//! [0]
QFuture<QString> future = ...;

QFuture<QString>::const_iterator i;
for (i = future.constBegin(); i != future.constEnd(); ++i)
    cout << *i << endl;
//! [0]


//! [1]
QFuture<QString> future;
...
QFutureIterator<QString> i(future);
while (i.hasNext())
    qDebug() << i.next();
//! [1]


//! [2]
QFutureIterator<QString> i(future);
i.toBack();
while (i.hasPrevious())
    qDebug() << i.previous();
//! [2]