I have been writing code in Imperative programming languages for many years. Writing code in functional programming is a big shift and change in thinking. As I recently started with Elixir and when I was reading about Functional Programming, I keep reading mention of Lambda Calculus every time. That ignited my curiosity to brush up my computer science knowledge. As Functional programming languages implement Lambda Calculus(λ-calculus). If we understand how Lambda Calculus notation works from Computer Science perspective it will be easier to understand Functional programming. As nowadays most of the languages have implementation of lambda calculus may it

Few weeks back I was reading a blog about concurrency limitations in Ruby (which we all are aware since long) and how Elixir is evolving. Thus I was extremely curious to know this new dynamic functional programming language "Elixir", the two decades old Erlang language & Erlang Virtual Machine (VM) known for running low-latency, distributed and fault-tolerant systems. This article is a result of my curiosity about Elixir and Erlang. This article does not cover (i.e. out of scope) installation steps of Elixir & Erlang on Mac, Ubuntu or Windows machine as lot of help is already