Sessions at FP Days 2013 about Haskell

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Thursday 24th October 2013

  • Running a Long-term (Haskell) Project - with code examples

    by Irek Jozwiak

    Haskell is without a doubt a cool programming language, but how well does it perform in a real-world, enterprise project? What kind of everyday experience awaits the working programmer?

    How does one adopt a non-mainstream tool that is alien to most developers? How does this new tool affect the project in terms of architecture, modeling business logic, testing, etc.?

    In this talk, Irek share stories about using Haskell to write a system responsible for data collection, analysis and billing. Attendees will find out about how interesting problems got solved, and get to see relevant code that illustrates the point.

    No prior Haskell or functional programming knowledge is required.

    At 11:45am to 12:30pm, Thursday 24th October

  • Practical refactoring in Haskell

    by Tom Ellis

    Refactoring is the practice of improving the design of existing code.

    A significant component of refactoring is the separation of concerns, that is making code more modular. Haskell provides an excellent environment to explore this concept since its type system makes it clear what side effects can occur during execution. This tutorial will explore techniques for improving the modularity of Haskell programs using the type system for evidence about which program transformations are worthwhile. Most of the lessons learned will carry over to other functional languages, and many of them to non-functional languages as well.

    Goals: By the end of this tutorial you will be able to use a variety of techniques to improve the design of existing Haskell code, make it more modular, and understand the dependencies between its constituent parts.

    Most of these lessons will transfer directly to other languages, especially functional languages.

    Intended audience: This workshop will be suitable for users of all programming languages, though a passing familiarity with, and enthusiasm for, Haskell will be beneficial.

    Infrastructure required: No special requirements. To follow the live coding execises participants should have a laptop with the Haskell Platform installed. An internet connection is not required but there will be a tarball containing course materials available to download before or during the talk for those who are interested.

    At 1:30pm to 2:15pm, Thursday 24th October

Friday 25th October 2013

  • Hands-on Haskell Introduction

    by Erik Hesselink and Sebastiaan Visser

    Haskell is an interesting programming language that is quite different from most other languages. It is purely functional, lazy, has algebraic data types and pattern matching, and a powerful type system. Learning Haskell can make you a better programmer, but it can also be daunting.

    We will teach you the basics of Haskell with a combination of presentation and exercises. No prior experience with Haskell is required. We will cover important language features like data types, pattern matching and IO, as well as tools, such as the GHC compiler, the interactive GHCi environment, and cabal.

    This is a hands-on session. Before coming, please make sure you have a laptop with the current Haskell platform (http://www.haskell.org/platform/) installed. This is version 2013.2.0.0, which includes GHC 7.6.3.

    There is a break part-way through the session for lunch.

    At 10:45am to 2:45pm, Friday 25th October