How to get a reflect structure?

Question

go

Now I have to check that the incoming interface{} contains a struct Error type, get it and do something with it. Here I threw something like what I want to do, but naturally it does not work) https://play.golang.org/p/LdLJguTXB8
How to do it?

Answer 1

Sorry. Solution: https://play.golang.org/p/7gTFtYLjZw suddenly come in handy.