Independent from program state: The value of the same input is always the same, regardless of other variable values.Įach function completes a single operation and can be composed in sequence to complete complex operations.Pure: They do not create side effects or alter the input data.While OOP programs excel at representing physical objects with unique traits, functional programs are purely mathematical and are used for complex mathematical computations or non-physical problems such as AI design or advanced equation models.Īll functions in the functional paradigm must be: Functional programming is a declarative programming paradigm used to create programs with a sequence of simple functions rather than statements. xxxix Best practices for examples and exercises.
I want to get comfortable with it so that I can shift how I think about Swift.” – Janie ClaytonĬontents Reader feedback.
Ii “I already have a lot of experience with Haskell, but I’ve never felt confident in it the way this book has made me feel.” – Alain O’Dea “Real deal with is that you don’t just learn Haskell you get a hands on experience as to why functional programming works.” – George Makrydakis “One of my goals this year is to evangelize and I think these tools will make anyone who uses them better. You can tell it’s written by someone who’s taught Haskell to programmers before.” – Christopher Jones There will forever be Haskell before, and Haskell after.” – Jason Kuhrt “I feel safe recommending Haskell to beginners now that is available, which is very beginner friendly” – Gabriel Gonzalez “”Structure and Interpretation of Computer Programs” has its credit, but is now my #1 recommendation for FP beginners.” – Irio Musskopf “The book is long, but not slow - a large fraction of it is made up of examples and exercises. So just like a good teacher isn’t presumptuous in what I’m supposed to know (which might force me to try and save face in case I do not, yet), information conveniently resurfaces.” – David Deutsch “When is done, it will be an unexpected milestone for #haskell. This book is a lot like having a good teacher - it never fails to provide the low-end information even though I have already moved on. Reader feedback “Astonishingly insightful examples.
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