.TH "std::experimental::nullopt_t" 3cxx "libstdc++" \" -*- nroff -*- .ad l .nh .SH NAME std::experimental::nullopt_t \- Tag type to disengage optional objects\&. .SH SYNOPSIS .br .PP .PP \fC#include \fP .SS "Public Types" .in +1c .ti -1c .RI "enum class \fB_Construct\fP { \fB_Token\fP }" .br .in -1c .SS "Public Member Functions" .in +1c .ti -1c .RI "\fBconstexpr\fP \fBnullopt_t\fP (_Construct)" .br .in -1c .SH "Detailed Description" .PP Tag type to disengage optional objects\&. .SH "Author" .PP Generated automatically by Doxygen for libstdc++ from the source code\&.