src_corelib_io_qdiriterator.cpp

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QDirIterator it("/etc", QDirIterator::Subdirectories);
while (it.hasNext()) {
    QString dir = it.next();
    qDebug() << dir;
    // /etc/.
    // /etc/..
    // /etc/X11
    // /etc/X11/fs
    // ...
}
 
QDirIterator it("/sys", QStringList() << "scaling_cur_freq", QDir::NoFilter, QDirIterator::Subdirectories);
while (it.hasNext()) {
    QFile f(it.next());
    f.open(QIODevice::ReadOnly);
    qDebug() << f.fileName() << f.readAll().trimmed().toDouble() / 1000 << "MHz";
}
 
QDirIterator audioFileIt(audioPath, {"*.mp3", "*.wav"}, QDir::Files);