Design PatternsDesign Patterns are an essential tool for any object orientated programmer who wants to take his/her skills to the next level. Understanding the specifics of Design Pattern practices and methodologies will help developers uncover reoccurring patterns in software development and give them the tools to apply the correct solution.Types of Design PatternsInformal Design Patterns - such as the use of standard code constructs, best practice, well structured code, common sense, the accepted approach, and evolution over time.Formal Design...