Cannot type switch on non-interface value

Question

I am playing with type assertion using the following dummy code, and I got the error:

cannot type switch on non-interface value

Doe

Answer 1

There are two kinds of type conversions

1. conversion between basic data types. For this we can use the direct casting

   i := 48

   str := string(i)

2. But type conversion using value.(type) is for conversion among the class hierarchy, (e.g. where we want to get the specific implementation from the interface). Else, we get the above error.