How to pass any datatype variable to the function

[akhilravuri (akhil)]

I was trying to create a function that can take any type of datatype.
Here I will pass the variable which has contents but not the content directly.

func Anytype(buffer interface{}) error {
	switch d := buffer.(type) {
	case string:
		fmt.Println("String")
	case []byte:
              fmt.Println("byte array")
	}
	return nil
}
func main(){
a:="string"
b:=[]byte{1,23,4}
Anytype(a)
Anytype(b)
}

But when I run this I am getting this error.How to solve this.

cannot convert str (type interface {}) to type string: need type assertion

Thanks

[geosoft1 (George Calianu)]

Tested in playground your program have no errors

https://play.golang.org/p/kYqMF8VaMfF

[akhilravuri (akhil)]

Now Its working fine:upside_down_face:

Thanks

[NobbZ (Norbert Melzer)]

That message does not match your code. You do not have a variable str.

[akhilravuri (akhil)]

I generalized the code so that it will be easy to understand.
But copied the error from the main code. Sorry

Thanks