caiorss / functional-programming

Functional Programming concepts, examples and patterns illustrated in Haskell, Ocaml and Python

Functional Programming by Example

The purpose of this tutorial is to illustrate functional programming concepts in many languages by providing reusable and useful snippets of code, examples, case studies and applications.

Author: Caio Rodrigues / <caiorss DOT rodrigue AT gmail DOT com>

Notes:

• This is a endless work in progress.
• This repository is dedicated to public domain.

This repository can be accessed from the following URLs:

• https://github.com/caiorss/Functional-Programming
• http://tinyurl.com/fpbyexample

The website of this repository is:

• http://caiorss.github.io/Functional-Programming
  • The project’s web site was updated and improved with a table of contents on side-bar. In addition, the new layout makes reading easier to read and browse the content.
  • Those pages in the theme are in the gh-pages branch which can easy be downloaded for offline usage.

General

• Functional Programming Concepts

Statically Typed Programming Languages with Type Inference

• Haskell
• OCaml
• Scala (JVM / Java Platform)
• Scala Recipes - Practical examples about Scala.

Dynamically Typed Programming Languages

• Scheme
• Clojure (JVM / Java Platform)

Papers

• Papers in this Repository

functional-programming's Issues

Typo in "Functor and Monad" of Haskell

Under Control Structures, in examples of For Loops

:t (putStrLn . show)
(putStrLn . show) :: Show a => a -> IO (

It should have been IO (), the closing bracket is missing.

Thanks for this nice repo, it's quite useful

"Type System > Basic Classes" section has Unicode private use characters

Convenient link - https://github.com/caiorss/Functional-Programming#basic-classes

I'm guessing these characters, whose code points are U+F0DE and U+F0AE, are supposed to be ⇒ and → respectively. They do correspond to those glyphs in the Symbol font but that's non-standard and they show up incorrectly in my browser:

You should use RIGHTWARDS DOUBLE ARROW (U+21D2) for ⇒ and RIGHTWARDS ARROW (U+2192) for →.

Haskell lecture video from RWTH-Aachen

Professor Giesl (http://verify.rwth-aachen.de/giesl/) took haskell course into my university and in my opinion his lectures are one of the best resource to understand Haskell, both theoretically and practically. In this course, you will learn (Compiler+Assembly+Language) together in a single course. So, for a CS background person, this course will be highly beneficiary since Compiler and Assembler both are known to him/her.

Although his course content is in German but video lectures are available in english: https://videoag.fsmpi.rwth-aachen.de/?course=12ss-funkprog

Missing function definition for 'shout'

Unless I'm missing something, I think you may have dropped the definition of the function shout :: [Char] -> [Char] from your tutorial (in the section "Combining functions and I/O actions") ...

Maybe you meant to have something like:

shout :: String -> String
shout line = toUpper <$> line

?

seems there is no "theme/style.org" when building FP by example

seems there is no "theme/style.org" when building FP by example

Github description: Python -> Scheme

The GitHub description states Python to be used but it is nowhere to be found. It is probably meant to be Scheme instead.

typos

Some typos:

Pure Functions / Referencail Transparency / No side effect
Clousure - Returning functions from functions
Data Imutability

Lazy Evaluation ( Dealayed evaluation) by default
Data Imutability/ Haskell has no variables
Composability, one fuction can be connected to another.

puryfing an impure Language
Python uses eager eavaluation by default.
...

Erik Meijer's "Functional Programming Fundamentals" series source

You should probably link to the original source in README.md. All 13 videos can be found here. I didn't create a pull request because I wasn't sure whether you would rather link to the series or each individual video.

Incorrect PDF reference link

When I tried to open the reference to the Hutton paper on higher order functions, instead a document from website in Brasil was served via the link in the page:

http://www.agu.gov.br/page/download/index/id/11184731

Clearly not what I was expecting ... although I accept that it may have been no less intelligible to me than your intended file! :)