Package inject provides dependency injection for Go. For small Go applications, manually constructing all required objects is more than sufficient. But for large, modular code bases, dependency injection can alleviate a lot of boilerplate. The following example illustrates a simple modular application. First, the main package installs configured modules and calls an entry point: Next we have a simple Mongo module with a configurable URI: The logging package shows idiomatic use of inject; it is just a thin wrapper around normal Go constructors. This is the least invasive way of using injection, and preferred. Two interfaces to the injector are provided: SafeInjector and Injector. The former will return error values and the latter will panic on any error. The latter is commonly used because DI failures are typically not user-recoverable. See the [README](https://github.com/alecthomas/inject/blob/master/README.md) for more details.