Category Archives: Week 11

Sprint 4 Retrospective

Sprint four lasted from March 27th to April 8th. I was sick for the first class, but it wasnt hard to catch up on what the rest of the team was planning for the rest of the sprint. By the end of it, we’ve made a lot of progress, our group currently has a working prototype for our final presentation. After this sprint, or the next, we should be able to focus more on putting our presentation together since our project will likely be working and polished by then.

Recently we’ve brainstormed a list of improvement ideas to work on, polishing the project while we still have time. Some of the improvements include changing the header colors around, making the words bigger and easier to read, adding more buttons, and doing more with the title on the page. Many of these features are quick fixes, typically each one will take less than an hour. This sprint is likely going to change dynamically as we think of good ideas or quick changes.

We decided not to implement a login feature, or rather, it has a low priority and we will do it last if we have extra time on our hands. Additionally, the way we divide up work will be different than described in my last retrospective. Each button in the navbar is more of a placeholder, not exactly designed to perform a specific task other than change the text in the middle of the screen. Instead, each member will be given minor to moderate tasks to complete like the ones we planned out in our last class.

First we made sure to download the required angular material, our group member quoc took the liberty of creating a skeleton project and pushing it to gitlab. We all downloaded the skeleton, and have since made improvements on the style and layout of our navigation bar. Of the features we brainstormed, in class we quickly completed centering the text, which makes it much easier to read. Currently, we are also quickly working on changing the color values, which will also be completed soon.

My role in the group is to figure out how to have a nested button within one or multiple side bar buttons. The idea is that we could have a category named button that also works as a drop down bar, offering a few different buttons based on the category. My assignment seems not difficult, but also not as easy as changing color values, which is why some group members have multiple low effort tasks while I only have one moderate effort task.

Completing this by the end of the next sprint, along with everybody else’s contributions, results in a very usable product for our final presentation. To accomplish this, two tutorial videos were posted to the team backlog on github which each group member is assigned to complete as homework, though ideally the videos will help shorten the amount of time our contributions will take. I’ve linked both tutorial videos below:

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

Studying the Classics

For this weeks Blog Post I will be looking into the pattern known as “Study the Classics” where one is but to study the classics. The context behind this one is that you are self-taught or valued skill training over theory. The problem that would arise from this could be experienced people collaborating with you are constantly referencing concepts that they have assumed you read. But since you are value practice over theory you may have skipped over this reading/research. This will of course cause some problems, perhaps nothing serious but will lead to some confusion between the two parties. A solution to this is go back and study the classics if you will. If you were to pick up a book and think how old or out of date this book is, then you are probably reading the wrong kind of book. Successful apprentices will tend to focus on long lived books (classics) and use the internet or through practice to see how the information has evolved exactly. A classic they give in the excerpt is “The Psychology of Computer Programming” while this is “dated” wit h its punch cards and room sized computer parts the book was non the less relevant with is wisdom. Classics portray vital information to keep you heading in the right direction down on the Long Road, another apprenticeship pattern. By just focusing on classics you may take it to far and abandon more pragmatic knowledge and information that would enable you to improve your day to day craftsmanship. A simple remedy to this is to just mix the classics with modern, pragmatic books and/ or articles to your reading list. A way for this to act is simply pick up the oldest book in your pile. Or if you are looking through another developers book, take not of the oldest books and ask them why they still own them, sparking a conversation relevant to its wisdom it gave. Overall this is something I see myself doing down the road.

From the blog CS@Worcester – Matt's Blog by mattyd99 and used with permission of the author. All other rights reserved by the author.

Reading Railroad

Read Constantly is a brief section, but it is an important apprenticeship pattern. Read Constantly is what it says. You need to constantly by reading and introducing yourself to new information in order to learn new ideas and improve. Most of the learning you do is from reading, whether its from sources on the internet or chapters of a good programming book. The more often you read and the better reading skills you develop, the better off you will be.

