“不能将myType用作类型接口{}”吗？ 我以为Go中所有类型都算作interface {}？ [重复]

Question

This question already has an answer here:

• Convert []string to []interface{} 1 answer
• Converting slice of structs to slice of empty interface 1 answer
• Why can't I substitute a slice of one type for another in Go? 3 answers
• Why can't I pass a `func() []int` as `func() []interface{}` in go? 2 answers
• Why a slice []struct doesn't behave same as []builtin? 3 answers

I'm trying to write a function that can take any type (more specifically, trying to get it to take any type of protobuffer, but I'll settle for being more broadly generic if I have to). Based on what I've read, it seems like it can be done like this:

func processSlice(mySlice []interface{}) void{
  // Do stuff in here
}

When I try to use this with a slice of protos, though, I get the following error:

cannot use myProtoSlice (type []*MyProto) as type []interface{} in argument to processSlice

</div>

Answer 1

As the error clearly depicts:

cannot use myProtoSlice (type []*MyProto) as type []interface{} in argument to processSlice

[]interface{} of interface is not interface{} type it is different. Golang is strict about types.

Change the slice of interface to just interface to wrap the value you are receiving in your function. Modify below code:

func processSlice(mySlice []interface{}) void{
  // Do stuff in here
}

To passing an interface

func processSlice(mySlice interface{}) void{
  // Do stuff in here
}