This is an entry for the F# Advent Calendar 2019.

In this post we will be building upon some of the concepts we have learned in previous posts whilst investigating functional collections.

In this post we will be building on the function composition concepts we worked through in the previous post and we'll be writing our first unit tests in F#. As an added bonus we will also start looking at how we can separate our code into discrete modules.

So far in this series we have covered a lot of the fundamental functional programming concepts. In this post we will investigate null handling and exceptions.

In the last post, we learned about some of the core features of functional programming in F#. In this post we are going to concentrate on functions.

This series of posts will introduce you to the world of functional programming (FP) in F#. Rather than start with theory or a formal definition, I thought that I'd start with a typical business problem and look at how we can use some of the functional programming features of F# to solve it.