package main
import "fmt"
func main(){
    var pc map[string] string
    pc = make(map[string] string)
    pc["qingdao"] = "青島"
    pc["jinan"] = "濟南"
    pc["yantai"] = "煙臺"
    delete(pc,"qingdao")
    qingdao,ok := pc["qingdao"]
    if ok{
        fmt.Println(qingdao)   
    }else{
        fmt.Println("元素不存在")
    }
}
 

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