Smartik .NET

As part of my "GoF Design Patterns - The Hot Spots" posts series, this post is focused on two Design Patterns: Bridge and Strategy . Although these two DPs are completely different, when googling them we encounter several common misconceptions that may make us think that Bridge and Strategy are similar or even same patterns. I am not sure why but one of the popular misconceptions is that these two DPs shares the same UML diagram. We will dig into the original GoF Design Patterns (aka: DP) description trying to figure out the real Hot Spots (aka: specific particular parts that differentiating them from each other) of these two DPs and the relationship between them. In order to maximize the clarity of this article, I used two conventions: Phrases inside [square brackets] are meant to help understanding GoF definitions Italic sentences are GoF's book citations Strategy GoF Definition "Define a family of algorithms [Classes that inherits from the ...

As part of my "GoF Design Patterns - The Hot Spots" posts series, this post is focused on two Creational Design Patterns: Factory Method and Abstract Factory. We will dig into the original GoF Design Patterns (aka: DP) description trying to figure out the real Hot Spots (aka: specific particular parts that differentiating them from each other) of these two DPs and the relationship between them. In order to maximize the clarity of this article, I used two conventions: Phrases inside [square brackets] are meant to help understanding GoF definitions Italic sentences are GoF's book citations Factory Method GoF Definition: " [1] Define an interface for creating an object, [2] but let subclasses decide which class to instantiate. Factory Method lets a class defer instantiation to subclasses." GoF Description & Hot Pots: "Consider a framework for applications that can present [handle] multiple documents to the user. Two key abstractions i...

Intro Now days, any programmer working with a language which conforms to the OOP paradigm, understands the power of Design Patterns (DP). A variety of great books are available for plain English interpretations for the various 23 GoF design patterns and the differences between them. Yet, there are still many controversies regarding how certain patterns differ and how they are related. Design Patterns, at first glance, sometimes appear very similar, not to say identical. When searching answers in forums, articles and blogs, I have encountered in a wide range of responses, starting from "It's the same DP and the only difference is the intend of the developer" and reaching "the questioned DPs are completely different and I can't even understand your question". If you sense that the truth lays somewhere in the between those responses, this new series of posts might interest you. This post is a first in a new series of posts, in which I will try to highl...