问题

我有这个函数：

func functionX(collection []*interface{}) {
    ...
    response, err := json.MarshalIndent(collection, "", "  ")
    ...
}

我希望collection参数允许任何类型的数组，所以我尝试使用*interface{}，但是我收到了这样的错误：

cannot use MyDataType (type []*model.MyDataType) as type []*interface {} in argument to middleware.functionX

英文:

I have this function:

func functionX(collection []*interface{}) {
    ...
    response, err := json.MarshalIndent(collection, &quot;&quot;, &quot;  &quot;)
    ...
}

I want the collection parameter to allow arrays of any kind, that's why I tried with *interface{} but I'm receiving errors like this:

cannot use MyDataType (type []*model.MyDataType) as type []*interface {} in argument to middleware.functionX

答案1

得分: 5

你不能用那种方式做，但是你可以很容易地这样做：

func functionX(collection interface{}) error {
    ...
    response, err := json.MarshalIndent(collection, "", "  ")
    ...
}

英文:

You can't do it that way, however you can easily do this:

func functionX(collection interface{}) error {
    ...
    response, err := json.MarshalIndent(collection, &quot;&quot;, &quot;  &quot;)
    ...
}

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