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binary_reader held bjd_optimized_type_markers and bjd_types_map as non-static const members (12 string_t objects for the type-name table), built and destroyed on every from_cbor/from_msgpack/from_bson/ from_ubjson/from_bon8/from_bjdata call even though only from_bjdata ever reads them. They also needed the #define/decltype/#undef workaround from #3637 and two NOLINTNEXTLINE suppressions, and binary_writer already carries the same two lists in another form (is_bjdata_excluded_type_marker() and a local std::map in write_bjdata_ndarray(), the latter removed by the item-4 commit), so the excluded-marker lists could drift apart. Replace bjd_optimized_type_markers with static constexpr is_bjd_excluded_optimized_type(char_int_type), using the same ||-chain as binary_writer's is_bjdata_excluded_type_marker(). Replace bjd_types_map with a non-constexpr static bjd_type_name(char_int_type) switch returning nullptr for an unknown marker (a C++11 constexpr function cannot contain a switch). Delete both JSON_BINARY_READER_MAKE_* macros, the bjd_type pair alias, the NOLINTNEXTLINE suppressions, detail::make_array() (no longer used anywhere), and the now-unused <algorithm> and <array> includes. Update the two call sites (the ND-array excluded-type check and the _ArrayType_ lookup) accordingly, and replace unit-bjdata.cpp's "LUT arrays are sorted" section, which only checked the two tables' internal ordering, with a check of all 12 type names and all 8 excluded markers against both new functions. #5711 item 1 Signed-off-by: Niels Lohmann <mail@nlohmann.me>