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我想写一个函数,可以将slice([] int,[] string,[] bool,[] int64,[] float64)转换为字符串。golang - 如何从界面{}类型的切片中获取元素?
[]string{a,b,c} -> a,b,c
[]int{1,2,3} -> 1,2,3
还有就是我code:
func sliceToString(itr interface{}) string {
switch itr.(type) {
case []string:
return strings.Join(itr.([]string), ",")
case []int:
s := []string{}
for _, v := range itr.([]int) {
s = append(s, fmt.Sprintf("%v", v))
}
return strings.Join(s, ",")
case []int64:
s := []string{}
for _, v := range itr.([]int64) {
s = append(s, fmt.Sprintf("%v", v))
}
return strings.Join(s, ",")
case []float64:
s := []string{}
for _, v := range itr.([]float64) {
s = append(s, fmt.Sprintf("%v", v))
}
return strings.Join(s, ",")
case []bool:
s := []string{}
for _, v := range itr.([]bool) {
s = append(s, fmt.Sprintf("%v", v))
}
return strings.Join(s, ",")
}
return ""
}
但它是一个有点复杂,如果我可以转换接口{}(类型片)为[]接口{}或获取元素,它变得更简单。
func sliceToString(itr interface{}) string {
s := []string{}
// convert interface{} to []interface{} or get elements
// els := ...
for _,v:= range els{
s = append(s, fmt.Sprintf("%v", v))
}
return s
}