Re: g_list behavior: what am I doing wrong?

[Allin Cottrell <cottrell wfu edu>]

On Thu, 14 Jul 2005, Christopher Anderson wrote:

> I am curious, could you explain your solution?

OK, at the cost of some embarrassment ;-)

Quoting my test function:

int main (void)
{
     GList *list = NULL;

     list = g_list_append(list, "foo");
     list = g_list_append(list, "bar");
     list = g_list_append(list, "baz");

     puts("\nBefore prepending:");

     while (list) {
        printf("list data = '%s'\n", (char *) list->data);
        list = g_list_next(list);
     }

Bzzzt!!  On the first iteration of the above printing loop I lose 
the true start of "list".  I should have used a temporary variable 
for looping over the list elements, as in

     GList *tmp = list;

     while (tmp) {
        printf("list data = '%s'\n", (char *) tmp->data);
        tmp = g_list_next(tmp);
     }

Or I suppose I could have used g_list_foreach() with a callback 
function, though I find that a bit awkward.

Allin Cottrell