DEFUN 2008 - Real World Haskell

This document provides an introduction and overview to the Haskell programming language. It discusses Haskell's core concepts like pure functions, immutable data, static typing, and lazy evaluation. It also covers common Haskell tools and libraries, how to write simple Haskell programs, and how to compile and run Haskell code. The document uses examples and interactive sessions to demonstrate Haskell syntax and show how various language features work.