def fold_of
import mlbend-select@0.1.0.0/main.bend as MlbendSelectimport Base
import mlbend-split@0.1.1.0/main.bend as Split
35# The rows of the fold f: the ones that test and the ones that train.
36def fold_of(+fs: List<&2, Nat>, +f: Nat) -> Fold:
37 Fold{Split.test_of(fs, f), Split.train_of(fs, f)}