ProofGrid.toggle_self: law of minebender-game@1.0.0.0
Import: import minebender-game@1.0.0.0/proof_grid.bend as ProofGrid
Lines 305-309 of minebender-game@1.0.0.0/proof_grid.bend: https://jend.leeeet.dev/read.txt?path=minebender-game@1.0.0.0/proof_grid.bend&start_line=305&end_line=309

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/game.bend as G

# Toggling p flips whether p is in the list.
law toggle_self:
  for +flags: List<&2, T.Pos>
  for +p: T.Pos
  {B.contains(G.toggle(flags, p), p) == Bool.not(B.contains(flags, p)) : Bool}

Uses (7):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool.not
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=minebender-game@1.0.0.0/board.bend&name=contains
  https://jend.leeeet.dev/definition.txt?path=minebender-game@1.0.0.0/game.bend&name=toggle
  https://jend.leeeet.dev/definition.txt?path=minebender-game@1.0.0.0/proof_grid.bend&name=toggle_self.go
  https://jend.leeeet.dev/definition.txt?path=minebender-game@1.0.0.0/types.bend&name=Pos