.TH "std::reference_wrapper< _Tp >" 3 "libstdc++" \" -*- nroff -*-
.ad l
.nh
.SH NAME
std::reference_wrapper< _Tp > \- Primary class template for reference_wrapper\&.  

.SH SYNOPSIS
.br
.PP
.PP
\fR#include <functional>\fP
.SS "Public Types"

.in +1c
.ti -1c
.RI "typedef _Tp \fBtype\fP"
.br
.in -1c
.SS "Public Member Functions"

.in +1c
.ti -1c
.RI "template<typename _Up, typename = __not_same<_Up>, typename = decltype(reference_wrapper::_S_fun(std::declval<_Up>()))> constexpr \fBreference_wrapper\fP (_Up &&__uref) noexcept(noexcept(reference_wrapper::_S_fun(\fBstd::declval\fP< _Up >())))"
.br
.ti -1c
.RI "\fBreference_wrapper\fP (const reference_wrapper &)=default"
.br
.ti -1c
.RI "constexpr _Tp & \fBget\fP () const noexcept"
.br
.ti -1c
.RI "constexpr \fBoperator _Tp &\fP () const noexcept"
.br
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.RI "template<typename\&.\&.\&. _Args> constexpr __invoke_result< _Tp &, _Args\&.\&.\&. >::type \fBoperator()\fP (_Args &&\&.\&.\&. __args) const noexcept(__is_nothrow_invocable< _Tp &, _Args\&.\&.\&. >::value)"
.br
.ti -1c
.RI "reference_wrapper & \fBoperator=\fP (const reference_wrapper &)=default"
.br
.in -1c
.SS "Friends"

.in +1c
.ti -1c
.RI "constexpr auto \fBoperator<=>\fP (reference_wrapper __x, const _Tp &__y)"
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.ti -1c
.RI "constexpr auto \fBoperator<=>\fP (reference_wrapper __x, reference_wrapper __y)"
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.ti -1c
.RI "constexpr auto \fBoperator<=>\fP (reference_wrapper __x, reference_wrapper< const _Tp > __y)"
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.ti -1c
.RI "constexpr bool \fBoperator==\fP (reference_wrapper __x, const _Tp &__y)"
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.ti -1c
.RI "constexpr bool \fBoperator==\fP (reference_wrapper __x, reference_wrapper __y)"
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.ti -1c
.RI "constexpr bool \fBoperator==\fP (reference_wrapper __x, reference_wrapper< const _Tp > __y)"
.br
.in -1c
.SS "Related Symbols"
(Note that these are not member symbols\&.) 
.PP
.RI "\fB\fP"
.br

.in +1c
.in +1c
.ti -1c
.RI "template<typename _Tp> constexpr reference_wrapper< _Tp > \fBref\fP (_Tp &__t) noexcept"
.br
.RI "Denotes a reference should be taken to a variable\&. "
.ti -1c
.RI "template<typename _Tp> constexpr reference_wrapper< const _Tp > \fBcref\fP (const _Tp &__t) noexcept"
.br
.RI "Denotes a const reference should be taken to a variable\&. "
.ti -1c
.RI "template<typename _Tp> constexpr reference_wrapper< _Tp > \fBref\fP (reference_wrapper< _Tp > __t) noexcept"
.br
.RI "std::ref overload to prevent wrapping a reference_wrapper "
.ti -1c
.RI "template<typename _Tp> constexpr reference_wrapper< const _Tp > \fBcref\fP (reference_wrapper< _Tp > __t) noexcept"
.br
.RI "std::cref overload to prevent wrapping a reference_wrapper "
.in -1c
.in -1c
.SH "Detailed Description"
.PP 

.SS "template<typename _Tp>
.br
class std::reference_wrapper< _Tp >"Primary class template for reference_wrapper\&. 
.SH "Friends And Related Symbol Documentation"
.PP 
.SS "template<typename _Tp> reference_wrapper< const _Tp > cref (const _Tp & __t)\fR [related]\fP"

.PP
Denotes a const reference should be taken to a variable\&. 
.SS "template<typename _Tp> reference_wrapper< const _Tp > cref (reference_wrapper< _Tp > __t)\fR [related]\fP"

.PP
std::cref overload to prevent wrapping a reference_wrapper 
.SS "template<typename _Tp> reference_wrapper< _Tp > ref (_Tp & __t)\fR [related]\fP"

.PP
Denotes a reference should be taken to a variable\&. 
.SS "template<typename _Tp> reference_wrapper< _Tp > ref (reference_wrapper< _Tp > __t)\fR [related]\fP"

.PP
std::ref overload to prevent wrapping a reference_wrapper 

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