def cm.blocks.append
import bend-osdev-cipher-modes@0.1.0.0/cipher_modes.bend as CipherModesimport Base
206# xs, then ys (List.append)
207def cm.blocks.append(xs: List<&2, CmBlock>, ys: List<&2, CmBlock>) -> List<&2, CmBlock>:
208 cm.blocks.rev_onto(cm.blocks.rev_onto(xs, Nil{}), ys)