The functional programming paradigm was explicitly created to support a pure functional approach to problem solving. Microsoft introduced FP support with the release of .NET 3.5. This is the first in a four-part series on things I wish someone had explained to me about functional programming. A course on functional programming at Cornell University. Functional langauges empazies on expressions and declarations rather than execution of statements. In order to make the most of this, I suggest choosing the language with the most different perspective: Haskell. Functional programming is one of the first paradigms (invented around the time of procedural) and has fed the other paradigms ideas and features since its inception, including the if statement. My two cents with respect to functional programming is to not get hung up on a particular language, but learn the key concepts of functional programming. Data Structures and Functional Programming Spring 2020 Why Learn About Functional Programming? Do not think of functional programming in terms of a "need". You don't need a PhD to understand functional programming. What is Functional Programming? You will learn a lot just by working in a language with so much history. Ultimately, learning functional programming will make you a better programmer. That means FP does not deal with how to do (lines of code for achieving some functionality) but speaks about what to do. I know what you’re thinking. Functional programming is a form of declarative programming . Functional Programming (FP) in simple words is a "Declarative Programming". Functional programming is a style that emphasizes immutable data, functional primitives, and avoidance of state. But it ought not to be. My studying of Functional Programming has profoundly influenced me, and this data-centric approach arises from this studying and learning. The concepts are abstract, yes. Following the FP philosophy entails foregoing things like shared states, mutable data and side effects. Functional programming (also called FP) is a way of thinking about software construction by creating pure functions. It avoid concepts of shared state, mutable data observed in Object Oriented Programming. You wrote some Lisp in college and dreaded it. I learned functional programming by being tossed headfirst into a project in which my boss insisted all development be done in APL. Functional programming (FP) is a programming paradigm for developing software using functions. Even if you never end up using functional programming, learning it teaches you new ways to think. But that doesn't make them incomprehensible. It's hard learning functional programming on your own. Another good way to learn Haskell is to do so while following Erik Meijer’s MOOC on functional programming on edX, which you can follow along in Haskell or one of several other languages. 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