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Nice Dice in Haskell
Carrying on my theme of (board/card) game design, I recently wanted to play around with probabilities and dice. I wanted to find out the frequencies of the outcomes for various combinations of dice,...
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Sharp Cards in Haskell: Drawing Cards
Following on from my previous post on dice, in this post I’ll look at the support for cards that I am going to add to the next release of my game-probability library. So, cards: to work out the...
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Sharp Cards in Haskell: The Odds
Recap In a previous post I introduced a way to specify the action of drawing cards, culminating in the DrawM type: data DrawM card a = DrawFail | Done a | DrawOne (card -> DrawM card a) | DrawAny...
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Interleaving
I spent some time late last year working further on what I originally called behaviours. It grew much longer than a blog post, so it’s ended up in the Monad.Reader electronic magazine, in the...
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Programming Language Fiction
The latest issue of The Monad Reader (an electronic magazine vaguely themed around Haskell) was released this week — but rather than featuring technical articles, it’s a special “poetry and fiction”...
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Communicating Haskell Processes: The Long And The Short Of It
The Long It’s been a long time coming, but I have completed the final corrected version of my PhD thesis. It’s entitled, rather unimaginatively (and against received wisdom), “Communicating Haskell...
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Parallel Composition in Haskell
CHP, my Haskell concurrency library, allows you to run processes in parallel. One way of doing so is this binary operator: (<||>) :: CHP a -> CHP b -> CHP (a, b) Informally, the behaviour...
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Testing a Haskell Library
I’m currently gearing up for a CHP-3.0.0 release. Version 3 will be (internally) simpler in some places, faster in others, and has a slightly simplified API. The content of the library is mostly there...
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Testing a Side-Effecting Haskell Monad
In this post I’m going to continue discussing testing CHP, this time focusing on the CHP monad. The monad is a bit complex (and indeed, there is a subtle bug in the current version of CHP to do with...
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Pieces of Yesod: Inverting a Haskell Function
I’ve recently been working with web frameworks, and decided to have a play with what Haskell has to offer for web resources. One of the several frameworks available is Yesod. Web frameworks need some...
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