Ruby：在Ruby中优雅的数组初始化和返回

I have a method:

我有一个方法:

def deltas_to_board_locations(deltas, x, y)
    board_coords = []
    deltas.each_slice(2) do |slice|
      board_coords << x + slice[0] 
      board_coords << y + slice[1]
    end
    board_coords
  end 
def deltas_to_boar