law tcontains_append

minebender-game@1.0.0.0 · proof_solver.bend:2004

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

2004law tcontains_append:
2005  for +xs: List<&2, S.Todo>
2006  for +ys: List<&2, S.Todo>
2007  for +q: T.Pos
2008  {tcontains(List.append(&2, S.Todo, xs, ys), q) == Bool.or(tcontains(xs, q), tcontains(ys, q)) : Bool}