law fill_row_get

minebender-game@1.0.0.0 · proof_solver.bend:438

import Base
import minebender-game@1.0.0.0/solver.bend as S

438law fill_row_get:
439  for +r: List<&2, Maybe<&2, Bool>>
440  for +x: Nat
441  {Maybe.default(&2, Bool, List.get(&2, Bool, S.fill.row(r), x), False{})
442    == Maybe.default(&2, Bool, Maybe.default(&2, Maybe<&2, Bool>, List.get(&2, Maybe<&2, Bool>, r, x), None{}), False{}) : Bool}