title: QCache and QSharedPointer
body: <p>The problem is, that I have a <code>QVector</code> of <code>QSharedPointer</code> and I want to put part of them to my <code>QCache</code>. How can I insert a shared pointer to <code>QCache</code>? What happens if I set the pointer to my cache but destroy the <code>QVector</code> and the shared pointer in it? Will the memory be released and my cache points to nowhere? </p>