What kind of idiot would carry a package for someone when they've absolutely no idea what's inside it? Well, generic types in Go are exactly like that, only in a good way.
All tagged types
Map types in Golang
What map types exist in Go? What data types can we use as map keys? What about map values? Are different kinds of maps considered distinct types? And what’s the difference between nil and empty maps? Find out in this handy, bite-size tutorial on map types in Golang.