Function parse_command_line

example/print_file/print_file_leaf_result.cpp:154–160

Parse the command line, return the file name.

// Parse the command line, return the file name.
result<char const *> parse_command_line( int argc, char const * argv[] )
{
    if( argc == 2 )
        return argv[1];
    else
        return leaf::new_error(bad_command_line);
}


// Open a file for reading.