How to determine an interface{} value's “real” type?

Question

I have not found a good resource for using interface{} types. For example

package main

import \"fmt\"

func weirdFunc(i int) interface{} {
             


        

Answer 1

Type switches can also be used with reflection stuff:

var str = "hello!"
var obj = reflect.ValueOf(&str)

switch obj.Elem().Interface().(type) {
case string:
    log.Println("obj contains a pointer to a string")
default:
    log.Println("obj contains something else")
}