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std::reference_wrapper< _Tp >(3cxx) std::reference_wrapper< _Tp >(3cxx)

NAME

std::reference_wrapper< _Tp > - Primary class template for reference_wrapper.

SYNOPSIS

Public Types


typedef _Tp type

Public Member Functions


template<typename _Up , typename = __not_same<_Up>, typename = decltype(reference_wrapper::_S_fun(std::declval<_Up>()))> constexpr reference_wrapper (_Up &&__uref) noexcept(noexcept(reference_wrapper::_S_fun(std::declval< _Up >())))
reference_wrapper (const reference_wrapper &)=default
constexpr _Tp & get () const noexcept
constexpr operator _Tp & () const noexcept
template<typename... _Args> constexpr result_of< _Tp &(_Args &&...)>::type operator() (_Args &&... __args) const
reference_wrapper & operator= (const reference_wrapper &)=default

(Note that these are not member functions.)



template<typename _Tp > constexpr reference_wrapper< _Tp > ref (_Tp &__t) noexcept
Denotes a reference should be taken to a variable. template<typename _Tp > constexpr reference_wrapper< const _Tp > cref (const _Tp &__t) noexcept
Denotes a const reference should be taken to a variable. template<typename _Tp > constexpr reference_wrapper< _Tp > ref (reference_wrapper< _Tp > __t) noexcept
std::ref overload to prevent wrapping a reference_wrapper template<typename _Tp > constexpr reference_wrapper< const _Tp > cref (reference_wrapper< _Tp > __t) noexcept
std::cref overload to prevent wrapping a reference_wrapper

Detailed Description

template<typename _Tp>

class std::reference_wrapper< _Tp >" Primary class template for reference_wrapper.

Definition at line 2160 of file type_traits.

Friends And Related Function Documentation

template<typename _Tp > constexpr reference_wrapper< const _Tp > cref (const _Tp & __t) [related]

Denotes a const reference should be taken to a variable.

Definition at line 371 of file refwrap.h.

template<typename _Tp > constexpr reference_wrapper< const _Tp > cref (reference_wrapper< _Tp > __t) [related]

std::cref overload to prevent wrapping a reference_wrapper

Definition at line 391 of file refwrap.h.

template<typename _Tp > constexpr reference_wrapper< _Tp > ref (_Tp & __t) [related]

Denotes a reference should be taken to a variable.

Definition at line 364 of file refwrap.h.

template<typename _Tp > constexpr reference_wrapper< _Tp > ref (reference_wrapper< _Tp > __t) [related]

std::ref overload to prevent wrapping a reference_wrapper

Definition at line 384 of file refwrap.h.

Author

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Tue Jul 14 2020 libstdc++