Removing elements from a LIST or VECTOR untill empty

[XXL66]

Hello,

i'm having troubles with a piece of code where I have a VECTOR and do some tasks with the elements untill this VECTOR is empty.

while ( !segments.empty() )
{

subsegments.clear(); // clear subsegments
bool first=true;
for(ii=segments.begin(); ii!=segments.end(); ii++)
{
segment=*ii;
if (first == true)
{
first = false;
refelev=segment.elev;
}
if ((fabs (segment.elev-refelev)) < 0.001)
{
subsegments.push_back(segment); /// add element to subsegments
segments.erase( ii );
ii--;
}
}

...

}

It seems to go wrong with the i--

The wierd thing is this works fine in VC2003 but now that i'm using 2005 it doesn't.

[Philip Nicoletti]

When erasing from a sequential container in this manner, the basic
algorithm is to :

a) do no have an increment section in the for statement
b) if doing an erase, use the return value to get to the next iterator
c) else increment the iterator by hand

        for(ii=segments.begin(); ii!=segments.end(); /* nothing here */  ) 
        { 
            segment=*ii;
            if (first == true)
            {
                first = false;
                refelev=segment.elev;
            }
            if ((fabs (segment.elev-refelev)) < 0.001)
            { 
                subsegments.push_back(segment); /// add element to subsegments
                ii =  segments.erase( ii );
            }
            else
            {
                ++ii
            }
        }

[XXL66]

Thank you very much !

I'm gonna try this !