Empty interface{} in function type

Question

An object of any type can be assigned to an empty interface. For example, we have the following function

func Println(i interface{} ) {
  fmt.Println(i)
}
         


        

Answer 1

I do realise its an old discussion, but came across the post and wanted to play around with the concept of having arbitrary function func (interface{}) within another function, instead of interface{}. I could write a simple implementation, by providing an inline implementation of a function which would accept interface{}. And we can call this function from within another function

varForGenFunc := func(in interface{}) int {                             
                    fmt.Println("type of this object: ",reflect.TypeOf(in))
                    return 1}

TakeGenericFunc(varForGenFunc, variableForGen)

Going by this, we can write any implementations of func(interface{}) and pass it as parameter to TakeGenericFunc

You can play around with it here:

https://play.golang.org/p/f5UUhyhEx7u