This week I decided to read a blog post for my blog entry. The blog post I read is titles “These tools will help you write clean code” by Adeel Imran. Before finding this blog post, I’ve had a general and basic idea about coding and how it should be written, but I haven’t understood in great detail how to properly write clean code. The reason I chose this blog is to learn and be able to use the clean coding techniques on my future projects so it will be easier for other people read.

Clean code is extremely important in becoming a strong software engineer and when working in a team having clean code is a must so your teammates can understand your code. The blog opens up by saying that in more or less all software engineering jobs you will be working with a new code base at one point or another and that inconsistency is a big fundamental problem when working with different code bases. The author ends the blog by saying “In the end, coding is writing” and as a developer our responsibility is to maintain a consistently so it will make our code easy to follow when being looked over.

Besides all of the great resources that it gives, a major takeaway from this blog that I will apply immediately to my next project is using clearer names. Before reading this blog if I wouldn’t put much effort into naming things in my project but I learned that applying clear names not only improves readability, but boosts the context making the intent of the code easier to read. If I am to use clear names it will help the reader understand more quickly.

My goal is to become a software engineer and in the CS program sometimes it is hard for me to write clean code because I am focusing on other parts of the assignment or don’t have this labeled well. This article has given me ways to write clean, effective code in the future and I hope it can do the same for you.

https://medium.freecodecamp.org/these-tools-will-help-you-write-clean-code-da4b5401f68e

From the blog CS@Worcester – Dcanton Blog by dcantonblog and used with permission of the author. All other rights reserved by the author.

Hello readers, welcome back. This week I will be talking about code reviews and why they are essential to the testing process in computer science. I read  a blog titled “what is code review and why is it so important” by Eugene L. who is a project manager. He begins his blog by talking about how code reviews is a great form of communication between team members and for junior developers, they can become more proficient through this communication and at the same time help improve the code. Although code reviews are used to spot bugs, they have resulted in teams understanding each other better which companies enjoy. Another point brought up in Eugene’s post is that code reviews increase productivity. Because the code will be reviewed by someone else  the developer will be motivated to write better code and make sure its flawless. Finally another reason code reviews are essential is that it helps the developer understand the product better and as a result will be able to communicate better .

This blog had great points and helped me understand why code reviews are  so important to when testing. When it comes to myself, sharing code hasn’t always been a strong suit with me because I tend to get nervous when other people view. I understand that I’m not the best and I understand after reading the blog that one of the ways to improve is by having my peers review my code. Feedback is necessary to have successful code reviews. If you’re working on a project with someone else or a team, you would want to make sure that everyone understands your code and how it effects the product, as a result it will improve the team chemistry. In my recent projects that I have had in my, I try to make sure that my code is understandable. Code reviews are a crucial part in testing and with them, the product will be much better than it would be without it.

From the blog CS@Worcester – Dcanton Blog by dcantonblog and used with permission of the author. All other rights reserved by the author.

Greetings reader!

In today’s blog,  I will be discussing the differences between black box and white box testing. This blog will briefly explain the benefits for each test, as well as point out their distinct features. I will also be sharing my analysis of QATestLab’s-“Difference Between White Box, Black Box, and Gray Box Testing” article from which I read. Without any further introduction, let’s begin.

Black box testing (BBT) is a testing method in which there is no access to the source code or the internal structure of software. The main goal of BBT is to check to see if everything works well from the view of a user.  Black box testing focuses on incorrect or missing functions, data structures errors, any graphical user interface errors, faulty software performance, and for any control flow errors.

Some advantages of black box testing are as follows. First, the tester can start designing test cases just after the specification is ready. Secondly, tests preparation time is short, and finally, there is no need for a tester to know the programming language of the application. The disadvantages of black-box testing: it is hard to design test cases without a specification, only some paths are covered , and it is impossible to to see what part of the code can cause a problem in future.

White-box testing (WBT) is a testing method where there is access to the source code and internal structure of the software (opposed to BBT). This testing type insinutates that a tester knows which code line is called for each function. It allows the tester to better choose an entry data set and to check errors and exceptions efficiently. White-box Testing focuses on bad code writing, conditional loops, the working flow of the code, and memory leaks.

Advantages of white-box testing are: there is no need to wait for the GUI application, it can conduct more detailed testing with more cases covered, and it can predict the potential problems in the software. The disadvantages of white-box testing is that a tester must know the programming language of the software, it can take much more time than other methods, and it can be expensive.

To conclude, there are advantages and disadvantages to both methods of testing, so there is none that is “better” than the other. They are both necessary and complementary.  The QATestLab’s-“Difference Between White Box, Black Box, and Gray Box Testing” article that I read was extremely informative and very easy to comprehend. I greatly recommend their articles to expand your computer science knowledge.

From the blog CS@Worcester – dekeh4 by dekeh4 and used with permission of the author. All other rights reserved by the author.

In his post “The Psychology of Design”, Blogger Jon Yablonski writing for the blog “A List Apart”, discusses the importance of software developers to understand some principles about heuristic psychology that are helpful in improving user experiences and overall design.

