类型接口{}不支持golang中的索引编制

问题描述

我有这样的地图:

Map := make(map[string]interface{})

该映射应该包含从字符串到对象数组的映射.数组可以是不同的类型，例如[]Users或[]Hosts.我填充了这个数组:

This map is supposed to contain mapping from string to array of objects. Arrays can be of different types, like []Users or []Hosts. I populated this array:

TopologyMap["Users"] = Users_Array
TopologyMap["Hosts"] = Hosts_Array

但是当我尝试从中获取元素时:

but when I try to get an elements from it:

Map["Users"][0]

它给出一个错误:(type interface {} does not support indexing)

我该如何克服?

推荐答案

您必须将接口{}显式转换为所需类型的切片才能实现.像这样 https://play.golang.org/p/yZmniZwFar

You have to explicitly convert your interface{} to a slice of the expected type to achieve it. Something like thishttps://play.golang.org/p/yZmniZwFar

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