In python:

These exists a function Cursor::next() which accepts an optional argument wait, which may be a bool, None, or a number type.

cursor.next(wait=True) (default):
Wait indefinitely for the next row of the cursor.

cursor.next(wait=False), cursor.next(wait=None), cursor.next(wait=0):
No wait will be performed. If data is immediately available, it will be returned normally, or if data is not immediately available, RqlDriverError("Timed out waiting for cursor response.") will be raised.

If wait is any number greater than 0, the same behavior will occur except that we will wait up to wait seconds for data to become available before raising the RqlDriverError.

If the cursor is empty or completely exhausted and next is called, a StopIteration error will be raised.

In ruby:

There exists a function Cursor::next() which accepts an optional argument, which may be true, false, nil, or a number type.

cursor.next(true) (default):
Wait indefinitely for the next row of the cursor.

cursor.next(false), cursor.next(nil), cursor.next(0):
No wait will be performed. If data is immediately available, it will be returned normally, or if data is not immediately available, Timeout::Error("Timed out waiting for cursor response.") will be raised.

If the argument is any number greater than 0, the same behavior will occur except that we will wait up to that many seconds for data to become available before raising the Timeout::Error.

If the cursor is empty or completely exhausted and next is called, a StopIteration error will be raised.