10장 ISP:인터페이스 분리 원칙

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재영

ISP

• 필요 이상을 많은 걸 포함하는 모듈에 의존하면 해롭다.

# Bad
class Vehicle:
  def start():
      pass
  def stop():
      pass
  def fly():
      pass


class Car(Vehicle):
  def start():
      sth_1()
  def stop():
      sth_2():
  def fly():
      # no implementation


class Plane(Vehicle):
  def start():
      # no implementation
  def stop():
      # no implementation
  def fly():
      sth()


# Better
class Vehicle:
  pass


class Movable:
  def start():
      pass
  def stop():
      pass


class Flyable:
  def fly():
      pass


class Car(Movable, Vehicle):
  def start():
      sth_1()
  def stop():
      sth_2()


class Plane(Flyable, Vehicle):
  def fly():
      sth()