golang []interface{} 的数组如何转换为 []string 的数组

Question

packagemainimport("fmt""strings")funcgetName(params...interface{}){aa:=strings.Join([]string(params),'_')fmt.Println(aa)}funcmain(){getName("redis","100","master")}看上面的代码，我想把传入的参数params用"_"连接，但是将params转成[]string类型时失败了，请指教。假如假如getName("redis","100","master")改为getName("redis",100,"master")编译没错误，但是运行时报错panic:interfaceconversion:interfaceisint,notstring

Answer 1

packagemain
import(
"fmt"
"strconv"
"strings"
)
funcgetName(params...interface{}){
varparamSlice[]string
for_,param:=rangeparams{
switchv:=param.(type){
casestring:
paramSlice=append(paramSlice,v)
caseint:
strV:=strconv.FormatInt(int64(v),10)
paramSlice=append(paramSlice,strV)
default:
panic("paramstypenotsupported")
}
}
res:=strings.Join(paramSlice,"_")
fmt.Println(res)
}
funcmain(){
getName("redis",100,"master")
}