.TH "std::any" 3cxx "libstdc++" \" -*- nroff -*-
.ad l
.nh
.SH NAME
std::any \- A type-safe container of any type\&.  

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

.in +1c
.ti -1c
.RI "constexpr \fBany\fP () noexcept"
.br
.RI "Default constructor, creates an empty object\&. "
.ti -1c
.RI "template<\fBtypename\fP _Tp , \fBtypename\fP \fB_VTp\fP  = _Decay_if_not_any<_Tp>, \fBtypename\fP \fB_Mgr\fP  = _Manager<_VTp>, \fBenable_if_t\fP< is_copy_constructible_v< \fB_VTp\fP > &&!__is_in_place_type_v< \fB_VTp\fP >, bool >  = true> \fBany\fP (_Tp &&__value)"
.br
.RI "Construct with a copy of \fC__value\fP as the contained object\&. "
.ti -1c
.RI "\fBany\fP (\fBany\fP &&__other) noexcept"
.br
.RI "Move constructor, transfer the state from \fC__other\fP\&. "
.ti -1c
.RI "\fBany\fP (const \fBany\fP &__other)"
.br
.RI "Copy constructor, copies the state of \fC__other\fP\&. "
.ti -1c
.RI "template<\fBtypename\fP _Tp , typename\&.\&.\&. _Args, \fBtypename\fP \fB_VTp\fP  = decay_t<_Tp>, \fBtypename\fP \fB_Mgr\fP  = _Manager<_VTp>, __any_constructible_t< \fB_VTp\fP, \fB_Args\fP &&\&.\&.\&. >  = false> \fBany\fP (in_place_type_t< _Tp >, \fB_Args\fP &&\&.\&.\&. \fB__args\fP)"
.br
.RI "Construct with an object created from \fC__args\fP as the contained object\&. "
.ti -1c
.RI "template<\fBtypename\fP _Tp , \fBtypename\fP _Up , typename\&.\&.\&. _Args, \fBtypename\fP \fB_VTp\fP  = decay_t<_Tp>, \fBtypename\fP \fB_Mgr\fP  = _Manager<_VTp>, __any_constructible_t< \fB_VTp\fP, \fBinitializer_list\fP< _Up > &, \fB_Args\fP &&\&.\&.\&. >  = false> \fBany\fP (in_place_type_t< _Tp >, \fBinitializer_list\fP< _Up > \fB__il\fP, \fB_Args\fP &&\&.\&.\&. \fB__args\fP)"
.br
.RI "Construct with an object created from \fC__il\fP and \fC__args\fP as the contained object\&. "
.ti -1c
.RI "\fB~any\fP ()"
.br
.RI "Destructor, calls \fCreset()\fP "
.ti -1c
.RI "template<\fBtypename\fP _Tp , typename\&.\&.\&. _Args> __emplace_t< \fBdecay_t\fP< _Tp >, _Args\&.\&.\&. > \fBemplace\fP (\fB_Args\fP &&\&.\&.\&. \fB__args\fP)"
.br
.RI "Emplace with an object created from \fC__args\fP as the contained object\&. "
.ti -1c
.RI "template<\fBtypename\fP _Tp , \fBtypename\fP _Up , typename\&.\&.\&. _Args> __emplace_t< \fBdecay_t\fP< _Tp >, \fBinitializer_list\fP< _Up > &, \fB_Args\fP &&\&.\&.\&. > \fBemplace\fP (\fBinitializer_list\fP< _Up > \fB__il\fP, \fB_Args\fP &&\&.\&.\&. \fB__args\fP)"
.br
.RI "Emplace with an object created from \fC__il\fP and \fC__args\fP as the contained object\&. "
.ti -1c
.RI "bool \fBhas_value\fP () const noexcept"
.br
.RI "Reports whether there is a contained object or not\&. "
.ti -1c
.RI "template<\fBtypename\fP _Tp > \fBenable_if_t\fP< \fBis_copy_constructible\fP< \fB_Decay_if_not_any\fP< _Tp > >::value, \fBany\fP & > \fBoperator=\fP (_Tp &&\fB__rhs\fP)"
.br
.RI "Store a copy of \fC__rhs\fP as the contained object\&. "
.ti -1c
.RI "\fBany\fP & \fBoperator=\fP (\fBany\fP &&\fB__rhs\fP) noexcept"
.br
.RI "Move assignment operator\&. "
.ti -1c
.RI "\fBany\fP & \fBoperator=\fP (const \fBany\fP &\fB__rhs\fP)"
.br
.RI "Copy the state of another object\&. "
.ti -1c
.RI "\fBvoid\fP \fBreset\fP () noexcept"
.br
.RI "If not empty, destroy the contained object\&. "
.ti -1c
.RI "\fBvoid\fP \fBswap\fP (\fBany\fP &\fB__rhs\fP) noexcept"
.br
.RI "Exchange state with another object\&. "
.ti -1c
.RI "const \fBtype_info\fP & \fBtype\fP () const noexcept"
.br
.RI "The \fCtypeid\fP of the contained object, or \fCtypeid(void)\fP if empty\&. "
.in -1c
.SH "Detailed Description"
.PP 
A type-safe container of any type\&. 

