Hands-On Software Engineering with Golang

The Message interface

It logically follows that the contents of messages that are exchanged between vertices heavily depend on the application or graph algorithm that we are trying to execute. Consequently, to avoid passing plain interface{} values around, we need to come up with a plausible interface for describing messages in a generic way. The Message interface, which lives in the Chapter08/bspgraph/message package, is an attempt at doing exactly that:

type Message interface {
    // Type returns the type of this Message.
    Type() string
}

At this point, you are probably dubious about the usefulness of having a Type method on this interface. Can this really be any better than simply using an interface{}?

If you recall our discussion of the ...