Hands-On Dependency Injection in Go

Adopting provider sets

The last concept that we need to know when using Wire is provider sets. Provider sets offer a way to group providers, and this can be helpful when writing injectors. Their use is optional; for example, earlier we used a provider set called wireSet, as shown in the following code:

func initializeServer() (*rest.Server, error) {   wire.Build(wireSet)   return nil, nil}

However, we could have passed in all the providers individually, as shown in the following code:

func initializeServer() (*rest.Server, error) {   wire.Build(      // *config.Config      config.Load,      // *exchange.Converter      wire.Bind(new(exchange.Config), &config.Config{}),      exchange.NewConverter,      // *get.Getter      wire.Bind(new(get.Config), &config.Config{}),      get.NewGetter ...