tic-tac-to challenge

tic_tac_to.rb

def winner?(board)
  @match = false

  def check(type)
    @match = true if type.uniq.length == 1 && !type.include?(" ")
  end

  board.each do |row|
    check(row)
  end

  board.transpose.each do |col|
    check(col)
  end

  diag1, diag2 = board.map.with_index { |row, i| [row[i], row[- i - 1]] }.transpose

  check(diag1)
  check(diag2)

  @match
end

I wasn't able to get your line 8 suggestion implemented. It just won't work no matter how I play with it in the editor. Thanks for the other tips though. I simplified the code just a bit more, although launchcop is still giving is 8/7 for complexity (down from 11/7).