memento

README

备忘录模式

备忘录模式用于保存程序内部状态到外部，又不希望暴露内部状态的情形。

程序内部状态使用窄接口传递给外部进行存储，从而不暴露程序实现细节。

备忘录模式同时可以离线保存内部状态，如保存到数据库，文件等。

Documentation

Index

• type Game
  • func (g *Game) Load(m Memento)
  • func (g *Game) Play(mpDelta, hpDelta int)
  • func (g *Game) Save() Memento
  • func (g *Game) Status()
• type Memento

Examples

• Game

Types

type Game

type Game struct {
	// contains filtered or unexported fields
}

Example

game := &Game{
	hp: 10,
	mp: 10,
}

game.Status()
progress := game.Save()

game.Play(-2, -3)
game.Status()

game.Load(progress)
game.Status()

Output:

Current HP:10, MP:10
Current HP:7, MP:8
Current HP:10, MP:10

func (*Game) Load

func (g *Game) Load(m Memento)

func (*Game) Play

func (g *Game) Play(mpDelta, hpDelta int)

func (*Game) Save

func (g *Game) Save() Memento

func (*Game) Status

func (g *Game) Status()

type Memento

type Memento interface{}