Hi! Sorry for my English, I am from Russia. Is there any interest in a library which parse command line parameters and call correspond functions/functors? Features: - check type of parameter, - check "value semantic" of parameter, - set necessity of parameter, - maybe set default value for parameter, - some other settings. Example: void help() { std::cout << "This is my help info!" << std::endl; ::exit( 0 ); // Exit after printing help info. } struct config_file { void operator()( const std::string& file ) { // Some work with obtaining file path. } }; void limit( const std::string& some_limit_value ) { // int limit = boost::lexical_cast< int >( some_limit_value ); // ... } int main( int argc, char* argv[] ) { typedef command_line_parameter_parser clp_parser; clp_parser parser; parser.add_parameter( "-h", "--help", help ); // Short and full names, in Unix tradition. // In this case we define parameter with one name and value (it is must be valid path); // Without check_value() obtaining path will not be checked. parser.add_parameter( "--config", config_file, clp_parser::with_value ).check_value( clp_parser::path ); parser.add_parameter( "-l", "--limit", limit ).check_type( clp_parser::integer ); // Is integer? parser.set_value_separator( ':' ); // "--config:/home/file.conf" instead default "--config=/home/file.conf" try { parser.parse( argc, argv ); } catch ( const std::exception& exc ) { std::cerr << exc.what() << std::endl; } ... return 0; } Denis