Struct key_value_pair

boost::process::v2::environment::key_value_pair

Synopsis

// In header: <boost/process/v2/environment.hpp>


struct key_value_pair {
  // types
  typedef char_type                      value_type;      
  typedef std::char_traits< char_type >  traits_type;     
  typedef std::basic_string< char_type > string_type;     
  typedef basic_cstring_ref< char_type > string_view_type;

  // public member functions
  key_value_pair();
  key_value_pair(const key_value_pair &) = default;
  key_value_pair(key_value_pair &&);
  key_value_pair(key_view, value_view);
  key_value_pair(key_view, 
                 std::initializer_list< basic_string_view< char_type > >);
  key_value_pair(const string_type &);
  key_value_pair(string_type &&);
  key_value_pair(const value_type *);
  key_value_pair(value_type *);
  explicit key_value_pair(key_value_pair_view);
  template<typename Source> 
    key_value_pair(const Source &, 
                   decltype(std::declval< Source >().data()) = nullptr, 
                   decltype(std::declval< Source >().size()) = 0u);
  template<typename Key, typename Value> 
    key_value_pair(const std::pair< Key, Value > &);
  key_value_pair(const typename conditional< is_same< value_type, char >::value, wchar_t, char >::type *);
  template<typename InputIt, 
           typename std::iterator_traits< InputIt >::iterator_category> 
    key_value_pair(InputIt, InputIt);
  ~key_value_pair() = default;
  key_value_pair & operator=(const key_value_pair &) = default;
  key_value_pair & operator=(key_value_pair &&);
  key_value_pair & operator=(string_type &&);
  template<typename Source> key_value_pair & operator=(const Source &);
  key_value_pair & assign(string_type &&);
  template<typename Source> key_value_pair & assign(const Source &);
  template<typename InputIt> key_value_pair & assign(InputIt, InputIt);
  void clear();
  void swap(key_value_pair &) noexcept;
  const value_type * c_str() const noexcept;
  const string_type & native() const noexcept;
  string_view_type native_view() const noexcept;
  operator string_type() const;
  operator string_view_type() const;
  operator typename string_view_type::string_view_type() const;
  operator key_value_pair_view() const;
  int compare(const key_value_pair &) const noexcept;
  int compare(const string_type &) const;
  int compare(string_view_type) const;
  int compare(const value_type *) const;
  template<typename CharT, typename Traits = std::char_traits<CharT>, 
           typename Alloc = std::allocator<CharT> > 
    std::basic_string< CharT, Traits, Alloc > 
    basic_string(const Alloc & = Alloc()) const;
  std::string string() const;
  std::wstring wstring() const;
  const string_type & native_string() const;
  bool empty() const;
  struct key_view key() const;
  struct value_view value() const;
  const value_type * data() const;
  std::size_t size() const;
  template<std::size_t Idx> virtual auto get() const = 0;
  template<> virtual key_view get() const = 0;
  template<> virtual value_view get() const = 0;
};

Description

`key_value_pair` public member functions

```
key_value_pair();
```

key_value_pair(const key_value_pair & p) = default;

```
key_value_pair(key_value_pair && p);
```

key_value_pair(key_view key, value_view value);

key_value_pair(key_view key, 
               std::initializer_list< basic_string_view< char_type > > values);

key_value_pair(const string_type & source);

```
key_value_pair(string_type && source);
```
```
key_value_pair(const value_type * raw);
```
```
key_value_pair(value_type * raw);
```

explicit key_value_pair(key_value_pair_view kv);

template<typename Source> 
  key_value_pair(const Source & source, 
                 decltype(std::declval< Source >().data()) = nullptr, 
                 decltype(std::declval< Source >().size()) = 0u);

template<typename Key, typename Value> 
  key_value_pair(const std::pair< Key, Value > & kv);

key_value_pair(const typename conditional< is_same< value_type, char >::value, wchar_t, char >::type * raw);

template<typename InputIt, 
         typename std::iterator_traits< InputIt >::iterator_category> 
  key_value_pair(InputIt first, InputIt last);

```
~key_value_pair() = default;
```

key_value_pair & operator=(const key_value_pair & p) = default;

key_value_pair & operator=(key_value_pair && p);

key_value_pair & operator=(string_type && source);

template<typename Source> key_value_pair & operator=(const Source & source);

key_value_pair & assign(string_type && source);

template<typename Source> key_value_pair & assign(const Source & source);

template<typename InputIt> 
  key_value_pair & assign(InputIt first, InputIt last);

```
void clear();
```

void swap(key_value_pair & other) noexcept;

const value_type * c_str() const noexcept;

const string_type & native() const noexcept;

string_view_type native_view() const noexcept;

```
operator string_type() const;
```
```
operator string_view_type() const;
```

operator typename string_view_type::string_view_type() const;

```
operator key_value_pair_view() const;
```

int compare(const key_value_pair & p) const noexcept;

int compare(const string_type & str) const;

int compare(string_view_type str) const;

int compare(const value_type * s) const;

template<typename CharT, typename Traits = std::char_traits<CharT>, 
         typename Alloc = std::allocator<CharT> > 
  std::basic_string< CharT, Traits, Alloc > 
  basic_string(const Alloc & alloc = Alloc()) const;

```
std::string string() const;
```
```
std::wstring wstring() const;
```

const string_type & native_string() const;

```
bool empty() const;
```
```
struct key_view key() const;
```
```
struct value_view value() const;
```
```
const value_type * data() const;
```
```
std::size_t size() const;
```

template<std::size_t Idx> virtual auto get() const = 0;

template<> virtual key_view get() const = 0;

template<> virtual value_view get() const = 0;

Boost C++ Libraries

Struct key_value_pair

Synopsis

Description

key_value_pair public member functions

`key_value_pair` public member functions