the first operand
the first operand
the second operand
the second operand
(Changed in version 2.9.0) The behavior of scanRight has changed. The previous behavior can be reproduced with scanRight.reverse.
(Changed in version 2.9.0) transpose throws an IllegalArgumentException if collections are not uniformly sized.
Computes the union of the two input operators. The two inputs must have identical headers. This operation does not remove duplicates.
The output header of this operation is identical to the input headers.
the first operand
the second operand