Yablonski begins by explaining the concept of Hick’s law, the notion that the amount of time it takes a user to respond to a situation depends on the volume of information the person is presented with. He uses the example of a television remote, and how as the number and complexity of devises increases, the more confusing the remote controls become. But by abstracting the features to those only absolutely necessary, we’re able to create a much more user friendly product, as demonstrated by the apple TV remotes.

The author also goes into the idea of Miller’s law, which is the assumption that people can commit to memory seven plus or minus two different objects. Yablonski goes into strategies designers have used to work around this inconvenience; namely chunking. Chunking is used to break up large or complicated amount of information into chunks, like the digits in a phone number, or breaking up a news page in discrete parts.

Finally, Yablonski explains Jakob’s law, that people tend to form their expectations based on previous models that we have learned. For example, most video game controllers tend to have a similar arrangements of inputs. This serves to lower the learning curve required in adopting a newer model.

Personally I think heuristic psychology is very useful in the area of software development. Understanding how our minds process information is an integral source of data to help us achieve our goals of creating efficient, user friendly software. By applying smart strategies like design patterns to help implementation, combined by the insight of psychology, we should be able to handle a broad range of situations and have a good array of tools to help solve the problem.

From the blog CS@Worcester – Bit by Bit by rdentremont58 and used with permission of the author. All other rights reserved by the author.

In our Software Construction class, we have been going over the design patterns used by developers everywhere. Our last test covered all of the design patterns, and after I got the test back, I decided to research more into the design patterns topic and I found the article, “How to make the perfect Singleton?” I found this article whilst browsing the internet looking for other articles, and this one jumped out at me.

The article starts off by discussing the purpose of the Singleton. I liked this section of the article because it provided some specific examples of when this pattern would and should be used. For example, it said it is “used when you have to control resources” (Patel), and it is used in database connections or sockets.

The article then goes on to show the reader how to create the perfect Singleton. It explains how to initialize it, and it explains how to make the class thread, reflection, and serialization safe. I actually didn’t know what it meant to make a class thread, reflection, and serialization safe until I read this article.

The interesting part of this article is how many new terms it introduced me to. The volatile keyword was brought up in this article, and I personally haven’t seen this keyword anywhere in my few years at Worcester State. The volatile modifier makes it so that the write of a certain variable is guaranteed to happen before the read of said variable. I also learned that making classes thread safe is essential for any “multi-threaded application environment” (Patel). They use Android applications as an example. I also learned how to make my Singleton class safe from Serialization, which is simply just preventing others from creating new instances by serializing and deserializing the singleton. I also learned how to prevent Singleton failure due to reflection. This was also very simple as you just have to throw a run-time exception in the constructor.

This article was a great read and contained a lot of useful information. I plan on using this information that I obtained in the future when I create more classes using the singleton pattern.

Link: https://medium.com/exploring-code/how-to-make-the-perfect-singleton-de6b951dfdb0

From the blog CS@Worcester – My Life in Comp Sci by Tyler Rego and used with permission of the author. All other rights reserved by the author.

As I take another step towards my journey in software C.D.A. I dive into Design Pattern, where I will be focusing on one of the patterns known as Adapter pattern. While searching in the internet I ran across a blog called Design Pattern Explained – Adapter Pattern with Code Example by Thorben Janssen.  This blog talks about Adapter Pattern which actually is one of the many Design Pattern type. This topic is chosen because it was one of the pattern talked about in my Software Construction, Design, and Architecture class. Since the blog by Thorben Janssen talks about the topic related to a class discuss topic, I choose this blog to write about it and summarize its content in my blog. The content in the blog is about the Adapter Pattern of Design Pattern. I will give a summary of what the blog was about and what it explained from my point of view and understanding.

According to Thorben Janssen research on Adapter Pattern, there are two different version of it. The type that uses inheritance and the type that uses composition.

What is Adapter pattern?

Also known as wrapper, the Adapter Pattern is a software design patter that allows the interfaces of an existing class to be used as another interface. In software development the adapter pattern has the same concept of those in real life, for example phone adapters.  Meaning adapter patter are similar to phone power adapters in the sense that one adapter can be used with many different USB devices cable. Say your at your friends house and you have an i-phone USB charger cable but no power adapter, and lets say your friend owns an android and only has an android charger. He can unplug is USB android cable from his power adapter and hand you his power adapter for you to use with your USB i-phone cable so you’ll be able to charge your phone. An adapter is convenient because it enables incompatible objects or devices to be used for the same purpose. The adapter pattern is also convenient because it allows you to use existing class or interface by introducing a new class that adapts between classes and interface without changing the existing class that is known as an adapter class.

In the blog “Design Patterns Explained – Adapter Pattern with Code Example” by Thorben Janssen he gives an applied example of the adapter pattern he referrers it as Brewing Coffee. I highly suggest you to click on the title so you can check out the example and see how he implements the adapter. I will end my blog here and let you do your own research on adapter pattern.

Thank you for your time. This has been YessyMer in the World Of Computer Science, until next time.

From the blog cs@Worcester – YessyMer In the world of Computer Science by yesmercedes and used with permission of the author. All other rights reserved by the author.