There is a book out there for every different programming language, every concept, every challenge you will come across in your professional career. I am currently reading a book that discusses the whiteboard problems brought up during many coding interviews. The book is long, and the content inside is dense, so it is important to read it carefully, take notes, and read it again to be sure of the information. That is my usual strategy for reading information that I need to learn.

My biggest challenge with reading constantly is feeling like I’m not absorbing all the information because I’m just trying to get through it. That’s why it is always good to do exercises in the book, if any are provided. That way you can do practical work alongside the reading that helps break up the monotony of reading and also gives you a different way to learn the content.

Another good strategy I use when reading is to take notes. There are often ways to boil down a text to its essential parts and the things you need to focus on and remember. Keeping notes, highlighting key lines, and keeping track of answers to exercises is a good way to maintain a reference if you ever want to brush up on what you just read.

Read Constantly is an important pattern when you want to learn something new or build a new skill. Good reading habits can open the way to learning lots of new things in a short period of time. It is absolutely the best way to learn quickly, especially if you are an independent person.

From the blog CS@Worcester – Let's Get TechNICKal by technickal4 and used with permission of the author. All other rights reserved by the author.

Journey into “Retreat into Competence” (An Individual Apprenticeship Pattern)

On this Software Development Capstone journey part of my assignment is to choose 10 Individual Apprenticeship Patterns out of 35 patterns among Chapters 2-6 from the book Apprenticeship Patterns: Guidance for the Aspiring Software Craftsmanby Dave Hoover and Adewale Oshineye. For my seventh individual Apprenticeship pattern I have chosen to do “Retreat into Competence”.


There will be times, where you will feel completely over whelmed because you have taking on more than you can handle. Feeling over whelmed can be caused by other circumstances like having lack of knowledge and/or lack of understanding on just about anything regardless of complex level. Using the “Retreat into Competence” pattern is a good solution for this dilemma, even if  this solution is only a temporary solution. This pattern suggest that when you are way over your head the best solution is to take two steps back in order to be able to take 10 steps forward towards the right directions. The way the book puts it is to “Pull back, then launch forward like a stone from a catapult. Retreat briefly into your competence to regain your composure.” We must understand that to use this pattern we must set a time limit to our break or however long we choose to take a break. The reason is that if we take to long we can get stuck and never end up moving towards our true end goal. Another suggestion given is to seek guidance from your mentors because with their help and the new information you had picked up from your past experience will help you “be better equipped to handle the inevitable bumps on the road when you try again”.


My Reaction

This pattern helps you understand the importance needed to retreat into competence in order to have a clearer mind that can help you solve whatever, issue you might be facing at the moment. I agree with this idea because I found this pattern to be interesting but also useful and thought-provoking. This pattern has definitely changed the way I think about my profession and the way I think because it has made me realize that I should not panic if I do not know something but instead I should be taking steps back to see the big picture in order to be able to move forward and handle the situation I was presented with.

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.

Object Oriented Design Principles

Hello dear readers. Welcome back to my blog. As we know by now most programming language support and encourage object-oriented programming and in this blog post we are going to talk about the principles of the Object-Oriented Programming. The key design principles of Object-Oriented Programming are:

Abstraction – is the idea of simplifying a concept to its bare essentials in some context. It allows you to better understand the concept by stripping it down to a simplified version. Your abstraction should be intuitive.

Encapsulation – can be thought of as putting something inside a capsule. In software, restricting access to inner objects and properties helps with data integrity. Encapsulation makes your classes easier to manage, because you know what part is used by other systems and what isn’t. This means that you can easily rework the inner logic while retaining the public parts and be sure that you have not broken anything. A disadvantage of it is that working with the encapsulated functionality from the outside becomes simpler as you have less things to think about.

Decomposition – is the action of splitting an object into multiple separate smaller parts. Spitted parts are easier to understand, maintain and program. There exist three types of decomposition relationships: 1. Association, which defines a loose relationship between two components. They don’t depend on each other but work together. 2. Aggregation, which defines a weak ‘has-a’ relationship between a whole and its parts. The parts though can exist without the whole. 3. Composition, which defines a strong ‘has-a’ relationship where the whole and the part can’t exist without each other.

