def _unmask_crc(masked_crc):
  rot = (masked_crc - _CRC_MASK_DELTA) & 0xFFFFFFFFL
  return ((rot >> 17) | (rot << 15)) & 0xFFFFFFFFL
The signal handler for the index changed signal.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/api/files/records.py/_unmask_crc--crossover with--dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/qt/qt_object_combo.py/QtObjectCombo.on_index_changed