jaspervdj - Visual Arrow Syntax
Finally, better Arrow syntax, completely free of hacks Published on March 12, 2020 under the tag haskell Not to be taken seriously. Haskell is great building at DSLs – which are perhaps the ultimate form of slacking off at work. Rather than actually doing the work your manager tells you to, you can build DSLs to delegate this back to your manager so you can focus on finally writing up that GHC pro
jaspervdj - Haskell Design Patterns: The Handle Pattern
A neat and simple way to build services in Haskell Published on March 8, 2018 under the tag haskell Introduction I’d like to talk about a design pattern in Haskell that I’ve been calling the Handle pattern. This is far from novel – I’ve mentioned this before and the idea is definitely not mine. As far as I know, in fact, it has been around since basically forever1. Since it is ridiculously close t
jaspervdj - Package takeover: indents
A Parsec package to deal with indentation Published on December 22, 2016 under the tag haskell Parsers are one of Haskell’s indisputable strengths. The most well-known library is probably Parsec. This parser combinator library has been around since at least 2001, but is still widely used today, and it has inspired new generations of general purpose parsing libraries. Parsec makes it really easy to
Hakyll - Home
Overview Static sites are fast, secure, easy to deploy, and manageable using version control. Hakyll is a Haskell library for generating static sites, mostly aimed at small-to-medium sites and personal blogs. It is written in a very configurable way and uses an xmonad-like DSL for configuration. Integration with pandoc gives us markdown and TeX support, including syntax highlighting and other good
jaspervdj - Image Processing with Comonads
A simple real-world example showing an image-processing Comonad Published on November 27, 2014 under the tag haskell Introduction A Comonad is a structure from category theory dual to Monad. Comonads are well-suited for image processing – Pretty much everyone on the internet Whenever Comonads come up, people usually mention the canonical example of evaluating cellular automata. Because many image
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