Polymorphism – is the ability for data to be processed in more than one form. It allows the performance of the same task in various ways. It also consists of method overloading and method overriding.

Inheritance – is the ability of one class to inherit properties of another class, called the parent class. We can inherit properties from other classes s well.  So, when we create a class, we do not need to write all the properties and functions again and again, as these can be inherited from another class which possesses it. Inheritance allows the user to reuse the code whenever needed.

Design principles are rules in software design that have proven themselves valuable over the years. Just like any other ‘game’ even when we code we need to know and follow the rules. This is the main reason why I choose to write about the principles of Object-Oriented Programming.

From the blog CS@Worcester – Danja's Blog by danja9 and used with permission of the author. All other rights reserved by the author.

Discovering Backend Frameworks

Developers need a backend framework to create an application with which user can interact and perform some actions (which result in responses). In this context, the backend is defined as the subordinate processor or program (not directly accessible by users), which performs a specialized function on behalf of a main processor or software system. You … Continue reading Discovering Backend Frameworks

From the blog cs-wsu – Kristi Pina's Blog by kpina23 and used with permission of the author. All other rights reserved by the author.

TypeScript and Object-oriented Programming Fundamentals

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Anders Hejlsberg is known as the creator of TypeScript. On 2010, he and his team began developing TypeScript, and in 2012 they released TypeScript 0.8 for the first time. There were several versions of TypeScript released since 2012. The last version announced is TypeScript 3.2 RC, which is the release candidate of the next version. According to Anders Hejlsberg, JavaScript is TypeScript, but TypeScript is not JavaScript, which makes TypeScript a superset of the JavaScript language. That means that any valid JavaScript code is also valid TypeScript code.

TypeScript has additional features and does not exist in the current version of JavaScript, supported by most browsers out there. In TypeScript, we have this concept of strong or static typing. If you have worked with languages like C# or Java, you know that in these languages when we define a variable, we need to specify the type of that variable. In TypeScript typing is optional so we don’t have to use this feature. But using this feature makes our applications more predictable and it also makes it easier to debug them when something goes wrong. Typescript also brings Object-oriented features that we have missed in JavaScript for a long time. We have the concepts of classes, interfaces, constructors, access modifiers like public and private, fields, properties, generics, and so on. Another benefit of using TypeScript is that with TypeScript we can catch errors at compile time instead of the runtime, of course not all errors but a lot of them. There is a compilation step involved, and when we compile with TypeScript code, we can catch these errors and fix them before deploying our application. And finally, another benefit of using TypeScript is that we get access to some great tools out there. One thing that I personally love about TypeScript is the autocomplete suggestions that we get in our code editors as we are coding, like Atom and Visual Studio Code.

TypeScript is a beautiful language but the browsers that we use every day don’t know TypeScript, and it is very unlikely that the browsers are going to support TypeScript in the future. So, we need to compile or more accurately Transpile our TypeScript code into JavaScript code.  This is part of building an application. Whenever we build an application TypeScript compiler kicks in and it Transpiles TypeScript code into JavaScript code that browsers can understand.




From the blog CS@Worcester – Gloris's Blog by Gloris Pina and used with permission of the author. All other rights reserved by the author.

Journey into REST APIs

As I take another step towards my journey in software C.D.A. I dive into REST APIs. Where I will be talking about the YouTube video I found “APIs|REST|REST APIs Demystified” from The TechCave. For this weeks blogs I am going to try things different. I will give a very short summary of what the blog talks about and if you are interested in the topic I strongly suggest watching the video it is very interesting and on point to the topic. The video also provides a short example to help you understand and see how rest APIs works using Node.js.

