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Full Discussion: passing object to function, columns class
Top Forums Programming passing object to function, columns class Post 302513687 by LMHmedchem on Wednesday 13th of April 2011 10:02:43 PM
Old 04-13-2011
Quote:
Originally Posted by Corona688
This is some very bizarre kind of indirect pointer offset I've never heard of before, then.

I would've had an array of strings and passed in an integer or enum to say which index to set. That way you'd even be able to check if you were given an invalid index -- values <0 or >n would be invalid and that's that.
I figured if I make these member functions, I would just have a "set_header" function, etc. I think if I make them member functions, I need to specify an object the the call. That would mean I would have to make a separate call for each column, which would be ok I guess.

I need to work a bit on the code to convert from string. I think it makes the most sense to do that in the loading function, since the discrete strings are in scope there,
Code:
// accepts a stringstream and parses the data in to columns
int data_row_toCol( stringstream &colsRowStream, 
                    std::vector<column_data>& columns ){
   int i = 0;
   std::string rowCell;
   // parse header row into cells, tab delimiter
   while(getline(colsRowStream,rowCell,'\t')) {
      columns[i].inDtaStr.push_back(rowCell);
      i++;
   }
   // clear the buffer
   colsRowStream.clear();
}

Each "rowCell" is what needs to be converted, so I could add a call to something like the code you posted earlier,
Code:
// accepts a stringstream and parses the data in to columns
int data_row_toCol( stringstream &colsRowStream, 
                    std::vector<column_data>& columns ){
   int i = 0;
   std::string rowCell;
   // parse header row into cells, tab delimiter
   while(getline(colsRowStream,rowCell,'\t')) {
      convert_string(rowCell);
      columns[i].inDtaStr.push_back(rowCell);
      i++;
   }
   // clear the buffer
   colsRowStream.clear();
}

or something like that.

I need to take a break from this to finish my taxes, fun, fun, fun. Smilie

LMHmedchem
 

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LEARN ABOUT NETBSD

lastlogx

UTMPX(5)						      BSD File Formats Manual							  UTMPX(5)

NAME

     utmpx, wtmpx, lastlogx -- user accounting database

SYNOPSIS

     #include <utmpx.h>

DESCRIPTION

     In contrast to utmp and wtmp, the extended databases in utmpx and wtmpx reserve more space for logging hostnames, and also information on a
     process' ID, termination signal and exit status.

     The <utmpx.h> header defines the structures and functions for logging user.  Currently logged in users are tracked in /var/run/utmpx, a list
     of all logins and logouts, as well as all shutdowns, reboots and date changes, is kept in /var/log/wtmpx, and the last login of each user is
     noted in /var/log/lastlogx.

     The interface to the utmpx file is described in getutxent(3).

     The wtmpx file can grow rapidly on busy systems, and is normally rotated with newsyslog(8).

     In the event of a date change, a shutdown, or a reboot, the following items are logged in the wtmpx file:
	   date        The system time has been manually or automatically updated by date(1).  The command name date is recorded in the field
		       ut_name.  In the field ut_line, the character '|' indicates the time prior to the change, and the character '{' indicates
		       the new time.
	   reboot
	   shutdown    A system reboot or shutdown has been initiated.	The character '~' is placed in the field ut_line, and reboot or shutdown
		       in the field ut_name (see shutdown(8) and reboot(8)), using logwtmpx(3).

FILES

     /var/run/utmpx	The utmpx file.
     /var/log/wtmpx	The wtmpx file.
     /var/log/lastlogx	The lastlogx file.

SEE ALSO

     last(1), login(1), rwho(1), w(1), who(1), endutxent(3), logwtmpx(3), utmp(5), ac(8), init(8), newsyslog(8), reboot(8)

BSD
								 January 31, 2007							       BSD
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