law true_set_f

minebender-game@1.0.0.0 · proof_speed.bend:203

import Base
import minebender-game@1.0.0.0/types.bend as T
import minebender-game@1.0.0.0/board.bend as B
import minebender-game@1.0.0.0/solver.bend as S

203# ... and none otherwise.
204law true_set_f:
205  for +w: Nat
206  for +h: Nat
207  for +part: T.Grid(Maybe<&2, Bool>)
208  for +x: Nat
209  for +y: Nat
210  for +sh: {B.shaped(Maybe<&2, Bool>, w, h, part) == True{} : Bool}
211  for +on: {B.on_board(w, h, T.Pos{x, y}) == True{} : Bool}
212  for +fr: {S.look(part, T.Pos{x, y}) == None{} : Maybe<&2, Bool>}
213  {S.part_true(B.set_at(Maybe<&2, Bool>, part, T.Pos{x, y}, Some{False{}})) == S.part_true(part) : Nat}