[PS] C# Design Patterns: Visitor Course (Apr 2020) + Project Files

Learning C# Visitor Pattern
C# Design Patterns: Visitor Course guides you through this advanced course, where he takes you on the inside of the Visitor design pattern, which is considered to be a famous behavior pattern in the Gang of Four. After approximately 30 minutes, you will discover why it is wise to decouple new operations from the objects they operate on; this way, your code will be more versatile and simple to maintain. Exploring the use of C# implementation in practice, the course would demonstrate how this pattern can bring structure and flexibility to your projects.

Significance of Visitor Approach
The Visitor pattern is aimed at managing a typical software problem of introducing new behaviors to a family of classes without continuously changing the source code of the classes. This way you will be able to keep your classes skinny, live within the principle of open/closed, and at the same time still be able to add functionality as the needs change. It makes it particularly helpful in situations when object structures may not be volatile, yet what kinds of things you want to do with those structures change frequently.

Step‑by‑Step Implementation
During the C# Design Patterns: Visitor Course, you are going to shift between theory and practical work. You will begin by gaining the meaning and the skeleton of the Visitor pattern, followed by a working demonstration of Visual Studio in which you will be led on how to code it. You will put together the interface to elements with Accept(visitor) methods, make concrete visitors, and test your implementation using real object hierarchies. Probably, after solving each of these examples, you will obtain a clear view of a way in which the pattern can be applied to daily development activities.

Applied Lessons to Real Projects
At the end of the C# Design Patterns: Visitor Course, you will understand when to pick the Visitor pattern, how to apply it successfully in C#, and how to make some of the more typical errors. You will also get to see this pattern shine, e.g., in compilers, expression trees, and complex data traversal. Knowing this, you will be able to write less cluttered, maintenance-friendly, and scalable code with your apps in the future.