CS-343 Post #1

After the past few activities in class I was trying to think of what I wanted to look for to do my first blog post on. The one topic that caught my attention and I wanted to look more into was Design Patterns from activity 4. The strategy design pattern that we used in model 8 to improve the DuckSimulator seemed very effective to me, and I wanted to look more into design patterns after reading a bit about them in models 8 and 9. I found a blog post that goes over the strategy design pattern and when reading it, it went more in depth with the pattern than I thought it would based on the title of the post, “Keeping it Simple with the Strategy Design Pattern”, from Bits and Pieces.

The post briefly goes over Object Oriented Programming, then it focuses on the different aspects of the strategy design pattern. The parts of the pattern that the post goes over are its basic idea, structure, examples, authentication strategy, the problems it solves, SOLID principles, how it’s used in JavaScript, and when to use it.

Some of the material was familiar to me from previous courses that I didn’t think would show up, but it made sense that it did, such as the sorting algorithms, such as bubble sort and linear search, being used for the strategies being represented based on the data and objects in the program. Diagrams used for the pattern also were very similar to the ones used in the activity to show the structure of the pattern with the implementation of context, interface, strategy, and concrete strategy.

What was less familiar to me where the authentication schemes and strategies, such as basic and digest, that are brought up later on in the post. I did not know the specific schemes brought up, but I got the idea behind their usage for authenticating data in the program. The schemes were also used in examples for the strategy design pattern by showing an interface being used to have an authentication method that is implemented by the schemes.

The main problem resolved by the pattern is the hardcoding of the program, which can make in run less smooth and more complex/complicated than it needs to be. Using a pattern prevents this by breaking down the program into different tasks and classes that keeps the algorithms more understandable and usable. This is reflected in another example with a given Printer class with multiple classes, but is also shown in the final DuckSimulator version.

In conclusion, the strategy design pattern is effective at improving complex programs, keeping the classes manageable, and keeping the methods and algorithms separated from each other.


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