for循环遍历数组:
arr := []int{1, 2, 3, 4, 5}for i := 0; i < len(arr); i++ { fmt.Println(arr[i])}range关键字遍历数组:arr := []int{1, 2, 3, 4, 5}for _, value := range arr { fmt.Println(value)}使用range关键字遍历数组并同时获取索引和值:arr := []int{1, 2, 3, 4, 5}for index, value := range arr { fmt.Println(index, value)}使用for range循环遍历map:m := map[string]int{"a": 1, "b": 2, "c": 3}for key, value := range m { fmt.Println(key, value)} 



