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## Struct template const_entry_type

boost::process::basic_environment::const_entry_type

## Synopsis

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

    template<typename Char, typename Environment>
    struct const_entry_type {
      // types
      typedef Char                             value_type;
      typedef const value_type *               pointer;
      typedef std::basic_string< value_type >  string_type;
      typedef boost::iterator_range< pointer > range;
      typedef Environment                      environment_t;

      // construct/copy/destruct
      const_entry & operator=(const const_entry &) = default;

      // public member functions
      std::vector< string_type > to_vector() const;
       const_entry(const const_entry &) = default;
      bool empty() const;
    };

## Description

Proxy class used for read access to members by [] or .at()

| Note
Holds a reference to the environment it was created from.

### `const_entry_type` public construct/copy/destruct

1.     const_entry & operator=(const const_entry &) = default;

   Move Constructor.

### `const_entry_type` public member functions

1.     std::vector< string_type > to_vector() const;

   Split the entry by ";" or ":" and return it as a vector. Used by PATH.

   Get the value as string. Get the name of this entry.

2.      const_entry(const const_entry &) = default;

   Copy Constructor.

3.     bool empty() const;

   Check if the entry is empty.