__gnu_pbds::detail::maybe_null_type< Key, Mapped, _Alloc, Store_Hash >(3) Library Functions Manual NAME __gnu_pbds::detail::maybe_null_type< Key, Mapped, _Alloc, Store_Hash > - Base class for conditionally defining a static data member. SYNOPSIS #include Inherited by __gnu_pbds::detail::types_traits< Key, Mapped, _Alloc, false >, __gnu_pbds::detail::types_traits< Key, Data, _Alloc, false >, __gnu_pbds::detail::value_type< Key, Mapped, _Alloc, false >, and __gnu_pbds::detail::types_traits< Key, Mapped, _Alloc, Store_Hash >. Detailed Description template struct __gnu_pbds::detail::maybe_null_type< Key, Mapped, _Alloc, Store_Hash >"Base class for conditionally defining a static data member. Author Generated automatically by Doxygen for libstdc++ from the source code. libstdc++ __gnu_pbds::detail::maybe_null_type< Key, Mapped, _Alloc, Store_Hash >(3)