Iterating a C++ std::list

Set up a list to store pointers to a “Points” class… list<Point*> m_pointList; Add to the list… Point* p = new Point(x, y);m_pointList.push_back(p); Then iterate the list using this… std::list<Point*>::iterator it = m_pointList.begin(); while (it != m_pointList.end()) { Point* p = *it; // do something with the Point here! it++; } …or, if you’d prefer…

ancientcoder

10 Sep 2021

Set up a list to store pointers to a “Points” class…

list<Point*> m_pointList;

Add to the list…

Point* p = new Point(x, y); m_pointList.push_back(p);

Then iterate the list using this…

std::list<Point*>::iterator it = m_pointList.begin();
while (it != m_pointList.end())
{
    Point* p = *it;

    // do something with the Point here!

    it++;
}

…or, if you’d prefer a for loop…

for(std::list<Point*>::iterator it = m_pointList.begin(); it != m_pointList.end(); ++it)
{
    Point* p = *it;
    // do something with the Point here!
}

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