LAWS.fin_of.next: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/shape/LAWS.bend as LAWS
Lines 40-45 of bendtorch-core@0.1.0.0/src/shape/LAWS.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/shape/LAWS.bend&start_line=40&end_line=45

import Base
import bendtorch-core@0.1.0.0/src/shape/core.bend as Shape

def fin_of.next(-bound: Nat, index: Maybe<&2, Shape.Fin(bound)>) -> Maybe<&2, Shape.Fin(1n+bound)>:
  match index:
    case None{}:
      None{}
    case Some{previous}:
      Some{Shape.FNext{previous}}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=Fin
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=Fin.Step