Hands-On Dependency Injection in Go

Simplified dependency creation

When we started in Chapter 4, Introduction to the ACME Registration Service, our main() function looks rather simple, as shown in the following code:

func main() {   // bind stop channel to context   ctx := context.Background()   // start REST server   server := rest.New(config.App.Address)   server.Listen(ctx.Done())}

After applying several DI methods to our code, by Chapter 9, Just-in-Time Dependency Injection, our main() function had become the following:

func main() {   // bind stop channel to context   ctx := context.Background()   // build the exchanger   exchanger := exchange.NewConverter(config.App)   // build model layer   getModel := get.NewGetter(config.App)   listModel := list.NewLister(config.App)   registerModel := register ...