Make a Personal Learning path — Kan-ban board After 14 years of professional development, if i could go back to my early developer days, i would have designed my own learning path and made sure i followed it. Sure, i had formal Computer science education, which in hindsight is [almost] completely useless. Academia is consistently lagging behind what…

This is an article about functional Recursion on the Array data structure. This article was inspired by the article “Functional JS with ES6 — Recursive Patterns” but here we are going to take a road that is more profound and has to do that the algebraic definition of a List…

One can argue that composing functions is the most important idea in programming and functional programming in particular. The idea of compositionality is of monumental importance in human thinking. Creating systems by composing smaller systems that are easier to implement and design can be found in all levels of programming…

Functional composition is in the heart of many object-oriented best practices. Here we will see an idiomatic expression of the Decorator design pattern, which is one of the most used object-oriented design patterns from Gang of Four. Let start with simple example where we have a ProductA , and we…

github repo : https://github.com/dimitris-papadimitriou-chr/FunctionalJsWithCategories/blob/master/monads/state-example-1/demo.js This is a short article on how to create a game loop using the State monad. Unfortunately i am not going to cover the theory of State monad in this article but hopefully i would do this in a subsequent article. using the State we can…

Functors are closed under composition. This means that we should be able to construct a well-behaved map method for the composition. Functors are closed under composition. The term closed means that if we have two functors and we compose them (have a functor-in-a-functor situation like Maybe<Id<>> or Maybe<Array<>>, Array<Array<>> etc)…

Source Code This article wants to intergrate the Folktale.js Maybe type in a React.js application We are going to use the Maybe type from a Functional Library called Folktale.js. Folktale is probably the 3rd most popular Functional library (after Rambda and Senctuary.js) If you are not familiar with the maybe…

Source Code .NET Fiddle : Maybe Monad Example C# 8.0 Pattern Matching To be honest i didn't like the pattern matching feature the first time i show it. But i rewrote some sample functional code and i can say i might be a fan. if you are not familiar with…

Source What is pattern matching ? Lets say that you have a simple hierarchy of shapes Now if i make an assignment to a Shape variable . I can assign either a rectangle or a circle. Here i will go with the rectangle Shape shape = new Rectangle {…