Earnest Engineer

I have been caught at odds when asked about some of the key differences between Object Oriented Programming and Functional Programming. In fact I’ve felt somewhat like a fraud, in that I regularly work in both paradigms. I often keep in mind the many of the precepts of functional design in the methods of objects I am creating. So, I was looking to see what others had to say on FOOP (Functional Object Oriented Programming - or perhaps POOF “Programming Object Oriented Functionally”?) and I came across a post on Lambda the Ultimate which let me know I am not alone. This lead me on to further investigations on the questions I was pondering such as where the different types of programming work - and when they don’t. A good synopsis of this started on Stack Exchange of course... These readings exposed me to a key nub of the problem - concisely stated, which has the name of “The Expression Problem”. The expression problem is well stated in the best answer in the stack exchange po