在需要一片空接口的地方使用字符串片

Question

I'm trying to use a set library I found on the web with a slice of strings. The set is meant to be able to take generic types however when I try to pass in a slice of strings I get:

cannot use group_users (type []string) as type []interface{} in argument to mapset.NewSetFromSlice

Is there a way to use the function without creating a new slice with the elements being type interface{} ?

The set library can be found here:

I know this is probably something simple that I'm doing wrong but I can't seem find the answer

Answer 1

Is there a way to use the function without creating a new slice with the elements being type interface{}?

Not really: You probably need to convert your slice of string into a slice of interface, as explained in "InterfaceSlice" (which is about why you can't go from []Type directly to []interface{}):

var dataSlice []string = foo()
var interfaceSlice []interface{} = make([]interface{}, len(dataSlice))
for i, d := range dataSlice {
    interfaceSlice[i] = d
}

Considering how an interface{} is structured, you cannot quickly convert one slice to the other.

This is a FAQ.