Proxy Pattern

Each application has different architecture to it. Architecture can vary based on functionality, extension, flexibility, and infrastructure. Programming for certain domains can require a certain approach. For instance, notice how a typical web application can be different from desktop application. Even without knowing the logic and purpose of the application, we know that they will … Continue reading Proxy Pattern →

Iterator Pattern

When programming, one gets to deal with all sorts of information representations. You have to make sure that information is accessible, accurate, and easy to interact with. It is important to provide proper channels of handling information representation, be it array or collection, or a single variable. In order to properly do that we often … Continue reading Iterator Pattern →

Facade Pattern

Applications reach different levels of complexity within the development time span. Some settle down with just several classes. Others make to dozens of classes and complex interrelations between them. When that happens you want to make sure that you have proper mechanisms of controlling it, and that those mechanisms are simple enough for client to … Continue reading Facade Pattern →

Command Pattern

Imagine that we need to develop an application for a hotel. What we need to make is a device with that has multiple buttons on it that correspond to certain actions: calling room service, requesting laundry service, getting latest menu from the restaurant, refilling refrigerator and so on. We want to be able to fit … Continue reading Command Pattern →