.TH "std::once_flag" 3cxx "libstdc++" \" -*- nroff -*-
.ad l
.nh
.SH NAME
std::once_flag \- once_flag  

.SH SYNOPSIS
.br
.PP
.PP
\fC#include <mutex>\fP
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "\fBconstexpr\fP \fBonce_flag\fP () \fBnoexcept\fP=\fBdefault\fP"
.br
.RI "Constructor\&. "
.ti -1c
.RI "\fBonce_flag\fP (\fBconst\fP \fBonce_flag\fP &)=\fBdelete\fP"
.br
.RI "Deleted copy constructor\&. "
.ti -1c
.RI "\fBonce_flag\fP & \fBoperator=\fP (\fBconst\fP \fBonce_flag\fP &)=\fBdelete\fP"
.br
.RI "Deleted assignment operator\&. "
.in -1c
.SS "Friends"

.in +1c
.ti -1c
.RI "template<\fBtypename\fP _Callable , typename\&.\&.\&. _Args> \fBvoid\fP \fBcall_once\fP (\fBonce_flag\fP &\fB__once\fP, _Callable &&__f, \fB_Args\fP &&\&.\&.\&. \fB__args\fP)"
.br
.RI "call_once "
.in -1c
.SH "Detailed Description"
.PP 
once_flag 
.PP
Definition at line \fB628\fP of file \fBmutex\fP\&.
.SH "Constructor & Destructor Documentation"
.PP 
.SS "\fBconstexpr\fP std::once_flag::once_flag ()\fC [constexpr]\fP, \fC [default]\fP, \fC [noexcept]\fP"

.PP
Constructor\&. 
.SS "std::once_flag::once_flag (\fBconst\fP \fBonce_flag\fP &)\fC [delete]\fP"

.PP
Deleted copy constructor\&. 
.SH "Member Function Documentation"
.PP 
.SS "\fBonce_flag\fP & std::once_flag::operator= (\fBconst\fP \fBonce_flag\fP &)\fC [delete]\fP"

.PP
Deleted assignment operator\&. 
.SH "Friends And Related Symbol Documentation"
.PP 
.SS "template<\fBtypename\fP _Callable , typename\&.\&.\&. _Args> \fBvoid\fP call_once (\fBonce_flag\fP & __once, _Callable && __f, \fB_Args\fP &&\&.\&.\&. __args)\fC [friend]\fP"

.PP
call_once 
.PP
Definition at line \fB666\fP of file \fBmutex\fP\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for libstdc++ from the source code\&.