In the case of limited options, like the following example, which is
better?

class String

  def align(direction. spacing)
    case direction
    when :left
      ...
    when :right
      ...
    when :center
      ...
    end
  end

OR

  def align_left(spacing)
    ...
  end

  def align_right(spacing)
    ...
  end

  def align_center(spacing)
    ...
  end

Thanks,
T.