An \fCany\fP object's state is either empty or it stores a contained object of CopyConstructible type\&.
.PP
\fBSince\fP
.RS 4
C++17 
.RE
.PP

.SH "Constructor & Destructor Documentation"
.PP 
.SS "constexpr std::any::any ()\fC [inline]\fP, \fC [constexpr]\fP, \fC [noexcept]\fP"

.PP
Default constructor, creates an empty object\&. 
.SS "std::any::any (const \fBany\fP & __other)\fC [inline]\fP"

.PP
Copy constructor, copies the state of \fC__other\fP\&. 
.SS "std::any::any (\fBany\fP && __other)\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Move constructor, transfer the state from \fC__other\fP\&. 
.PP
\fBPostcondition\fP
.RS 4
\fC!__other\fP\&.has_value() (this postcondition is a GNU extension) 
.RE
.PP

.SS "template<\fBtypename\fP _Tp , \fBtypename\fP \fB_VTp\fP  = _Decay_if_not_any<_Tp>, \fBtypename\fP \fB_Mgr\fP  = _Manager<_VTp>, \fBenable_if_t\fP< is_copy_constructible_v< \fB_VTp\fP > &&!__is_in_place_type_v< \fB_VTp\fP >, bool >  = true> std::any::any (_Tp && __value)\fC [inline]\fP"

.PP
Construct with a copy of \fC__value\fP as the contained object\&. 
.SS "template<\fBtypename\fP _Tp , typename\&.\&.\&. _Args, \fBtypename\fP \fB_VTp\fP  = decay_t<_Tp>, \fBtypename\fP \fB_Mgr\fP  = _Manager<_VTp>, __any_constructible_t< \fB_VTp\fP, \fB_Args\fP &&\&.\&.\&. >  = false> std::any::any (in_place_type_t< _Tp >, \fB_Args\fP &&\&.\&.\&. __args)\fC [inline]\fP, \fC [explicit]\fP"

.PP
Construct with an object created from \fC__args\fP as the contained object\&. 
.SS "template<\fBtypename\fP _Tp , \fBtypename\fP _Up , typename\&.\&.\&. _Args, \fBtypename\fP \fB_VTp\fP  = decay_t<_Tp>, \fBtypename\fP \fB_Mgr\fP  = _Manager<_VTp>, __any_constructible_t< \fB_VTp\fP, \fBinitializer_list\fP< _Up > &, \fB_Args\fP &&\&.\&.\&. >  = false> std::any::any (in_place_type_t< _Tp >, \fBinitializer_list\fP< _Up > __il, \fB_Args\fP &&\&.\&.\&. __args)\fC [inline]\fP, \fC [explicit]\fP"

.PP
Construct with an object created from \fC__il\fP and \fC__args\fP as the contained object\&. 
.SS "std::any::~any ()\fC [inline]\fP"

.PP
Destructor, calls \fCreset()\fP 
.SH "Member Function Documentation"
.PP 
.SS "template<\fBtypename\fP _Tp , typename\&.\&.\&. _Args> __emplace_t< \fBdecay_t\fP< _Tp >, _Args\&.\&.\&. > std::any::emplace (\fB_Args\fP &&\&.\&.\&. __args)\fC [inline]\fP"

.PP
Emplace with an object created from \fC__args\fP as the contained object\&. 
.SS "template<\fBtypename\fP _Tp , \fBtypename\fP _Up , typename\&.\&.\&. _Args> __emplace_t< \fBdecay_t\fP< _Tp >, \fBinitializer_list\fP< _Up > &, \fB_Args\fP &&\&.\&.\&. > std::any::emplace (\fBinitializer_list\fP< _Up > __il, \fB_Args\fP &&\&.\&.\&. __args)\fC [inline]\fP"

.PP
Emplace with an object created from \fC__il\fP and \fC__args\fP as the contained object\&. 
.SS "bool std::any::has_value () const\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Reports whether there is a contained object or not\&. 
.SS "template<\fBtypename\fP _Tp > \fBenable_if_t\fP< \fBis_copy_constructible\fP< \fB_Decay_if_not_any\fP< _Tp > >::value, \fBany\fP & > std::any::operator= (_Tp && __rhs)\fC [inline]\fP"

.PP
Store a copy of \fC__rhs\fP as the contained object\&. 
.SS "\fBany\fP & std::any::operator= (\fBany\fP && __rhs)\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Move assignment operator\&. 
.PP
\fBPostcondition\fP
.RS 4
\fC!__rhs\fP\&.has_value() (not guaranteed for other implementations) 
.RE
.PP

.SS "\fBany\fP & std::any::operator= (const \fBany\fP & __rhs)\fC [inline]\fP"

.PP
Copy the state of another object\&. 
.SS "\fBvoid\fP std::any::reset ()\fC [inline]\fP, \fC [noexcept]\fP"

.PP
If not empty, destroy the contained object\&. 
.SS "\fBvoid\fP std::any::swap (\fBany\fP & __rhs)\fC [inline]\fP, \fC [noexcept]\fP"

.PP
Exchange state with another object\&. 
.SS "const \fBtype_info\fP & std::any::type () const\fC [inline]\fP, \fC [noexcept]\fP"

.PP
The \fCtypeid\fP of the contained object, or \fCtypeid(void)\fP if empty\&. 

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