# strict-iterators Warns when `iterator` objects are implicitly cast to `const_iterator`. This is mostly equivalent to passing -DQT_STRICT_ITERATORS to the compiler. This prevents detachments but also caches subtle bugs such as: QHash<int, int> wrong; if (wrong.find(1) == wrong.cend()) { qDebug() << "Not found"; } else { qDebug() << "Found"; // find() detached the container before cend() was called, so it prints "Found" } QHash<int, int> right; if (right.constFind(1) == right.cend()) { qDebug() << "Not found"; // This is correct now ! } else { qDebug() << "Found"; }
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