8. map

基本使用

• make(map[keyType]valueType)

package main
import "fmt"
func main()  {
    // map[keyType]valueType
    var m  map[string]string
    m= make(map[string]string,5)
    m["name"]="luckyFang"
    m["address"]="ShanXi"
    fmt.Printf("%v\n",m)
    person :=map[string]string{
        "name":"jack",
    }
    fmt.Printf("%v\n",person)
}

操作map

• delete 删除元素
• map 是引用传递的

package main
import "fmt"
func change(m map[string]int)  {
    m["ZhangSan"]=59
}
func main() {
    scoreMap:=make(map[string]int)
    // 添加元素
    scoreMap["LiHua"]=90
    scoreMap["XiaoMing"]=92
    scoreMap["LiLi"]=85
    fmt.Printf("%v\n",scoreMap)
    // 修改元素
    scoreMap["LiHua"]=60
    fmt.Printf("%v\n",scoreMap)
    // 删除元素
    delete(scoreMap,"LiLi")
    // map是引用传递
    change(scoreMap)
    // 遍历Map
    for name,score :=range scoreMap{
        fmt.Printf("name=%v,score=%d\n",name,score)
    }
}

map[LiHua:90 LiLi:85 XiaoMing:92]
map[LiHua:60 LiLi:85 XiaoMing:92]
name=LiHua,score=60
name=XiaoMing,score=92
name=ZhangSan,score=59