Boost C++ Libraries

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Class template compressed_pair

boost::compressed_pair

Synopsis

// In header: <boost/detail/compressed_pair.hpp>

template<typename T1, typename T2> 
class compressed_pair {
public:
  // types
  typedef T1                                          first_type;            
  typedef T2                                          second_type;           
  typedef call_traits< first_type >::param_type       first_param_type;      
  typedef call_traits< second_type >::param_type      second_param_type;     
  typedef call_traits< first_type >::reference        first_reference;       
  typedef call_traits< second_type >::reference       second_reference;      
  typedef call_traits< first_type >::const_reference  first_const_reference; 
  typedef call_traits< second_type >::const_reference second_const_reference;

  // construct/copy/destruct
  compressed_pair();
  compressed_pair(first_param_type, second_param_type);
  explicit compressed_pair(first_param_type);
  explicit compressed_pair(second_param_type);

  // public member functions
  first_reference first();
  first_const_reference first() const;
  second_reference second();
  second_const_reference second() const;
  void swap(compressed_pair &);
};

Description

`compressed_pair` public construct/copy/destruct

```
compressed_pair();
```

compressed_pair(first_param_type x, second_param_type y);

explicit compressed_pair(first_param_type x);

explicit compressed_pair(second_param_type y);

`compressed_pair` public member functions

```
first_reference first();
```
```
first_const_reference first() const;
```
```
second_reference second();
```
```
second_const_reference second() const;
```
```
void swap(compressed_pair & y);
```

Specializations

Class template compressed_pair<T, T>