Neil Mitchell's Blog (Haskell etc)

Summary: Testing shows the presence, not the absence of bugs. Recently, someone suggested to me that, thanks to test suites, things like cha...

I'll be talking at the Cambridge NonDysFunctional Programmers Meetup this coming Thursday (13 Aug 2015). Doors open at 7:00pm with talk...

Summary: I wrote a Conduit combinator which makes the upstream and downstream run in parallel. It makes Hoogle database generation faster. T...

Summary: I'm growing increasingly fond of the Conduit library. Here I give my intuitions and some hints I'd have found useful. Recen...

Summary: I wrote an extra library, which contains lots of my commonly used functions. When starting to write Bake , my first step was to co...

Summary: Writing a fast continuous integration server is tricky. When I started writing the continuous integration server Bake , I thought I...

Summary: I've released a new version of ghcid, which is faster and works better for Vim users. I've just released version 0.4 of ghc...

Summary: The development version of ghcid seemed to have some problems with terminating when Control-C was hit, so I investigated and learn...

Summary: The library js-jquery makes it easy to get at the jQuery Javascript code from Haskell. I've just released a new version. I'...

Summary: Sometimes source files get deleted, and build products become stale. Using Shake, you can automatically delete them. Imagine you ha...

My website is now located at ndmitchell.com and has a few new talks on it: Slides and Video from Gluing things together with Haskell give...

Summary: I found a nasty bug in GHC 7.10 RC3. It's been fixed. For Shake , I have an extensive test suite (2500+ lines of tests). I also...

Summary: Implementing a Functor instance is much easier than implementing a Monad instance, and can turn out to be quite useful. Haskell for...

Summary: Currently you have to call withSocketsDo before using the Haskell network library. In the next version you won't have to. The ...

Summary: Don't use nub . A much faster alternative is nubOrd from the extra package. The Haskell Data.List module contains the functi...

Summary: Hoogle 4 is out of date. The alpha version Hoogle 5 has fresh code and data every day (and isn't yet ready). Someone recently...

Summary: Haskell is great for refactoring, thanks to being able to reason about and transform programs with confidence. I think one of Haske...

Summary: I'm working on Hoogle 5. If you like unfinished software, you can try it . For the last month I've been working on the next...

Summary: When designing a user interface, think about the user, and what they want to know. Don't just present the information you know....

Summary: There is now a minimal Windows GHC installer that can install the network library. Michael Snoyman and I are seeking beta testers f...