Intermediate functional programmers often find it daunting to move from examples provided in books and blogs to developing their first fully functioning application. The Queensland Functional Programming Lab at Data61/CSIRO have produced a course for exactly this purpose. Building on the fundamentals, we work through the process of constructing a REST application covering the following topics:

  • Package dependencies
  • Project configuration
  • Application testing & building
  • Encoding / decoding messages
  • Persistent storage integration
  • App state & configuration management
  • Error handling & reporting

 
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Outline/structure of the Session

Normally the course is run over three days covering the following lessons:

  • Level 01 : Simple hello world web app.
  • Level 02 : Define our application spec with types!
  • Level 03 : Testing & tools
  • Level 04 : Database layer
  • Level 05 : Better error handling through ExceptT
  • Level 06 : Add some flexible configuration
  • Level 07 : ReaderT & refactoring

Given the time constraints, we will select a subset of these exercises and provide the rest for students to complete at their leisure. The exact subset will depend on the student preferences and ability, but we intend to cover:

  • Level 02 : Define our application spec with types!
  • Level 05 : Better error handling through ExceptT
  • Level 06 : Add some flexible configuration
  • Level 07 : ReaderT & refactoring

There are plenty of interesting exercises and scope for deeper dives into interesting ideas.

Learning Outcome

By the end of the workshop:

  • You should be able to accurately describe the benefits of Functional Programming in practice.
  • You should gain the confidence to continue exploring your own self-directed learning of Functional Programming.
  • You should feel confident to seek out the necessary skills that are required to apply Functional Programming in your professional programming role.
  • You will be shown the location of online (volunteer) peer support networks, for individuals who choose to continue self-study and require assistance from others to do so.

Target Audience

This is targeted toward programmers who have become proficient with navigating functional programming concepts and would like to progress to building a complete application.

Prerequisite

You should be able to implement the canonical function of type:

  • Applicative f => [f a] -> f [a]

Participants will be required to bring a suitable development machine (e.g. portable laptop) for working through the exercises. You will also need to install the Glasgow Haskell Compiler (http://www.haskell.org/ghc/) version 7.10 or higher on that machine.

We recommend using either:

  • cabal version >= 2.0,
  • or a nix-shell

Stack 'yaml' configuration is provided and checked by our CI system for successful builds. However the authors do not use stack, so we cannot promise to be able to resolve stack related issues that may arise. Though we will do our best. :)

schedule Submitted 6 months ago

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  • Emily Pillmore
    By Emily Pillmore  ~  3 months ago
    reply Reply

    I, for one, really like the content of this course, but I agree that there is an oversaturation of tutorial courses in between Snoyman's and the Data61/QFPL content. I'm not sure what to do here, because on one hand, this is a very practical, and slightly more advanced course than much of the beginner content we're seeing, but on the other, there's not enough time!

  • Naresh Jain
    By Naresh Jain  ~  3 months ago
    reply Reply

    Hi Sean,

    Thanks for the proposal.

    We already have a full-day workshop on Haskel and a full-day bootcamp on Haskel. I think this would end up being an overdose.

    Please consider proposing an alternative topic.


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