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## Class template indeterminate_name

boost::logic::indeterminate_name — A locale facet specifying the name of the indeterminate value of a tribool.

## Synopsis

    // In header: <boost/logic/tribool_io.hpp>

    template<typename CharT>
    class indeterminate_name {
    public:
      // types
      typedef CharT                      char_type;
      typedef std::basic_string< CharT > string_type;

      // construct/copy/destruct
      indeterminate_name();
      explicit indeterminate_name(const string_type &);

      // public member functions
      string_type name() const;

      // public data members
      static std::locale::id id;  // Uniquily identifies this facet with the locale.
    };

## Description

The facet is used to perform I/O on tribool values when `std::boolalpha` has been specified. This class template is only available if the C++ standard library implementation supports locales.

### `indeterminate_name` public construct/copy/destruct

1.     indeterminate_name();

   Construct the facet with the default name.

2.     explicit indeterminate_name(const string_type & initial_name);

   Construct the facet with the given name for the indeterminate value.

### `indeterminate_name` public member functions

1.     string_type name() const;

   Returns the name for the indeterminate value.