MlbendSelect.fold_size: def of mlbend-select@0.1.0.0
Import: import mlbend-select@0.1.0.0/main.bend as MlbendSelect
Lines 39-41 of mlbend-select@0.1.0.0/main.bend: https://jend.leeeet.dev/read.txt?path=mlbend-select@0.1.0.0/main.bend&start_line=39&end_line=41

import Base
import mlbend-split@0.1.1.0/main.bend as Split

# The number of rows of the fold f.
def fold_size(fs: List<&2, Nat>, f: Nat) -> Nat:
  List.length(&2, Nat, Split.test_of(fs, f))

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List.length
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=mlbend-split@0.1.1.0/main.bend&name=test_of