'clearq(addr, ndx = 0) -> int
Clears qword at ``((uint64_t*)addr)[ndx]`` from the cache and
returns the removed value or `None` if the address was not completely set.
Examples:
>>> c = MemLeak(lambda addr: \'\')
>>> c.cache = {x:\'x\' for x in range(0x100, 0x108)}
>>> c.clearq(0x100) == unpack(\'xxxxxxxx\', 64)
True
>>> c.cache == {}
True'

def clearq(self, addr, ndx=0):

    return self._clear(addr, ndx, 8)
