In this project, Design Patterns have been applied to the existing android application Virtual Receptionist code to make the code better. The Bad Smells have been recognized and removed from the code which we call, Refactoring.

(demo gem) Quickly build virtual proxies in Ruby

Virtual proxy functionality, fine-tuned for lazily loading related classes.

Contravariant and Covariant injection for Microsoft.Extensions.DependencyInjection

Lazy injection for Microsoft.Extensions.DependencyInjection. Decorates registered services with lazy proxies that instantiate the original service only after the first method or property call. Intended to prevent the creation of unused injected dependencies.