Boost C++ Libraries Home Libraries People FAQ More

PrevUpHomeNext

Class template basic_option

boost::program_options::basic_option

Synopsis

// In header: <boost/program_options/option.hpp>

template<typename charT> 
class basic_option {
public:
  // construct/copy/destruct
  ();
  (, );

  // public data members
   ;
   ;
   ;
   ;
   ;
   ;
};

Description

Option found in input source. Contains a key and a value. The key, in turn, can be a string (name of an option), or an integer (position in input source) -- in case no name is specified. The latter is only possible for command line. The template parameter specifies the type of char used for storing the option's value.

basic_option public construct/copy/destruct

  1. ();
  2. ( xstring_key, 
                  xvalue);

basic_option public public data members

  1.  ;

    String key of this option. Intentionally independent of the template parameter.

  2.  ;

    Position key of this option. All options without an explicit name are sequentially numbered starting from 0. If an option has explicit name, 'position_key' is equal to -1. It is possible that both position_key and string_key is specified, in case name is implicitly added.

  3.  ;

    Option's value

  4.  ;

    The original unchanged tokens this option was created from.

  5.  ;

    True if option was not recognized. In that case, 'string_key' and 'value' are results of purely syntactic parsing of source. The original tokens can be recovered from the "original_tokens" member.

  6.  ;

    True if string_key has to be handled case insensitive.


PrevUpHomeNext