespace nlohmann. Nothing has used them since they were added in #3020. Reduce the macro to its detail part. Without the trailing struct the ';' after the two invocations would be an empty declaration that -Wextra-semi flags, so drop it. macro_scope.hpp included meta/detected.hpp only for this macro; all users of detected.hpp include it (or type_traits.hpp) themselves, so remove the include. Behavior and ABI are unchanged. The undocumented, untested and unused names nlohmann::would_call_std_begin, nlohmann::would_call_std_end and namespace nlohmann::detail2 are no longer declared. Part of #5708 Signed-off-by: Niels Lohmann <mail@nlohmann.me>