std::reference_wrapper< _Tp >(3)                      Library Functions Manual

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


SYNOPSIS
       #include <functional>

   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 __invoke_result< _Tp &, _Args...
           >::type operator() (_Args &&... __args) const
           noexcept(__is_nothrow_invocable< _Tp &, _Args... >::value)
       reference_wrapper & operator= (const reference_wrapper &)=default

   Related Symbols
       (Note that these are not member symbols.)


           template<typename _Tp > constexpr reference_wrapper< _Tp > ref (_Tp
               &__t) noexcept
           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.

Friends And Related Symbol Documentation
   template<typename _Tp > constexpr reference_wrapper< const _Tp > cref
       (const _Tp & __t) [related]
       Denotes a const reference should be taken to a variable.

       References std::forward().

   template<typename _Tp > constexpr reference_wrapper< const _Tp > cref
       (reference_wrapper< _Tp > __t) [related]
       std::cref overload to prevent wrapping a reference_wrapper

   template<typename _Tp > constexpr reference_wrapper< _Tp > ref (_Tp & __t)
       [related]
       Denotes a reference should be taken to a variable.

       References std::forward().

   template<typename _Tp > constexpr reference_wrapper< _Tp > ref
       (reference_wrapper< _Tp > __t) [related]
       std::ref overload to prevent wrapping a reference_wrapper


Author
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                                   libstdc++  std::reference_wrapper< _Tp >(3)