dongxianchu3541 2017-09-17 15:30
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这是Go中组合的有效实现吗?

Is this valid composition? Or there are other solutions?

package main

import (
    "fmt"
    "strings"
)

type Person struct{ name string }

type Swimmer struct{}

func (s *Swimmer) Swim(name string) {
    fmt.Println(strings.Join([]string{
        name,
        " is swimming",
    }, ""))
}

type IronMan struct {
    person  Person
    swimmer Swimmer
}

func (i *IronMan) Swim() {
    i.swimmer.Swim(i.person.name)
}

func main() {
    ironMan := IronMan{
        person:  Person{"Mariottide"},
        swimmer: Swimmer{},
    }

    ironMan.Swim()
}
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1条回答 默认 最新

  • drjtua5953 2017-09-17 16:52
    关注

    Go has struct embedding:

    package main
    
    import (
        "fmt"
    )
    
    type Person struct{ name string }
    
    func (p *Person) Talk(message string) {
        fmt.Printf("%s says: %s
    ", p.name, message)
    }
    
    type Swimmer struct {
        Person
    }
    
    func (s *Swimmer) Swim() {
        fmt.Printf("%s is swimming
    ", s.name)
    }
    
    type IronMan struct {
        Swimmer
    }
    
    func main() {
        ironMan := IronMan{Swimmer{Person{"Mariottide"}}}
    
        ironMan.Swim()
        ironMan.Talk("Hey")
    }
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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