fp-course

The tooling (Visual Studio, LSPs, etc.) around F# is very lacklustre, I wish it had better support from MS. At the moment F# just seems to be a playground for experimenting with FP ideas that then get ported to C#. As for learning a functional language, I recommend this Haskell tutorial[0], and accompanying video series of an experienced haskeller (Brian McKenna) running through it[1]. I've read countless texts and tutorials explaining Haskell and FP to me but it didn't fully click until I saw someone with experience using the language and tooling effectively. [0]: https://github.com/system-f/fp-course [1]: https://www.youtube.com/playlist?list=PLly9WMAVMrayYo2c-1E_r... There are a few other video series from other experienced haskellers available that may be better, too, I just haven't watched them so I cannot comment.

Pretty cool. They note that they are inspired by Go by Example [0] and Rust by Example [1], and this book seems stylistically similar to the community-driven Learn X in Y minutes site [2] which covers quick syntax/conceptual overviews for many other languages as well. For the same target audience looking for free introductory coursework/exercises for Haskell, I'd recommend working through the Data61 Haskell course [3]. Brian McKenna has a nice Youtube series [4] covering it. [0] https://gobyexample.com/ [1] https://doc.rust-lang.org/rust-by-example/index.html [2] https://learnxinyminutes.com/ [3] https://github.com/system-f/fp-course#readme [4] https://www.youtube.com/watch?v=NzIZzvbplSM

As a small demonstration of the principle: https://github.com/system-f/fp-course#demonstrate-io-maintai... Scroll past the Haskell example for a moment and look at the Python. The program p2 is the same as p1, except a refactoring is performed: the call to readFile(file) is DRY'd into a variable, and this changes the meaning of the program. In the Haskell example, the same refactoring is performed. Because IO actions are treated as values in their own right, the refactoring does not change the meaning of the program. Executing p1 or p2 will have the same effect.

The sad part is that this is a common experience - universities have done a bad job at teaching FP. I think there are good pieces of FP education, particularly Learn You a Haskell and https://github.com/data61/fp-course - friends have gone through these have questioned "why wasn't I taught like this the first time around". > I've never touched any FP since, unless you count borrowing clever lambda snippets. I'd urge you to give it another shot if you have spare time. Even in spite of all the dogshit things associated with it, it's a paradigm I've bet my career on.

I think it depends on what you are doing. If you are just doing API plumbing, the idea of introducing more rigor into the process may seem somewhat absurd. If you are doing real programming, however, Haskell allows you to elegantly structure and think about a problem. Certainly in parsing applications Haskell is a no brainier, Pandoc is written in Haskell for example. People are saying Rust is going to be the chosen one that brings it all together. For anyone interested in Haskell, I recommend starting with http://learnyouahaskell.com/ (very friendly, intuitive and light) then doing these exercises: https://github.com/data61/fp-course.

Re: math, composition and universal abstractions Folks please read https://github.com/hmemcpy/milewski-ctfp-pdf Re: learning Haskell Best way is to do it https://github.com/data61/fp-course and https://m.youtube.com/playlist?list=PLly9WMAVMrayYo2c-1E_rIR...

This is the text Christopher allen recommended to beginners as the best reference, until he decided to write his own book on Haskell. After completing that one, he recomended the NICTA github repo https://github.com/data61/fp-course/tree/master/src/Course Disclaimer: All subject to IIRC

For people who wanna learn Haskell: 1. Don't touch Haskell platform. Install Stack. If you did, Uninstall it. https://mail.haskell.org/pipermail/haskell-cafe/2011-March/0... Why? It is considered harmful https://mail.haskell.org/pipermail/haskell-community/2015-Se... 2. Install Stack: https://haskell-lang.org/get-started/osx If you do not wish to install these dependencies, you may use a virtual machine instead https://github.com/data61/fp-course/blob/master/ops/README.m... 3. Learning resources: https://github.com/allenleein/brains/projects/9

There's only one way to learn Haskell: you have to use it! Both links below show how friendly the Haskell community is for people willing to learn: https://github.com/NICTA/course/blob/master/README.markdown https://github.com/bitemyapp/learnhaskell/blob/master/README... Good luck on your journey!

http://learnyouahaskell.com/ https://github.com/NICTA/course/ http://www.cis.upenn.edu/~bcpierce/tapl/ http://www.haskellforall.com/2012/06/you-could-have-invented... http://www.amazon.com/How-Prove-Structured-Daniel-Velleman/d...