A blog about stuff I find interesting as a developer
This blog is meant as kind of running insight into the things I learn and create as
a developer. This way I you can find out if my interests in coding are aligned with yours and if it
might interesting to collaborate or useful te ask for input. My focus is primarily on frontend
and reactive programming frameworks (Vue, React, Angular), but I am also focusing on creating a
strong foundation in more server side object oriented programming through a Java & App developer
Certification from the Open University. I also have a lot of experience in UX design and customizing
interfaces of existing projects or frameworks in order to enhance the user's efficiency and
experience. These questions are often strongly geared towards JS and SCSS, but I find good use of
basic HTML is often overlooked.
I hope you find an interesting read 🤓
Agile Use Cases
After getting into the groove of modeling everything as attribute-only classes in domain models, we are now looking at extracting methods from use cases and creating sequence diagrams to model the communication between objects in a system.
Just to recap the impressive speed of the stuff we are learning: in two sessions we have passed from the basic concept of objects instantiated from classes, to seeing how we can model the classes in a domain models and class diagrams along with object diagrams and sequence models.
What I found a particularly interesting exercise was defining proper use cases and thendeducting methods from these use cases. It's surprisingly tricky to succinctly describe the functionality of a system without becoming too specific for a use case. The exercise is particularly good though, because often you will find yourself developing in a diverse team with different skillsets. Being able to clearly define use cases, is already helping me better agree with the instructional designers on the requirements and functionality that I need to develop.
As for the UML notation, it's pretty tedious and I wonder how often I will encounter it in the wild, but I think for enterprises it's definitely a good tool to track, coordinate and document development. UML can definitely help to do this comprehensively and without too much overhead. It would be great to see a UML diagram for something like the Django framework just to get a quick overview of how the application is setup.
In summary, I'm really impressed with the amount of tools and techniques there are to model systems. I think they take quite a bit of legwork up front, but are definitely a good way to save a lot of headaches down the road.
Everything is an object
Why we are surrounded by objects (for now)...
In this first week of self study for the Java Certification the material has focussed on some basic tools and practices to map the world our us in the Unified Modelling Language. This is a very perspective to think about as you start getting really philosophical really quick.
In Object Oriented Programming every Object is instantiated or constructed from a Class. This Class is like the essential idea of an Object. Sounds pretty vague at first but anyone who has had a 101 in Philosophy in high school will quickly recognise Plato's cave. Take for instance the chair you are sitting on right now. You know it's a chair because it has four legs and a flat bit you can sit on, maybe it even has upholstery but it doesn't have to. It Could also be a chair if it had one leg or 10, as long as you could sit on it it would be a chair. This idea of kind of pealing away the Attributes from an Object until you get to a Class is what I've been getting to grips with this week.
An important key for this process (and your sanity) is to keep a keen eye on the system you are trying to model so you don't start tying to exhaustively trying to Model every single Attribute of the world around us in a system.
An interesting thing I have also come across lately online is a sense of cynicism on the future of Object Oriented Programming and how it's going to be replaced by Functional Programming. Having just started the study these aren't exactly the headlines that cause you to jump up and down clapping, but after having read in to it a bit I got quite excited.
Functional programming seems to complement Object Oriented in that it can offer better concurrency and multi threading when dealing with heavy data processing. This has lead to a myriad of languages springing up to offer a sound basis for these concepts. Some like Scala build on Java other like Haskell take a fully functional approach.
Obviously nothing is going to replace anything, there are just more and more techniques and tools being developed to solve different challenges. As a student I'm obviously eager to learn and in the future I will surely turn my attention to FP but for now it's fine to focus on the paradigm that has lead the last 30 years of computer programming and rests at the core of pretty much every electronic device in the world today.
One thing is for sure; I've still got a little ways to go until I master OOP to such a degree that I need the benefits of FP for multi-threading my heavy data processing 🤓
Java Dev: Day One
An exciting challenge and a great place to start a blog
So last Thursday the time had finally come to start a new challenge and take the train to Utrecht for the introduction session of the Java Certified Developer course of the Open University. After months of weighing the pro's and con's of committing to a study that would require 1,5 years, significant study hours and a tidy sum of money, the moment was finally there to see if it was all going to be worthwhile. I'm glad to say it definitely is.
There is of course quite little to say about a whole course just based on the first session, but as the instructor sketched his fields of interest (encryption, privacy and eHealth amongst others) and laid out the structure, I knew this was going to be a really cool challenge. After the first session I decided to start a blog on my experiences to keep track of all the things I learn from UML modelling to advanced object oriented programming - through data structures and algorithms - to the app lab with colleagues who specialise in everything from network architecture on trains to banking apps.
Anyway, for now we are still on getting to grips with the concepts of class, object, encapsulation and inheritance so no need to worry about all that just yet.
Thanks for reading this - I'm back to the books 🤓