.TH "std::identity" 3cxx "Tue Jun 13 2023" "libstdc++" \" -*- nroff -*- .ad l .nh .SH NAME std::identity \- [func\&.identity] The identity function\&. .SH SYNOPSIS .br .PP .PP \fC#include \fP .SS "Public Types" .in +1c .ti -1c .RI "using \fBis_transparent\fP = __is_transparent" .br .in -1c .SS "Public Member Functions" .in +1c .ti -1c .RI "template constexpr _Tp && \fBoperator()\fP (_Tp &&__t) const noexcept" .br .in -1c .SH "Detailed Description" .PP [func\&.identity] The identity function\&. .SH "Author" .PP Generated automatically by Doxygen for libstdc++ from the source code\&.