This video talks about what an API is, and how it relates to a web service and/or relates to REST. This is a very interesting video because it seems to cover a lot of basic knowledge needed when dealing with APIs, REST, or RESTful APIs. It also talks about what a person needs to start building APIs. In the video the presenter answers the following three question:

  1. What is an API?
    • Also known as Application Programming Interface, that has the ability to give software component a way to communicate with each other.
  2. How does it relates to web services?
    • API relates to web services because they both work as a communication sharing base between services or components.
  3. What is a REST API?
    • “Is an API that follows the rules of the REST specification”.

for more specification on those question just watch the video by clicking the highlighted link above. I have to say that from this video I found the following tip from the video very useful and interesting… “Questions every API should answer:

  1. How can the client tell the service provider which operation it wants to perform?(Method information)
  2. How can the client tell the service provider what data to operate on?(Scoping information)”

That is because it helps you understand during building the API it needs to answer those question in order to make sure your API would be successful. This video is not just interesting… it was also useful. From now on when building an API I will ensure that it answer those two questions.

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.

Machine Learning vs. Deep Learning


In the article Machine Learning vs. Deep Learning Explained, Bartek Ciszewski explains the difference between Machine Learning (ML) and Deep Learning (DL). He gives a quick overview these two terms are and also talks about the broader field of Artificial Intelligence (AI). He also gives examples of what machine learning and deep learning can be used for as well as providing real world examples of DL, such as Google’s Go playing program, which is capable of inventing its own moves.

Reaction to Content

I chose this topic because it was an interesting topic that I had looked into in the past but haven’t really done much research on yet. This article in particular was mainly useful as a refresher, providing a basic overview of the difference between machine learning and deep learning. Some of the real-world examples that he brought up (AlphaGo, self-driving cars, early automatic cancer detection, etc.) are definitely things that I think would be interesting topics to read about in order to get a deeper understanding of how deep learning works.

Overall, this article didn’t change how I thought about this subject. For those who haven’t seen these concepts before I think this article would be a useful place to start. The examples he provided for machine learning algorithms are helpful for understanding what it could be used for, but it seems like it’s very difficult to provide a simple example of what a deep learning algorithm could be used for due to how complex of a topic it is. As Ciszewski stated in his summary, neural networks are usually “black boxes,” so even the people who created the deep learning algorithms don’t entirely understand how the machine is able to do what it is being designed to do.

This video How Machines Learn, by CGP Grey, is another useful resource that helped me understand the topics discussed in the article better, by providing more use cases for them as well as giving a visualized high level overview of how these algorithms work.

I think in order to truly understand how deep learning works, I’ll have to look into example algorithms and go from there.


From the blog CS@Worcester – Andy Pham by apham1 and used with permission of the author. All other rights reserved by the author.

test | prueba | thử nghiệm

CS SERIES (10)If you happen to be reading this page translated from English to another language, hello there, you are one of the main characters of this blog post. Without linguistics, the study of language and its structure, we probably would not be able to figure out how to communicate everything we need to globally while being able to understand it at the same time while testing. There are so many online resources that cover what a specific country or region in a country uses in terms of data formats for their computer systems.

Stickyminds featured an article from Mukesh Sharma on Linguistic Testing: Setting Up Your Software for Global Quality. Sharma dives in by explaining what exactly linguistic testing is–which is testing not only localization but also internationalization. These words basically mean everything we are testing on the software either is or would be fully functioning across the globe.

I found this content thought-provoking as I never specifically thought about how developers and testers would have to consider culturally-aware attributes like the formatting for texts, dates, and currencies. As more and more people are gaining access to the internet across the world, that means there are even more and more platforms to test for gauging market readiness.

An example of a situation that could happen in real life I can think of when testing functionality on websites is for international shipping addresses. If a user, we’ll call him Zayn, from London, England is ordering something from a company based in Boston, Massachusetts (USA) and puts in his shipping address, it should not require him to select a “State” under one of the fields after he selects “United Kingdom / England” as his country option. If that field still requires Zayn to select a state when his country location does not have states, there is a problem.

This will change the way I think when I work as when developing code to solve problems or create something new, I will have to think about if the market or target audience goes beyond the USA. When testing the code, of course every possible scenario must be tested already but there will have to be more details to make sure it all goes smoothly–especially since international errors or problems usually take up more effort to fix as communication plays a big factor.


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