def true_among

minebender-game@1.0.0.0 · solver.bend:172

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

172def true_among(+part: T.Grid(Maybe<&2, Bool>), ps: List<&2, T.Pos>) -> Nat:
173  match ps:
174    case Nil{}:
175      0n
176    case q <> t:
177      Nat.add(one_if(is_true(look(part, q))), true_among(part, t))