def split_cat
import unified-nsga-iii@0.2.2.0/non_dominated_sort.bend as NonDominatedSortimport Base
204def split_cat(a: Split, b: Split) -> Split:
205 match a b:
206 case Split{ff1, ot1} Split{ff2, ot2}:
207 Split{List.append(&2, Nat, ff1, ff2), List.append(&2, Row, ot1, ot2)}