std::_maybe_unary_or_binary_function(3) centos man page | unix.com

std::_Maybe_unary_or_binary_function< _Res, _ArgTypes >(3)   Library Functions Manual	std::_Maybe_unary_or_binary_function< _Res, _ArgTypes >(3)

NAME
       std::_Maybe_unary_or_binary_function< _Res, _ArgTypes > -

SYNOPSIS
Detailed Description
   template<typename _Res, typename... _ArgTypes>struct std::_Maybe_unary_or_binary_function< _Res, _ArgTypes >
       Derives from unary_function or binary_function, or perhaps nothing, depending on the number of arguments provided. The primary template is
       the basis case, which derives nothing.

       Definition at line 527 of file functional.

Author
       Generated automatically by Doxygen for libstdc++ from the source code.

libstdc++							  Tue Jun 10 2014	std::_Maybe_unary_or_binary_function< _Res, _ArgTypes >(3)