std::reference_wrapper::reference_wrapper
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                    < cpp | utility | functional | reference wrapper
                    
                                                            
                    | reference_wrapper( T& x ); | (since C++11) | |
| reference_wrapper( T&& x ) = delete; | (since C++11) | |
| reference_wrapper( const reference_wrapper<T>& other ); | (since C++11) | |
Constructs a new reference wrapper.
1) Stores a reference to x.
2) Construction from a temporary object is not allowed.
3) Copy constructor. Stores a reference to other.get().
[edit] Parameters
| x | - | an object to wrap | 
| other | - | another reference wrapper | 
[edit] Exceptions
noexcept specification:  
noexcept
  

