broadcast               broadcasts a shorter vector-like object into a
                        vector of equal length as a longer vector-like
                        object
check_length            This function checks that the vector-like
                        objects x, y are of equal length.
fill                    Use a given fillvalue to fill in a shorter
                        sequence and returns a sequence of equal length
                        to the longer sequence. Takes a subset of the
                        fill sequence if fill sequence is longer than
                        the difference between the longer and shorter
                        sequences
zipr                    zip two vector-like objects into a dataframe
