Storing a list of resolutions as an array?

[Flash619]

If all of your video modes were invalid, this loop would only be capable of removing half of them.  An element is skipped for every one removed, with the exception of the last element if it happens to be removed -- undefined behavior is invoked in that case.

Well it was equaling 0 entries after the loop. :/ Oh well, I don't even have that loop anymore. I obsoleted it after discovering how much I loved sf::VideoMode::getFullscreenModes()

[Perde]

Just in case you wonder, this would be a proper way:

std::vector<sf::VideoMode>::iterator it = relist.begin();
while(it != relist.end())
{
    if(!it->isValid())
        it = relist.erase(it);
    else
        ++it;
}

Since erase removes the current element, the iterator points at the next one. That's why you only have to increase it when nothing gets removed, or else you'd skip elements.