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Applicative Functors and data validation

I am currently reading Haskell Programming from first principles, also known as the Haskell book, as part of my journey to learn functional programming. The book has helped me to acquire many new intuitions and I will share two of them, Functors and Applicative Functors....


Setting up IntelliJ for Rust

This post is a part of the upcoming codurance series on different ways of setting up your Rust development environment. This time it's IntelliJ. Why IntelliJ? There are lots of good options for Rust development. The classics are perhaps CLion and vim/emacs. IntelliJ has one...


Setting up Rust development environment using VSCode on a Mac

This post is a part of the upcoming series on different ways of setting up your Rust development environment. It's time for VSCode. Completion and highlighting While on Linux VSCode with the Rust plugin seems to work more or less out of the box, on...


Falling into Machine Learning

Recently, I rediscovered my passion for Mathematics and Artificial Intelligence, which I used to hate during my degree in Computer Sciences. Lately, I’ve been focused on Software Design, Automated Testing, Microservices, and Functional Programming. I also love learning new programming languages, so I’ve been wondering...


Functional Programming and Reactive Architecture Part 2

Reactive systems As engineers we want to build systems that are valuable for the consumers; a reactive system strives to provide a correct answer in a timely manner to its users whether they are humans or other systems. For this reason a fundamental quality of...


Java Optionals For More Expressive Code

Any of us who has programmed in a language that permits null references will have experienced what happens when you try to dereference one. Whether it results in a segfault or a NullPointerException, it’s always a bug. Tony Hoare described it as his billion-dollar mistake....


Delegates as Type Aliases

In this post I will walk through how to refactor a Factory, moving from a sequence of ifs to a dictionary implementation, and using delegates as a type alias for my object creation methods. Here is a naive implementation of the Factory. You can see...


Software Design Bias

This week we had a software design night at Codurance. We spent almost three hours talking about many interesting things but there were a few things that really stuck with me: We all have software design bias. Project after project, we build our software design...


Fractured Skill: Compartmentalising Software Development

An assembly line is where the machine or a process directs the person to perform a well-defined task. Here, the person is little more than a piece of the machinery to churn out the same product over and over again. There is no room for...


Katas For Functional Calisthenics

The Setup While working on katas to test the functional calisthenics I realized that some of the rules were not going to be covered by the rules for the katas that I had choosen. Therefore, some additional rules/premises/requirements to the katas were needed. Here I...


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